Title:
バッテリ駆動式の電子機器における節電方法および装置
Document Type and Number:
Japanese Patent JP4510255
Kind Code:
B2
Abstract:
A method and apparatus for generating an automatic receive mode for infrared devices is presented. In accordance with the invention, a battery-powered electronic appliance (1, 2, 3, 4, 5, 6, 7) comprises a communications interface (50) including receive mode circuitry (55) and a battery (5) that supplies power to the receive mode circuitry (55) when the receive mode circuitry (55) is enabled. Upon power up, the communication interface (50) is initialized and the receive mode circuitry (55) enabled to operate in a receive mode for a predetermined amount of time. A timer (25) times the predetermined amount of time. If the timer expires(25), the receive mode circuitry (55) is disabled to remove power from the receive mode circuitry (55), thereby conserving battery power in the device. Preferably, if the predetermined enable time expires while the receive mode circuitry (55) is currently receiving input, the predetermined enable time is extended by an extension time and the timer (25) restarted, with this process repeating until the receive mode circuitry is no longer receiving input. In a preferred embodiment, the receive mode circuitry (55) is re-enabled periodically after a predetermined disable time, and the timing process repeated, causing the receive mode circuitry (55) to be disabled again if data is not received within the predetermined enable time.
Inventors:
Michael El Rudd
Kevin N Smith
Stephen Di Hariri
Kevin N Smith
Stephen Di Hariri
Application Number:
JP2000268130A
Publication Date:
July 21, 2010
Filing Date:
September 05, 2000
Export Citation:
Assignee:
HEWLETT-PACKARD COMPANY
International Classes:
G06F1/26; G06F1/32; G06F15/16; H02J7/00; H04B1/16; H04B10/10; H04L7/00
Domestic Patent References:
| JP11238039A | ||||
| JP11219263A |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Arihara Koichi
Matsushima Tetsuo