Methods and apparatus for controlling operation of a link layer controller based upon a state of connection between multiple electronic apparatus
US5919261A · kind A · utility
11Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Aug 13, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.