Method of optical fiber communication
It is an object of the present invention to provide an optical fiber communication apparatus that provides an output optical signal waveform having the same waveform as the input optical signal wavefo... Read More
Inventors: Kodera, Motoyuki; Minamihara, Seiji;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP) |
Computer mouse
The present invention utilizes the advantages of both the two button computer mouse and the three button computer mouse while eliminating their disadvantages. In particular, the present invention prov... Read More
Inventors: Cheng, San-Yih;, Assignee: |
Combination mouse and track ball unit
By the present invention, a combined mouse and track ball are contained within an ergonomically designed housing or shell. The shell is curved to fit comfortably within the palm of the hand of an oper... Read More
Inventors: Grant, Alan H.;, Assignee: |
Amendable static random access memory
Based on such circumstances, the object of the present invention is to provide an amendable static RAM, which can replace the damaged memory column of the original chip with some preserved memory colu... Read More
Inventors: Chang, Hsiao-Yueh; Lin, Lein-Hsing;, Assignee: United Microelectronics Corporation (Hsinchu, TW) |
Digital signal transmission system having conversion means for reducing the light emission time of a light emitting diode
An object of the invention is to realize the transmission with the better value of the S/N ratio by lessening the emission time of the light emission diode so as to increase the peak value of the ligh... Read More
Inventors: Nakamura, Masafumi; Takeuchi, Tosifumi; Nagai, Yutaka;, Assignee: Hitachi, Ltd. (Tokyo, JP) |
Multiprotocol directed infrared communication controller
The present invention embodies a new architecture for a communications controller and preferably a wireless communication controller for use with infrared (IR) signals that resolves the prior art prob... Read More
Inventors: Balasubramanian, Peruvemba S.; Lee, Nathan J.; Lekuch, Scott D.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Mouse housing structure
Therefore, a major object of the present invention is to provide a mouse housing structure which allows the angle of a held portion thereof to be changed with the holding manner of a user. The present... Read More
Inventors: Wu, Arthur;, Assignee: Primax Electronics Ltd. (Taipei Hsien, TW) |
Admission control system and method in space-based mobile telecommunication system
What is claimed is: 1. A call admission control method of admitting or denying a connection request in a network of nodes, comprising the steps of: a) receiving the connection request, including a cal... Read More
Inventors: Natarajan, Kadathur S.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Method and apparatus for message delivery in a communication system having orbiting transmitters
What is claimed is: 1. A method of delivering a message from a caller to a subscriber in a communication system, wherein said caller was unable to communicate with said subscriber during a first confi... Read More
Inventors: Tayloe, Daniel Richard;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Optical communication process
In consideration of the foregoing, an object of the present invention is to provide an optical communication process which is not associated with the aforementioned drawback and is capable of secure d... Read More
Inventors: Nakata, Shinichi;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Character snychronization
We claim: 1. A system for selecting the character boundary of a serial code comprising: means responsive to transmitted serial code for coupling a character number of bits to a utilization means, said... Read More
Inventors: Miracle, Gerald H.; Neuner, Richard A.; Wilson, Lee H.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Sampling frequency converter by linear interpolation
In view of the above noted drawbacks of the prior art, an object of the invention is to provide a data conversion apparatus featuring reduced computation volume, simplified circuit construction and fa... Read More
Inventors: Sogo, Akira;, Assignee: Yamaha Corporation (Hamamatsu, JP) |
Image processing apparatus
It is an object of the present invention to provide an image processing apparatus which can 0 discriminate and process images with a small capacity of memory. It is another object of the present inven... Read More
Inventors: Yokomizo, Yoshikazu;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Private branch exchange capable of analyzing information received from ISDN
It is an object of the invention to improve a private branch exchange which can cope with services of the ISDN. Another object of the invention is to provide a private branch exchange which calls an e... Read More
Inventors: Sakurai, Shigeki; Takashima, Shoichi;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Single-channel communication bus system and station for use in such a communication bus system
What is claimed is: 1. A single-channel communication bus system whereto a series of stations are connected, that is to say at least one master station and at least one slave station, each master stat... Read More
Inventors: van Steenbrugge, Bernard; de Leeuw, Henricus F. A.;, Assignee: U.S. Philips Corporation (New York, NY) |
