Embedded digital video hard disk video recorder telephone alarm
A technology of hard disk video recorder and digital video, applied in the direction of alarm, telephone communication, instrument, etc., can solve the problems such as not yet known, and achieve the effect of low power consumption and safe living environment
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[0010] Such as figure 1 , figure 2 As shown, the present invention includes a digital video hard disk video recorder, a telephone network and a control circuit, and the control circuit includes a processor circuit 1, an on-hook circuit 2, a TDMF signal generator circuit 3, a signal frequency stabilization output circuit 4, and a communication isolation circuit 5, TDMF signal receiving circuit 6, communication and power supply plug-in device 7, described hook-and-hook circuit 2 includes relay k2, PNP triode and peripheral components, described TDMF signal generation circuit 3 includes U4 and peripheral components thereof, and described signal stable The frequency output circuit 4 includes a triode Q4 and its peripheral circuits, the communication isolation circuit 5 includes a relay T1, capacitors C1, C2, and the TDMF signal receiving circuit 6 includes U6 and peripheral components, and the above-mentioned circuits and devices are correspondingly adapted It is electrically co...
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