JPS60754U - Cue signal recording circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

Figure 1 is a circuit block diagram of a conventional cue signal recording circuit.
2 is a waveform diagram of the main parts of FIG. 1, FIG. 3 is a block diagram of a cue signal detection circuit, FIG. 4 is a circuit block diagram of an embodiment of the present invention, and FIG. 5 is a main part of FIG. 4. FIG. Explanation of main figure numbers, 21... Differential circuit, TR11
...First switch element, capacitor for C12, TR12...Second switch element, 22.
...Voltage comparison means.

Claims (1)

[Scope of utility model registration request] In a cueing signal recording circuit that records data by changing the duty of a recording control signal as a cueing signal, a first switch element is controlled by the differential circuit output to which a recording command signal is applied, and a charging current is controlled by the first switch element. a second switch element for discharging the charge of the capacitor in response to the recording control signal, and a voltage comparing means receiving the terminal voltage of the capacitor as an input, the recording control signal and the voltage comparing means A cueing signal recording circuit characterized in that it supplies a combined output with an output to a control head.