[특허]Infra-red data communications system for coupling a battery powered data entry device to a microcomputer

[미국특허] Infra-red data communications system for coupling a battery powered data entry device to a microcomputer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-009/00
출원번호	US-0702282 (1985-02-15)
발명자 / 주소	Beavers John A. (Boca Raton FL)
출원인 / 주소	International Business Machines Corporation (Armonk NY 02)
인용정보	피인용 횟수 : 36 인용 특허 : 3

초록 ▼

A battery powered keyboard entry device includes an infra-red generator for coupling the device to a microcomputer which includes an infra-red receiver. Each input binary signal is transmitted as a few (e.g. two or three) short infra-red pulses indicating the leading edge of the binary signal. In the receiver, the received groups of pulses, after detection and amplification, are stretched by a single-shot circuit to produce binary signals of substantially the same length as the original binary signals. As each transmission is substantially shorter than each binary signal, power consumption in the keyboard entry device is substantially reduced as compared with a system in which the infra-red pulses for each input signal extend over the input signal length.

대표청구항 ▼

An infra-red data communications system for coupling a battery powered keyboard data entry device to a microcomputer, in which said keyboard data entry device comprises means, including a microprocessor, for developing, in response to each keystroke, a binary data signal stream representing a start bit followed by a predetermined fixed number of data bits, each binary data signal comprising a predetermined signal level for a fixed period, and for driving an infra-red generator to develop, from each binary data signal, a single burst of infra-red pulses, of which the first pulse corresponds to the leading edge of the binary data signal, said burst extending for a period substantially less than half of the period of the binary data signal, and in which the microcomputer includes means for detecting and amplifying said bursts of infra-red pulses, and signal generating means coupled to the output of the detecting and amplifying means and responsive to detection of an initial pulse in a received burst comprising, when propagation loss is encountered, at least one but less than all of the developed burst of pulses, to generate an output binary code signal comprising a predetermined signal level for said fixed period and having a leading edge corresponding to said initial pulse, said microcomputer further including a microprocessor responsive to the lagging edge of the output signal representing the start bit to generate a series of sampling pulses to sample the output signals representing the data bits.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

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Skerlos Peter C. (Arlington Hts. IL) Zato Thomas J. (Palatine IL), IR Remote control detector/decoder.
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Hayes ; Jr. John J. (Chesapeake VA), Technique for increasing battery life in remote control transmitters.
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이 특허를 인용한 특허 (36) 인용/피인용 타임라인 분석

Brusky, Kevin J.; Ellis, William H.; Sturgeon, Derrill L.; Brusky, Kerry L., Apparatus and method for using keyboard macros to control viewing channel.
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Brusky Kevin J. ; Sturgeon Derrill L., Auto run apparatus, and associated method, for a convergent device.
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Vaughan Mark P. ; Sturgeon Derrill L. ; Howard Christopher A. ; Brusky Kevin J., Automatic and seamless cursor and pointer integration.
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Mark P. Vaughan ; Thomas J. Brase ; Drew S. Johnson ; William H. Ellis, Computer convergence device controller for managing disparate video sources.
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Vaughan Mark P. ; Brase Thomas J. ; Johnson Drew S. ; Ellis William H., Computer convergence device controller for managing disparate video sources.
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Abrahamson Hans (Stockholm SEX), Device for optically transmitting and receiving binary information.
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Christopher D. Voltz, Hardware system for genlocking.
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Williamson Richard A. (Danville CA) Knight Jon M. (Pleasanton CA) Biros Roger W. (San Jose CA), High speed infrared communications system using pulse sets.
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Williams Jerry (4087 Norton Ave. Oakland CA 94602), Infrared communication apparatus for remote site applications.
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Philippe Patrick (Jambville FRX), Infrared transmitter of coded message having fixed code and large number of combinations.
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Stautner John P. ; Lawson Richard J. ; Belmont Brian V., Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation.
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Stautner, John P.; Lawson, Richard J.; Belmont, Brian V., Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation.
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Stautner, John P.; Lawson, Richard J.; Belmont, Brian V., Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation.
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Stautner, John P.; Lawson, Richard J.; Belmont, Brian V., Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation.
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Stautner, John P.; Lawson, Richard J.; Belmont, Brian V., Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation.
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Stautner, John P.; Lawson, Richard J.; Belmont, Brian V., Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation.
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Stautner,John P.; Lawson,Richard J.; Belmont,Brian V., Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation.
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Branc Joseph R. ; Forslund ; III Carl V. ; Miller William L. ; Stanfield Joel D., Integrated optical ports.
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Amro, Hatim Yousef; Dodson, John Paul, Interoperable/heterogeneous environment keyboard.
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Vaughan Mark P., Method and apparatus for controlling a display monitor in a PC/TV convergence system.
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Vaughan Mark P., Method and apparatus for controlling a display monitor in a PC/TV convergence system.
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Steffes Christopher Carl ; Tonizzo Anthony ; Vallillee ; IV George William, Method and apparatus for establishing a data link between a portable data communications device and an interface circuit.
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Sturgeon Derrill L. ; Vaughan Mark P., Method and apparatus to prevent top-most windows from interfering with TV mode in a PC/TV.
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Sturgeon Derrill L. ; Vaughan Mark P., Method and apparatus to prevent top-most windows from interfering with TV mode in a PC/TV.
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Williamson Ralph K. ; Crisler Curtis L., Method for improving IR transmissions from a PC keyboard.
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Lochner, Scott; Bartur, Meir, Modular computer system.
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Lochner,Scott; Bartur,Meir, Modular computer system.
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Jeffrey Alan Schanhals ; Christopher Carl Steffes ; Anthony Tonizzo ; George William Vallillee, IV, Multimedia data communications system.
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Murata Shinsuke (Iwate JPX), Portable label printing applicator apparatus.
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Brusky Kevin J., Power management schemes for apparatus with converged functionalities.
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Greanias Evon C. (Chevy Chase MD) Donaldson Robert L. (Annapolis MD), Remotely sensed personal stylus.
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Zimmerman,Thomas G., System and method for remote optical digital networking of computing devices.
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Stephen Michael Cole ; Jeffrey Alan Schanhals ; George William Vallillee, IV, System and method for supporting a worker in a distributed work environment.
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Frederick John W., System for multi-modal display functionality responsive to a convergence functionality module to select between computer functionality mode and non-computer functionality mode.
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Saliba George A., Wireless secondary interface for data storage device.
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Jen, Hsing C.; Slater, James S., Wireless transfer of data from a detector.
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[미국특허] Infra-red data communications system for coupling a battery powered data entry device to a microcomputer 원문보기

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[미국특허] Infra-red data communications system for coupling a battery powered data entry device to a microcomputer 원문보기

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이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (36) 인용/피인용 타임라인 분석

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