Patent application number | Description | Published |
20080238539 | ARRANGEMENT FOR CANCELING OFFSET OF AN OPERATIONAL AMPLIFIER - Operational amplifier circuitry drives a device which may be run with a combination of output signals fewer in number than the output signals delivered from plural output circuits. Each output circuit adjusts the gain of an input signal supplied to its operational amplifier. An output selector selects and outputs output signals from the output circuits necessary for driving the device. A decision circuit compares an output signal not selected with a reference signal to adjust the gain of the output circuits to thereby cancel the offset of the operational amplifier. The operational amplifier has sets of feedback elements different in number between the sets formed by capacitances. Switching is made from one set to another until the decision circuit makes an acceptable decision. Offset may thus be canceled during the operational amplification even in case capacitive or resistance element is connected in circuit outside the operational amplifier. | 10-02-2008 |
20080303577 | ARRANGEMENT FOR CANCELING OFFSET OF DRIVER AMPLIFIER CIRCUITRY - In an offset canceling arrangement, an offset of an operational amplifier may be canceled even in case capacitive or resistive element is connected outside of the operational amplifier per se, and a signal may be output even during the offset canceling operation. IC chips include respective sets of plural output circuits. Each of the IC chips is provided with an offset canceling function, for which the respective sets of output circuits are grouped into plural groups. A reference signal for offset canceling is generated from a reference output circuit. One of the groups, each constituting one IC chip, is selected, and the reference signal for offset canceling generated by the group is used as a reference signal for offset canceling for the remaining group(s). | 12-11-2008 |
20090085788 | MULTI-INPUT OPERATIONAL AMPLIFIER CIRCUIT, DIGITAL/ANALOG CONVERTER USING SAME, AND DRIVER FOR DISPLAY DEVICE USING SAME - A multi-input operational amplifier circuit operable with a high degree of accuracy and in a small area, a D/A converter using the multi-input operational amplifier circuit, and a drive circuit or driver for a display device, using the D/A converter. In embodiments of the multi-input operational amplifier circuit, a constant current source of a third differential amplifier circuit that causes a doubled constant current i×2 to flow with respect to constant current sources of first and second differential amplifier circuits by application of two types of bias voltages thereto is configured using PMOS of the same number and size. Therefore, operations equivalent to those of a conventional circuit may be realized by the three constant current source PMOSs, and a smaller chip size may be required. | 04-02-2009 |
20100123704 | DISPLAY PANEL DRIVING APPARATUS - The present disclosure provides a display panel driving apparatus that can make the circuit layout surface area smaller, and prevent circuit damage. The display panel driving apparatus includes a source amplifier, a sink amplifier, a switch and the like. The source amplifier includes a first output circuit, a second output circuit and the like, and a guard transistor is provided between the first output circuit and the second output circuit to prevent an output signal voltage of the first output circuit from becoming less than an intermediate voltage. The sink amplifier includes a first output circuit and a second output circuit, and a guard transistor is provided between the first output circuit and the second output circuit to prevent an output signal voltage of the first output circuit from exceeding an intermediate voltage. | 05-20-2010 |
20100123705 | OPERATIONAL AMPLIFIER AND DISPLAY PANEL DRIVING DEVICE - An operational amplifier includes an output circuit and a differential circuit. The output circuit outputs a voltage in a voltage range determined either from a highest voltage that is an upper limit of a predetermined power source range, or from a lowest voltage that is a lower limit of the predetermined power source range, to an intermediate voltage that is a voltage between the highest voltage and the lowest voltage. The differential circuit includes a first MOS transistor to which a driving signal for driving a display panel is input and a second MOS transistor to which a given input signal is input. The first MOS transistor and the second MOS transistor are connected in parallel, and a differential input-permissible-range of the differential circuit is wider than the voltage range of the output circuit. | 05-20-2010 |
20100127378 | SEMICONDUCTOR DEVICE AND SEMICONDUCTOR PACKAGE - There is provided a semiconductor device including: plural bit cells each including the same circuit; plural electrodes supplied with power from outside, wherein each of the respective plural electrodes is mounted above the same circuit within the plural bit cells. Further, there is provided a semiconductor package including: the semiconductor device; a substrate mounted with the semiconductor device; an external input terminal formed on the substrate; an external output terminal formed on the substrate; an input wiring pattern connecting the semiconductor device mounted above the substrate and the external input terminal; an output wiring pattern connecting the semiconductor device mounted above the substrate and the external output terminal; and plural power supply lines, arranged without contact with each other on the same face of the substrate, and connecting the plural electrodes mounted to the semiconductor device to the corresponding electrode from the plural external power input electrodes. | 05-27-2010 |
20100127406 | SEMICONDUCTOR DEVICE - There is provided a semiconductor device including: plural first output pads formed along one edge of an outer periphery of a substrate; plural second output pads formed along at least one of an edge at an opposite side of the substrate from the one edge, and an edge adjoining the one edge; plural internal circuits, each of which is provided with an output terminal connected with an output pad of one of the first output pads and the second output pads; plural first lines, each of which connects one of the output terminals of the internal circuits with one of the plurality of first output pads; and plural second lines, each of which connects one of the output terminals of the internal circuits with one of the plural second output pads, resistance values per unit of wiring length being lower in the second lines than in the first lines. | 05-27-2010 |
20110157120 | DRIVE CIRCUIT AND DISPLAY DEVICE - A drive circuit for driving a display panel includes a first operation amplifier for operating using a first power source voltage and a second power source voltage; a second operation amplifier for operating using a third power source voltage and a fourth power source voltage; a control unit for supplying a first control voltage and a second control voltage; and a switch circuit for switching the first operation amplifier and the second operation amplifier. The switch circuit includes an n-channel type field effect transistor. The control unit applies the first control voltage to the n-channel type field effect transistor, so that the n-channel type field effect transistor transits from a non-conductive state to a conductive state. | 06-30-2011 |
20120001952 | DRIVING CIRCUIT AND DISPLAY APPARATUS - A driving circuit includes a pair of operational amplifiers, one producing an analog voltage output of positive polarity, the other producing an analog voltage output of negative polarity. An output switching circuit interchanges these outputs between a pair of data lines. One or both of the operational amplifiers includes a parasitic diode having one terminal connected to the output terminal of the operational amplifier and another terminal normally connected to a power supply voltage of the operational amplifier. When the output of the operational amplifier is switched, a protective switching circuit temporarily disconnects the parasitic diode from the power supply of the operational amplifier and instead connects it to a power supply line carrying a voltage high enough, or low enough, to ensure that the parasitic diode is not forward biased by the existing voltage on the data line to which the output is switched. | 01-05-2012 |
20140043221 | DEVICE CIRCUIT AND DISPLAY APPARATUS HAVING OPERATIONAL AMPLIFIERS WITH PARASITIC DIODES - A driving circuit includes a pair of operational amplifiers, one producing an analog voltage output of positive polarity, the other producing an analog voltage output of negative polarity. An output switching circuit interchanges these outputs between a pair of data lines. One or both of the operational amplifiers includes a parasitic diode having one terminal connected to the output terminal of the operational amplifier and another terminal normally connected to a power supply voltage of the operational amplifier. When the output of the operational amplifier is switched, a protective switching circuit temporarily disconnects the parasitic diode from the power supply of the operational amplifier and instead connects it to a power supply line carrying a voltage high enough, or low enough, to ensure that the parasitic diode is not forward biased by the existing voltage on the data line to which the output is switched. | 02-13-2014 |
Patent application number | Description | Published |
20080204498 | INK-JET PRINTER - An ink-jet printer that prints on a second side of a print medium subsequent to printing on a first side of the print medium includes gate rollers, the inclination of the print medium with respect to a direction along which the print medium is transported being adjusted by bringing a leading portion of the print medium in the direction along which the print medium is transported into contact with a nip formed between the gate rollers such that the print medium is warped; a feed roller that feeds the print medium to the gate rollers such that the print medium comes into contact with the gate rollers and is warped; and a warpage controller that controls the amount of warpage of the print medium formed by the feed roller in accordance with a printing state of the first side of the print medium. | 08-28-2008 |
