50th week of 2008 patent applcation highlights part 25 |
Patent application number | Title | Published |
20080304248 | Display device - A display device useful to create an interactive image having different sizes by employing one display panel that is allowed to emit the light toward both directions. | 2008-12-11 |
20080304249 | Durable super-cooled intelligent light bulb - A self cooling light effects device for use in a standard light bulb socket having a socket adaptor, surface embedded LEDs as means to generate light effects, means to control light effects, and means for cooling. Fiber optic cables provide further light effects. Means to control light effects may include a logic board. Means for cooling may be any combination of fans, heat sinks, heat pipes, thermoelectric cooling, a heat conductive filler, and a heat conductive housing. | 2008-12-11 |
20080304250 | Thin Luminaire for General Lighting Applications - High power white light LEDs are distributed within a thin reflective cavity. The cavity depth may be less than 3 cm and, in one embodiment, is about 1 cm. A light output surface of the cavity is a flat reflector with many small openings. A small plastic lens is positioned over each opening for causing the light emitted from each opening to form a cone of light between approximately 50-75 degrees. Alternatively, each hole may be shaped to be a truncated cone to control the dispersion. The light emitted by the LEDs is mixed in the cavity by reflecting off all six reflective walls of the cavity. The light will ultimately escape through the many holes, forming a relatively uniform pattern of light on a surface to be illuminated by the luminaire. | 2008-12-11 |
20080304251 | DOOR HANDLE AND LOCK ILLUMINATING DEVICE - Apparatus, methods, and other embodiments associated with illuminating door handles and door lock mechanisms are described herein. In one embodiment of a door-illuminating device for illuminating a locking mechanism that is secured to a door and illuminating a door handle that is secured to the door, the device includes a housing, a light source, a source of power, a first opening in the housing, and a second opening in the housing. The housing is secured to the door and the light source and power source are secured within the housing, where the power source is in electrical communication with the light source. The first opening may selectively direct light emitted from the light source to the locking mechanism, and a second opening may selectively direct light emitted from the light source to the door handle. | 2008-12-11 |
20080304252 | SHOWCASE - An object is to provide a showcase provided with an illumination device capable of simplifying maintenance operability and effectively illuminating the inside of a display chamber, and the showcase in which the display chamber constituted in a main body is illuminated by the illumination device, the illumination device is constituted of an LED illumination member including LED elements, and a pair of holding members which are attached to a reflective plate on a canopy in the main body to hold the LED illumination member, whereby the irradiation angle of light from the LED illumination member is changeable. | 2008-12-11 |
20080304253 | LIGHTED HANDRAIL - A lighted handrail system is provided comprising in its basic form a handrail, a light source, and a power source. Preferably, the handrail has an opening adapted to receive the light source. | 2008-12-11 |
20080304254 | Self-powered flashlight/lantern - An illuminating device including a housing, at least one LED located within said housing, a grip handle, wherein the grip handle comprises a first shell and a second shell, wherein the first shell and the second shell join together, a rotatable shaft, coupled to the grip handle and to the housing, wherein the rotatable shaft comprises a spindle and a belt that rotates along the spindle to rotate the grip handle and the housing in a twisting motion against one another, an electric generating device received in a cavity of the grip handle, and an actuating device including a follower rotatably attached to the grip handle, including a handle pivotally attached to the follower for rotating the follower relative to the grip handle, and including a knob rotatably attached to the handle, to allow the handle to be rotated relative to the grip handle, wherein the actuating device and the electric generating device generate electric energy to energize the illuminating device. | 2008-12-11 |
20080304255 | Utility light with removable light arm - A utility light comprising a light arm having two ends, an LED mounted on one end and a conductive plug mounted on the other end; a main housing which is adapted to contain a battery power source, a conductive socket for removeably receiving the conductive plug, a power control circuit, and cause the power control circuit to receive power from the battery power source only when conductive plug is in the conductive socket, and a power switch for connecting the power source to the battery power control circuit, said power switch adapted to control said power control circuit to output each of two different power levels for providing the LED with two different levels of light output illumination, and wherein said conductive socket includes a sensing switch to detect the presence of the conductive plug in the conductive socket. | 2008-12-11 |
20080304256 | Torch Comprising a Battery Charging Device - The invention relates to a torch ( | 2008-12-11 |
20080304257 | Lamp - The invention relates to a lamp having a light source, a holder for accommodating a battery and means for providing a closed circuit, wherein the holder comprises a plastic body ( | 2008-12-11 |
20080304258 | PREPAREDNESS FLASHLIGHT - A battery powered electrical appliance ( | 2008-12-11 |
20080304259 | Direct-type backlight module and liquid crystal display using same - An exemplary direct-type backlight module includes light sources, a frame, and a fixing member. Each light source includes a supporting strip and at least one light-emitting member provided with the supporting strip. The frame includes a bottom plate. The bottom plate includes elastic members. The fixing member is engaged with the elastic members thereby fixing the supporting strips of the light sources to the bottom plate of the frame. A liquid crystal display using the backlight module is also provided. | 2008-12-11 |
20080304260 | LIGHTING DEVICE AND LIGHTING METHOD - A lighting device comprising one or more solid state light emitters which emit ultraviolet light, one or more other emitters which emit light in the range of 430 nm to 480 nm and one or more other emitters which emit light in the range of 555 nm to 585 nm, to make a mixture which in the absence of any other light would be within an area defined by coordinates (0.32, 0.40), (0.36, 0.48), (0.43, 0.45), (0.42, 0.42), and (0.36, 0.38). One or more of the other emitters is a lumiphor. One or more of the other emitters can be a solid state light emitter. The lighting device may further comprise one or more 600 nm to 630 nm light emitters, and the lighting device may emit light within ten MacAdam ellipses of the blackbody locus. Also, packaged solid state light emitters and methods of lighting. | 2008-12-11 |
20080304261 | LIGHTING DEVICE AND LIGHTING METHOD - A lighting device comprising one or more solid state light emitters which emit near ultraviolet light and one or more lumiphors which emit light having a wavelength in the range of from 490 nm to 555 nm, which in the absence of other light would produce a mixture of light within an area defined by x, y coordinates (0.32, 0.40), (0.36, 0.48), (0.43, 0.45), (0.42, 0.42), and (0.36, 0.38). The lighting device may further comprise one or more 600 nm to 630 nm light emitters, and a mixture of light emitted from the lighting device may be within ten MacAdam ellipses of the blackbody locus. Also, packaged solid state light emitters and methods of lighting. | 2008-12-11 |
20080304262 | LIGHT EMITTING DEVICE AND CAMERA-EQUIPPED CELLULAR PHONE INCORPORATING THE SAME - A light emitting device includes: a first and second LED chips for emitting light with a first and second wavelengths which are different from each other; and a translucent sealing resin for sealing the first and second LED chips; wherein the sealing resin contains a fluorescent material which is excited by light with the first wavelength but is not excited by light with the second wavelength, so that the light with the second wavelength and white light resulted from color mixture of the light with the first and second wavelengths and light emitted from the fluorescent material can be selectively emitted. The above light emitting device is adapted for a camera-equipped cellular phone. | 2008-12-11 |
