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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7120216 | Data/clock recovery circuit for recovering data and clock signal with high accuracy A data/clock recovery circuit can recover high-rate data using the data as a clock signal. It includes an edge detector, a clock selection signal generating circuit, a clock selection circuit and a synchronizing circuit. The edge detector generates edge position inf... | 10/10/2006 |
| 7110041 | Teletext data separation apparatus A teletext data separation apparatus has a slice level generating circuit including a slice timing control circuit, a control register, an adder and a divider. The slice timing control circuit generates a timing signal for sampling. The control register carries out ... | 09/19/2006 |
| 7102693 | Data acquisition circuit which changes a range of a reference potential An A/D converter updates its reference potential so that it coincides with an analog potential of a video signal. The A/D converter changes a variable voltage range of the reference potential during the same horizontal synchronizing period based upon a horizontal sy... | 09/05/2006 |
| 7096384 | Fault simulator for verifying reliability of test pattern A fault simulator includes a circuit identifying section that selects, as fault generation points, circuit components subjected to a simulation from timing simulation results obtained by a static timing simulation of an LSI circuit; a fault value computing section t... | 08/22/2006 |
| 7082545 | Method of and device for detecting cable connection The detector includes the plug for connecting the personal computer through a cable, battery power supply which provides a constant power supply, and the MCU which receives a specific potential from the personal computer when the later is connected. ... | 07/25/2006 |
| 7024560 | Power-residue calculating unit using Montgomery algorithm A power-residue calculating circuit includes: an I/F (interface) circuit with respect to an external bus; an e register holding a key e; a Y register holding a multiplier Y for Montgomery conversion; an N register holding a key N; a B2N register holding a value of (... | 04/04/2006 |
| 6998655 | Semiconductor device comprising memories on the inside and outside of bonding pad A semiconductor integrated circuit is capable of filling the need for more memory space through the effective use of an already-designed core block. A block (1) including a CPU, an array (4a) of a plurality of bonding pads, and RAMs (21 | 02/14/2006 |
| 6850246 | Screen display unit capable of displaying greater number of colors on the same screen A screen display unit includes a display RAM to which a CPU writes palette codes corresponding to character codes, and a selector for selecting display color data read from one of two color palettes on a character code by character code basis in response to the pale... | 02/01/2005 |
| 6839014 | One-chip microcomputer with analog-to-digital converter An input circuit of a one-chip microcomputer is connected to an external switching circuit. When an analog input signal of a significant level generated in the external switching circuit is received at an analog input terminal of the input circuit, an A/D conversion... | 01/04/2005 |
| 6820241 | Semiconductor device with voltage down circuit changing power supply voltage to operating voltage A plurality of core chips are arranged on a body of a semiconductor device, and a plurality of voltage down circuits are arranged on the outside of the core chips to lower a power supply voltage to a plurality of operating voltages of the core chips. In cases where ... | 11/16/2004 |
| 6813191 | Microcomputer with nonvolatile memory protected against false erasing or writing A microcomputer includes a nonvolatile memory for storing contents that can be erased from and written to the nonvolatile memory electrically when an erasing/writing voltage is supplied to the nonvolatile memory, and a processor for executing a program stored in the... | 11/02/2004 |
| 6813598 | Logic simulation method and logic simulation apparatus An MWL signal encoding part encodes a signal occurring on a main word signal line, an SD signal encoding part encodes a signal occurring on a subdecode signal line, a WL calculating part calculates a WL value, based on an MWL signal encoded value and an SD signal en... | 11/02/2004 |
| 6753868 | Single-chip microcomputer and method of modifying memory contents of its memory device A CPU including a CPU-side signal line for connecting each of CPU-side memory device, OSD device, and OSD-side memory device to the CPU, and switching means for disconnecting the OSD device and OSD-side memory device from the CPU-side signal line when the CPU erases... | 06/22/2004 |
