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| Number | Title | Issue Date |
| 6381318 | Internet telephone system, access point apparatus, and communication system using access point apparatus and broad-range data communication network In an Internet telephone system, even though a user need not enter a user ID and a password, this internet telephone system can judge as to whether or not a telephone user is an authorized telephone user. To achieve this function, an Internet access point... | 04/30/2002 |
| 6342402 | Light emitting diode array and method of forming the same A light emitting diode array includes a light emitting area formed on a semiconductor substrate, a diffusion prevention layer formed on the semiconductor substrate, and an insulating layer formed on the diffusion prevention layer. The diffusion prevention... | 01/29/2002 |
| 6342814 | Operational amplifier An operational amplifier includes: a differential input section for generating a first signal corresponding to a differential voltage between two input signals; an amplifying section for amplifying the first signal in voltage to generate second and third ... | 01/29/2002 |
| 6339588 | Method and system of CDMA communication In a method of CDMA communication, a page message notice signal is transmitted over a page message notice channel, which is different from paging channels. The page message notice signal indicates whether a monitor-required page message is included in an ... | 01/15/2002 |
| 6336040 | Mobile radio system with control over radio wave output if a malfunction is detected A mobile radio system includes a base station and a plurality of mobile radio apparatuses, with each mobile radio apparatus including a control CPU for controlling the mobile radio apparatus and monitoring the state of the hardware of the mobile radio app... | 01/01/2002 |
| 6333231 | Method for manufacturing semiconductor memory A method for manufacturing read-only memory. In each memory cell on a wafer, a gate electrode 3a is formed on a silicon substrate 1 with an intermediary of a gate oxide film 2, and an oxide film 4 is formed to cover the surface of the silicon substrate. A... | 12/25/2001 |
| 6320973 | Animal identification system based on irial granule analysis An animal identification system is provided which is designed to determine outlines of a pupil and irial granule in an input image of an eye of an animal to be identified, apply an arc to a lower portion of the outline of the pupil, turns back the arc fro... | 11/20/2001 |
| 6307954 | Eye image recognition method, eye image selection method and system therefor An input image that includes an eye is divided into a plurality of blocks, and a mosaic image in which each of the blocks has a density value is produced. Among all the blocks, one having a small distance from a center point of the mosaic image and having... | 10/23/2001 |
| 6301559 | Speech recognition method and speech recognition device To realize a speech recognition method and speech recognition device that reduce erroneous recognition for words that are not to be recognized and ambient sounds, and to improve the recognition capability, characteristic parameters of words to be recogniz... | 10/09/2001 |
| 6297690 | Booster circuit A booster circuit uses a source voltage to generate a boosted voltage that is higher than the source voltage. The booster circuit has two capacitors. The two capacitors are alternately charged and discharged in response to a signal voltage applied to an i... | 10/02/2001 |
| 6295349 | Exchange An exchange executes a reserved camp-on. For executing the camp-on, the exchange monitors idle/busy states of telephones for which the camp-on is reserved, as well as idle/busy states of corresponding channels. When it is judged that the foregoing telepho... | 09/25/2001 |
| 6285780 | Apparatus for identifying individual animals and image processing method An individual animal identification apparatus has an eye region image pick-up unit for obtaining an input image by taking a picture of an eye, including an iridial granule, of an animal to be registered and identified, a geometric normalizer for performin... | 09/04/2001 |
| 6284580 | Method for manufacturing a MOS transistor having multi-layered gate oxide In a pretreatment process, a silicon oxide film (13) with nitrogen content is formed on a semiconductor substrate (10). In a segregation process executing heat treatment in an inert gas atmosphere, a silicon nitride layer (14) segregates out at the interf... | 09/04/2001 |
| 6282677 | Interleaving apparatus An interleaving apparatus is provided which stores input bits temporarily and transfers some of the bits only required to execute an operation to code each of the stored bits to a coding circuit. This allows a storage region to be decreased as compared wi... | 08/28/2001 |
| 6267515 | Optical coupling module and manufacturing method of the same An optical coupling module suitable for use as an optical-communication terminal station, which facilitates alignment and helps to reduce production cost. The module comprises a semiconductor substrate 14 having a mirror-finished surface 14a and having mo... | 07/31/2001 |
| 6265807 | Spread spectrum communication apparatus, and demodulator, surface acoustic wave element and surface acoustic wave parts for spread spectrum communication A spread spectrum communication apparatus includes at least one surface acoustic wave matched filter, a plurality of surface acoustic wave delay lines having different delay amounts, and integrating circuits for integrating an output signal of the surface... | 07/24/2001 |
| 6259961 | Continuous processing conveying system and control method for the same When a treatment process and an inspection process are continuous, in order to transfer a lot therebetween more simply and more reliably, in a conveying system comprising a depository storing lots each of which is one group of the same species, there is p... | 07/10/2001 |
| 6236648 | CDMA receiver In a CDMA receiver, an A/D converter over-samples an analog reception baseband signal with a sampling clock a frequency of which is 2n times higher than a chip clock, and converts it into a digital reception baseband signal. A correlator obtain... | 05/22/2001 |
| 6233454 | Mobile station A mobile station is provided for autonomously detect an abrupt change of a propagation environment of a radio wave signal from a base station for servicing a peripheral cell and immediately executing a peripheral cell search. In order to execute a receive... | 05/15/2001 |
| 6233188 | Precharge control signal generating circuit A level shifter K1 receives a part of a precharge generation signal Sp, raises its level to a predetermined value, and transfers it to an NMOS transistor NT1. A capacitor Cp receives a part of the output of the level shifter K1, supplies it to a first ele... | 05/15/2001 |