20080304263 | Optical Device for Creating an Illumination Window - The invention relates to an optical device for creating an illumination window ( | 2008-12-11 |
20080304264 | Light source apparatus - A light source apparatus comprises reflection mirrors, first and second lamp holding sections, wherein the reflection mirrors are provided between the first and second lamp holding section, a reflection mirror support plate to which reflection mirrors are attached, a first lamp holding section support plate to which the first lamp holding section is attached, a second lamp holding section support plate to which the second lamp holding section is attached, a first fixing member which fixes the reflection mirror support plate and the first lamp holding section support plate to each other, a second fixing member which fixes the reflection mirror support plate and the second lamp holding section support plate to each other. | 2008-12-11 |
20080304265 | LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE DEVICE, AND IMAGE DISPLAY DEVICE - A light emitting device includes a plurality of light emitting diodes, a plurality of sealing resins, and a lens body formed in substantially a shape of a flat plate for guiding the light. The lens body is also disposed in a state of extending over the disposition surface of each sealing resin. The lens body includes a plurality of lens parts and a plurality of light guiding parts for reflecting the light by inside surfaces of the light guiding parts. The plurality of lens parts and the plurality of light guiding parts of the lens body are formed integrally with each other. The lens parts are disposed on the respective disposition surfaces of the sealing resins, and a plurality of light emitting function parts for sending out the light reflected by the inside surfaces of the light guiding parts are formed in the light guiding parts. | 2008-12-11 |
20080304266 | Light source apparatus - A light source apparatus comprises a reflection mirror; a first support member which supports a first mouthpiece of a xenon lamp; a second support member which supports a second mouthpiece of the xenon lamp; a support plate which supports the reflection mirror and the first and second mouthpieces; wherein the first lamp support member has a lamp support portion, and a support stand which is supported by the support plate and supports the lamp support portion, and wherein the lamp support portion has a position changing portion capable of changing the first support member between two positions in an optical direction. | 2008-12-11 |
20080304267 | STATIONARY LED LAMP - A stationary LED lamp includes a heat dissipating strip, a lamp cover base, a support strip, and an LED base. The heat-dissipating strip is adhered at an outer side of the lamp cover base, and the support strip is installed at an inner surface of the lamp cover base, which is provided with a reflecting strip on the inner surface. The LED base is provided with more than one LED welded on a PCB, and then adhered at an inner side of the support strip. Then the LED lamp is positioned by means of screwing or adhering, without easily loosening off as a conventional lamp does. The stationary LED lamp has a high luminance and swift heat dissipation to comply with the environment protection more effectively than the conventional one does. | 2008-12-11 |
20080304268 | Reflector - A reflector in the form of a body having a reflective surface. A recessed cavity is provided in the body having a viewing opening in the reflective surface. The cavity is filled with light emitting luminescent material which emits light visible through the viewing opening. | 2008-12-11 |
20080304269 | LIGHTING FIXTURE - A lighting fixture comprises a mounting assembly and two rails. At least one of the rails is slidable relative to the mounting assembly. The rails are each extruded, and have profiles which are substantially similar to each other. Each rail has a male component which fits within a female component of the other. Also, a fixture comprising a mounting assembly comprising an opening through which a light engine housing can be inserted, and (1) a spring clip and/or (2) a clip engagement structure. Also, a fixture comprising a mounting assembly, a first set of rails, and a supplemental rail. The supplemental rail is slidable relative to the light emitting element mounting assembly. Also, a fixture comprising a mounting assembly, a set of rails, and an engagement element having a first portion being in contact with a first rail and a second portion in contact with the second rail. | 2008-12-11 |
20080304270 | LIGHT EMITTING DIODE HEAT DISSIPATION MODULE - A light emitting diode (LED) heat dissipation module is suitable to dissipate heat for at least a LED. The LED heat dissipation module includes a heat dissipation base, at least a heat conductor, and a plurality of heat dissipation fins. The heat dissipation base has a first surface and a second surface corresponding to the first surface. The LED is provided on the first surface and the heat conductor is provided on the second surface. In addition, the heat dissipation fins are provided at the heat conductor, and the heat dissipation fins are separated from the heat dissipation base. | 2008-12-11 |
20080304271 | Positioning structure for luminous device - This invention is a positining structure for luminous devices, comprising mainly of IC board, lamp and fabric. The lamp is fitted to the IC board and connected to a power supply wire, with the soft fabric either sewn or pasted on to the back of the IC board. When joining to plush toys or fabric, all that is needed is to sew the fabric on the luminous device to the surface of the fabric of the plush toy and the lamp will not move position. | 2008-12-11 |
20080304272 | LIGHT BULB SYSTEM - A light bulb system is provided. This system includes a lighting element that is adapted to draw electrical power from a standard light bulb socket as a primary power source; and an energy capturing and storing device in electrical communication with the lighting element for providing sufficient electrical power to the lighting element as a secondary power source. The energy capturing and storing device further includes means for capturing and converting non-electrical energy into electrical energy, which may be stored for use in powering the lighting element when the primary source of electrical power is either unavailable or when its use is undesirable. | 2008-12-11 |
20080304273 | Device For Improved Illumination Efficiency - Interior lighting and illumination systems for aircraft, particularly commercial passenger airplanes. Efficient beam forming optical light emitting diode arrangements having offset apertures for maximizing effectiveness are positioned in the ceiling panels above the aisles between sets of seats in the passenger cabins for cross bin illumination of stowage areas. The efficient beam forming optical LED devices are positioned to shine on opposite storage/stowage bins and are positioned to overcome line of height light source restrictions such as may be imposed by a valence. The devices are effective for illuminating across the aisles, thus creating a cross-bin lighting system. | 2008-12-11 |
20080304274 | AMBIENT LIGHTING MODULE - An ambient light control module and method of operating an ambient light control module selectively actuates light modules to provide a desired light color and intensity. The disclosed ambient light control module selectively actuates light modules that are controllable to provide desired colors. The light control module produces uniform signals across the several light modules such that each separate light module will emit the same color. The disclosed example light control module includes a microcontroller with a plurality of output channels including output compare channels and pulse width modulated channels. The output channels are matched to a common clock so that a uniform signal is emitted from any channel to provide the desired uniformity between lighting modules. | 2008-12-11 |
