JPS6011379B2 - Information recording and playback method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to, for example, recording and playing music or writing information (
The present invention relates to an information recording and reproducing method that automatically and continuously performs recording) and output (reproduction) on a plurality of information recording media.

2. Description of the Related Art Various tape recorders capable of automatically recording and reproducing information on a plurality of information recording media, such as cassette tapes (hereinafter referred to as cassettes), have been proposed and put into practical use.

In these devices, multiple cassettes are loaded into a certain magazine-like thing, and one by one they are taken out for recording and playback, etc., and when finished, they are put back and the next cassette is sent out. It is configured. However, recording tapes are generally provided with feeding tapes that are not coated with magnetic material at the leading and trailing ends of the recording tapes, so unlike the conventional example described above, cassettes cannot be mechanically removed one by one for recording and playback. If the configuration is such that, for example, when music or the like is recorded and played back, the recording will be interrupted midway, making it very difficult to listen to it. Furthermore, in recent years, music and the like have been often recorded from radio broadcasts, but the running time of the recording tape is often shorter than the playing time of the music. For example, depending on the standard, a cassette tape has a playing time of 3.
There are 0 minutes, 45 minutes, 60 minutes, 9 minutes, 120 minutes, etc., and the most commonly used recording tapes are those with a performance time of 60 minutes or 90 minutes. On the other hand, even if the music is broadcast for a long time, it is broadcast seamlessly. Therefore, when recording this, one had to pay close attention to the breaks in the movement and change cassettes, or omit some parts of the recording, which was very inconvenient. In view of the above-mentioned points, it is an object of the present invention to provide an information recording and reproducing method that can automatically and continuously perform recording and reproduction on a plurality of information recording media.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

Cassettes A and B, which serve as information recording media, are respectively mounted in the mounting portions shown in the figure.

Cassettes A and B have reels la, la', lb, respectively.
lb', tape guides 2a, 2a', 2b, 2b', and pinch rollers 3a, 3b provided on the tape recorder main body are set when a cassette is mounted. Furthermore, capstan rollers 5a and 5b which come into pressure contact with the pinch rollers 3a and 3b when the tapes 4a and 4b are run are retractably provided at the base (not shown) of the driving section shown in FIG. These capstan loafs 5a, 5b have a flywheel 6, a belt 7a,
7b, and this flywheel 6 is further driven by a motor 8. In addition, pinch rollers 3a,
3b is connected to the solenoids 9a, 9b so as to be able to be detached from the capstan rollers 5a, 5b, and when the solenoids 9a, 9b operate, the pinch rollers 3a, 3b
The capstan rollers 5a and 5b are pressed against the capstan rollers 5a and 5b. On the other hand, heads 1, 2 are provided opposite the tapes 4a and 4b.As shown in FIG. ,PH
2, erase heads EH, , EH2. Note that 10 is a tension roller that applies appropriate tension to the tape 4a, and 11 is an impedance roller that absorbs vibrations of the tape 4a. The positional relationship of each head is as shown in Figure 3.
H2 and playback head PH, PH2 are in close proximity to each other on tape 4.
The erasing heads EH, , EH2 are provided at the rear end in the feeding direction, spaced apart from the erase heads EH, EH2.

Further, each of the tapes 4a and 4b is composed of a recording portion 12 coated with a magnetic material and a feeding portion 13 not coated with a magnetic material, and furthermore, a metal thin film 14 is pasted on the feeding portion 13. There is. In addition to the drive section configured as described above, it further includes a control section as shown in the block diagram of FIG.

That is, the gain control 15 is set to the head day, day 2.
This control controls the level of the recording signal sent from the microphone 16 to the head 16, or the reproduction signal sent from the head 2 to the speaker 17, respectively. When head 2 operates after head 2 operates, the level of the playback signal (or recording signal) from head 2 is gradually attenuated. Preferably, the playback signals from each head day, day 2 (
The sum of the recorded signals) is always made to match the level of the reproduced signal (or recorded signal) from one of the heads 2, 2, in a steady state. The amplifier 18 amplifies the recording signal from the microphone 16 and the reproduction signal sent to the speaker 17. Reference numeral 19 denotes an erasing circuit, which constantly generates a high-frequency signal, and erases the erasing head E as needed.
Send this high frequency signal to H,,EH2.

