Receiving apparatus, and display apparatus and television broadcasting system therewith
AssigneePanasonic Corporation
InventorFumiaki Koga
Life of this patent
Estimating the term…
Abstract
During sleep mode, a power-source control section stops the power supply to a tuner, a demodulation section, an AV-data processing section and a microcomputer, and delivers a power supply only to a standby tuner. The standby tuner receives a start signal which is transmitted from a head end, using a frequency except a specific frequency which is received by the tuner, and outputs a power-supply instruction signal according to the start signal. The power-source control section executes a power supply to the tuner, the demodulation section, the AV-data processing section and the microcomputer, in response to the power-supply instruction signal.
Claims16
A receiving apparatus for use with a broadcasting-station apparatus, said receiving apparatus comprising:
- a first receiving section for receiving a signal transmitted from the broadcasting-station apparatus, the signal having a broadcast carrier frequency;
- a power-supply controlling section for controlling a power supply to said first receiving section;
- and
- a second receiving section for receiving an operation signal transmitted from the broadcasting-station apparatus, the operation signal including a plurality of carrier signals having different frequencies within a frequency band, the plurality of carrier signals included in the operation signal having frequencies different from the broadcast carrier frequency,
- wherein said second receiving section outputs a power-supply control signal to said power-supply controlling section according to the plurality of carrier signals included in the operation signal, and
- wherein said power-supply controlling section supplies power to said first receiving section according to said power-supply control signal.
A receiving apparatus for use with a broadcasting-station apparatus, said receiving apparatus comprising:
- a first receiving section for receiving a signal with a specific frequency which is transmitted from the broadcasting-station apparatus;
- a power-supply controlling section for controlling a power supply to said first receiving section;
- and
- a second receiving section for receiving an operation signal which is transmitted from the broadcasting-station apparatus using a frequency other than the specific frequency,
- wherein said second receiving section outputs a power-supply control signal to said power-supply controlling section according to the operation signal,
- wherein said power-supply controlling section controls a power supply to said first receiving section according to said power-supply control signal,
- wherein said second receiving section is configured to receive a stop signal transmitted from the broadcasting-station apparatus as the operation signal if power is being supplied by said power-supply controlling section, and for outputting a power-supply stop signal according to the stop signal as said power-supply control signal, and
- wherein said power-supply controlling section stops the power supply to said first receiving section according to said power-supply stop signal.
Dependencies are inferred from the claim text.