20080304275 | Lamp With Light Absorbing Coating - The invention relates to a tubular lamp comprising a lamp vessel ( | 2008-12-11 |
20080304276 | LIGHT BAR FOR MOUNTING TO A VEHICLE - A kit for a front and/or rear light bar, for providing auxiliary illumination for a vehicle in the forward and/or rearward direction. The light bar typically includes several high intensity flood lights and two infrared illuminator modules, i.e. infrared lights. A switch box is provided for placing in the cabin of the vehicle for turning on and off the lights. A light bar, typically a front light bar, can be provided with strobe lights in place of some of the flood lights. A shield is provided as part of a front light bar to protect the lights when not in use, and to keep the lights from striking the front of the vehicle. | 2008-12-11 |
20080304277 | INCREASED EFFICIENCY LED PROJECTOR OPTIC ASSEMBLY - A projector optic assembly for generating and projecting a high gradient beam. The assembly includes a light pipe defining an optical axis and having a collection unit, a funneling unit, and an emitting surface. The collection unit extends from a first end to a transition plane defining the transition from the collection unit to the funneling unit. The collection unit is configured to collect light from a source and direct it through the transition plane, whereafter the funneling unit extends from the transition plane to the emitting surface. The emitting surface has an area smaller than an area of the transition plane selected to increase the efficiency of the funneling unit. Spaced apart from and generally opposite of the emitting surface is a condenser lens | 2008-12-11 |
20080304278 | VEHICULAR HEADLAMP - A vehicular headlamp includes a first reflector disposed fixed with respect to the light source; a second reflector rotatable in a direction that opens and closes a reflective surface of the first reflector; a bracket rotatably supporting the second reflector via a shaft that extends in a direction generally perpendicular to the optical axis of the light source; an actuator attached to the bracket; an attachment includes an insertion hole into which the driving rod of the actuator is inserted and first and second connection holes into which the connecting shaft of the second reflector is inserted. The second reflector includes a connecting shaft that projects in a direction generally perpendicular to an optical axis of the light source. The actuator includes a body and a driving rod that projects from a portion other than a center portion of the body and moves in an axial direction. The first connection hole and the second connection hole of the attachment open one way and open in opposite directions. The actuator is capable of being respectively attached to the bracket of the lamp unit on the left and right sides in orientations that differ by a rotation of 180 degrees in a shaft rotating direction of the driving rod, with the connecting shaft of the second reflector on the left inserted into the first connection hole, and the connecting shaft of the second reflector on the right side inserted into the second connection hole. | 2008-12-11 |
20080304279 | DISCHARGE LAMP LIGHTING UNIT - A discharge lamp lighting unit and vehicle headlamp are provided. The discharge lamp lighting unit includes a case body comprising a fitting portion and a projection portion, the fitting portion and the projection portion arranged in an L-shaped configuration, the discharge lamp being connected to the discharge lamp lighting unit at the fitting portion of the case body, and the projection portion projecting in the emergent light direction alongside of the discharge lamp; and a plurality of lighting circuit components, at least one of which is arranged in the projection portion. The vehicle headlamp includes a lamp unit which includes a discharge lamp which emits light, a reflector which reflects the light from the discharge lamp in an emergent light direction, and a holding projection which is provided at an end of the reflector at which the discharge lamp is mounted; and the discharge lamp lighting unit. | 2008-12-11 |
20080304280 | FLICKERLESS LIGHT SOURCE - A flickerless light source comprising at least two lightpipes with patterned surfaces, a single sided LED light source attached to one end of each lightpipes, and a coupler for holding the lighpipes together. The coupler comprises a hollow sleeve, a coupler with a reflective face, or a coupler with a dual sided LED light source is disclosed. The patterned surface of the lightpipes diffuse or reflect light emitted by the single and dual LED light sources and through the lightpipes to provide a light with uniform brightness and intensity. The coupler with reflective face reflects light back into the lighpipes. The coupler with the dual sided LED light source in addition to the single sided light sources emits light into the lightpipes. | 2008-12-11 |
20080304281 | Operating Lumina - An operating lumina comprising at least one light source arranged in a lumina body and an optical means for directing the visible radiation from the light source in a main radiating direction onto an operating zone has an additional luminous means that can be switched independently of the light source. | 2008-12-11 |
20080304282 | BACKLIGHT CONTAINING FORMED BIREFRINGENCE REFLECTIVE POLARIZER - A backlight unit comprises:
| 2008-12-11 |
20080304283 | TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS - The transreflectors may comprise a transparent substrate having reflective surfaces and other light transmissive surfaces for respectively reflecting and transmitting a greater portion of the light striking opposite sides of the substrate. Alternatively, the transreflectors may comprise two or more transparent substrates of different indices of refraction bonded together, with a pattern of optical deformities in the mating side of one of the substrates and an inverse pattern of optical deformities in the mating side of an other substrate in mating engagement with each other. The transreflectors are used in a transreflector system or display to transmit more of the light emitted by a backlight or other light source incident on one side of the transreflectors and reflect more of the light incident on the opposite side of the transreflectors. The transreflectors and backlight may be tuned to each other to enable the transreflectors to better transmit more of the light emitted by the backlight. | 2008-12-11 |
20080304284 | LIGHTING DEVICE - A lighting device may include light sources at one or two distal ends; wherein LEDs may be used as a light source. The lighting device may comprise a housing, at least one light-entering plane, at least one light-emitting plane and at least one guiding surface attached to the housing. A plurality of guiding blocks are configured and disposed on the guiding surface, and at least one distal end of the guiding surface is adjacent to the light source such that as light travels into and within the housing, light may be reflected and/or deflected by the guiding blocks and exits the housing via the light emitting plane. The illumination area opposite the light emitting plane may therefore receive substantially uniform lighting from the lighting device. The device may further comprise a reflector covering a portion of the guiding surface and a diffuser covering a portion of the light emitting plane. | 2008-12-11 |
20080304285 | PLANAR LIGHTING DEVICE - A thinner and larger planar lighting device is achieved without increasing the number of light sources and holding the power consumption to a minimum. The LED chips on the light sources are arrayed at an array density varying according to the position of each of the light entrance planes of the light guide plate such that the illuminance distribution as measured on along the middle of the light guide plate in a direction parallel to longitudinal direction of the light entrance planes represents a high-in-the-middle, bell-curve distribution. | 2008-12-11 |
20080304286 | PLANAR LIGHTING DEVICE - The absolute value of the light amount is increased by providing main light sources and auxiliary light sources on four sides of a light guide plate having a flat and rectangular light exit plane whereas the amounts of light emitted by LED chips of the main light sources and the auxiliary light sources are adjusted such that illuminance is highest near the central area of the light guide plate to obtain a high-in-the-middle, bell-curve illuminance distribution for light emitted by the light guide plate. A planar lighting device achieving a reduced thickness and weight and capable of emitting an increased amount of illumination light is provided. | 2008-12-11 |
20080304287 | Microstructure transfer medium and application thereof - The present invention discloses a microstructure transfer medium and application thereof to produce various microstructures on a film, glass substrate, plastic substrate, etc. for utilization in a variety of optical films of a backlight module, light guide plates, color enhancement film for liquid crystal displays, various patterned nanoimprint for semiconductor or flat panel display processes, and Fresnel lens. Furthermore, the microstructure transfer medium according to the present invention can be applied in producing microstructures on a non-planar surface. The microstructure transfer medium according to the present invention comprises a substrate and a release layer formed on the substrate wherein the release layer has microstructures thereon. Preferably, the surface energy of the release layer is lower than 30 dyne/cm. | 2008-12-11 |
20080304288 | PLANAR LIGHTING DEVICE - The planar lighting device includes a pair of light sources, a light guide plate and a housing. The light guide plate is disposed between the light sources and includes a light exit plane and a pair of opposite light entrance planes respectively provided opposite to the light sources. The planar lighting device thus configured features a heat dissipation structure whereby a heat sink is connected to each of the light sources and heat pipes are attached to the heat sink so as to extend toward the center of the housing. Disclosed is a thin and lightweight planar lighting device suitably used for a large display television or the like, capable of emitting illumination light free from brightness unevenness or with a reduced level of brightness unevenness, allowing increase of dimensions of the display area, and capable of optimally releasing heat generated by the light sources. | 2008-12-11 |
20080304289 | LED night light with more than 1 optics means - The LED night light with more than one optics means incorporate with 1 | 2008-12-11 |
20080304290 | MINIATURE HIGH-VOLTAGE POWER SUPPLIES - The present invention provides miniature power supplies and circuitry for powering high-voltage devices. | 2008-12-11 |
20080304291 | Switched Mode Power Converter and Method of Operation Thereof - A switched mode power converter is provided which includes a transformer ( | 2008-12-11 |
20080304292 | ISOLATED HIGH POWER BI-DIRECTIONAL DC-DC CONVERTER - A bi-directional dc-dc converter is provided that may provide voltage conversion for two separate electrical power systems. The two electrical power systems may have different functions, electrical requirements and power transfer directions. The bi-directional dc-dc converter may include back-to-back bi-directional dc-dc converter circuits isolated from each other by a transformer. Multiple such dc-dc converters may be connected in parallel to increase power capability. Phase shift pulse width modulation (PWM) may be used to switch the parallel dc-dc converters so as to decrease both voltage ripple and current ripple. The number of dc-dc converters may be modified to meet the different needs of various electric power systems. A single bi-directional dc-dc converter of the invention may be employed to provide electric power conversion for multiple electric power systems, even where those systems have different power requirements and different power transfer directions. | 2008-12-11 |
20080304293 | Converter controller - A converter controller is disclosed. In one embodiment, a controller for a flyback converter includes a converter and a flyback controller. The converter is coupled to the flyback converter for receiving an auxiliary voltage and for generating a constant power voltage. The flyback controller is powered by the constant power voltage for controlling an output voltage of the flyback converter. Furthermore, the flyback converter comprises a transformer with a primary side and a secondary side. The output voltage and the auxiliary voltage are produced at the transformer. | 2008-12-11 |
20080304294 | Power Supply for Relieving Spikes - In a feedback circuit of a power supply, an electrical level of an output voltage is stabilized corresponding to changes of an electrical level of a pulse width modulation signal, and effects, which are caused by spikes, on passive elements are decreased to a lowest degree. The electrical level of the output voltage is stabilized by storing a voltage corresponding to a low-to-high electrical level of the PWM signal with a capacitor, by discharging the stored voltage with a high-to-low electrical level of said PWM signal, and by regulating a discharging path of the stored voltage with a diode, which is not conducted. The abovementioned disposition may be utilized on various power-consuming devices, a duty cycle of each of which is controlled with a PWM signal, for stabilizing output voltages of said power-consuming devices, and for reducing effects, which are caused by spikes, on passive elements inside said power-consuming devices. | 2008-12-11 |
20080304295 | Switching Power Converter with a Secondary-Side Control - This invention discloses a power converter with a secondary-side control, including an input circuit with one or more switches, an output circuit with an output end and a controller, and a transformer with a primary-side coil assembly connecting the switch(es) and a secondary-side coil assembly connecting the output circuit. The on/off state of the switch(es) is controlled by variations in voltage of primary-side coil assembly. The controller in the output circuit detects an output voltage and sends detected results to the primary-side coil assembly as a feedback for primary-side coil assembly to regulate the PWM or PFM action of the switch in a specific way to maintain voltage stability. | 2008-12-11 |
20080304296 | DC-DC and DC-AC power conversion system - A galvanic isolated DC-DC and DC-AC power conversion system is coupled to a plurality of DC sources which are derived from a combination of a plurality of single-phase and three-phase AC-DC converters. The DC-DC and DC-AC power conversion system in one embodiment is configured to provide mixed type outputs (mixed frequency, e.g. DC with 50 or 60 Hz, with 400 Hz; mixed voltage levels). | 2008-12-11 |
20080304297 | SWITCHING POWER SUPPLY WITH PROTECTION FUNCTION - A switching power supply with protection function includes a transistor controlled to be on or off by a PWM signal from a PWM controller to convert a DC voltage into a square wave signal, a filter filtering the square wave signal into an output voltage signal, the output voltage signal being fed back to the PWM controller to be compared with a predetermined voltage, and a switch device having an input terminal for receiving the output voltage signal from the filter, an output terminal for connecting to a load, and a control terminal. If the voltage of the output voltage signal from the filter is not equal to the predetermined output voltage, the PWM controller will not output a signal to the control terminal of the switch device and the switch device will be in an off state. The PWM controller adjusts the duty ratio of the PWM signal until the voltage of the output voltage signal from the filter is equal to the predetermined output voltage such that the PWM controller outputs a control signal to turn on the switch device to allow the load receiving the output voltage signal via the switch device. | 2008-12-11 |
20080304298 | System Interconnection Inverter - A system interconnection inverter includes a step-up converter and an inverter. Moreover, the system interconnection inverter includes a short-circuit current-interrupting diode with a cathode connected to an input terminal of a negative bus, a semiconductor switch connected to an anode of the short-circuit current-interrupting diode, a semiconductor switch drive circuit that drives the semiconductor switch, a semiconductor switch-off circuit that turns off the semiconductor switch drive circuit when negative power is applied such that electric current flows from a cathode toward an anode of the input terminal, and a control circuit that controls the semiconductor switch drive circuit. | 2008-12-11 |
