Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-12-18
1999-01-19
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
340662, 340663, 320 33, 320 39, G08B 2100, H02J 704
Patent
active
058618120
ABSTRACT:
A removable battery pack for powering a pen-based or portable computer system in which the battery pack blocks its terminals when inserted into an unknown system. The known system includes a power supply microcontroller which passes battery charge data back and forth between a memory located in the battery pack and the power supply microcontroller. A battery microcontroller, located in the battery pack, eavesdrops drops on the communication between the power supply microcontroller and the memory, and when it validates a known signature of this communication, the battery microcontroller then enables the terminals of the battery pack. A trickle discharge current flows from the battery pack whenever the battery pack is out of the known system to allow the power supply microcontroller to power up in the case of a dead auxiliary battery.
REFERENCES:
patent: 4153867 (1979-05-01), Jungfer et al.
patent: 4413221 (1983-11-01), Benjamin et al.
patent: 4651081 (1987-03-01), Nishimura et al.
patent: 4724528 (1988-02-01), Eaton
patent: 4775827 (1988-10-01), Ijntema et al.
patent: 4803416 (1989-02-01), Abiven et al.
patent: 4977393 (1990-12-01), Arnold et al.
patent: 5012176 (1991-04-01), LaForge
patent: 5055763 (1991-10-01), Johnson et al.
patent: 5204611 (1993-04-01), Nor et al.
patent: 5218288 (1993-06-01), Mickal et al.
patent: 5237257 (1993-08-01), Johnson et al.
patent: 5315228 (1994-05-01), Hess et al.
patent: 5363312 (1994-11-01), Ninomiya
patent: 5399446 (1995-03-01), Takahashi
patent: 5514946 (1996-05-01), Lin et al.
patent: 5539298 (1996-07-01), Perkins et al.
patent: 5641587 (1997-06-01), Mtchell et al.
patent: 5646508 (1997-07-01), Van Phuoc et al.
patent: 5656917 (1997-08-01), Theobald
Freiman Joseph F.
McConkey Steven Kent
Mitchell Nathan Austin
Compaq Computer Corporation
Hofsass Jeffery A.
Trieu Van T.
LandOfFree
Battery pack wakeup does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Battery pack wakeup, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery pack wakeup will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1249987