20090244130 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head disposed on a transport path of a target to eject liquid from nozzles at a nozzle forming surface, a target transport unit transporting the target on the basis of a driving force of a first driving source such that the target passes through a position opposite the nozzle forming surface on the transport path, a liquid receptor transport unit transporting a liquid receptor for receiving the liquid ejected from the nozzles as a waste liquid on the basis of a driving force of a second driving source such that the liquid receptor passes through the position opposite the nozzle forming surface on the transport path, and a control unit controlling a driving state of the second driving source in order to change a transport velocity of the liquid receptor by the liquid receptor transport unit while the liquid receptor is transported. | 10-01-2009 |
20090244148 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head disposed on a transport path of a target to eject a liquid from nozzles at a nozzle forming surface, a liquid receptor transport unit transporting a liquid receptor for receiving the liquid ejected from the nozzles as a waste liquid such that the liquid receptor passes through a position opposite the nozzle forming surface on the transport path, and a control unit controlling a liquid ejection timing from the nozzles of the liquid ejecting head such that, when the liquid receptor to be transported by the liquid receptor transport unit passes through the position opposite the nozzle forming surface, the liquid is ejected from the nozzles within a predetermined range of liquid receiving area, which is set at a central portion, excluding edge portions in a movement direction, on a surface of the liquid receptor opposite the nozzle forming surface. | 10-01-2009 |
20090244245 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head disposed on a transport path of a target to eject a liquid from nozzles at a nozzle forming surface, a target transport unit transporting the target such that the target passes through a position opposite the nozzle forming surface on the transport path, and a liquid receptor transport unit transporting a liquid receptor for receiving the liquid ejected from the nozzles as a waste liquid such that the liquid receptor passes through the position opposite the nozzle forming surface on the transport path. With rotation of the target transport unit, a mechanism unit including a target transport member for transporting the target in a transport direction is able to be attached and detached at a position out of a mechanism portion of the liquid receptor transport unit with respect to the liquid ejecting apparatus. | 10-01-2009 |
20120069076 | RECORDING APPARATUS - A recording apparatus includes a supporting member on which a plurality of suction holes for sucking a recording medium are formed on a supporting face for supporting the recording medium, a transportation device which transports the recording medium along the supporting face, a recording head which ejects fluid on the recording medium supported by the supporting face so as to perform printing, and a control device which makes the recording head execute the printing when a front end of the recording medium in the transportation direction reaches to a position at which the front end of the recording medium covers the suction holes formed at downstream-most positions in the transportation direction on the supporting face. | 03-22-2012 |
20120113179 | RECORDING APPARATUS - A recording apparatus includes: a support member in which a plurality of suction holes that apply suction to a recording medium are formed in a support surface that supports the recording medium; a transport device that transports the recording medium along the support surface; a recording head that prints onto the recording medium supported by the support surface by ejecting a fluid; and a regulating member, provided downstream from the suction holes formed in the location that is furthest downstream in the transport direction, that suppresses the recording medium from lifting off the support surface by more than a predetermined height. | 05-10-2012 |
20120327152 | RECORDING APPARATUS AND RECORDING METHOD - A recording apparatus includes: a transport unit that unrolls and transports a recording medium being wound in a roll to the downstream side along a transport path of the recording medium; a recording unit that performs recording processing on the recording medium in a recording region positioned halfway on the transport path; and a control unit that controls the transport unit so that an amount of protrusion of the leading edge portion of the recording medium from the recording region to the downstream side is varied based on an amount of curling of the leading edge portion of the recording medium due to the curling tendency of the recording medium having been unrolled by the transport unit when the recording processing is performed on the recording medium by the recording unit. | 12-27-2012 |
20130195537 | RECORDING APPARATUS - A recording apparatus includes a supporting member on which a plurality of suction holes for sucking a recording medium are formed on a supporting face for supporting the recording medium, a transportation device which transports the recording medium along the supporting face, a recording head which ejects fluid on the recording medium supported by the supporting face so as to perform printing, and a control device which makes the recording head execute the printing when a front end of the recording medium in the transportation direction reaches to a position at which the front end of the recording medium covers the suction holes formed at downstream-most positions in the transportation direction on the supporting face. | 08-01-2013 |
