[특허]Transmission of data over a radio frequency channel

[미국특허] Transmission of data over a radio frequency channel 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-001/38 H04M-001/00
출원번호	US-0888444 (1997-07-07)
발명자 / 주소	Bergins Lewis A. Onorato Michael Falk Jerry Carey Richard Kloc Dennis Greene Roy
출원인 / 주소	Microcom Systems, Inc.
대리인 / 주소	Lappin & Kusmer LLP
인용정보	피인용 횟수 : 44 인용 특허 : 14

초록 ▼

An improved system for the transmission of data over a cellular telephone channel is provided. The system is especially adapted to reduce the cost associated with cellular telephone calls by allowing data transmission only when the channel signal level is greater than a pre-defined value, so as maximize the probability that a transmission will be successful. In addition, the system provides for user transparent reconnection and reestablishment of a dropped link, allowing transmission to continue where dropped without the need to retransmit data already successfully received. As an additional benefit, the system provides a mechanism for call timing and billing so that an estimated bill may be generated based on connection time.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for selectively transmitting and receiving data over a communications channel to and from a remote site, the communications channel having a determinable level of data transmission quality, said apparatus comprising:data interface means for transferring data to and receiving data from a data source;modulation means for modulating said data received from said data source in accordance with a transmission format so as to produce outgoing modulated data to be transmitted to said remote site;demodulation means for demodulating incoming modulated data received from said remote site;transceiver means for transmitting said outgoing modulated data over said communications channel and for receiving said incoming modulated data from said communications channel;measuring means for measuring the level of data transmission quality of the communications channel irrespective of whether a connection has been established with the remote site;connecting means for establishing a connection across said communication channel with said remote site if said level of data transmission quality of the communications channel is above a first predefined threshold level;means for activating said measuring means so as to measure the level of data transmission quality of the communications channel at the end of each of successive time intervals after a connection has been established with the remote site so long as data is required to be transferred to said remote site and the connection with said remote said has not been terminated; andmeans for immediately terminating said connection with said remote site if the measured level of signal transmission quality of the communication channel at the end of any of the time intervals is below a second predefined threshold level.

이 특허에 인용된 특허 (14) 인용/피인용 타임라인 분석

Hanawa Tetsuya (Yokohama JPX), Apparatus for controlling calls in a mobile communication system.
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Otani Susumu (Tokyo JPX), CN ratio measurement circuit.
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O\Sullivan Harry M. (Red Oak TX), Cellular telephone data communication system and method.
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Renton Paul (Seattle WA), Cellular telephone usage monitoring system.
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Knuth Stephen B. (Mission Viejo) Yossifor Oded (Torrance) Core Kenneth R. (Cypress CA), Enviromental adaptive mechanism for channel utilization in cordless telephones.
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Kloc Dennis (Jamaica Plain MA) Carey Richard A. (Ashland MA), Method and apparatus for effecting efficient transmission of data.
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Hop David D. (Phoenix AZ), Method and apparatus for error-free digital data transmission during cellular telephone handoff, etc..
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Bane Ronald L. (Plantation) Van Tanh Q. (Plantation FL), Method and apparatus for establishing voice and tone signalling communication in a trunked system.
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Patsiokas Stelios J. (Plantation) Marko Paul D. (Ft. Lauderdale) Wadin Craig P. (Sunrise) Kovach Edward S. (Plantation) Alton Kenneth D. (Coral Springs FL), Method and apparatus for optimum channel assignment.
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Sgrignoli Gary J. (Mt. Prospect IL), Method and apparatus for protection of channel access in broadband cable communications systems.
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Benyacar Irving (Englishtown NJ) Courte Elizabeth V. (Fair Haven NJ) Friedes Albert (East Brunswick NJ) Howe Thomas P. (Whitehouse Station NJ) Kaufman David D. (Atlanta GA) Magura James R. (Basking R, Method and apparatus for the billing of value-added communication calls.
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O\Sullivan Harry M. (Red Oak TX), Portable hybrid communication system and methods.
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Marui Kuniyoshi (Saitama JPX) Hattori Kiyoshi (Tokyo JPX), Radio telephone apparatus.
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Childress Jeffrey S. (Lynchburg VA) Dissosway Marc A. (Forest VA) Cooper Gerald M. (Gretna VA) Hughes ; III Houston H. (Lynchburg VA), Trunked radio repeater system.
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이 특허를 인용한 특허 (44) 인용/피인용 타임라인 분석