| 6229905 | Animal identification based on irial granule analysis An animal identification system is provided which is designed to determine outlines of a pupil and irial granule in an input image of an eye of an animal to be identified, apply an arc to a lower portion of the outline of the pupil, turn back the arc from... | 05/08/2001 |
| 6229907 | Method and apparatus for identifying individual There is provided an individual identification system and a method thereof which are capable of identifying individuals having elliptical pupils and elliptical irises. In the individual identification system 10, the image storage unit 11 stores eye images... | 05/08/2001 |
| 6225853 | Booster circuit A booster circuit uses a source voltage to generate a boosted voltage that is higher than the source voltage. The booster circuit has two capacitors. The two capacitors are alternately charged and discharged in response to a signal applied to an input ter... | 05/01/2001 |
| 6226414 | Image encoding and decoding method and apparatus using edge synthesis and inverse wavelet transform A digitized image is encoded by detecting edges in the image, encoding the position and sharpness of the detected edges, filtering the image by a low-pass filter to generate a low-frequency image, and encoding the low-frequency image. A digitized image en... | 05/01/2001 |
| 6226319 | Spread spectrum demodulation circuit, spread spectrum communication apparatus, delay-detection-type demodulation circuit, and delay-detection-type communication apparatus A spread spectrum demodulation circuit includes a correlation signal generator which generates a correlation signal from a reception signal to which a quadrature phase shift keying and a spread spectrum modulation are performed. First and second delay ele... | 05/01/2001 |
| 6215891 | Eye image recognition method eye image selection method and system therefor An input image that includes an eye is divided into a plurality of blocks, and a mosaic image in which each of the blocks has a density value is produced. Among all the blocks, one having a small distance from a center point of the mosaic image and having... | 04/10/2001 |
| 6212495 | Coding method, coder, and decoder processing sample values repeatedly with different predicted values A differential pulse-code modulation coder obtains an improved signal-to-noise ratio, with only a small increase in bit rate, by repetitive coding. In one aspect, the coder divides the input signal into frames, codes each frame repeatedly using different ... | 04/03/2001 |
| 6208701 | Synchronizing apparatus The synchronizing apparatus includes a block for detecting a code from an input signal, a block for detecting from the code the variable points of the code at several times as high as the symbol rate, a block for calculating a histogram of the detected va... | 03/27/2001 |
| 6199191 | Viterbi decoding method and device thereof A Viterbi decoding method for decoding a received signal, doing an ACS process and a trace back process a first number of times, and doing the ACS process a second number of times and the trace back process the first number of times until the trace back p... | 03/06/2001 |
| 6195402 | Pattern matching apparatus In a multi-value modulation system such as M bits/1 symbol, a pattern matching apparatus is arranged by a coincident bit number detecting circuit for detecting a coincident bit number between a reception symbol and the known pattern owned by a receiver wi... | 02/27/2001 |
| 6185211 | ATM cell exchange To realize an ATM cell switch capable of reducing the transmission rate of cells to be transmitted, a output buffer-type ATM cell switch includes input units buffer unit, and output units, wherein the buffer units reduce the transmission rate of the cells... | 02/06/2001 |
| 6185526 | Speech transmission and reception system for digital communication A transmission device performs encoding by a speech encoding portion including a speech encoder and error correction encoder, and transmits a continuous signal without any further processing. A reception device receives the continuous signal and performs ... | 02/06/2001 |
| 6148341 | System for establishing multimedia communication interconnection between local unmanned automatic contract machines with a center terminal A method for establishing multimedia communication connection between a plurality of terminals 2 and one center terminal 1 in such a manner that the center terminal 1 has a plurality of relay resources 12, so that when an inquiry is made by any of the ter... | 11/14/2000 |
| 6144754 | Method and apparatus for identifying individuals An individual identification system and method for identifying individuals having elliptical pupils and elliptical irises. In the individual identification system, an image storage unit stores eye images, an the ellipse preparation unit prepares a plurali... | 11/07/2000 |
| 6137825 | Communication system, transmitter and receiver Differences between two adjacent bits of connection control data are derived in sequence. The derived differences are logically combined with a pilot signal and simultaneously with user data. The logically combined signals are spread to spreading bands an... | 10/24/2000 |
| 6136627 | High-resolution light-sensing and light-emitting diode array and fabrication method thereof A light-sensing/emitting diode array chip has impurity diffusion regions with a depth of at least 0.5 μm but not more than 2 μm in a semiconductor substrate. Each impurity diffusion region is preferably divided into a first region, used for emitting or ... | 10/24/2000 |
| 6125431 | Single-chip microcomputer using adjustable timing to fetch data from an external memory It is an object of the present invention to provide a one-chip microcomputer which permits the access time for an external memory to be equal to that for an internal memory. The one-chip microcomputer 10 includes an internal ROM 11, control circuit 12, ou... | 09/26/2000 |
| 6108441 | Color adjustment method for pixels of color images that designates color and corresponding adjustment colors In a method for color adjustment of a color image, a color adjustment software window is displayed and color image data on an RGB color space before color adjustment is displayed on a before-adjustment image window of a color monitor screen. An operator f... | 08/22/2000 |
| 6108803 | Memory cell circuit for executing specific tests on memory cells that have been designated by address data A memory circuit, provided with address signal generating arrangement that includes first counter 72 for outputting first output data Q1 sequentially designating address signals for memory cells under test in a memory 10, a second counter 74 for outputtin... | 08/22/2000 |
| 6101191 | Network connection circuit To cascade a network line concentrator and a plurality of terminals, the network connection circuit installed in each of the plurality of terminals forwards first data in a direction from the line concentrator to the neighboring terminal, provides the fir... | 08/08/2000 |
