IEEE 1394 apparatus capable of making power class coincide...

Details IEEE 1394 apparatus capable of making power class coincide... IEEE 1394 apparatus capable of making power class coincide...

2005-04-19

2005-04-19

Rinehart, Mark H. (Department: 2112)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C713S300000, C307S087000

Reexamination Certificate

active

06883056

ABSTRACT:
An IEEE 1394 apparatus is disclosed wherein, even when the used power supply is changed over, coincidence of a power class is maintained. A voltage detection unit determines whether or not the output voltage of a power supply circuit is higher than a reference voltage. A code generation bloc generates, based on a result of the determination of the voltage detection unit, a code indicative of power class information which is information representing which one of power supplied from a serial bus and the power supply of its own is used for operation of the IEEE 1394 apparatus. When a changing point detection unit detects a change of the result of the determination from the voltage detection unit, it resets a PHY. When the PHY is reset, it performs self-identification and places the code generated by the code generation unit and indicative of the power class information into a Self-ID packet to be used for transmission of a result of the self-identification to a bus manager, and outputs the Self-ID packet.

REFERENCES:
patent: 6243818 (2001-06-01), Schwan et al.
patent: 6285092 (2001-09-01), Kawahara et al.
patent: 20020152341 (2002-10-01), Bennett
patent: 20030179719 (2003-09-01), Kobayashi et al.
patent: 10-262092 (1998-09-01), None
patent: 11-98159 (1999-04-01), None
patent: 11-163912 (1999-06-01), None
patent: 11-215158 (1999-08-01), None
“IEEE1394 3-Port 400 Mbps Physical Layer (SBPH400-3),” Preliminary data sheet, SGS-Thomson Microelectronics, Mar. 16, 1998, 43 pp.

Affiliated with

Also associated with

Rating

IEEE 1394 apparatus capable of making power class coincide... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with IEEE 1394 apparatus capable of making power class coincide..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IEEE 1394 apparatus capable of making power class coincide... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3403070