Title:
マルチプルRF信号スイッチング装置
Document Type and Number:
Japanese Patent JP4387194
Kind Code:
B2
Abstract:
An RF multiple switching apparatus, such as one included in or coupled to a broadcast satellite signal receiver, having a plurality of multiple RF signal input ports for receiving respective ones of a plurality of RF signals, such as broadcast satellite television signals, utilizes a relative signal strength indicator, such as an automatic gain control signal, to determine the difference between the actual input signal that is present at one of the plurality of signal input ports and a false signal that appears to be present at another signal input port of the plurality of signal input ports due to the RF signal bleeding between the multiple signal input ports. During a setup configuration determination or routine, the switching apparatus steps through each RF signal input, extracts pertinent transmission network (such as a satellite transmission network) information, determines a relative signal strength indicator for the RF signal, and compares the obtained information. Setup data for each RF signal input is stored according to the comparison.
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Inventors:
Bygrovic, Bryan, David
Curtis, The Third, John, Joseph
Curtis, The Third, John, Joseph
Application Number:
JP2003557122A
Publication Date:
December 16, 2009
Filing Date:
December 16, 2002
Export Citation:
Assignee:
Thomson Licensing
International Classes:
H04B1/18; H04N5/00; H04H40/90; H04N7/10; H04N7/20
Domestic Patent References:
| JP8065110A | ||||
| JP9162704A | ||||
| JP58050842A |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito