Decoder/encoder capable of controlling data reading/writing operations to memory in response to first/second clocks, reproducing apparatus equipped with encoder/decoder, and recording apparatus equipped with encoder
The present invention has been made so as to solve the above-described problems, and therefore, has an object to a recording apparatus, a reproducing apparatus, an encoder circuit, and a decoder circu... Read More
Inventors: Arataki, Yuji; Min-Jae, Han;, Assignee: Sony Corporation (Tokyo, JP) |
Low distortion variable output power supply
OF THE INVENTION While this invention is susceptible of embodiment in many different forms, there is shown in the drawing and will be described herein in detail specific embodiments thereof with the ... Read More
Inventors: Reichard, Jeffrey A.;, Assignee: Metropolitan Pump Company (Romeoville, IL) |
High-density information recording/reproducing method
We claim: 1. A high-density information recording/reproducing method, comprising the steps of: irradiating a medium with a recording laser beam of 680 nm wavelength to form a recording spot on said me... Read More
Inventors: Maeda, Takeshi; Sugiyama, Hisataka; Awano, Hiroyuki; Miyamoto, Harukazu; Andoo, Keikichi; Wakabayashi, Kouichirou; Saito, Atsushi; Shimano, Takeshi; Ushiyama, Junko; Komoda, Osamu; Saga, Hideki;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Non-fully-decoded test address generator
FIG. 1 is a block schematic diagram of a fully decoded test address generator 10 according to the prior art for generating an address count which either increases to, or decreases from, a value of 2.... Read More
Inventors: Kim, Ilyoung;, Assignee: AT&T Corp. (Murray Hill, NJ) |
Optical disc and method for recording on optical disc
In view of the above-described status of the art, it is an object of the present invention to provide an optical disc in which the recording capacity per side may be increased easily without lowering ... Read More
Inventors: Yamasaki, Yoshimori;, Assignee: Sony Corporation (Tokyo, JP) |
Data recording and/or reproducing method and apparatus
It is the object of the present invention to solve the above-noted problem peculiar to the prior art and to provide a data recording and/or reproducing method and apparatus in which the switching of t... Read More
Inventors: Satomura, Seiichiro;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Usage parameter control apparatus for performing a plurality of conformance checking operations at high speed
It is an object of the present invention to provide policing circuit and policing method suitable for solving the above problems in the ATM communication network which conduct the policing. More parti... Read More
Inventors: Ogasawara, Nobuo; Endo, Noboru; Miki, Kazuho; Takase, Akihiko;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Method and apparatus for transmitting digital data
Accordingly, it is an object of the present invention to provide a method of transmitting data using existing digital audio equipment or a digital transmission line in which control for interleave pro... Read More
Inventors: Suzuki, Tadao; Sako, Yoichiro; Furukawa, Shunske; Furuya, Tsuneo; Baggen, Constant P. M. J.;, Assignee: Sony Corporation (Tokyo, JP) |
Method of and device for storing and reading digital information at option protected or not by an error correcting code
The present invention is based upon recognition of the fact that the above-described information storage system will find different fields of application. Some of these fields of application will nece... Read More
Inventors: Suzuki, Tadao; Van Luyt, Balthasar A. G.; Van Den Hoven, Lambertus M. C.;, Assignee: Sony Corporation (Tokyo, JP) |
Sample data transmission apparatus
In view of the above mentioned drawbacks of the prior art system, it is a principal object of the present invention to provide a sampled data transmission apparatus in which error correcting measures,... Read More
Inventors: Lagadec, Roger; Sekiguchi, Keisuke; Yamauchi, Hiroyuki; Tezuka, Masaru; Tobita, Satoru; Sako, Yoichiro; Hara, deceased, Hiroyuki;, Assignee: Sony Corporation (Tokyo, JP) |
Information recording/reproducing apparatus for converting and processing data exceeding error correction ability at recording
An object of the present invention is to provide an information recording/reproducing apparatus for providing protection of a data without requiring a special range for recording a secret code. Anothe... Read More
Inventors: Nakajima, Yoshio;, Assignee: Olympus Optical Co., Ltd. (Tokyo, JP) |
Recording and/or reproducing apparatus for recording and/or reproducing image data compressed according to different compressing methods
In order to attain the aforesaid objects, there is provided an image data recording and/or reproducing apparatus in which image data input as first image data is compressed by a first image compressin... Read More
Inventors: Ichige, Kenji; Arai, Takao; Oku, Masuo; Okamoto, Hiroo;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
High-speed viterbi decoder
The invention is made to solve the problems and an object of the invention is to provide a Viterbi decoder which can perform a high-speed decoding process. According to the invention, there is provide... Read More
Inventors: Hayashi, Hideki;, Assignee: Pioneer Electronic Corporation (Tokyo, JP) |
Gas-laser arrangement
What I claim is: 1. A gas-laser arrangement, with a gaseous medium being optically pumped, unimpeded by physical walls and using an arc or spark discharge, said arrangement comprising: a pumplight sou... Read More
Inventors: Mentel, Jurgen;, Assignee: |
Rear view mirror assembly for motor vehicle
According to the invention in one aspect, a rear view mirror assembly for a motor vehicle comprises a reflective member mounted on a pivot mounting for angular movement within a mirror case and a driv... Read More
