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Class Information
Number: 455/15
Name: Telecommunications > Carrier wave repeater or relay system (i.e., retransmission of same information) > Two separate way transmission
Description: Subject matter where the relay or repeater operates in at least two directions.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6795685 |
Method and apparatus for repeater priority resolution in a wireless communication system |
Sep. 21, 2004 |
| 6778097 |
Remote radio operating system, and remote operating apparatus, mobile relay station and radio mobile working machine |
Aug. 17, 2004 |
| 6768897 |
Method of adjusting frequency of cellular radio repeater |
Jul. 27, 2004 |
| 6738597 |
Repeating installation using telephone line |
May. 18, 2004 |
| 6728541 |
Radio relay system |
Apr. 27, 2004 |
| 6690916 |
Radio network for radio communication in an enclosed environment and a repeater for such a radio network |
Feb. 10, 2004 |
| 6687487 |
Repeater for transmission system for controlling and determining the status of electrical devices from remote locations |
Feb. 3, 2004 |
| 6681122 |
System and method for selectively enabling transmit/receive modes of a radio transceiver |
Jan. 20, 2004 |
| 6647266 |
Channel card for extending coverage area of base station |
Nov. 11, 2003 |
| 6647244 |
Wireless vehicular repeater system |
Nov. 11, 2003 |
| 6615021 |
Method and apparatus for transmitting radio frequency signals to and from a pager |
Sep. 2, 2003 |
| 6598232 |
Hybrid amplifier-regenerator for optimizing cable network transmissions |
Jul. 22, 2003 |
| 6535717 |
Method, system and apparatus for transmitting, receiving, and reproducing a digital broadcast signal |
Mar. 18, 2003 |
| 6529486 |
Trunked radio repeater communication system |
Mar. 4, 2003 |
| 6507741 |
RF Repeater with delay to improve hard handoff performance |
Jan. 14, 2003 |
| 6477369 |
Broadband communication network |
Nov. 5, 2002 |
| 6424818 |
Communication system using relayed radio channels |
Jul. 23, 2002 |
| 6370377 |
Mobile radio communication system |
Apr. 9, 2002 |
| 6370384 |
Frequency re-use planning for wireless communications system using wireless translating repeaters |
Apr. 9, 2002 |
| 6351653 |
Cellular telephone with simultaneous radio and cellular communications |
Feb. 26, 2002 |
| 6317609 |
System and method for transporting digital speech and digital pictures |
Nov. 13, 2001 |
| 6285857 |
Multi-hop telecommunications system and method |
Sep. 4, 2001 |
| 6243577 |
Frequency translation to local multi-point distribution system for personal communications services |
Jun. 5, 2001 |
| 6236840 |
Transmission output detecting circuit |
May. 22, 2001 |
| 6188875 |
Wireless telephone server system |
Feb. 13, 2001 |
| 6128496 |
Cellular transceiver station with adjustable time lag |
Oct. 3, 2000 |
| 6111663 |
Apparatus and method for selective modem communications on shared, closed-loop communication systems |
Aug. 29, 2000 |
| 6091301 |
Flatness compensation of diplex filter roll-off using active amplifier peaking circuit |
Jul. 18, 2000 |
| 6052591 |
Broadcasting messages to mobile stations within a geographic area |
Apr. 18, 2000 |
| 5987060 |
System and method of radio communications with an up-down digital signal link |
Nov. 16, 1999 |
| 5974325 |
Cellular radio system using common radio backbone |
Oct. 26, 1999 |
| 5887261 |
Method and apparatus for a radio remote repeater in a digital cellular radio communication system |
Mar. 23, 1999 |
| 5883884 |
Wireless digital communication system having hierarchical wireless repeaters with autonomous hand-off |
Mar. 16, 1999 |
| 5850593 |
Mobile communication for a mobile station near or outside a service area of a base station |
Dec. 15, 1998 |
| 5832365 |
Communication system comprising an active-antenna repeater |
Nov. 3, 1998 |
| 5815799 |
Priority system for a wide area transmission trunked communication system |
Sep. 29, 1998 |
| 5781859 |
RF repeater arrangement with improved frequency reuse for wireless telephones |
Jul. 14, 1998 |
| 5768683 |
Method for automatic re-transmission of voice messages by a mobile communication unit |
Jun. 16, 1998 |
| 5689081 |
Network karaoke system of broadcast type having supplementary communication channel |
Nov. 18, 1997 |
| 5678176 |
Direct inward dial telephone number recognition in a land mobile radio system |
Oct. 14, 1997 |
| 5666646 |
Radio frequency (RF) converter system with distributed protection switching and method therefor |
Sep. 9, 1997 |
| 5659879 |
Method of covering shadow areas in a cellular mobile radio system and radio booster for implementing this method |
Aug. 19, 1997 |
| 5634190 |
Low earth orbit communication satellite gateway-to-gateway relay system |
May. 27, 1997 |
| 5613196 |
Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system |
Mar. 18, 1997 |
| 5603080 |
Radio coverage in closed environments |
Feb. 11, 1997 |
| 5596318 |
Method for operating a two-way messaging system to extend battery life |
Jan. 21, 1997 |
| 5548802 |
Method and apparatus for a remote network switch for a land mobile transmission trunked communication system |
Aug. 20, 1996 |
| 5537680 |
Cellular receiver range extender |
Jul. 16, 1996 |
| 5533027 |
Digital fixed radio access system providing local mobility |
Jul. 2, 1996 |
| 5530914 |
Method for determining when a radio leaves a radio talk group |
Jun. 25, 1996 |
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