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| Number | Title | Issue Date |
| 7855927 | NAND system with a data write frequency greater than a command-and-address-load frequency The invention provides methods and apparatus. A NAND flash memory device receives command and address signals at a first frequency and a data signal at a second frequency that is greater than the first frequency. ... | 12/21/2010 |
| 7796450 | Radio frequency (RFID) tag including configurable single bit/dual bits memory A configurable memory device includes an array of configurable memory units arranged into rows and columns. The configurable memory unit includes a memory cell comprising a first storage element configured to store a first value and a second storage element configur... | 09/14/2010 |
| 7742348 | Concatenated pointers for radio frequency identification tags Methods and systems are provided for improved protection of radio frequency identification tag memory by using two or more “brownout-safe” pointer registers (instead of a single pointer register) that are logically concatenated to form a complete address for the... | 06/22/2010 |
| 7710798 | State storage with defined retention time A state storage device for use in an RFID tag includes, in at least one embodiment, a capacitor coupled to a high impedance node. The storage device can be configured to indicate a high or low bit condition. The high impedance node can be designed to dissipate the s... | 05/04/2010 |
| 7675796 | Semiconductor device Information stored in a nonvolatile storage device mounted to a semiconductor device is read by inputting an address signal or the like and by using a sense amplifier or the like. At this time, since a prescribed period of time is required, it is necessary to design... | 03/09/2010 |
| 7675795 | Semiconductor device, wireless chip, IC card, IC tag, transponder, bill, securities, passport, electronic apparatus, bag, and garment The invention provides an ID chip to which data can be written only once in order to maintain high security as a non-contact type ID chip to which signals are inputted wirelessly from an antenna. A non-contact type ID chip includes a nonvolatile FeRAM in the chip. D... | 03/09/2010 |
| 7602658 | RFID device having nonvolatile ferroelectric memory device A RFID device having a nonvolatile ferroelectric memory regulates bit line capacitance to optimize a bit line sensing margin and minimize power consumption. The RFID device having an analog block adapted and configured to transmit and receive a radio frequency signa... | 10/13/2009 |
| 7599233 | RFID device having nonvolatile ferroelectric memory device An RFID device is provided to perform a pumping operation when a read or write operation of a memory cell is performed to reduce current consumption. The RFID device includes an analog block, a digital block, and a memory block including at least one ferroelectric c... | 10/06/2009 |
| 7558131 | NAND system with a data write frequency greater than a command-and-address-load frequency The invention provides methods and apparatus. A NAND flash memory device receives command and address signals at a first frequency and a data signal at a second frequency that is greater than the first frequency. ... | 07/07/2009 |
| 7429002 | Electrical device with stored data The invention relates to an electrical device with a logic circuit and with a storage medium which is connected to the logic circuit and in which data are stored. The storage medium is provided with a data link via which data can be read out outside the device with ... | 09/30/2008 |
| 7405984 | System and method for providing programmable delay read data strobe gating with voltage and temperature compensation A method for providing programmable delay read data strobe gating with voltage and temperature compensation. The method includes receiving a training request. The method further includes calibrating programmable delay lines for operating frequency and voltage and te... | 07/29/2008 |
| 7366966 | System and method for varying test signal durations and assert times for testing memory devices A testing system includes a phase interpolator receiving a clock signal. An output of the phase interpolator is coupled to both a first signal distribution tree that includes a first delay line in each of its branches and a second signal distribution tree that inclu... | 04/29/2008 |
| 7366039 | RFID device having nonvolatile ferroelectric memory device A RFID device having a nonvolatile ferroelectric memory regulates bit line capacitance to optimize a bit line sensing margin and minimize power consumption. The RFID device having an analog block adapted and configured to transmit and receive a radio frequency signa... | 04/29/2008 |
| 7362625 | Interface configuration by a memory tag A memory tag is powered by and addressable via a radio frequency wireless link to read data from a memory. The memory tag is addressable by a reader. The memory holds data and interface configuration information relating to the operation of an interface device. This... | 04/22/2008 |
| 7362156 | Reliable phase adjustment circuit A phase adjustment circuit generates multiple clock signals by, for example, successively delaying a first clock signal. One of the generated clock signals is selected and output. A phase difference detector determines whether the phase of the selected clock signal ... | 04/22/2008 |
| 7355458 | Output driver circuit and a method of transmitting an electrical signal via an output driver circuit In an output driver circuit, the signal propagation time of an electrical signal which is to be transmitted between two selected driver stages is ascertained. If the ascertained signal propagation time is at least equal to half the period duration of the signal whic... | 04/08/2008 |
| 7340559 | Memory product controller, memory product control method, and memory product To provide a memory product controller, a memory product control method, and a memory product storing a computer program, capable of realizing a multi-function memory product, without increasing the cost, by grouping a plurality of memory products. In a memory produ... | 03/04/2008 |
| 7339838 | Method and apparatus for supplementary command bus An electronic system according to various aspects of the present invention includes a memory having a location-specific command interface and a general command interface. The memory communicates with other components in the system via a main command bus configured t... | 03/04/2008 |
| 7320048 | Apparatus and method to switch a FIFO between strobe sources A first-in, first-out (FIFO) unit switches between strobe sources. The FIFO uses a multiplexer to switch between two or more strobes so that different data strobes may be used with the FIFO to strobe in the data. In one implementation, the FIFO uses four data latche... | 01/15/2008 |
| 7317303 | Rectified power supply A power supply creates a voltage difference between high and low power supply rails. The power supply has a voltage signal source, a capacitive coupling element, energy storage element 12, first and second rectifying diodes, a regulator, and bypass means for ... | 01/08/2008 |
| 7289028 | Transponder with two supply voltages In a transponder (1) and an integrated circuit (5), the integrated circuit (5) has two circuit sections (18, 19) that are arranged for supply with two supply voltages of different levels (VL-HV, VL-LV), a first rectifier circuit (20 | 10/30/2007 |
| 7269212 | Low-latency equalization in multi-level, multi-line communication systems Low-latency equalization mechanisms for multi-PAM communication systems are disclosed that reduce delay and complexity in signal correction mechanisms. The equalization mechanisms tap into input signals for a multi-PAM signal driver, and compensate for attenuation a... | 09/11/2007 |
| 7231306 | Method and apparatus for calibrating static timing offsets across multiple outputs Methods and apparatuses for calibrating out static timing offsets across multiple outputs of a transmitting device are provided. In accordance with at least one embodiment, a signal is selected as the master reference signal, and a closed-loop feedback system is pro... | 06/12/2007 |
| 7218204 | Contactless IC card A contactless IC card includes a reference voltage circuit, a judging circuit for monitoring a reference voltage that is outputted from the reference voltage circuit, and a power supply stabilization, unit. The judging circuit judges whether the reference voltage is... | 05/15/2007 |
| 7158408 | Current source control in RFID memory These systems and techniques relating to RFID tags include current source control in RFID memory. According to an aspect, a radio frequency identification tag includes an antenna, a radio frequency interface coupled with the antenna, and a non-volatile memory includ... | 01/02/2007 |
| 7154431 | Signal synthesizer and method therefor A digital synthesizer includes a digital radio frequency memory (DRFM) for storing phase values and corresponding digital signals. The digital synthesizer includes a digital processing circuit receiving input from the DRFM, the circuit including tapped delay lines a... | 12/26/2006 |
| 7141939 | Power supply circuit that is stable against sudden load change A power supply circuit for supplying power to a load includes an antenna which receives electric power, a rectifier coupled to the antenna and configured to convert an alternating voltage supplied from the antenna into a direct-current voltage, a voltage step-down c... | 11/28/2006 |