| 6738853 | Integrated circuit with built-in processor and internal bus observing method An LSI with built-in CPU includes a CPU core, an internal CPU bus connected to the CPU core, an external memory access-use external pin for accessing an external memory and a bus selector for outputting signals of the internal CPU bus to the external memory access-u... | 05/18/2004 |
| 6734918 | Data slicer circuit The data slicer circuit has a first capacitor that holds a pedestal potential of a video signal; a second capacitor that calculates an average potential of signals existing in a period where a clock run-in signal of the multiplex signal is present and holds the aver... | 05/11/2004 |
| 6725375 | Microcomputer and method and apparatus for changing the contents of the memory in the microcomputer There is provided a microcomputer including: an external apparatus discrimination means for discriminating that an external apparatus is connected to said microcomputer via an IC card interface section, based on a discrimination signal to be transmitted by said exte... | 04/20/2004 |
| 6717624 | Line memory in which reading of a preceding line from a first memory and writing of a current line to a second memory are performed in the same time period Two memories respectively have memory capacities which are half of a memory capacity required to store data for one line. In a first time-period of a preceding line is read from a first address of the first memory. In a second time-period dot data of a current line ... | 04/06/2004 |
| 6718357 | Microcomputer including an upper and lower clip circuit A microcomputer is provided with an upper clip circuit for comparing digital values output from an analog-to-digital (AD) converting circuit 1 with a high level reference value A, and replacing a digital value larger than the reference value A with the refere... | 04/06/2004 |
| 6714060 | Master slave flip-flop circuit functioning as edge trigger flip-flop In a master latch circuit, input data signal is received in a data through state and is held in a data holding state as output data signal. In a slave latch circuit, the output data signal is received in a data through state and is held and output in a data holding ... | 03/30/2004 |
| 6606713 | Microcomputer including circuitry for detecting an unauthorized stoppage of the system clock signal A microcomputer comprises a selecting unit for selecting one of a plurality of clock signals generated by a plurality of clock generating sources according to a selection instruction from a central processing unit or CPU, a clock generation stop unit, res... | 08/12/2003 |
| 6518846 | Voltage controlled oscillator with voltage regulation In a voltage controlled oscillator (VCO) having a voltage-current conversion circuit, a ring oscillator, and a main power supply for feeding a power supply voltage to these components, it is constructed so that a voltage which is fed to the voltage-curren... | 02/11/2003 |
| 6483204 | Power supply system with information exchange between plural loads and plural power sources A notebook-sized personal computer representing consumption-side hardware sends electric power data, which indicates an electric power (including voltage, alternating or direct current, cycle and wave shape) suited to the personal computer, to an electric... | 11/19/2002 |
| 6466270 | Phase locked loop circuit and method of controlling jitter of OSD characters The phase locked loop circuit according to the present invention is configured such that the CPU changes the time constant of the variable LPF filter to an optimum value in accordance with the state of the external signal fed from outside, for example by ... | 10/15/2002 |
| 6463551 | Debug circuit and microcomputer incorporating debug circuit A debug circuit (2) and a microcomputer incorporating the debug circuit (2). The debug circuit (2) is capable of receiving a trace event from a functional block A as long as a CPU (5) does not generate any trace event, and capable of receiving the trace e... | 10/08/2002 |
| 6449758 | Apparatus for and method of automatically placing and routing Cell assignment section performs an automatic cell assignment according to circuit data 51. Distribution path determining section automatically determines a distribution path between cells. Distribution information extracting section extracts information ... | 09/10/2002 |
| 6441644 | Logic device for outputting a signal within a through rate range When a level of an input signal is suddenly changed to a low level (or a high level), a driving p-channel MOS transistor of a weak driving performance (or a driving n-channel MOS transistor of a weak driving performance) is turned on to control an output-... | 08/27/2002 |
