JPH0445138Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an apparatus for re-recording recorded information used when re-recording a song or the like in a device capable of recording and reproducing, such as a cassette tape recorder.

(Prior art) In a cassette tape recorder, recording is performed with a no-signal portion between recorded songs.
Some devices are equipped with a one-shot re-recording device that allows you to pick up the beginning of a certain song if it fails to record it. As shown in Figure 1, when re-recording, the conventional device enters the review from the middle of the recording, and (1) starts between the beginning of the song where the recording failed and the end of the previous song. It detects a no-signal portion between songs (2), and when it detects an interval between songs, it enters recording pause mode (3).

(Problem to be solved by the invention) However, in this conventional device, when detecting a gap between songs and entering a recording pause, the tape starts rotating at high speed and then stops, so when it stops, the erase head or recording head ( (including the recording/playback head) may move to a position opposite to the end of the previous song, and the stopping position also varies. Therefore, when the next recording is made, the no-signal portion between songs is not formed, and in the worst case, the signal recorded portion at the end of the previous song may be erased.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a recorded information retaking device that can reliably form certain recorded information.

(Means for Solving the Problems) In order to achieve this object, the present invention has a magnetic tape on which a plurality of recorded information is recorded with a non-signal portion between each recorded information, a device for retaking the recorded information, comprising: a no-signal portion detection means for detecting the no-signal portion during review; a reproduction control means for starting a reproduction operation when the no-signal portion is detected; recorded information section detecting means for detecting a change in state of the recorded information section from a no-signal section to a signal present state; and an operation for stopping the detection operation of the recorded information section detecting means for a predetermined period of time after the playback control means starts the playback operation. After the control means and the recorded information section detecting means restart detecting recorded information, the magnetic tape is erased when the recorded information section detecting means detects a change in state from a no-signal portion to a signal present in the recorded information section. The present invention is characterized by comprising a rewind control means for rewinding the tape by the distance between the head and the recording/reproducing head or by a length slightly larger than the distance.

(Example) The present invention will be explained below using examples shown in FIGS. 2 to 5. FIG. 2 shows the configuration of a device for realizing the present invention, in which 4 is a recording/reproducing head, 5 is a playback amplifier, 6 is a clipping amplifier that amplifies the playback signal to a level handled by a microcomputer 7 that performs signal processing, 8, 9, and 10 are play, high-speed, and rewind plungers, respectively, and 11 is a drive section thereof, whose operation is controlled by a microcomputer 7, a manual switch, or the like.

FIG. 3 is a functional block diagram realized by the apparatus shown in FIG. 2, in which reference numeral 12 indicates an operation command means such as a switch for commanding one-shot music selection, and reference numeral 13 indicates a device for performing a review operation when the command is given. While I was there,
A no-signal portion detection means 14 for detecting a no-signal portion (between songs) is enabled to operate when a no-signal portion is detected, and changes from the no-signal state of the no-signal portion to the state of the recorded information section with a signal. Recorded information portion detection means 15 detects a change, and reproduction control means 15 performs a reproduction operation after a no-signal portion is detected. 1
Reference numeral 7 denotes an operation control means for stopping the detection operation for a predetermined period of time (the time during which the tape can be moved by the reproducing operation until the recording/reproducing head is located in the no-signal area) after the start of reproduction. 16 is recorded information section detection means 1
4, when a change in state from the no signal state of the no signal part to the state of the recorded information part with a signal is detected,
This is a rewind control means for rewinding the tape by the distance between the erasing head and the recording/reproducing head or a length slightly larger than the distance.

