JPS58133688A - Automatic music selection device - Google Patents

Abstract

PURPOSE:To obtain an automatic music selection device without mis-count of inter-musics and reproducing the stored music, even if the selection is skipped near the end of the music during the reproduction of automatic music selection, by reproducing in high speed after rewinding a magnetic tape for a prescribed amount in depressing a skip button during the reproduction of automatic music selection. CONSTITUTION:When the number of inter-music count is not coincident with the stored music address, a PLAY solenoid 201 and an FF solenoid 202 are operated at the same time to attain high speed reproduction, and when the stored music address is obtained, the PLAY solenoid 202 only is activated to switch the mode into the reproduction state. In depressing a skip button 406 during the reproduction, first a REW solenoid 203 is activated, the tape is rewound, and a pulse signal of a pulse circuit 402 outputting a pulse proportional to the amount of tape running is counted at an operation section 302. When a prescribed amount is rewound, the PLAY solenoid 201 and the FF solenoid 202 are activated to attain high speed reproduction, an inter-music signal 202 are activated to attain high speed reproduction, an inter-music signal of an inter-music detection circuit 104 is counted and the stored music address is sought for.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to automatic music selection in a magnetic recording/reproducing device.

By detecting the silent parts between songs recorded on magnetic tape, that is, the intervals between each song, and counting the intervals between each song, a pre-memorized song is selected, and when the playback of that song is finished, In an automatic song selection device that repeats playback and high-speed playback to automatically select and play back a pre-stored number of songs, as described above.

If you want to interrupt playback in the middle of a song and play it at high speed up to the first stored song, in conventional devices, if you press the switch to switch from playback to high-speed playback (skip), the tape drive mechanism will switch from playback to the next step. Switched to fast regeneration state, but when the mechanism switches from regeneration to fast regeneration state.

-The inter-track detection circuit may malfunction due to instantaneous movement of the magnetic tape or mechanism switching noise, so when switching the operation of the mechanism, the inter-track detection circuit will not operate for a certain period of time. There is. Therefore, if you skip near the end of one song, the one song interval detection circuit will not operate.If the first song interval passes during the fixed time set to 5, the circuit that counts the one song interval will erroneously count and memorize it. There was a problem with selecting a different song than the one originally used.

An example of the operation of the conventional device will be explained with reference to FIGS. 2 and 95.

FIG. 2 shows a song recorded on a magnetic tape, and FIG. 5 shows the operation of the mechanism. For example, 1 in advance
If you memorize the first and fifth songs and skip near the end of the first song, the mechanism will immediately go into high-speed playback mode and start high-speed playback, but the inter-song detection circuit will not operate for a certain period of time. (Shaded area in Figure 3) Therefore, if one song (between the 1st and 2nd song) passes during that time, one listening session will be incorrectly counted, and in the end, the 3rd song will pass and the 4th song will be played. Ru.

An object of the present invention is to overcome the above-mentioned drawbacks of the prior art, and to provide an automatic music selection device that can play back stored songs without erroneously counting one song even when skipping near the end of one song during playback of automatic music selection. There is a K that provides.

To achieve this object, the present invention is characterized in that when a skip button is pressed during playback of automatic music selection, the magnetic tape is rewound by a certain amount and then played back at high speed.

An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, the signal reproduced by the reproduction head 101 is
It is amplified by the amplifier 102 and output from the output electron 105. On the other hand, the reproduction signal from the reproduction head 101 is sent to the microcomputer 5000 via the one-track detection circuit 104.
It is connected to the power section 304. microcomputer 50
0 is the storage unit 501° calculation unit 502. Control unit 303. Input section 304. It is composed of an output section 505, and the input section 5
04 has 1 song selection button 403. Memory button 404. Start button 405 to start automatic song selection. Skip button 4
06 is connected to a pulse circuit 402 that generates a pulse proportional to the running of the magnetic tape, and the output section 505 is connected to the PLAY solenoid 201 of the mechanism drive section 200,
A display circuit 401 that displays the song address is connected to the solenoid 202 and the FF solenoid 205.

The microcomputer 500 stores data inputted by the manual input section 604 in the storage section 301.

Based on the data in the human data storage unit 501, the calculation unit 50
2 and outputs data from the output section 505 based on the operation result, but the input section 504. Storage unit 501, calculation unit 502. The control unit 505 performs data transmission and control between the output units 505. When performing automatically with the device shown in FIG.
Display on 1.

When the displayed song address is the desired song, press the memory button 404
When the user presses , the song address is stored in the storage section 501. The user repeats the above series of operations by pressing the music selection button 403 and the storage button 404, and once a plurality of song addresses have been memorized, the start button 405 is first pressed to begin automatic music selection. The microcomputer 500 counts the inter-song signal from the inter-song detection circuit 1040, determines whether the counted number matches the song address previously stored in the storage section 501, and then outputs the inter-song signal from the mechanism drive section 200.
Controls the solenoid to switch operating states such as regeneration state and high-speed regeneration state. If the inter-song count number does not match the memorized song address, the PLAY solenoid 201 and the FF solenoid 202 are activated simultaneously to enter the high-speed playback state, and when the memorized song address is reached, the PLAY solenoid 201 is activated.
switch to playback mode. When the skip button 406 is pressed during playback, the flEW solenoid 203 is first activated to rewind the tape.

