JPS58130455A - Sound recording controller - Google Patents

Abstract

PURPOSE:To record surely musics without dropping out the top parts thereof by detecting the top part of the reproduced signal from a digital audio disc and reproducing the same after returning a pickup in the reverse direction for a certain time then starting the recording. CONSTITUTION:When a disc player is put in a play state, the reproduced output (m) thereof is inputted to a recording controller 10, and the rise (top part of a music) is detected with a rise detecting circuit 15. The detected output is applied to a one-shot circuit 17. When the circuit 17 is triggered, a reverse instruction signal for the disc player is outputted. An FF 14 is reset by the detected output (e) and a play indication signal (d) is annihilated. The lapse of the reverse period is detected with a detecting circuit 18 for the fall of a reverse instruction signal (f). The FF 14 is again set by the detected output (g), and a play indication signal (d) is generated. An FF 19 is also set, and the recording instruction signal for a tape recorder is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording auxiliary device C that is capable of recording signals reproduced from a digital audio disc using a normal tape recorder. The structure is such that no part (for example, the first part of a music signal) is missing.

EMBODIMENT OF THE INVENTION The present invention will be described below in detail with reference to an embodiment shown in one drawing. (1) is a disk player, (2) is a recording control device according to the present invention, and (2) is a tape recorder.

In a disc player, there is a main motor (2) that rotationally drives the disc (D), and a main motor (21) that controls the rotation of this main motor (21).
1 servo circuit (3), a disk (optical pickup means (4) for reading the signal), this pickup means [
4) Feed motor C5 that sends the motor in the radial direction of the disk.
), a second servo circuit (6) for controlling the rotation of the feed motor f51, and a digital processing circuit (7) for digitally processing the signal reproduced by the pickup means (4).

The output from this digital processing circuit (7) is converted into A-A and returned to the original analog signal (music signal) by the D-A converter (8), which instructs the main motor [2] to drive or stop. The pickup means (4) is driven and stopped.

To give directions to advance or retreat? iF! 1. Second servo circuit (
3) A control circuit (9) that applies an instruction signal to (6).
) is made into a WR. 1st. Second servo circuit (31
(6+ controls the rotation of the main motor (2) and feed motor (5) based on the signal output from the digital processing circuit (7).The configuration of such a disc player (2) is not the gist of the present invention. Moreover, since it is already known, a detailed explanation will be omitted.

The tape recorder mark indicates recording amplifier +31), recording magnetic head (a), capstan motor g3. It includes a control circuit (b) that controls this motor Q.

Next, the turning off of the recording control device, which is the gist of the present invention, will be explained with reference to FIGS. 2 and 6. disc player 4
) to the magnetic tape recorder using the tape recorder mark.
Leave it as a recording standby letter■.

Specifically, the setting is made so that the recording state can be entered when a recording instruction signal (O) (described later) is applied.

Now, when the switch (111) of the recording control device is closed (Fig. 3a), the rise of the power supply is detected by the rise detection circuit C.
The detection output (FIG. 3, 6) is applied via the OR gate a3 to 0 and 70 (hereinafter referred to as t' and F). Then, F and FL141 are set, and the Q output (FIG. 3d) becomes a high level. This Q output 1dl becomes a performance instruction signal to the disc player (1). This performance instruction signal fdl is applied to the control circuit C91 of the disc player 1), thereby setting the disc player q) to the performance state.

When the disc player enters the playing state, its playback output is outputted from the recording control device QO+2. Now, this playback output is the beginning of the song (for example, the beginning of the song).

It is detected by the rising side output circuit [151, and its detection output (
FIG. 3-) is applied to the one-shot circuit 07)C2 via the antagonist GfS.

In this way, 1. The one-shot/so-to circuit 0η is triggered, but the high level output (@3 f) of this circuit 07) is the reverse instruction signal and null for the disc player +11.

This reverse instruction signal (f+ is distub 1 noya (1
) is applied to the control circuit (9) of .

The pickup means (4) returns to its original state. During this reversal period, Pi Sokuadbu means (4
) is the period required to be located between songs. Note that F, Fn, and 11 are reset by the detection output 1g+ applied via the OR gate i, and the Q output, that is, the performance instruction signal (di disappears).

Now, the passage of such a reverse period is detected by a fall detection circuit ω that detects the fall of the reverse instruction signal Ifi. At this detection output (!), F, F (144) are set again, and a performance instruction signal +d+ is generated. This Q output (FIG. 3i) becomes a recording instruction signal to the tape recorder (to).

This recording instruction signal (tl) is applied to the control circuit (b) of the tape recorder ω, and therefore the tape recorder (
) becomes a recording letter ■. In this way, the disc player (1) is in the playing state, the tape recorder (1) is in the recording state, and the playback output (1) of the disc player (1) is sent to the recording amplifier (C), which is inferior to the tape recorder, via the transmission line (1). Rad 0 is applied to the magnetic tape C: thus recording is performed.

By the way, after the reverse is completed, the performance state changes to (2), and immediately after that, the rising edge of the playback output fml in the disc player is detected by the rising edge detection circuit ('I9), and this detection output (cl) is detected by the one-shot circuit G'. 7) causes the inconvenience of returning to the +1 hearth state again.Therefore, in the present invention, at the end of reverse, the one-shot circuit is activated at the detection output (!1) of the fall detection circuit (to). (to), and output the output [A+ of this one-shot circuit
By applying the voltage to the input signal i, the triggering of the one-shot circuit α caused by the detection output (4)C2 of the standing detection circuit mark is prohibited for a predetermined period.

When the switch (Ill is opened, the fall of the power supply is detected by the fall detection circuit ■, and the detection output C) outputs F and F.
Q4α9 are both reset, and both the performance instruction signal id1 and the recording instruction signal 4M fi+ disappear.

According to the present invention described above, when recording the reproduction signal of the disc player on the tape recorder C2.

You can reliably record the beginning of a song without missing it.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the relationship between a recording control device, a disk player, and a tape recorder according to the present invention, FIG. 2 is a block diagram of the recording control device, and FIG. 3 is an operating waveform diagram. (i5 is a rising edge detection circuit (a circuit that detects the head of the signal)
, a flip, flop (performance instruction signal generation circuit, αη is one-shot circuit (11 pass signal generation circuit + (19 is flip, flop (recording instruction signal). = 267-

Claims (1)

[Claims] (1) A device for recording, on a tape recorder, signals reproduced from a digital audio disc by a pickup means of a disc player. A transmission line that transmits the signal reproduced from the disk to the tape recorder side, a detection circuit that detects the head of the signal reproduced from the disk, and a response to the output of this detection circuit that reverses the pickup means for a predetermined period with 1-. a reverse instruction signal generation circuit that generates a reverse instruction signal to the disc player to return it to the direction; a performance instruction signal generation circuit that generates a performance instruction signal to put the disc player into a playing state after the predetermined period has elapsed; 1. A recording control device comprising: a recording instruction signal generation circuit that generates a recording instruction signal to set the tape recorder to recording state after a predetermined period of time.