Receiving apparatus and receiving method

• US 20040080675A1
• Filed: 10/22/2003
• Published: 04/29/2004
• Est. Priority Date: 10/24/2002
• Status: Active Grant

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Hoshino, Hironobu
• Granted Patent: US 7,236,213 B2
• Time in Patent Office: Days
• US Class Current: 348/731
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A receiving apparatus that is capable of effectively reducing power consumption in the receiving state.

The receiving apparatus is provided with: an RF tuner 1, digital-demodulation unit 2, error-correction unit 3, demultiplexing unit 4 and decoding unit 5. A control unit 6 determines whether or not processing of the signal by the RF tuner 1, digital-demodulation unit 2, error-correction unit 3, demultiplexing unit 4 or decoding unit 5 is possible, and when it determines that signal processing is not possible, it controls switches SW1 to SW10 such that operation in the corresponding part and after the corresponding part stops.

Claims

1. A receiving apparatus for receiving a broadcast transmission comprising:

a signal-processing unit for processing the received signal;

a judgment device for determining whether or not it is possible to process the signal by said signal-processing unit; and

a control device for stopping operation of said signal-processing unit or of later stages after said signal-processing unit when said judgment device determines it is not possible for said signal-processing unit to process the signal.

2. The receiving apparatus according to claim 1, wherein:

said control device comprising;

a power-supply-cut-off device for cutting the power supply to said signal-processing unit or said later stages; and

said control device stops operation of said signal-processing unit or said later stages by cutting the power supply by said power-supply-cut-off device.

3. The receiving apparatus according to claim 1, wherein

said receiving apparatus further comprising a memory device for storing judgment criteria;

and wherein

said judgment device determines whether or not said signal processing is possible based on said judgment criteria stored in said memory device.

4. The receiving apparatus according to claim 3, wherein

said receiving apparatus further comprising a criteria-change device for changing said judgment criteria based on data contained in the received signal.

5. The receiving apparatus according to claim 1, wherein

said signal-processing unit is a tuner that amplifies a signal received by an antenna.

6. The receiving apparatus according to claim 1, wherein

said signal-processing unit is a demodulation unit that extracts data by demodulating the received signal.

7. The receiving apparatus according to claim 1, wherein

said signal-processing unit is an error-correction unit for removing code error.

8. The receiving apparatus according to claim 1, wherein

said signal-processing unit is a demultiplexing unit that separates sent data that have been multiplexed.

9. The receiving apparatus according to claim 1, wherein

said signal-processing unit is a decoding unit that returns the encoded data source to the original data.

10. The receiving apparatus according to claim 1, wherein

said control device performs control such as to stop unnecessary operation according to instructions from the user.

11. The receiving apparatus according to claim 1, wherein

said judgment device determines whether or not signal processing is possible based on the receiving power.

12. The receiving apparatus according to claim 1, wherein

said judgment device determines whether or not signal processing is possible based on whether or not synchronization is obtained during demodulation.

13. The receiving apparatus according to claim 1, wherein

said judgment device determines whether or not signal processing is possible based on the bit-error rate during error correction.

14. The receiving apparatus of claim 1, wherein

said judgment device determines whether or not signal processing is possible based on the bit-error rate during decoding.

15. A receiving method of receiving a broadcast transmission comprising:

a signal-processing process of processing the received signal;

a judgment process of determining whether or not it is possible to process the signal in said signal-processing process; and

a control process of stopping the operation of stages after the signal-processing unit, which executes signal processing in said signal-processing process, when it is determined in said judgment process that said signal processing is not possible.