Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output access regulation
Reexamination Certificate
2008-10-20
2010-10-26
Tsai, Henry W (Department: 2184)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output access regulation
C710S036000, C710S052000, C370S226000, C370S243000, C370S246000, C370S315000, C370S492000, C375S211000
Reexamination Certificate
active
07822890
ABSTRACT:
A bidirectional repeater and data multiplexer for serial data has A-side12C port devices A1-A4coupled to comparators302-308and pull-downs to ground316-322. Comparator outputs are coupled responsive to select lines S1-S4of N:1 Select310to terminal A1of bidirectional control210to control pull-down to non-zero low voltage Vp206at B-side device B. An inverting comparator208coupled to terminal B1of bidirectional control210responds to input threshold voltage Vt less than low voltage Vp, to prevent data lockup due to data flowback to devices A1-A4. Output data from comparator208is coupled responsive to select lines S1-S4of 1:N Select312to control pull-downs316-322. This selectively repeats routing of device A1-A4data to device B. Data from device B is selectively routed to pull-downs of devices A1-A4.
REFERENCES:
patent: 5629931 (1997-05-01), Kausel
patent: 5818821 (1998-10-01), Schurig
patent: 5854909 (1998-12-01), Agrawal
patent: 7176786 (2007-02-01), Kline et al.
patent: 7408993 (2008-08-01), Webster
Gai-tronics, Model IRC300A Repeater Controller Installation and Service Manual, Pub. 43004-028A, Gai-tronics Corporation, Jan. 31, 2005, entire document.
“Comparing Bus Solutions,” Texas Instruments Applications Report, SLLA067, Mar. 31, 2000 (Alicke, et al.), entire document.
Bass Alan S.
Hwang Julie
Kim Woo Jin
Morgan Mark W.
Brady III Wade J.
Patti John J.
Sun Michael
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
Bidirectional data repeater switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bidirectional data repeater switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bidirectional data repeater switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4214412