Data communication system, controller device and data...

Pulse or digital communications – Pulse transmission via radiated baseband

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07113547

ABSTRACT:
In a controller device, when a first transmitting signal is at a “L” level, a first operation voltage is high and the amplitude of signals CK and ICK is large, and on the contrary, the amplitude is small when the first transmitting signal is at a “H” level. In a data carrier device, the signals CK and ICK are subjected to full-wave rectification by a rectifier circuit so as to generate a second operation voltage, and a first receiving signal is extracted from the second operation voltage by a first signal detection circuit. On the other hand, in the data carrier device, when a second transmitting signal is at a “L” level, impedance between two contacts is small and the amplitude of the signals CK and ICK is small, and on the contrary, the amplitude is large when the second transmitting signal is at a “H” level. In the controller device, change of the amplitude of the signal ICK is extracted as a second receiving signal by a second signal detection circuit. Accordingly, supply of power and clock and two-way serial data communication can be simultaneously executed between the controller device and the data carrier device through merely two contacts.

REFERENCES:
patent: 5473635 (1995-12-01), Chevroulet
patent: 6145749 (2000-11-01), Thuringer et al.
patent: 6304613 (2001-10-01), Koller et al.
patent: 6323728 (2001-11-01), Schmitt-Landsiedel et al.
patent: 6474558 (2002-11-01), Reiner
patent: 6581844 (2003-06-01), Thueringer et al.
patent: 6996726 (2006-02-01), Den Besten et al.
patent: 2002/0020903 (2002-02-01), Kreft et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Data communication system, controller device and data... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data communication system, controller device and data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data communication system, controller device and data... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3528713

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.