Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate
2011-02-01
2011-02-01
Urban, Edward (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
C455S067130, C455S067140, C455S114200, C455S115100, C455S127100, C455S127500, C455S343200, C375S224000, C375S227000, C375S231000, C375S346000, C370S317000, C370S318000
Reexamination Certificate
active
07881672
ABSTRACT:
A digital demodulating apparatus comprises a tuner constituted by circuit elements to perform channel select processing to a signal; a demodulator that performs demodulation processing to a signal output from the tuner; a power supply unit that supplies a normal power to each circuit element, and supplies to the circuit element a test power different from the normal power, over a first time period in place of the normal power; a test noise measuring unit that measures the intensity of test noise contained in a signal to be output from the tuner, when the power supply unit supplies the test power over the first time period; a comparing unit that compares the intensity of the test noise measured by the test noise measuring unit with a noise reference value as a reference for updating of the normal power; and a power updating unit that updates the intensity of the normal power on the basis of a result of the comparison by the comparing unit.
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Kaiki Nobuyoshi
Kioi Kazumasa
Natsumi Masayuki
Sakai Takae
Birch & Stewart Kolasch & Birch, LLP
Chen Junpeng
Sharp Kabushiki Kaisha
Urban Edward
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