20140078216 | RECORDING APPARATUS - A recording apparatus includes a supporting member on which a plurality of suction holes for sucking a recording medium are formed on a supporting face for supporting the recording medium, a transportation device which transports the recording medium along the supporting face, a recording head which ejects fluid on the recording medium supported by the supporting face so as to perform printing, and a control device which makes the recording head execute the printing when a front end of the recording medium in the transportation direction reaches to a position at which the front end of the recording medium covers the suction holes formed at downstream-most positions in the transportation direction on the supporting face. | 03-20-2014 |
20140210920 | RECORDING APPARATUS - A recording apparatus includes a plurality of line heads that discharge light curable inks onto a recording target material, a plurality of first light irradiators that are located at downstream side of transportation direction relative to the respective line heads in the transportation direction and emit light to the recording target material, a drum that is located at the downstream side relative to the first light irradiators in the transportation direction and forms a part of the transportation path, and a second light irradiator that is located opposite to a portion of the drum with which the transported recording target material makes contact and emits light to the contact portion. In the recording apparatus, the first light irradiators emit light for provisionally curing the discharged light curable inks, and the second light irradiator emits light for permanently curing the light curable inks, which have been provisionally cured, on the drum. | 07-31-2014 |
Patent application number | Description | Published |
20080299805 | Connector of a double-sided connection type with a flexible internal mechanism - In a connector to be connected by press contact in a connecting direction, plural contacts are coupled to a first frame having two principal surfaces opposite to each other in the connecting direction. A second frame is coupled to the first frame and guides the first frame in a specific direction perpendicular to the connecting direction. Each of the contacts includes an insulating elastic member and a conductor combined with the elastic member. The conductor includes portions protruding from the principal surfaces, respectively. | 12-04-2008 |
20090212832 | LOAD CAPACITY DRIVING CIRCUIT - The present invention provides a load capacity driving circuit that is inexpensive and has a high driving capability. When an input signal changes to low potential, gate voltage of an output stage of an amplifying circuit increases, an NMOS transistor MNO turns on, and an NMOS transistor MN | 08-27-2009 |
20130260586 | CONNECTOR - A connector comprises a housing extending in a front-rear direction and a sealing member attached in the housing. The housing has a rear wall located at a rear end portion of the housing and an enclosed portion extending from the rear wall in the front-rear direction. When the housing is formed by a molding process, a metal mold is used to form a plurality of seal stoppers around the enclosed portion. Each of the seal stoppers protrudes from the enclosed portion in a direction perpendicular to the front-rear direction. The housing has a plurality of holes which are formed when the metal mold is removed from the housing. Each of the holes pierces the rear wall in the front-rear direction. The holes face the respective seal stoppers in the front-rear direction. The sealing member is attached to the enclosed portion so as to be located between the rear wall and the seal stoppers in the front-rear direction. The front sides of the holes are covered by the sealing member. | 10-03-2013 |
20130288543 | CONNECTOR - A connector comprises a housing, a power contact attached to the housing, and a fixing member fixing the power contact to the housing. The connector is mateable along a front-rear direction with a mating connector located at a mating side. The housing has a rear wall, a contact-holding hole and an abutment portion, wherein the contact-holding hole pierces the rear wall in the front-rear direction, and the abutment portion is located toward the mating side with respect to the contact-holding hole. The power contact has a held portion, a fixed portion and an abutting portion, wherein the held portion is inserted in the contact-holding hole from the mating side to be held by the contact-holding hole, the fixed portion is formed to be located far from the mating side with respect to the held portion, and the abutting portion is formed to be located toward the mating side with respect to the held portion so that the abutting portion is brought into abutment with the abutment portion when the held portion is inserted in the contact-holding hole. The fixing member is attached to the held portion so that a part of the housing is sandwiched between the abutting portion and the fixing member in the front-rear direction. | 10-31-2013 |