Patent application number | Description | Published |
20080293352 | IDENTIFICATION OF SELF JAMMER TONE FOR SUPPRESSION THEREOF IN RFID SYSTEMS OR THE LIKE - Briefly, in accordance with one or more embodiments, a self jammer may be detected and suppressed from a received signal by embedding a pilot tone in the transmitted signal and then detecting the pilot tone in the received signal. Detection of the pilot tone in the received signal indicates the presence of a self jammer. A phase shifted and attenuated version of the transmitted signal may be combined with the received signal to suppress and/or cancel the self jammer signal from the received signal. | 11-27-2008 |
20090001929 | WIRELESS CHARGING DEVICE WITH REFLECTED POWER COMMUNICATION - Disclosed is a wireless charging device for charging electronic devices placed in a docking area of the wireless charging device. The wireless charging device includes an inductive coupler, a reflected power detector, a power source and a power control system. The inductive coupler is configured to charge at least one electronic device present in the docking area. The inductive coupler takes power form the power source. The inductive coupler is also configured to communicate with the electronic device to exchange a set of information. The reflected power detector is operably coupled to the inductive coupler and identifies the set of information exchanged by the inductive coupler. The power control system is operably coupled to the reflected power detector and the power source. The power control system controls the charging of the electronic device by the power source based on the set of information identified by the reflected power detector. | 01-01-2009 |
20090033463 | SWITCHABLE ACTIVE-PASSIVE RFID TAG - Various embodiments of the invention combine a passive RFID tag with a manually switchable battery for additional transmit range when needed. In some embodiments, connecting the battery may also modify the contents of the data transmitted from the RFID tag. This feature may be particularly useful in applications in which a device generally only needs to identify itself as being in a small area, but may occasionally need to send out an alert with greater range. | 02-05-2009 |
20090034107 | REDUNDANT DATA ON HARD DRIVE - Duplicate copies of data may be stored in different sectors on the same track of a disk drive. When reading the data, the data may read from the sector that passes under the read head soonest, thus decreasing data access latency. In some embodiments, the duplicate sectors may be equally spaced around the track. In some embodiments, the spin rate of the disk drive may be reduced to save power, with the increased data latency that would normally be created by the reduced spin rate to be at least partially offset by the decreased data latency created by using multiple copies of the data in the different sectors | 02-05-2009 |
20090040047 | RFID System and Method of Communication Therein - Disclosed is an RFID system. The RFID system comprises a plurality of RFID tags and an RFID reader. The RFID reader communicates with the plurality of RFID tags. The RFID reader is capable of sending a signal, which represents a time gap required in successive responses of each RFID tag of the plurality of RFID tags to the RFID reader. Each RFID tag of the plurality of RFID tags is capable of maintaining the time gap in successive responses to the RFID reader. | 02-12-2009 |
20090069970 | COMPONENT IDENTIFICATION SYSTEM AND METHOD THEREOF - Disclosed are a system and a method for identifying components in an assembly. The system comprises an assembly including one or more components and a power harvesting device, and a reader. The power harvesting device provides power to the one or more components and queries component identification information from the one or more components. The one or more components provide the power harvesting device with the component identification information which is relayed to the reader by the power harvesting device. The system allows determination of the components of the assembly while precluding the need for dismantling the assembly or powering on the assembly to run diagnostic software. | 03-12-2009 |
20090146195 | Noise reduction in active pixel sensor arrays - A system for detecting high speed noise in active pixel sensors includes a photodiode for receiving low levels of light, a reset transistor, an amplifier transistor, a row select transistor, and a high-speed analog-to-digital converter. The reset transistor gate receives a reset signal, and the reset transistor drain receives a reset voltage. The amplifier transistor gate is connected to the photodiode and the reset transistor's source. The amplifier transistor receives a supply voltage at the drain terminal. The row select transistor gate terminal receives a row select signal. The row select drain terminal is connected to the amplifier transistor source terminal. The high-speed analog-to-digital converter includes an analog input port connected to the row select transistor source and a digital output port capable of resolving high-speed excitation events received by the photodiode. | 06-11-2009 |
