Apparatus and method for supplying power and wake-up signal usin

Details Apparatus and method for supplying power and wake-up signal usin Apparatus and method for supplying power and wake-up signal usin

1996-04-30

1997-09-02

Lee, Thomas C.

Electronic digital logic circuitry

Multifunctional or programmable

Array

395882, 39575005, 326 62, G06F 132

Patent

active

056642040

ABSTRACT:
An apparatus and a method for using a host port to provide power to a level converter for voltage level conversion between a CMOS based palm-top computer and RS-232 host processor are disclosed. Energy from the host RS-232 port is extracted by the level converter from the request-to-send line (-12 V) and the data-terminal-ready line (+12 V). The host port request-to-send line may also be used to send a wake-up signal to turn on the palm-top computer. A momentary (1 millisecond) transition in the request-to-send line of the host port causes the level converter to present an appropriate signal on the wake-up pin of the palm-top computer.

REFERENCES:
patent: 4148098 (1979-04-01), McCreight et al.
patent: 4408291 (1983-10-01), Gunzberg et al.
patent: 4440987 (1984-04-01), Heep et al.
patent: 4607170 (1986-08-01), Wickman
patent: 4621170 (1986-11-01), Picandet
patent: 4642425 (1987-02-01), Guinn, Jr. et al.
patent: 4686506 (1987-08-01), Farago
patent: 4721849 (1988-01-01), Davis et al.
patent: 4782355 (1988-11-01), Sakai et al.
patent: 4884287 (1989-11-01), Jones et al.
patent: 4965550 (1990-10-01), Wroblewski
patent: 5157769 (1992-10-01), Eppley et al.
patent: 5179710 (1993-01-01), Coschieri
patent: 5260612 (1993-11-01), Lehmann et al.
patent: 5313642 (1994-05-01), Seigel
patent: 5343524 (1994-08-01), Mu et al.
patent: 5402015 (1995-03-01), Hammerman
patent: 5440748 (1995-08-01), Sekine et al.

Affiliated with

Also associated with

Rating

Apparatus and method for supplying power and wake-up signal usin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for supplying power and wake-up signal usin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for supplying power and wake-up signal usin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-317171