Title:
LOW POWER CONSUMPTION ELECTRIC DEVICE
Document Type and Number:
Japanese Patent JP3449112
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lower power consumption in an electronic device such as a video cassette recorder for instance.
SOLUTION: A switch 2 is opened by a microcomputer 13 when a power source is turned off to supply electric power to the microcomputer 13 and a light receiving part 14 from a backup element 12. The charging of the element 12 is intermittently performed by the control of the switch 2 with the microcomputer 13. When the power source is turned off, the microcomputer 13 operates in a low power consumption operation mode in which the function of its part is stopped and a sleep mode of slow clock and a subclock operation mode are repeated. The operation mode can be returned to the usual operation by interrupt processing to the microcomputer 13 by means of an indication by a remote control or a key, timer reservation operation or the like.
Inventors:
Tomoyuki Hanai
Takeshi Omoto
Toshiyuki Katsumoto
Hidenori Yamazaki
Takeshi Omoto
Toshiyuki Katsumoto
Hidenori Yamazaki
Application Number:
JP10327996A
Publication Date:
September 22, 2003
Filing Date:
March 29, 1996
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G06F1/26; G06F1/32; H02J1/00; H02J7/10; H02J9/00; H02J9/06; H04N5/76; (IPC1-7): H02J1/00; G06F1/26; G06F1/32
Domestic Patent References:
| JP7284225A | ||||
| JP7302133A | ||||
| JP88681A | ||||
| JP7121259A | ||||
| JP2294712A | ||||
| JP1170515A | ||||
| JP4328410A | ||||
| JP6177636U |
Attorney, Agent or Firm:
Masatomo Sugiura
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