Inventors: Gilbert, Robert W.; Fimeri, Garry G. L.;, Assignee: Britax Rainsfords Pty. Limited (AU) |
Error recovery procedure using selective erasure
FIG. 1 shows three adjacent tracks wherein the centerline of tract T2 is properly aligned, while the adjoining tracks, T1 and T3 are subject to track misregistration (TMR) causing each to overlap and... Read More
Inventors: Cunningham, Earl A.; Palmer, Dean C.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Method and apparatus for compensating for bit line delays in semiconductor memories
The method and apparatus of the present invention creates a faster semiconductor memory by reducing the time delay between when the bit lines are ready for sensing and when they are actually sensed by... Read More
Inventors: Zampaglione, Michael A.; Phuong, Hai Van;, Assignee: VLSI Technology, Inc. (San Jose, CA) |
Improved magneto-optical recording apparatus for digital signal information
Accordingly, an object of the present invention is to overcome the foregoing problems. In the conventional PR (1, 1) method, equalizer 24 shown in FIG. 2 has been designed to satisfy H(f).multidot.E (... Read More
Inventors: Kobayashi, Michio; Hirayama, Hiroshi; Nebashi, Satoshi;, Assignee: Seiko Epson Corporation (Tokyo, JP) |
Tracking control apparatus for generating sawtooth tracking control signal from sinusoidal tracking error signal
It is an object of the present invention to provide a tracking control apparatus which attains stable pull-in to a target track even if waveform amplitudes of a tracking error signal and a tracking su... Read More
Inventors: Suzuki, Motoyuki; Suzuki, Yoshio; Fukui, Yukio;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Optical information recording medium on which a visible display having a stereoscopically view effect and a depth viewing effect can be made
In a single-substrate type optical disc such as a CD, CD-ROM or the like as described above, information such as a title, a manufacturer and so on which are connected with the recording information is... Read More
Inventors: Nakano, Kazuhiko;, Assignee: Nippon Columbia, Ltd. (Tokyo, JP) |
Network system having a line switching function
Referring now to the drawings, description will be given of embodiments according to the present invention. FIG. 1 is a block diagram of a network as an embodiment according to the present invention.... Read More
Inventors: Satomi, Shigeki; Ono, Naoki;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Scheduler utilizing dynamic schedule table
The present invention relates to a dynamic schedule table for use with a scheduler coupled to a communication system. The scheduler accesses the dynamic schedule table to schedule transmission of data... Read More
Inventors: Lincoln, Bradford C.;, Assignee: Rockwell Science Center (Newport Beach, CA) |
Data transmission control system for performing one-to-multiple site data transmission by the use of radio packet communication
In order to solve the above conventional problems, it is an object of the present invention to provide a transmission control system capable of resending a packet signal without giving the excessive l... Read More
Inventors: Taketsugu, Masanori;, Assignee: NEC Corporation (JP) |
Multiplexer-analog/digital conversion system
As seen in FIG. 1, the preferred embodiment of the system includes an insulated termination box generally indicated at 11 and an electronics box generally indicated at 12 that is located adjacent box... Read More
Inventors: Herring, William M.; Walling, Dennis B.;, Assignee: Standard Oil Company (Chicago, IL) |
Power interrupter device for an electrical distribution system
What is claimed is: 1. A power interrupter device for an electrical distribution system comprising a normally opened power contactor in a power line in the device and having a relay, start means conne... Read More
Inventors: Smith, David W.; Logrando, John C.;, Assignee: Value Engineering Company (Alexandria, VA) |
Test apparatus for optical waveguides
What is claimed is: 1. Apparatus for determining attenuation and the presence of faults in an optical fiber wave guide, including in combination a support holding a portion of the length of the wave g... Read More
Inventors: Huang, Yung-Yien; Olszewski, Jerzy A.; Sarkar, Arnab;, Assignee: General Cable Corporation (Greenwich, CT) |
Optical fiber transfer function measuring system
What we claim is: 1. A transfer function measuring system for measuring the transfer function of an optical fiber, said system comprising: means for producing a first electrical composite signal havin... Read More
Inventors: Pophillat, Lucien J. P.; Moalic, Jean J.; Sorel, Yvon J.;, Assignee: |
Pulse coded optical attenuation meter
In accordance with this invention, generally stated, a system for testing an electromagnetic wave transmitting medium is provided which includes a transmitter for transmitting a test signal through th... Read More
Inventors: Higginbotham, John W.; Dowden, Dennis C.;, Assignee: McDonnell Douglas Corporation (St. Louis County, MO) |
Method of measuring the dispersion of a transmitting optical fibre
I claim: 1. In an optical data transmission system having two terminals wherein a transmitter in a first terminal is connected by an optical fibre to a receiver of a second terminal and a transmitter ... Read More
Inventors: Hellstrom, Bengt;, Assignee: Telefonaktiebolaget LM Ericsson (Stockholm, SE) |
Optical signal power measurement method and apparatus
The present invention relates generally to an apparatus and method for measuring power and power losses of light transmissions in fiber optic cables, and more specifically, the power and power losses ... Read More
Inventors: Maslaney, Michael J.; Andreasen, Dinal S.; Brown, Clifford D.;, Assignee: General Signal Corporation (Stamford, CT) |
Fault Detection 
