Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Reexamination Certificate
2008-04-29
2008-04-29
Tran, Tuan A. (Department: 2618)
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
C455S012100, C455S427000, C455S428000, C455S429000, C455S430000, C455S003010, C455S003020, C455S013300, C455S013400, C455S025000, C342S352000, C342S353000, C342S354000, C370S315000, C370S316000
Reexamination Certificate
active
09565785
ABSTRACT:
A radio signal relay device such as satellite is used to cover several relatively small geographical regions with relatively narrow beams as well as a relatively large geographical region with a single beam. This relatively wide beam permits legacy equipment to be used. A transmitting device in a beam transmits a signal to the relay device, which in turn retransmits the signal to a receiving device. The transmitting devices, relay device, and receiving devices synchronize communication by using a particular mode of communication which includes a band of carrier frequencies and a protocol. In addition to communicating like mode signals from a transmitter to a receiver, the relay device may be used in a dual mode communication system to translate signals from the one mode to another. A translator may direct a transmitter to modulate a signal on a different carrier frequency, convert one protocol into another protocol, or both.
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Archer Stephen F.
Johnson Richard H.
The DIRECTV Group Inc.
Tran Tuan A.
LandOfFree
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