20080304299 | Low voltage LED drive from 120VAC line - A highly efficient DC power supply is converted directly off-line from an A.C. or DC voltage source to have output current or voltage regulation from a low level approaching zero, up to the level of maximum capacity and has a DC power supply voltage and a DC voltage source for operating integrated circuits that is independent of output voltage or current. The DC power supply voltage is connected to a transformer input and switched “Off” and “On” in a pulse width modulated mode at a frequency rate above 1000 Hz and has the transformer output filtered through “buck” stage, so as to permit pulse width control to as much as 90% “on-time”, without damage to circuit components or load. | 2008-12-11 |
20080304300 | Power conversion system with galvanically isolated high frequency link - A power conversion system has a three-phase AC input, where each AC input phase is linked to a string of cascaded single-phase AC-DC converters placed in series with a three-phase AC-DC converter. Each single-phase AC-DC converter in one embodiment includes a silicon carbide (SiC) pulse width modulated MOSFET H-bridge that placed in series with the three-phase AC-DC converter that includes a silicon (Si) SCR bridge. The single-phase AC-DC converters and the three-phase AC-DC converter together in one embodiment include a mixed silicon-carbide (SiC) and silicon (Si) device topology. | 2008-12-11 |
20080304301 | Power Converting Apparatus For System Connection - A grounding wire from a commercial power system is connected to a series-connection end of a series connection between two capacitors connected in series between a positive electrode and a negative electrode. A current detector monitors an output current of an inverter unit in which four switching elements and two diodes convert voltages at both ends of the series circuit of the capacitors at three levels. An operation control circuit controls a generation of a PWM signal to be applied to the four switching elements, to minimize a difference between a current value detected by the current detector and a target current value. | 2008-12-11 |
20080304302 | Systems and Methods for Controlling a Converter for Powering a Load - Systems and methods for controlling a converter for powering a load are provided. According to one embodiment of the invention, a method for powering a load is provided. A power converter may be provided. At least one gating control signal having a switching pattern may be supplied to the power converter, wherein the switching pattern has a waveform with an effective switching frequency greater than 1 times the fundamental frequency of the switching pattern and less than 2 times the fundamental frequency of the switching pattern. At least one output power signal may be output to the load responsive at least in part to the at least one gating control signal supplied. | 2008-12-11 |
20080304303 | POWER CONVERTING DEVICE - A power converting device includes a power converting unit for converting an AC voltage input into a DC voltage output, a cooling fan for dissipating heat generated by the power converting unit, a detecting unit connected electrically to the power converting unit for detecting a current output of the power converting unit and for generating a control signal corresponding to the current output detected thereby, and a controller connected electrically to the cooling fan and the detecting unit for controlling rotational speed of the cooling fan in accordance with the control signal from the detecting unit. | 2008-12-11 |
20080304304 | Composite Connection Port Device - A composite port connection device, and is provided with a plurality sets of connection ports for the user to connect them to various types of electronic devices. The connection ports include power output port and data transmission port. The major function of the invention is that, upon receiving the local power supply and data signals at input terminal, the power supply and the data signals are processed separately and independently, then they are connected to the related output ports respectively. Thus, the device enables a user to connect each of the respective output ports to each of the various electronic devices, hereby achieving the objective of providing power supply and realizing data transmission. | 2008-12-11 |
20080304305 | BOOST CONVERTER WITH INTEGRATED HIGH POWER DISCRETE FET AND LOW VOLTAGE CONTROLLER - A boost converter for high power and high output voltage applications includes a low voltage controller integrated circuit and a high voltage, vertical, discrete field effect transistor, both of which are packed in a single package. | 2008-12-11 |
20080304306 | HIGH VOLTAGE AND HIGH POWER BOOST CONVETER WITH CO-PACKAGED SCHOTTKY DIODE - A high voltage and high power boost converter is disclosed. The boost converter includes a boost converter IC and a discrete Schottky diode, both of which are co-packaged on a standard single common die pad. | 2008-12-11 |
20080304307 | USE OF A SYMMETRIC RESISTIVE MEMORY MATERIAL AS A DIODE TO DRIVE SYMMETRIC OR ASYMMETRIC RESISTIVE MEMORY - A symmetrically resistive memory material (such as a phase change material) is described for use as a rectifying element for driving symmetric or asymmetric resistive memory elements in a crosspoint memory architecture. The crosspoint architecture has a plurality of electrodes and a plurality of crossbar elements, with each crossbar element being disposed between a first and a second electrode. The crossbar element is made of a symmetric resistive memory element used as a rectifier in series with a symmetric or asymmetric resistive memory element. | 2008-12-11 |
20080304308 | UNIPOLAR RESISTANCE RANDOM ACCESS MEMORY (RRAM) DEVICE AND VERTICALLY STACKED ARCHITECTURE - One embodiment of the present invention includes a low-cost unipolar rewritable variable-resistance memory device, made of cross-point arrays of memory cells, vertically stacked on top of one another and compatible with a polycrystalline silicon diode. | 2008-12-11 |
20080304309 | SEMICONDUCTOR MEMORY DEVICE - The sense amp circuit includes a first node given a first, positive constant voltage larger than a fixed potential before reading, a second node given a second, negative constant voltage smaller than the fixed potential before reading, and a third node to be connected to the first and second nodes on reading. A first transistor is connected between the first node and the bit line and operative to turn on when the potential on the bit line becomes smaller than the fixed potential. A second transistor is connected between the second node and the bit line and operative to turn on when the potential on the bit line becomes larger than the fixed potential. A first capacitor is connected between the first node and the fixed potential. A second capacitor is connected between the second node and the fixed potential. | 2008-12-11 |
20080304310 | MEMORY HAVING SHARED STORAGE MATERIAL - An integrated circuit includes a bit line, a plurality of access devices coupled to the bit line, and a plate of phase change material. The integrated circuit includes a plurality of phase change elements contacting the plate of phase change material and a plurality of first contacts. Each first contact is coupled between an access device and a phase change element. | 2008-12-11 |
20080304311 | INTEGRATED CIRCUIT INCLUDING LOGIC PORTION AND MEMORY PORTION - An integrated circuit includes a logic portion including M conductive layers, a memory portion including N conductive layers, and at least one common top conductive layer over the logic portion and the memory portion. M is greater than N. | 2008-12-11 |
20080304312 | RESISTANCE MEMORY WITH TUNGSTEN COMPOUND AND MANUFACTURING - Memory devices based on tungsten-oxide memory regions are described, along with methods for manufacturing and methods for programming such devices. The tungsten-oxide memory region can be formed by oxidation of tungsten material using a non-critical mask, or even no mask at all in some embodiments. A memory device described herein includes a bottom electrode and a memory element on the bottom electrode. The memory element comprises at least one tungsten-oxygen compound and is programmable to at least two resistance states. A top electrode comprising a barrier material is on the memory element, the barrier material preventing movement of metal-ions from the top electrode into the memory element. | 2008-12-11 |