| 7117292 | Apparatus and method to switch a FIFO between strobe sources A first-in, first-out (FIFO) unit switches between strobe sources. The FIFO uses a multiplexer to switch between two or more strobes so that different data strobes may be used with the FIFO to strobe in the data. In one implementation, the FIFO uses four data latche... | 10/03/2006 |
| 7093765 | Transponder, especially for a contactless chip card A transponder located for example in a contactless smart card receives energy via an antenna (L2) from a high-frequency alternating field. A voltage (Udd) formed with a rectifier (12) is fed as a control quantity to a clock generator (14 | 08/22/2006 |
| 7054198 | Flash memory with fast boot block access A flash memory device and system include a boot block voltage pump for providing a word line voltage to the boot block of the flash memory. At least one additional voltage pump is provided to supply a word line voltage to the remaining memory blocks. The memory devi... | 05/30/2006 |
| 6924688 | Rectifying charge storage device with antenna A composite rectifying charge storage device, consisting of a rectifier and capacitor which share common elements, is combined in a circuit with an antenna for remote energization in response to an external electromagnetic or electrostatic AC field. The energized co... | 08/02/2005 |
| 6923572 | Data acquisition device using radio frequency identification (RFID) system A sensor 2 of a data collection system 2 is designed to make, in a predetermined environment, an operation of writing output data of a sensing circuit 24 into a non-volatile memory 22 as reference-value data, and, in a measurement environ... | 08/02/2005 |
| 6919793 | Radio frequency identification system write broadcast capability A Write Broadcast system and method uses a base station to write sent data to all or some selected number (sub group) of tags in a base station field simultaneously. By unselecting the tags that have been successfully written to, and requesting a response from the r... | 07/19/2005 |
| 6914528 | Wireless communication systems, radio frequency identification devices, methods of enhancing a communications range of a radio frequency identification device, and wireless communication methods Wireless communication systems, radio frequency identification devices, methods of enhancing a communications range of a radio frequency identification device, and wireless communication methods are described. According to one aspect, a wireless communication system... | 07/05/2005 |
| 6813209 | Current integrating sense amplifier for memory modules in RFID A low read current, low power consumption sense amplifier well suited for low frequency RFID systems is disclosed. An MOS transistor receives the read current from a memory cell, typically an EEPROM, and a current mirror is formed by a parallel MOS transistor. The m... | 11/02/2004 |
| 6809952 | Semiconductor integrated circuit, radio frequency identification transponder, and non-contact IC card A rectifier circuit converts an alternating current into a direct-current voltage and outputs it as a power supply voltage. A ferroelectric holding circuit has a volatile holding circuit and a plurality of ferroelectric capacitors. Data held in the ferroelectric hol... | 10/26/2004 |
| 6768414 | Radio frequency identification system write broadcast capability A Write Broadcast system and method uses a base station to write sent data to all or some selected number (sub group) of tags in a base station field simultaneously. By unselecting the tags that have been successfully written to, and requesting a response from the r... | 07/27/2004 |
| 6707727 | Timing signal generator for correctly transmitting a signal at high speed without waveform distortion A driver circuit transmits a signal to a receiver circuit through a signal transmission line. The driver circuit has an output driver, a front driver, and a level adjuster. The front driver drives the output driver, and the level adjuster adjusts the output level of... | 03/16/2004 |
| 6525842 | Image processing apparatus and method of the same and storage medium A clock signal is frequency-modulated and an image processing operation is executed synchronously with the frequency-modulated clock signal to generate image data which is stored in a memory. Image data written in the memory is read synchronously with a c... | 02/25/2003 |
| 6515919 | Radio frequency powered voltage pump for programming EEPROM There is provided an RF-powered, RFID transponder operable in either a high frequency or low frequency band. The transponder utilizes an EEPROM which may be programmed. The high voltage required for writing (i.e., programming) the EEPROM is provided by a ... | 02/04/2003 |