The control circuit 20 controls the motor 8, solenoids 9a, 9b, gain control 15, and erase circuit 19.
It is controlled according to the signal from Day 2. Next, the operation of the embodiment configured as described above will be explained with reference to FIGS. 5 and 6. First, cassettes A and B are installed.

Next, press a recording button (not shown). At this time, the motor 8 immediately starts rotating. Since the solenoid 9a from the control circuit 2 is inactive, the pinch roller 3a comes into pressure contact with the capstan roller 5a, thereby holding and conveying the tape 4a. At this time, solenoid 9b
is operated by the control circuit 2. Therefore, the capstan roller 5[1 is merely rotating idly and is not transporting the tape 4b. When the feeding portion 13 on the female end side of the tape 4a faces the erasing head EH,
The metal thin film 14 is detected by the erase head EH. The detection signal S at this time is sent to two control circuits. Then,
After a delay of one hour, a signal is sent from the control circuit 20 to the recording head RH, and the recording head RH becomes ready for operation. When a recording signal is sent from the microphone 16, it is amplified by an amplifier 18 and further sent to a gain control 15. At this time, since the recording head RQ is not operating, the gain control 15 does not control the bell, and the recording head RH,
is sent to and recorded. However, the recording was completed,
When the metal thin film 14 at the end of the tape 4b is detected by the erasing head EH, a detection signal S2 is sent to the control circuit 2. After a period of time has passed since the detection signal S2 is sent, the control circuit 20' deactivates the solenoid 9b, and the pinch roller 3b presses against the capstan roller 5b.
When the tape 4b is transported and the metal thin film 14 on the starting end side of the cassette B is detected by the erasing head EH2, a detection signal S3 is sent to the control circuit 20'. In response to this detection signal S3, a signal is sent from the control circuit 20 after a certain period of time, and the recording head R becomes ready for operation. Then, the gain control 15 is immediately controlled by the control circuit 20', and the control shown in FIG. 6 is performed. The time interval 2 is preset by the length of the feeding portion 14 of the tapes 4a, 4b and the conveyance speed. After time t2, the recording head RH and the pinch roller 3a stop. Subsequent recordings are made only to cassette B, and when the recording of cassette B is completed, all recordings are completed. In the above embodiments, recording was explained, but the same applies to playback.

Further, even if there are two or more cassettes, it can be implemented in the same machine. In the above embodiment, the rear end of the tape was detected by the erasing head, but a new head may be provided.
Furthermore, optical detection or mechanical detection may be performed.

As described above, according to the present invention, information can be automatically and continuously recorded and reproduced on a plurality of information recording media, so information such as music can be recorded and reproduced seamlessly. . Therefore, it is convenient to record for a long time without interruption.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a drive unit according to an embodiment of the present invention, FIG. 2 is an enlarged view of a cassette of the same example, and FIG. 3 is an enlarged view of a tape of the same example.
Figure 4 shows the same example. FIG. 5 is a time chart of the main parts of the same example, and FIG. 6 is an explanatory diagram of the same example. A, B...Cassette, 15...Gain control, 8...Motor, 20...Control circuit,
, ratio... head, EH,... erase head, 14...
...Metal thin film. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. An information recording and reproducing method for conveying first and second information recording media having feeding portions on which information is not recorded at the leading and trailing ends, and reproducing or reproducing information on these first and second information recording media. , a detection means is provided for detecting the end of the first information recording medium and the beginning of the second information recording medium, and in response to the detection result of the detection means, information is transferred to the first recording medium. After the feeding part of the second recording medium is conveyed for a predetermined time before the recording or reproduction ends, recording or reproduction of information on the second recording medium is started, and information is transferred from the first recording medium to the second recording medium. An information recording and reproducing method characterized by continuously recording and reproducing information on a recording medium.