Palm,Stephen, Activation of multiple XDSL modems with implicit channel probe.
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Palm, Stephen, Activation of multiple xDSL modems with implicit channel probe.
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Palm,Stephen, Activation of multiple xDSL modems with implicit channel probe.
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Palm, Stephen, Activation of multiple xDSL modems with power control measurement.
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Bharath, Jagannathan; Larson, David N., Apparatus for transmitting and receiving signals.
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Keum, Ji-Eun; Kim, Wuk; Oh, Jae-Kwon; Lee, Kyung-Tak; Jun, Hae-Young, Apparatus, method and system for device management of mobile communication terminal.
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Akira Iwamoto JP, Cellular telephone.
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Nagasawa,Kiyoshi; Kihara,Shiro, Communication control method.
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Muramatsu, Toshihiko, Communication device and communication method.
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Ackley H. Sprague, Data acquisition using telephone connection.
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Holloway, Jr., Edwards, Job site communications systems, methods, and computer program products.
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Kardach, James P.; Schiffer, Jeffrey L., Method and apparatus for providing a radio module for a computer system.
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Stephen S. Rappaport ; Yunsang Park, Method and apparatus to maintain connectivity for mobile terminals in wireless and cellular communications systems.
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Davenport,David M.; Laguer Diaz,Juan; Gray,Robert A., Method for data exchange with a mobile asset considering communication link quality.
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David M. Davenport ; Juan Lauger-Diaz ; Robert A. Gray, Method for data exchange with a mobile asset considering communication link quality.
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Moon, Jeong-Kyu, Method for dialing in a smart phone.
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Day,Mark Stuart, Methods and apparatus for monitoring a power source.
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Farrow, Daniel W.; Origer, David F.; McDonald, Daniel D.; Shah, Chirag N., Modem integrated into a radio receiver utilizing a communication port.
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I'Anson, Colin, Operating a communications infrastructure on a pre-payment basis.
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Lodge,Richard A.; Lie Chin Cheong,Patrick, Packet data traffic control for cellular wireless networks.
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Glover, Kenneth Matthew; Bohls, Doug; He, James, Persistent modem connection.
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Markowitz, Robert E.; O'Neil, Joseph T.; Rosen, Kenneth H.; Stuntebeck, Peter H., Proxy apparatus and method for streaming media information and for increasing the quality of stored media information.
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Markowitz, Robert Edward; O'Neil, Joseph Thomas; Rosen, Kenneth H.; Stuntebeck, Peter H., Proxy apparatus and method for streaming media information and for increasing the quality of stored media information.
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Markowitz, Robert; O'Neil, Joseph; Rosen, Kenneth; Stuntebeck, Peter, Proxy apparatus and method for streaming media information and for increasing the quality of stored media information.
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Markowitz, Robert; O'Neil, Joseph; Rosen, Kenneth; Stuntebeck, Peter, Proxy apparatus and method for streaming media information and for increasing the quality of stored media information.
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Markowitz,Robert Edward; O'Neil,Joseph Thomas; Rosen,Kenneth H.; Stantebeck,Peter H., Proxy apparatus and method for streaming media information and for increasing the quality of stored media information.
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Moulsley, Timothy J.; Hunt, Bernard, Radio communication system.
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Moulsley, Timothy J.; Hunt, Bernard, Radio communication system.
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Moulsley,Timothy J.; Hunt,Bernard, Radio communication system.
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Moulsley,Timothy J.; Hunt,Bernard, Radio communication system.
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Masahiro Katsuki JP, Radio portable information terminal and radio data transmitting receiving system.
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Palm, Stephen, Retransmission procedure and apparatus for handshaking protocol.
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Palm,Stephen, Retransmission procedure and apparatus for handshaking protocol.
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Saugnac, Frederic, System enabling communication between an aircraft-based computer network and a ground-based computer network.
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Jones, Edmund J.; Costello, Matthew W.; Schleiff, Martin; Miller, David S.; Chetal, Aradhna; Belden, Marion M.; Gallup, Volha V., Threat modeling and analysis.
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Bergins, Lewis A.; Onorato, Michael; Falk, Jerry; Carey, Richard; Kloc, Dennis; Greene, Roy, Transmission of data over a radio frequency channel.
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Koga Noriyuki,JPX ; Nakagawa Noboru,JPX, Transmitter and automobile audio apparatus using the same.
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A	생활필수품
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Transmission of data over a radio frequency channel 원문보기