H - Electricity – 03 – M
Patent
H - Electricity
03
M
340/166, 325/27,
H03M 7/00 (2006.01) G11B 20/06 (2006.01) H04L 27/10 (2006.01)
Patent
CA 1319405
ABSTRACT OF THE DISCLOSURE The system is used for transmitting information wherein each possible message unit in a set, (e.g. the alpha-numeric symbol set) is defined by a specific interval (I = f5/fR) and messages are transmitted by conversion to the interval code and for the sending of signals of any two frequencies (f5 and fR) that are related by the specific intervals. The signals are received by a receiver which computes the interval, matches it with the pre- defined message unit interval and outputs that message unit. A sequence of message units may be sent using a reference frequency signal and a succession of specific signals each related to the reference frequency by the specific interval for that message unit. A computer program can be utilized for automatically encoding or decoding. The system has the advantages that is relatively free of errors caused by long term frequency shifting, allows transmission at any frequency level, and allows interacting communication between stations wherein the transmitters operate in entirely different frequency domains. In particular, the system is operable to transmit information in the form of interval-coded tones suitable for interpretation by a human listener. Examples of the use of the system include a clock and a voltmeter comprising tone output circuitry.
592192
Borden Ladner Gervais Llp
Ho Kit-Fun
LandOfFree
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