Importance

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Abstract

An analog communication system includes a transmitter and at least one remote receiver for receiving an incoming signal carrying an analog component from a suitable transmitter. The transmitter and receiver are provided with circuitry for transmitting, receiving and recording and for playback of the analog componant of the transmitted signal at different rates. The system is adapted to transmit along messages at a high rate to conserve transmission time and to record and playback the message at a slower audible rate. The system circuitry includes a decoder which may be programmed to recognize an address code specific to a particular receiver or group of receivers or may be activated simply by the incoming signal without an address code, to emit the enable signal. The decoder includes rate memory for storing record and playback rates in memory sectors corresponding to the memory sector of RAM in which the message is stored. The system further includes circuitry for converting the analog conponent of the signal to digital format to conserve memory and for reconverting a digital signal to analog format for playback in analog format.

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First Claim