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Pimentel; Alberto
Paris, FR
No. of patents:

Patent Number Title Of Patent Date Issued
4492936 Fractional-division frequency synthesizer for digital angle-modulation January 8, 1985
In order to deliver an angle-modulated output signal as a function of digital information, the frequency synthesizer delivers an output frequency F.sub.S =(N+k)F.sub.R, where N is the integral part of a number N+k and F.sub.R is a reference frequency. Provision is made for a variable
4326293 Transmitter-receiver with automatic alternation control April 20, 1982
Prior to each voice activity period, the transmitter supplies a digital preamble for coding the speech signal levels and during these periods high frequency signals modulated in substantially constant amplitude, but transmits nothing other than said preamble and said periods. On receptio

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