20080304313 | SEMICONDUCTOR MEMORY DEVICE - A semiconductor memory device comprises a cell array having a plurality of SRAM cells arranged in a bit line direction and a word line direction orthogonal to said bit line direction in a matrix; and a peripheral circuit arranged adjacent to the cell array in the bit line direction. The cell array includes first P-well regions and first N-well regions shaped in stripes extending in the bit line direction and arranged alternately in the word line direction. The SRAM cell is formed point-symmetrically in the first P-well region and the first N-well regions located on both sides thereof. The peripheral circuit includes second P-well regions and second N-well regions extending in the bit line direction and arranged alternately in the word line direction. | 2008-12-11 |
20080304314 | Semiconductor Device and Method Comprising a High Voltage Reset Driver and an Isolated Memory Array - A method of operating a semiconductor device, a semiconductor device and a digital micromirror system are presented. In an embodiment, the semiconductor device comprises a grounded substrate, a memory array, and a reset driver. The memory array may be isolated from the grounded substrate with a buried layer. The set of voltages of the memory array may be shifted with respect to a reset voltage. The reset driver may drive the reset voltage and the reset driver may have at least one extended drain transistor in the grounded substrate. | 2008-12-11 |
20080304315 | Semiconductor memory device, method of writing data therein, and method of reading data therefrom - A semiconductor memory device ( | 2008-12-11 |
20080304316 | SENSING WITH BIT-LINE LOCKOUT CONTROL IN NON-VOLATILE MEMORY - In sensing a group of cells in a multi-state nonvolatile memory, multiple sensing cycles relative to different demarcation threshold levels are needed to resolve all possible multiple memory states. Each sensing cycle has a sensing pass. It may also include a pre-sensing pass or sub-cycle to identify the cells whose threshold voltages are below the demarcation threshold level currently being sensed relative to. These are higher current cells which can be turned off to achieve power-saving and reduced source bias errors. The cells are turned off by having their associated bit lines locked out to ground. A repeat sensing pass will then produced more accurate results. Circuitry and methods are provided to selectively enable or disable bit-line lockouts and pre-sensing in order to improving performance while ensuring the sensing operation does not consume more than a maximum current level. | 2008-12-11 |
20080304317 | SOLID STATE MEMORY UTILIZING ANALOG COMMUNICATION OF DATA VALUES - Memory devices adapted to process and generate analog data signals representative of data values of two or more bits of information facilitate increases in data transfer rates relative to devices processing and generating only binary data signals indicative of individual bits. Programming of such memory devices includes programming to a target threshold voltage range representative of the desired bit pattern. Reading such memory devices includes generating an analog data signal indicative of a threshold voltage of a target memory cell. This analog signal may then be processed to convert it to a digital representation of the individual bits of the bit pattern represented by the analog signal. Such memory devices may be incorporated into bulk storage devices, and may utilize form factors and communication protocols of hard disk drives (HDDs) and other traditional bulk storage devices for transparent replacement of such traditional bulk storage devices in electronic systems. | 2008-12-11 |
20080304318 | MULTI-LEVEL-CELL TRAPPING DRAM - A memory device having at least one multi-level memory cell is disclosed, and each multi-level memory cell configured to store n multiple bits, where n is an integer, wherein the multiple bits are stored in a charge storage layer trapping charge carriers injected by application of a voltage to set or reset a threshold voltage V | 2008-12-11 |
20080304319 | Semiconductor Memory Device for Storing Multivalued Data - Data storage circuits are connected to the bit lines in a one-to-one correspondence. A write circuit writes the data on a first page into a plurality of first memory cells selected simultaneously by a word line. Thereafter, the write circuit writes the data on a second page into the plurality of first memory cell. Then, the write circuit writes the data on the first and second pages into second memory cells adjoining the first memory cells in the bit line direction. | 2008-12-11 |
20080304320 | MEMORY CELL AND METHOD OF PROGRAMMING THE SAME - A method of programming a memory cell is described. The memory cell includes a gate with a charge trapping layer isolated from a substrate for storing data with a first region and a second region separated from the first region. The method of programming the memory cell includes applying a first voltage arrangement with a first gate voltage for programming the first region and applying a second voltage arrangement with a second gate voltage for programming the second region. The first gate voltage is greater than the second gate voltage. | 2008-12-11 |
20080304321 | Serial Flash Memory Device and Precharging Method Thereof - Provided herein is a serial flash memory device and precharging method thereof in which a single local bit-line data is sensed in synchronization with a clock. The method includes precharging two or more local bit-lines in synchronization with a first clock; and disprecharging one of the two local bit-lines in synchronization with a second clock and sensing and amplifying data of the other local bit-line. Accordingly, two precharged local bit-lines are not adjacent to each other, thereby eliminating a coupling noise effect. In addition, the time for performing the precharging operation and the sensing operation is easily secured, compared to the prior precharging method in which corresponding local bit-lines are precharged at every clock. | 2008-12-11 |
20080304322 | NAND FLASH MEMORY CELL PROGRAMMING - A flash memory device, such as a NAND flash, is described having an array of floating gate transistor memory cells arranged in a first and second addressable blocks. A voltage source to supply programming voltages to control gates of the floating gate transistor memory cells is provided. The voltage source supplies a pre-charge voltage to the control gates of the floating gate transistor memory cells located in the first addressable block when data is programmed in memory cells of the second addressable block. Methods for pre-charging word lines in unselected array blocks are described. | 2008-12-11 |
20080304323 | Method and apparatus for programming data of memory cells considering floating poly coupling - A method and an apparatus for programming data of memory cells considering coupling are provided. The method includes: calculating a change of a threshold voltage based on source data of the memory cells; converting source data which will be programmed based on the calculated change of the threshold voltage; and programming the converted source data. | 2008-12-11 |
20080304324 | NONVOLATILE SEMICONDUCTOR MEMORY DEVICE WHICH REALIZES "1" WRITE OPERATION BY BOOSTING CHANNEL POTENTIAL - A nonvolatile semiconductor memory device includes a memory cell array having a plurality of cell units each including a preset number of memory cells and select gate transistors on drain and source sides. The nonvolatile semiconductor memory device includes a voltage control circuit to prevent occurrence of an erroneous write operation due to excessively high boost voltage of a channel when “1” is written into the memory cell. | 2008-12-11 |
