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Title: US5555015: Wireless two way transmission between center and user stations via a relay
[ Derwent Title ]


Country: US United States of America

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15 pages

 
Inventor: Aguayo, Jr., Erwin; Columbia, MD
Crowley, Steven J.; Washington, DC

Assignee: Intrinzix Technologies, Inc., Gaithersburg, MD
other patents from INTRINZIX TECHNOLOGIES, INC. (723873) (approx. 3)
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Published / Filed: 1996-09-10 / 1995-03-20

Application Number: US1995000406529

IPC Code: Advanced: H04N 7/173;
Core: more...
IPC-7: H04N 7/173;

ECLA Code: H04N7/173B; H04N7/173B2;

U.S. Class: Current: 725/123; 348/E07.07; 348/E07.071; 725/107; 725/127;
Original: 348/006; 348/012; 455/003.1; 455/005.1;

Field of Search: 348/006,12,13,7 455/3.1,3.2,4.2,5.1,6.1,14,67.3 <35886

Priority Number:
1995-03-20  US1995000406529

Abstract: The present invention is directed to a communication system which can be utilized to complement an existing cable television system in which a central office transmits signals along a coaxial cable to a user unit through a tap. The communication system features a central transmitting/receiving unit for wirelessly transmitting first signals generated at the central office and for receiving second signals. A first response unit which may be connected to the tap will receive the first signals wirelessly transmitted from the central transmitting/receiving unit, and will generate and wirelessly transmit the second signals to be received by the central transmitting/receiving unit. A further second response unit may be connected to the user unit, and the second response unit may generate a third signal to be wirelessly received by the first response. The third signal may be used to control the tap connected to the first response unit. Further, a relay unit may be provided to facilitate transmission between the first and second response units in the central transmitting/receiving unit.

Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier, & Neustadt, P.C. ;

Primary / Asst. Examiners: Metjahic, Safet; Grant, Chris

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First Claim:
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What is claimed as new and desired to be secured by Letters Patent of the United States is:     1. A communication system for a cable television system in which a central location transmits signals along a coaxial cable to a user unit through a tap, comprising:
  • a central transmitting/receiving unit for wirelessly transmitting a first signal generated at the central location and for receiving a second signal;
  • a first response unit for receiving the first signal wirelessly transmitted from the central transmitting/receiving unit and for generating and wirelessly transmitting the second signal to be received by the central transmitting/receiving unit;
  • a second response unit connected to the tap, and wherein the second response unit generates a third signal;
  • wherein the first response unit is connected to the tap and received the third signal, and wherein the third signal comprises command signals to control an operation of the tap connected to the first response unit, and the second signal includes an indication of the command signals of the third signal.


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Forward References: Show 15 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (15)   |   Backward references (77)   |   Citation Link

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Foreign References:
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Publication Date IPC Code Assignee   Title
  JP60112384 1985-06       
Buy PDF- 102pp WO9115062 1991-10  H04B 1/06 SCIENTIFIC-ATLANTA, INC. CABLE TELEVISION RADIO FREQUENCY DATA PROCESSOR 
Buy PDF- 99pp WO9217010 1992-10  H04H 1/00 SCIENTIFIC ATLANTA AUTOMATIC FREQUENCY SELECTION IN A BI-DIRECTIONAL CABLE TELEVISION SYSTEM 


Other Abstract Info: DERABS G96-424817 DERG96-424817 DERABS G97-502519

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