The calculation unit 502 counts the pulse signal of the pulse circuit 402 (which outputs pulses) proportional to the amount of tape travel, and when the tape is rewound by a certain amount, the PLAY solenoid 201 and the FF solenoid 202 are activated to enter high-speed playback mode and play one song. Interval detection circuit 1040 counts inter-music signals and searches for the next stored tune address.

The above series of operations are shown in FIGS. 2, 5, and 4. Songs 1 and 5 of the songs recorded on magnetic tape (Figure 2)
When playing a song automatically, as shown in Figure 4,
Play the song (PL, 4Y). When the skip button is pressed near the end of the first song, if high-speed playback is immediately started as in the case of the conventional device shown in Fig. 5, the inter-song detection circuit 1 may be affected by the noise generated when the mechanism changes its operation.
During the hold time (shaded area) to prevent malfunction of 04, or the unstable time (shaded area) of the song interval detection circuit 104, the gap between the first and second songs may not be detected, and one song address may be incorrectly detected. I counted. Therefore, the tape is rewound by the amount that matches the hold time or instability time (Figure 4).
Then, when high-speed playback is started, malfunctions such as not detecting the gap between the first and second songs can be prevented. The amount of rewinding is determined by counting the pulses of the pulse circuit 402, but another method is to rewind for a predetermined period of time.

A flowchart of a program for implementing the above operations is shown in Figure ts5.

When the program starts, it is first determined in step 501 whether the song selection button 403 has been pressed, and if it has been pressed,
The number of times is counted and displayed in step 502. Next, it is determined in step 505 whether the memory button 404 has been pressed, and if it has been pressed, the song address currently being displayed is stored.

In step 505, it is determined whether the start button 405 has been pressed, and if it has not been pressed by 7 degrees, the process returns to step 501.

Repeat the above series of operations. If the start button 405 is pressed, step 508 determines whether or not to play the first song.
Judge by. If it is not to be played, the mechanism is switched to high-speed playback in step 513, and in step 506 it is determined whether there is a gap between songs, and when one song gap is detected, the gap between songs is counted in step 507.

It is again determined in step 508 whether it is the target song. The above operations are repeated until the desired song is reached. When the desired song is reached, the process moves to step 509 and the mechanism is played back. During playback, the end of the song is determined and whether the skip button has been pressed is determined in steps 510 and 511, and when one song is finished, the process returns to step 507.

Also, if the skip button 406 is pressed, step 512
The mechanism is set to rewind at step 514, and the pulse circuit 4020 counts pulses at step 514.

Alternatively, elapsed time may be counted. In step 515, the ζ pulse count or elapsed time count (in step 514) is determined.

If it is determined that the predetermined period of time has been rewound, the process moves to step 515 and switches to an operating state in which the primary stored song is searched.

As described above, according to the present invention, when a plurality of songs are automatically played, the skip button can be pressed during playback of one song.

When pressing the skip button near the end of the song being played, when skipping to the next self-selected track, there will be no erroneous counting of one song, allowing accurate automatic channel selection.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the automatic music selection device of the present invention. Figure 2 shows the recording signal recorded on magnetic tape. Fig. 3 is a schematic diagram showing an example of the operation of a conventional device, and Fig. 4 is a schematic diagram showing an example of the operation of a conventional device.
FIG. 5 is a schematic diagram showing an example of the operation of the present invention, and FIG. 5 is a flowchart of a microcomputer program for realizing the present invention. 0101...Reproduction head. 104... Song interval detection circuit. 500...Microcomputer. 501...Storage unit. 502... Arithmetic unit. 505...Control unit. 504...Input section. 305...Output section. 402...Pulse times WII. 405...Song selection button. 404...Memory button. 405...Start button 406...Skip button. Representative Patent Attorney Susuki 1) Ri Shin, 6 years old IWJ 2nd figure 1 + 3rd figure 4rfJ

Claims (1)

[Scope of Claims] Storage means for storing the song addresses of desired songs in advance, means for high-speed reproduction of whites recorded on a magnetic tape, and means for reproducing whites recorded on a magnetic tape at high speed, means for detecting silent portions (intervals between C songs); means for counting #intervals; means for switching the tape drive mechanism to a playback state when the count between songs matches the stored song address; and reproduction of a desired song. When the above-mentioned mechanism is finished, the music selection device has a means for switching the mechanism to a high-speed playback state, and there is an input means (operation button) for switching to high-speed playback during playback of one song, and when the operation button is pressed, the magnetic tape is held constant. and means for rewinding by the amount. An automatic song selection device characterized in that when the operation button is pressed during playback of a desired song, the magnetic tape is rewound by a fixed amount of 1 and then the high speed playback state is established.