Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Reexamination Certificate
2001-04-13
2002-09-17
Jeanpierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
C341S133000
Reexamination Certificate
active
06452530
ABSTRACT:
This application is related to co-pending U.S. application Ser. No. 09/429,519 for A METHOD AND APPARATUS FOR COMMUNICATION USING PULSE DECODING, filed Oct. 28, 1999 and to co-pending and co-owned U.S. application Ser. No. 09/805,854 for METHOD AND APPARATUS TO RECOVER DATA FROM PULSES, filed Mar. 13, 2001, both of which are owned by the Assignee of the present invention and are herein incorporated by reference for all purposes.
BACKGROUND OF THE INVENTION
This invention relates generally to a communication technique and more specifically to techniques for communication by converting arbitrary analog waveforms to sequences of pulses.
In co-pending, commonly owned U.S. application Ser. No. 09/429,519, the communication system illustrated in
FIG. 1
shows that groups of pulses are supplied to a decoding (decision) device
14
. The decoder disclosed therein recovers data from the pulses; for example, by counting pulses. Additional recovery techniques are disclosed in co-pending, commonly owned U.S. application Ser. No. 09/805,854.
It is desirable to increase the robustness of systems which employ the techniques disclosed in the foregoing identified applications. The utility of such systems can be further increased by increasing their information carrying capacity.
SUMMARY OF THE INVENTION
According to the invention, a method and apparatus for a communication circuit is provided to recover information in a received signal. The communication circuit comprises at least two receiver circuits. The received signal is fed to each receiver circuit. Each receiver circuit is configured in accordance with the invention to produce output comprising a group of one or more pulses in response to detecting some portion of the received signal. The output of each receiver is fed to a decision device, which produces one or more symbols.
In one embodiment of the invention, the groups of pulses from each receiver are processed by the decision device to produce a single symbol. In this embodiment of the invention, information transmission is more robust due to the redundancy of the information.
In another embodiment of the invention, the groups of pulses from each receiver are processed to produce a symbol from each such group, thereby enhancing information carrying capacity.
REFERENCES:
patent: 4425647 (1984-01-01), Collins et al.
patent: 4459591 (1984-07-01), Haubner et al.
patent: 5892701 (1999-04-01), Huang et al.
patent: 6023672 (2000-02-01), Ozawa
patent: 6259390 (2001-07-01), Joe
Abell, E., “Gated Oscillator Emulates a Flip-Flop”, EDN Access, pp. 1-2, Mar. 16, 1995.
James P. Keener, Analog Circuitry for the van der Pol and FitzHugh-Nagumo Equations, IEEE 1983, pp. 1011-1015.
Peter Konig, Image Segmentation Based on Oscillatory Correlation, Neural Computation 9, 1997, pp. 805-836.
Patarasen, S. et al., Maximum-Likelihood Symbol Synchronization and Detection of OPPM Sequeunces, IEEE Transactions on Communications, New York, US, Jun. 94, p. 9, vol. 42, No. 6.
Joe Jurianto
Lye Kin M.
Allen Kenneth R.
Jeanpierre Peguy
The National University of Singapore
Townsend and Townsend / and Crew LLP
LandOfFree
Method and apparatus for a pulse decoding communication... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for a pulse decoding communication..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for a pulse decoding communication... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2833223