20110102644 | NOISE REDUCTION IN ACTIVE PIXEL SENSOR ARRAYS - A system for detecting high speed noise in active pixel sensors includes a photodiode for receiving low levels of light, a reset transistor, an amplifier transistor, a row select transistor, and a high-speed analog-to-digital converter. The reset transistor gate receives a reset signal, and the reset transistor drain receives a reset voltage. The amplifier transistor gate is connected to the photodiode and the reset transistor's source. The amplifier transistor receives a supply voltage at the drain terminal. The row select transistor gate terminal receives a row select signal. The row select drain terminal is connected to the amplifier transistor source terminal. The high-speed analog-to-digital converter includes an analog input port connected to the row select transistor source and a digital output port capable of resolving high-speed excitation events received by the photodiode. | 05-05-2011 |
20120110660 | TIME-DOMAIN REFLECTOMETRY USED TO PROVIDE BIOMETRIC AUTHENTICATION - An electronic device includes one or more Time-Domain Reflectometor (TDR) channels and a security block embedded at a silicon or software level to measure human electrical impedance and characteristics for biometric identification and provide biometric authentication. | 05-03-2012 |
20120194133 | ACTIVE CELL BALANCING USING INDEPENDENT ENERGY TRANSFER BUS FOR BATTERIES OR OTHER POWER SUPPLIES - A system includes a power source having multiple energy storage power cells. The system also includes multiple cell active balancing circuits. Each active balancing circuit is coupled across and associated with at least one of the power cells. Each active balancing circuit is also configured to provide energy to and draw energy from the at least one associated power cell. The system further includes an energy transfer bus configured to transfer energy between the active balancing circuits. In addition, the system includes a controller configured to control the transfer of energy between the active balancing circuits in order to control balancing of charges on the power cells. Each active balancing circuit could include a bi-directional direct current-to-direct current converter configured to convert and transfer DC energy between the associated power cell(s) and the energy transfer bus. The power source could include a battery, and the power cells could include battery cells within the battery. | 08-02-2012 |
20120194466 | HAPTIC INTERFACE FOR TOUCH SCREEN IN MOBILE DEVICE OR OTHER DEVICE - A method includes identifying a position of a user's touch on a touch screen, a velocity of the user's touch across the touch screen, and a pressure of the user's touch on the touch screen. The method also includes generating at least one drive signal for driving one or more actuators associated with the touch screen and outputting the at least one drive signal. The at least one drive signal is configured to cause the one or more actuators to generate a desired haptic texture on the touch screen. The at least one drive signal is based on the position, the velocity, and the pressure. For example, a waveform of the at least one drive signal could be based on the position. Also, groups of pulses in the at least one drive signal could have a frequency and waveform based on the velocity or an amplitude based on the pressure. | 08-02-2012 |
20130009906 | CAPACITIVE TOUCH SCREEN SENSING AND ELECTRIC FIELD SENSING FOR MOBILE DEVICES AND OTHER DEVICES - A system includes a touch screen having multiple electrodes. The system also includes a processing unit configured to use the electrodes to (i) detect an object contacting the touch screen or within a first distance from the touch screen in a first mode and (ii) detect the object within a second distance from the touch screen in a second mode. The second distance is larger than the fist distance. The processing unit can be configured to use the multiple electrodes in the first mode to perform capacitive touch screen sensing. The processing unit can also be configured to use the multiple electrodes in the second mode to perform electric field sensing. | 01-10-2013 |
20130182539 | MULTIPATH REFLECTION PROCESSING IN ULTRASONIC GESTURE RECOGNITION SYSTEMS - A method includes identifying a position of a static reflector near an ultrasonic transmitter. The method also includes transmitting ultrasonic signals from the ultrasonic transmitter. The method further includes receiving reflected ultrasonic signals at an ultrasonic receiver, where the received ultrasonic signals include a direct reflection directly from a target and a multipath reflection indirectly from the target via the reflector. In addition, the method includes identifying a location of the target using the reflections and the identified position of the reflector. The identified position of the reflector can be used to determine which pulses in the received ultrasonic signals are from the direct reflection and which pulses in the received ultrasonic signals are from the multipath reflection. The pulses in the received ultrasonic signals from the multipath reflection could be discarded or combined with the pulses in the received ultrasonic signals from the direct reflection. | 07-18-2013 |
20130188458 | MUT Circuit with an Electrically Controllable Membrane - A micromachined ultrasonic transducer (MUT) circuit, which has a MUT with a MUT membrane that can vibrate back and forth to transmit an ultrasonic wave, electrically controls the movement of the MUT membrane by controllably transferring energy to the MUT membrane, thereby allowing the MUT membrane to transmit substantially any desired ultrasonic wave. | 07-25-2013 |