20080304325 | NON-VOLATILE MEMORY WITH IMPROVED SENSING HAVING BIT-LINE LOCKOUT CONTROL - In sensing a group of cells in a multi-state nonvolatile memory, multiple sensing cycles relative to different demarcation threshold levels are needed to resolve all possible multiple memory states. Each sensing cycle has a sensing pass. It may also include a pre-sensing pass or sub-cycle to identify the cells whose threshold voltages are below the demarcation threshold level currently being sensed relative to. These are higher current cells which can be turned off to achieve power-saving and reduced source bias errors. The cells are turned off by having their associated bit lines locked out to ground. A repeat sensing pass will then produced more accurate results. Circuitry and methods are provided to selectively enable or disable bit-line lockouts and pre-sensing in order to improving performance while ensuring the sensing operation does not consume more than a maximum current level. | 2008-12-11 |
20080304326 | METHOD OF ERASING IN NON-VOLATILE MEMORY DEVICE - An erasing method of post-programming in a nonvolatile memory device. The method includes post-programming dummy memory cells; verifying whether threshold voltages of the dummy memory cells are greater than or equal to a first voltage; post-programming normal memory cells; and verifying whether threshold voltages of the normal memory cells are greater than or equal to a second voltage. The first voltage is different from the second voltage. | 2008-12-11 |
20080304327 | Methods and apparatuses for refreshing non-volatile memory - Methods and apparatuses for refreshing non-volatile memories due to changes in memory cell charges, such as charge loss, are disclosed. Embodiments generally comprise a voltage generator to create a sub-threshold voltage for a memory state of memory cells in a block. Once the sub-threshold voltage is applied to a word line a state reader determines states of memory cells coupled to the word line. If the state reader determines that one or more of the memory cells coupled to the word line is in the memory state, despite the sub-threshold voltage, a memory refresher may program a number of memory cells in the block. Method embodiments generally comprise applying a sub-threshold voltage to a word line for a plurality of memory cells, detecting at least one memory cell of the plurality violates a state parameter, and refreshing a block of memory cells associated with the plurality of cells. | 2008-12-11 |
20080304328 | Nonvolatile memory devices and methods of operating the same - Example embodiments include nonvolatile memory devices that have good operation performance and may be made in a highly integrated structure, and methods of operating the same. Example embodiments of the nonvolatile memory devices include a substrate electrode, and a semiconductor channel layer on the substrate electrode, a floating gate electrode on the substrate electrode, wherein a portion of the floating gate electrode faces the semiconductor channel layer, a control gate electrode on the floating gate electrode, and wherein a distance between a portion of the floating gate electrode and the substrate electrode is smaller than a distance between the semiconductor channel layer and the substrate electrode wherein charge tunneling occurs. | 2008-12-11 |
20080304329 | Method for erasing and changing data of floating gate flash memory - A method for erasing data stored in the memory cells of the floating gate flash memory is disclosed. The method allows a plurality of sectors to be disposed in a same P well. The method includes erasing data stored in a first set of memory cells according to a control signal, randomly reading the data stored in a second set of memory cells affected by the erasing action of the first set of memory cells, and writing data read from the second set of memory cells onto the second set of memory cells. | 2008-12-11 |
20080304330 | SYSTEMS, METHODS, AND APPARATUSES FOR TRANSMITTING DATA MASK BITS TO A MEMORY DEVICE - Embodiments of the invention are generally directed to systems, methods, and apparatuses for transferring data mask bits to a memory device. In some embodiments, an integrated circuit includes logic to issue a partial write command to a memory device. In addition, the integrated circuit may include logic to transfer a write frame to the volatile memory device over an N bit wide data bus, wherein the write frame includes one or more data mask bits to be transferred over the N bit wide data bus. | 2008-12-11 |
20080304331 | Semiconductor integrated circuit with full-speed data transition scheme for DDR SDRAM at internally doubled clock testing application - The present invention provides a circuit and a method for the full speed testing of semiconductor memory chips. The invention provides a full-speed data transition scheme for double data rate (DDR) synchronous dynamic random access memory (SDRAM). For high speed or double speed stress testing of DDR SDRAM, the internal clock is double the speed of the external clock. During high speed test, this causes the data to be written or presented to the data path two times. This invention provides a circuit and method for creating a full-speed data transition scheme to overcome this double speed testing problem. | 2008-12-11 |
20080304332 | Semiconductor integrated circuit with full-speed data transition scheme for DDR SDRAM at internally doubled clock testing application - The present invention provides a circuit and a method for the full speed testing of semiconductor memory chips. The invention provides a full-speed data transition scheme for double data rate (DDR) synchronous dynamic random access memory (SDRAM). For high speed or double speed stress testing of DDR SDRAM, the internal clock is double the speed of the external clock. During high speed test, this causes the data to be written or presented to the data path two times. This invention provides a circuit and method for creating a full-speed data transition scheme to overcome this double speed testing problem. | 2008-12-11 |
20080304333 | SEMICONDUCTOR INTEGRATED CIRCUIT AND METHOD OF ALLOCATING CODES - A semiconductor integrated circuit includes a plurality of terminals, a first latch configured to, upon being uniquely specified by a first predetermined number of bits that are part of a plurality of bits entered through the terminals, store a second predetermined number of bits that are at least part of remaining bits left after excluding the first predetermined number of bits from the plurality of bits, and a second latch configured to, upon being uniquely specified by a third predetermined number of bits that are part of the plurality of bits entered through the terminals, store a fourth predetermined number of bits that are at least part of remaining bits left after excluding the third predetermined number of bits from the plurality of bits, wherein the first predetermined number is different from the third predetermined number, and the second predetermined number is different from the fourth predetermined number. | 2008-12-11 |
20080304334 | SYNCHRONOUS SEMICONDUCTOR MEMORY DEVICE HAVING ON-DIE TERMINATION CIRCUIT AND ON-DIE TERMINATION METHOD - A synchronous semiconductor memory device having an on-die termination (ODT) circuit, and an ODT method, satisfy ODT DC and AC parameter specifications and perform an adaptive impedance matching through an external or internal control, by executing an ODT operation synchronized to an external clock. The synchronous semiconductor memory device having a data output circuit for performing a data output operation synchronously to the external clock includes the ODT circuit for generating ODT up and down signals having the same timing as data output up and down signals for the data output operation, to perform the ODT operation. | 2008-12-11 |
20080304335 | Semiconductor memory device including apparatus for detecting threshold voltage - A semiconductor device including a threshold voltage detector and a boosted voltage generating unit. The threshold voltage detector detects a threshold voltage level of cell transistors and outputs a detected threshold voltage level. The boosted voltage generating unit changes a target level of a boosted voltage in response to the detected threshold voltage level. The threshold voltage detector includes a detected current generating unit and a detected voltage generating unit. The detected current generating unit has a plurality of cell transistors in a cell array and generates a detected current whose amplitude varies corresponding to an average level of the threshold voltages of the cell transistors. The detected voltage generating unit generates the detected threshold voltage level whose level is determined corresponding to the amplitude of the detected current. | 2008-12-11 |