Communication bus system with lock/unlock capability
We claim: 1. A multi-station communication bus system having at least two master stations and at least one slave station, any master station comprising arbitration means per frame for transmitting an ... Read More
Inventors: van Steenbrugge, Bernard; de Leeuw, Henricus F. A.;, Assignee: U.S. Philips Corporation (New York, NY) |
Data-extraction circuitry for PCM communication system
We claim: 1. In a pulse-code-modulation communication system wherein a plurality of lines carry respective frames each composed of a multiplicity of multibit channels assigned to different time slots ... Read More
Inventors: Belforte, Piero; Bortignon, Renzo;, Assignee: CSELT-Centro Studi e Laboratori Telecommunicazioni S.p.A. (Turin, IT) |
Fire hose nozzle coupler switch
OF A PREFERRED EMBODIMENT While this invention is susceptible of embodiment in many different forms, there is shown in the drawings and will hereinafter be described in detail a preferred embodiment ... Read More
Inventors: Bernstein, Joel L.; Kovach, Paul E.;, Assignee: Grumman Aerospace Corporation (Bethpage, NY) |
Heat recoverable article and methods using same
The present invention overcomes many of the disadvantages associated with prior art techniques used to form a seal between one or more substrates and an opening through which the substrates extend. It... Read More
Inventors: Lofdahl, Clyde A.;, Assignee: Raychem Corporation (Menlo Park, CA) |
Method and apparatus for cancelling noise in a received signal by signal subtraction
An object of the present invention is to provide a method of canceling noise in a communication system and a device therefor, which can reliably and easily remove various noises including those whose ... Read More
Inventors: Mine, Katsutoshi; Morimoto, Yuji; Ogawa, Koji; Wakabayashi, Katsuyoshi; Katsuta, Hiroshi;, Assignee: |
Wireless communication zone management system
OF THE INVENTION Referring to FIG. 1, a plan view of a grid of leaky coaxial cables is shown. A first group of spaced parallel cables 1A, 1B, 1C, 1D, 1E, etc. are terminated at one end by impedance m... Read More
Inventors: Handforth, Martin R.;, Assignee: Mitel Corporation (Kanata, CA) |
Method and apparatus for four-wire type transmission of digital message signals
What is claimed is: 1. A method for the two-wire transmission of digital message signals on a two-wire transmission line between a superordinate system, such as a digital exchange, and a subordinate s... Read More
Inventors: Hirschmann, Peter;, Assignee: Siemens Aktiengesellschaft (Berlin and Munich, DE) |
Method and apparatus for a PSK signal detector
It is an object of the present invention to provide an improved method and apparatus for detecting the presence of a PSK data signal. It is another object of the present invention to provide an improv... Read More
Inventors: Chmura, Stanley J.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Voice frequency communication apparatus
It is an object of the present invention to provide a voice frequency communication apparatus which reliably realizes not only the communication as a telephone set but also high speed data communicati... Read More
Inventors: Fujiwara, Genichi;, Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP) |
Transistor balanced mixer
An object of this invention is to provide a transistor mixer circuit which has good linearity characteristics and a low noise characteristic and is suitable for semiconductor integrated circuits. Anot... Read More
Inventors: Tanabe, Kenzo; Suzuki, Junji;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Double-balanced mixer circuit
The invention has been conceived to solve the problems described above, and has a major object of providing a double-balanced mixer circuit which consumes a small amount of power and is capable of usi... Read More
Inventors: Uda, Hisanori; Sawai, Tetsuro; Imaoka, Toshikazu; Hirai, Toshikazu; Harada, Yasoo;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Front-end circuit
According to one aspect of the present invention, a front-end circuit which receives a first input signal and a second input signal, and outputs an output signal having a differential frequency betwee... Read More
Inventors: Nakatsuka, Tadayoshi; Itoh, Jyunji;, Assignee: Matsushita Electric Industrial Co., Ltd. (Kadoma, JP) |
Radio receivers
An object of the present invention is to be able to adjust the gain of an rf amplifier in a radio receiver operating at a low voltage whilst ensuring that an interfering signal is suppressed by at lea... Read More
Inventors: Holtvoeth, Knud;, Assignee: U.S. Philips Corporation (New York, NY) |
Communications receivers
It is an object of the present invention to improve the second-order inter-modulation performance of a communications receiver. According to one aspect of the present invention there is provided a com... Read More
Inventors: Moore, Paul A.;, Assignee: U.S. Philips Corporation (New York, NY) |
System for using a microphone in an object at a sporting event
The present invention is directed to overcome the disadvantages of the prior art. Thus, the present invention provides for a system for using a microphone in an object at a sporting event. The system,... Read More
Inventors: Hill, David Blyth; Gepner, Jerry Neil;, Assignee: Fox Sports Productions, Inc. (Los Angeles, CA) |
Cell Phones 
