Methods and apparatus for controlling operation of a link layer

Details Methods and apparatus for controlling operation of a link layer Methods and apparatus for controlling operation of a link layer

Filed on

1997-08-13

Date issued

1999-07-06

Examiner

Ray, Gopal C.

Patent Class

Electrical computers and digital processing systems: support

SubClass

Computer power control

Other Related Categories

710100, 370257, G06F 1300, G06F 126

Type

Patent

Status

active

Patent number

059192615

Description

ABSTRACT:
The invention provides an electronic apparatus and an operation mode controlling method for the same by which the power dissipation of a communication interface of a node on an IEEE 1394 serial bus is reduced. The electronic apparatus includes a communication interface which is composed of a physical layer controller, a link layer controller and a CPU. When the electronic apparatus is not connected to any other electronic apparatus via an IEEE 1394 serial bus, the link layer controller does not operate, but after the connection is established, the link layer controller operates.

REFERENCES:
patent: 4652874 (1987-03-01), Loyer
patent: 5007051 (1991-04-01), Dolkas et al.
patent: 5455569 (1995-10-01), Sherman et al.
patent: 5790876 (1998-08-01), Shima et al.
IEEE Standard for a High Performance Serial Bus, Published Aug. 30, 1996, IEEE Std. 1394-1995, pp. 1-372.
Patent Abstracts of Japan, vol. 95, No. 8, JP 7-134628, Published on May 23, 1995, Hitachi Ltd.

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