FIG. 4 is a flowchart explaining the operation of this embodiment, and during the transition from the no-signal portion (between songs) detection operation (2) to the recording pause (3) in the operation of FIG. Step 21) is included. That is, when a no-signal portion (between songs) is detected by the no-signal portion detection means 13 during a review (for example, if a no-signal period continues for 0.1 seconds, it is determined that it is a song interval), the playback control means 15 detects a no-signal portion (between songs). is activated and begins playback operation (18).
Specifically, when the no-signal portion detection signal from the recording/reproducing head 4 is input to the microcomputer 7, the drive section 11, which had previously kept the high-speed plunger 9, the rewinding plunger 10, and the play plunger 8 in operation, is activated. The operating state of is switched to a state in which only the play plunger 8 is operated. At this time, if the stop position of the tape varies and the tape stops at the end of the recorded information section (the end of the previous song) before the no-signal section, the recording information section detecting means 14 immediately enters playback operation. When a signal from the head 4 is detected, a change in state from no signal to a signal is mistakenly detected as a curved head, causing the rewind control means 16 to rewind the tape. In order to prevent this, at the same time as playback starts, the recording information portion detecting means 14 performs a timing operation (specifically, an operation that generates a signal when a predetermined number of clock pulses obtained by dividing the clock pulse of the microcomputer is counted). , recording information section detection means 1 for a predetermined time
4 (19), the operation control means 17 operates. That is, the microcomputer 7 ignores the output of the clipping amplifier 6 until the end of the previous song has passed, and then detects the portion (the beginning of the song) where the no-signal portion changes to the signal-present portion (20). The positional relationship between the tape and the head when the beginning of the track is detected is as shown in FIG. In FIG. 5, 22 is a recording/reproducing head, 23 is an erasing head, A indicates the position of the tape when the beginning of a song is detected, a is an inter-track portion, and b is a song portion. When the curved head is detected, the rewinding control means 16 is activated, and the rewinding plunger 10 shown in FIG. 23 or earlier, and then the recording pause mode is set. (21,3).

(Effect of the invention) As mentioned above, after the song interval is detected during review, playback operation begins, and during playback operation, the recording information section is detected only for the time that the tape moves beyond the end of the previous song. This operation is not performed, and when the beginning of a song is detected, it is rewound by the interval between the erase head and the recording/playback head, so it is possible to erase the area near the end of the previous song. There are no gaps between songs, and there are no unerased areas where recording failed.

It should be noted that, although the above explanation has been made with respect to rewriting a song on a cassette tape recorder, the present invention can also be applied to a data cassette or reel-to-reel type tape recorder.

[Brief explanation of drawings]

Figure 1 is a flowchart explaining the conventional technology;
Fig. 2 is an apparatus configuration diagram showing an embodiment of the present invention, Fig. 3 is a functional block diagram of the embodiment, Fig. 4 is a flowchart for explaining the operation of the embodiment, and Fig. 5 is a diagram of the embodiment. It is an explanatory view of tape rewinding. 4... Recording/playback head, 5... Playback amplifier, 6...
Clipping amplifier, 7...microcomputer, 8-10...plunger, 11...driver,
12... Re-taking device, 13... No-signal portion detection means, 14... Recorded information portion detection means, 15... Playback control means, 16... Rewinding control means, 17...
Operation control means.

Claims (1)

[Scope of utility model registration request] A device having a magnetic tape for recording a plurality of pieces of recorded information with a non-signal portion between each piece of recorded information, and re-reading the recorded information during recording on the magnetic tape, wherein the non-signal portion is recorded during review. a no-signal portion detection means for detecting the no-signal portion, a reproduction control means for starting a reproduction operation when the no-signal portion is detected, and recorded information for detecting a change in state from the no-signal portion to the presence of a signal in the recorded information section. part detection means, operation control means for stopping the detection operation of the recorded information part detection means for a predetermined time after the reproduction control means starts the reproduction operation, and after the recorded information part detection means restarts the detection of recorded information, When the recorded information section detecting means detects a change in state from a no-signal section to a signal present in the recorded information section, the magnetic tape is wound by the distance between the erasing head and the recording/reproducing head, or a length slightly larger than the distance. 1. A re-reading device for recorded information, comprising a rewind control means for rewinding.