Signal processing device for collating bit, signal processing method, and signal processing program

• US 20050152402A1
• Filed: 01/05/2005
• Published: 07/14/2005
• Est. Priority Date: 01/09/2004
• Status: Abandoned Application

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Umewaka, Masahiro
• Application Number:
  US11/029,864
• Publication Number:
  US 20050152402A1
• Time in Patent Office: Days
• US Class Current: 370/474
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: B60R 25/406 Power supply in the remote key
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks

Abstract

There is disclosed a signal processing device including a reception part which receives a signal from outside, a preliminary detection part, a main processing part whose power consumption is larger than that of the preliminary detection part, and a power supply part which supplies power to the main processing part. The preliminary detection part collates bit values of bit information constituted of a combination of bit values included in the signal received by the reception part and those of collation key information constituted of a combination of preset bit values. Moreover, the power is supplied to the main processing part from the power supply part in a case where all the bit values agree with each other.

Claims

1. A signal processing device including:

a reception part which receives a signal from outside;

a preliminary detection part;

a main processing part whose power consumption is larger than that of the preliminary detection part; and

a power supply part which supplies power to the main processing part,

wherein the preliminary detection part collates bit values of bit information constituted of a combination of bit values included in the signal received by the reception part and those of collation key information constituted of a combination of preset bit values, to supply the power from the power supply part to the main processing part only in a case where at least some bit values agree with each other.

2. The signal processing device according to claim 1, wherein the bit information is a signal whose frequency has been modulated in accordance with the bit value.

3. A signal processing method executed in a signal processing device including:

a reception part which receives a signal from the outside;

a preliminary detection part;

a main processing part whose power consumption is larger than that of the preliminary detection part; and

a power supply part which supplies power to the main processing part, the method comprising;

a receiving step of receiving the signal from outside by use of the reception part;

a preliminary detecting step of collating bit values of bit information constituted of a combination of bit values received in the receiving step and those of collation key information constituted of a combination of preset bit values by use of the preliminary detection part; and

a power supplying step of supplying power to the main processing part from the power supply part only in a case where at least some bit values of the bit information agree with those of the collation key information in the preliminary detecting step.

4. The signal processing method according to claim 3, wherein the signal including the bit information is a signal whose frequency has been modulated in accordance with the bit value.

5. A signal processing program in a signal processing device including:

a computer;

a reception part which receives a signal from outside;

a main processing part whose power consumption is larger than that of the computer; and

a power supply part which supplies power to the main processing part,

the program allowing the computer to function as preliminary detection means for collating bit values of bit information constituted of a combination of bit values included in the signal received by the reception part and those of collation key information constituted of a combination of preset bit values, and supplying the power to the main processing part from the power supply part only in a case where at least some bit values agree with each other.

6. The signal processing program according to claim 5, wherein the bit information is a signal whose frequency has been modulated in accordance with the bit value.