Signal priority device
First Claim
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1. A communication system comprising:
- means for generating a first electrical signal at a speaker output terminal;
a transceiver for generating a second electrical signal indicative of an audio output at a speaker output terminal;
at least one speaker for converting said first and second electrical signals to an audio output; and
signal priority means interconnecting the output terminals of said means for generating and said transceiver with said at least one speaker, said signal priority means receiving said first and second electrical signals, said signal priority means having a first state transmitting said first electrical signals to said at least one speaker, and switchable to a second state in response to said second signal, said signal priority means transmitting said second signal to said same at least one speaker;
wherein said signal priority means further includes delay means for holding said signal priority means in said second state for a predetermined time after the termination of said second electrical signal; and
wherein said priority means comprises;
limiter means receiving said second electrical signal for generating a limited output signal having a predetermined value;
amplifier means for amplifying said limited output signal, to generate an amplified signal;
rectifier means for rectifying said amplified signal to generate a rectified signal indicative of the value of said amplified signal;
delay means, receiving said rectified signal, for generating a delay signal for a predetermined time after the termination of said second signal; and
switch means receiving said first and second electrical signals, said switch means having a first state outputting said first signal to said at least one speaker, said switch means switchable to a second state in response to said rectified and delay signals, said switch means in said second state outputting said second signal to said same at least one speaker.
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Abstract
Disclosed herein is a signal priority device responsive to the audio output signal of a citizen band (C.B.) transceiver for switching the response of a common speaker system from the audio output signal of a radio receiver to the audio output signal of the C.B. transceiver. The disclosed signal priority device is connected between the existing audio output jacks of the radio receiver and the C.B. transceiver and a common speaker system, and automatically integrates the operation of the two separate devices. The signal priority device is transparent in the system when either the radio receiver or C.B. transceiver is turned off.
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Citations
14 Claims
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1. A communication system comprising:
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means for generating a first electrical signal at a speaker output terminal; a transceiver for generating a second electrical signal indicative of an audio output at a speaker output terminal; at least one speaker for converting said first and second electrical signals to an audio output; and signal priority means interconnecting the output terminals of said means for generating and said transceiver with said at least one speaker, said signal priority means receiving said first and second electrical signals, said signal priority means having a first state transmitting said first electrical signals to said at least one speaker, and switchable to a second state in response to said second signal, said signal priority means transmitting said second signal to said same at least one speaker; wherein said signal priority means further includes delay means for holding said signal priority means in said second state for a predetermined time after the termination of said second electrical signal; and wherein said priority means comprises; limiter means receiving said second electrical signal for generating a limited output signal having a predetermined value; amplifier means for amplifying said limited output signal, to generate an amplified signal; rectifier means for rectifying said amplified signal to generate a rectified signal indicative of the value of said amplified signal; delay means, receiving said rectified signal, for generating a delay signal for a predetermined time after the termination of said second signal; and switch means receiving said first and second electrical signals, said switch means having a first state outputting said first signal to said at least one speaker, said switch means switchable to a second state in response to said rectified and delay signals, said switch means in said second state outputting said second signal to said same at least one speaker. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In combination with a first means generating a first signal at a speaker output terminal, a transceiver having a squelch circuit for generating a second signal, a speaker output terminal and at least one speaker, an interrupter switch interconnecting the speaker outputs from said first means and said transceiver with the at least one speaker, wherein said interrupter switch has a first state connecting the at least one speaker to the speaker output terminal of said first means and switchable to a second state in response to an output at the speaker output terminal of said transceiver, said interrupter switch in said second state connecting the at least one speaker to the output terminal of the transceiver, wherein said interrupter switch comprises limiter means receiving said second signal from the speaker output terminal of the transceiver for generating a limited output signal having a first predetermined value;
- amplifier means for amplifying said limited output signal;
rectifier means for converting said amplified signal to a d.c. signal;
delay means, receiving said d.c. signal, for generating a delay signal a predetermined time after the termination of the second signal; and
switch means having a first state and switchable to a second state in response to said d.c. signal, said switch means connecting the at least one speaker to the speaker output terminal of means for generating a first signal in said first state and connecting the speaker to the speaker output terminal of the transceiver. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- amplifier means for amplifying said limited output signal;
Specification