| 6442704 | Ring oscillator clock frequency measuring method, ring oscillator clock frequency measuring circuit, and microcomputer A ring oscillator clock frequency measuring circuit includes a reference clock count timer and a ring oscillator clock count timer. The reference clock count timer starts its counting of a reference clock signal in response to a start instruction fed from... | 08/27/2002 |
| 6437685 | Cordless power transmission system, power transmission terminal and electrical appliance A cordless power transmission system can transmit and receive power stably without malfunctions. A power transmission terminal transmits default power to an electrical appliance by diffractive electromagnetic waves. The electrical appliance transmits its ... | 08/20/2002 |
| 6400367 | Character display device and displaying method thereof A character display device includes a memory for storing on-screen display (OSD) character data and wallpaper (background) character data, and shift registers for outputting the corresponding one of those character data stored in the memory in accordance ... | 06/04/2002 |
| 6392497 | Phase-locked loop circuit with high lock speed and stability A phase-locked loop circuit includes a voltage-controlled oscillator that includes a series circuit having a P-channel transistor, N-channel transistor, a third resistor and a first resistor connected in series in this order; a second resistor connected i... | 05/21/2002 |
| 6388487 | Schmitt circuit By turning OFF a PMOS transistor 15a of a feedback inverter 15 as the signal level at an input node 6 gradually changes from the "L" to "H" level, a high-level output from the feedback inverter 15 to an intermediate node 7 is limited, or by tuning OFF an ... | 05/14/2002 |
| 6385274 | Watchdog timer for resetting microcomputer before runaway A watchdog timer includes an instruction decoder, a delay circuit and a counter. The instruction decoder decodes a watchdog timer initialization instruction regularly executed to generate an instruction pulse for initializing the count of the counter. The... | 05/07/2002 |
| 6373287 | Input/output control circuit and microcomputer An input/output control circuit includes an input/output terminal, a first and second transistors configuring a CMOS circuit, a third transistor for carrying out a pull-up operation, an input control gate, an output control gate, a direction register for ... | 04/16/2002 |
| 6370643 | Microcomputer reset device for positively resetting microcomputer before starting operation A microcomputer reset device includes a switching circuit for comparing, after a reset of a CPU is released during power-up, a reference voltage Vref with a second divided voltage Vd2 which is proportional to a supply voltage and is adjusted by the CPU, a... | 04/09/2002 |
| 6356145 | Demodulator circuit which demodulates a signal without any restriction from a clock signal A demodulator circuit including: a signal generating circuit for generating a sine-wave signal and a cosine-wave signal whose frequencies are same as that of the carrier wave of a modulated signal, a multiplying circuit for multiplying the modulated signa... | 03/12/2002 |
| 6343334 | Detector of an oscillation stopping and an apparatus for executing a treatment after the detection of an oscillation stopping A detector of an oscillation stopping, which detects the stopping of the oscillation of external clock 11, without increasing the load of CPU 45 in the micro computer 40, and generates a signal to reset the micro computer or exchanges the system clock fro... | 01/29/2002 |
| 6335641 | Automatic input threshold selector An automatic input threshold selector includes a maximum value level decision circuit, and an input threshold setting circuit. The maximum value level decision circuit decides, among m+1 level layers defined by m maximum value decision levels, a level lay... | 01/01/2002 |
| 6281934 | Data slicing device and data slicing method for extracting data from a signal A data slicing device includes an A/D converter for converting a video signal applied thereto into an equivalent digital signal, a sequential integrating circuit for averaging the amplitude of a dc component included in the digital signal obtained by the ... | 08/28/2001 |
| 6215328 | Buffer circuit with small delay A buffer circuit including a pair of complementary P-channel transistor and N-channel transistor connected in series, the connecting point of which is connected to an output terminal. The gate terminal of the P-channel transistor is connected to a power s... | 04/10/2001 |
| 6188258 | Clock generating circuitry Clock generating circuitry comprises a first frequency multiplier for multiplying the frequency of a reference clock applied thereto by 2n, where n is a natural integer, and for furnishing the frequency-multiplied clock, a frequency divider for dividing t... | 02/13/2001 |