20080304336 | SEMICONDUCTOR MEMORY DEVICE WITH ZQ CALIBRATION - A semiconductor memory device is capable of outputting calibration codes to an external circuit. The semiconductor memory device includes a data output control unit for controlling an output of data, a calibration code output control unit for transmitting calibration codes to determine a termination resistance value, a test mode signal generating unit for generating a test mode signal which is enabled in the test mode for outputting the calibration codes, and a test mode control unit for selectively outputting the data or the calibration codes in response to the test mode signal. | 2008-12-11 |
20080304337 | METHOD FOR ACCESSING MEMORY - A method for accessing memory is provided. The memory includes many multi-level cells each having at least a storage capable of storing 2 | 2008-12-11 |
20080304338 | SEMICONDUCTOR MEMORY DEVICE - To provide a semiconductor memory device capable of increasing its drive capability at operating time while reducing a leak current at standby time without the s need to make a significant change to the design of an existing semiconductor memory device a semiconductor memory device having a memory cell comprises: a latch section that includes a transistor having a back gate to which a back gate voltage is supplied; a memory cell that includes a transfer gate constituting the memory cell the transfer gate being subjected to switching control by a word line signal and having a lo back gate to which a back gate voltage is supplied; and a back gate voltage control circuit that controls the back gate voltage based on an address signal. | 2008-12-11 |
20080304339 | Apparatus and Method of Operating an Integrated Circuit Technical Field - The method of operating an integrated circuit including the step of writing to a memory cell, which can assume a first and a second logical state and wherein a change from the second logical state to the first logical state lasts longer than a change from the first logical state to the second logical state, includes reading the logical state of the memory cell, changing, depending on the logical state of the memory cell read, the logical state to the first logical state or retaining the same in the first logical state and, depending on the logical state to be written, changing the logical state to the second logical state or retaining the same in the first logical state. | 2008-12-11 |
20080304340 | DATA I/O LINE CONTROL CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT HAVING THE SAME - A data I/O line control circuit includes a control unit for outputting a control signal after a predetermined time from an activation of a column select signal, and a switching unit for selectively separating a pair of first sub-middle I/O lines, which is coupled to a pair of local I/O lines located at one side of the switching unit, from a pair of second sub-middle I/O lines, which is coupled to both the pair of the local I/O lines and a data bus sense amplifier located at the other side of the switching unit. | 2008-12-11 |
20080304341 | REDUNDANCY CIRCUIT - A redundancy circuit can include a first fuse set that is configured to receive an address signal and an initializing signal activated when power is up, and to output a first redundancy signal, the first redundancy signal being used to repair a defective cell by using a laser beam radiating method, a second fuse set that is configured to receive the initializing signal, a specific address signal, a test mode signal that is activated when a defective cell exists, and the address signal, and to output a second redundancy signal, the second redundancy signal being used to repair the defective cell by using an electrical fusing method, a first memory cell array that is controlled by the first redundancy signal, and a second memory cell array that is controlled by the second redundancy signal. | 2008-12-11 |
20080304342 | SEMICONDUCTOR MEMORY DEVICE WITH REDUNDANCY CIRUIT - A semiconductor device has a memory cell, decoders, a redundancy circuit and a mode setting circuit. The memory cell array has word lines including a redundant word line, bit lines and memory cells. A row decoder selects the word lines in response to a row address. Further, the row address decoder selects the redundant word line when a replacement signal is received. A column decoder selects the bit lines in response to a column address. A row address redundancy circuit stores a redundant row address. The row address redundancy circuit provides the replacement signal when the redundant row address corresponds to the received address. The mode setting circuit receives a mode signal having a normal mode and a test mode. The mode setting circuit outputs the replacement signal to the row decoder when the mode signal is in the normal mode, and prohibits an output of the replacement signal. | 2008-12-11 |
20080304343 | METHOD AND APPARATUS FOR TESTING A CIRCUIT - A system and method for testing a memory array are disclosed which may include establishing a stored data vector, including a plurality of data bits, within at least one circuit; applying one or more logical operations on the stored data vector to generate a succession of original data vectors at the at least one circuit; transmitting the succession of original data vectors through a memory array to provide a succession of exercised data vectors; comparing the succession of exercised data vectors to the succession of respective original data vectors; and determining whether the memory array passes or fails based on the comparing step. | 2008-12-11 |
20080304344 | Word line driving circuit, semiconductor memory device including the same, and method for testing the semiconductor memory device - A semiconductor memory device in accordance with the present invention is able to facilitate detecting whether a word line fails or not by floating the word line. The semiconductor memory device includes a word line driver, and a floating controller. The word line driver is configured to control a word line to be enabled/disabled. The floating controller is configured to control the word line driver to float the word line in response to a word line floating signal. | 2008-12-11 |
20080304345 | Semiconductor memory device with reduced number of channels for test operation - A semiconductor memory device includes a plurality of memory banks, a data pin for inputting and outputting data, and input/output buffers connected to the data pin. Each of the memory banks has a plurality of memory cells for storing the data. The data pin is enabled and disabled by a pin selection signal. The data pin performs a normal data input/output operation when the pin selection signal is enabled and a termination resistor connected to the data pin is off when the pin selection signal is disabled. The input/output buffers make a termination resistor connected to the data pin off when the pin selection signal is disabled. | 2008-12-11 |
20080304346 | Apparatus and method reducing aging in a data storage device - An apparatus for reducing aging of at least one transistor device employed in a read path for a data storage device may include: a signal unit coupled with the at least one transistor device and coupled with the data storage device. The signal unit may be coupled for receiving an input signal from the data storage device related with operation of the data storage device. The signal unit may provide a first signal to the at least one transistor device when the input signal is in a first state. The signal unit may provide a second signal to the at least one transistor device when the input signal is in a second state. The first signal may be a variable signal. | 2008-12-11 |
20080304347 | ONE TIME PROGRAMMABLE ELEMENT SYSTEM IN AN INTEGRATED CIRCUIT - A system with a repairable memory array having redundant memory cells to replace one or more defective memory cells that are detected after fabrication. The system also includes non memory array circuits having circuitry that may adjust one or more operating parameters such as operating current, operating voltage, resistance, capacitance, timing characteristics and an operating mode. A set of one time programmable elements can be used to selectively store information for modifying operating parameters and replacing the defective memory cells with redundant memory cells. | 2008-12-11 |