JPS5856271A - Automatic music selector - Google Patents

Abstract

PURPOSE:To select and reproduce the indicated music in a short time, by providing numbers of vertical tracks and horizontal channels to store numbers of music and performing a control by a microcomputer. CONSTITUTION:A tape of 50.8mm. width is used with 0.5mm. vertical track width and 0.8mm. track pitch to prepare the recording tracks for 60 numbers of music. At the same time, a recording region of 9 channels for 9 numbers of music is secured in the horizontal and lengthwise direction. A stepping track switching motor 13 is used to move up and down a reproducing head 5 to the tape, and a track sensor 14 is provided to sense an extent of shift for each shift corresponding to the trapping. The result of this detection is applied to an I/O driver 9. Thus the motor 13 is driven based on the indication given from a microcomputer 8 and via the driver 9. Then the music is selected.

Description

[Detailed Description of the Invention] At the same time, a large number of songs are recorded on a wide magnetic tape having a plurality of channels in the horizontal direction, and a specified song is selected and played back in a short time by a selection mechanism using a microcomputer. The present invention relates to an automatic music selection device that is capable of performing automatic music selection, and will now be described in detail with reference to embodiments illustrated in the accompanying drawings.

First, as a magnetic recording tape to be used, for example, as shown in Fig. 1, a tape (T) with a width of 50.8 mm is adopted, and the track width in the longitudinal direction is 0.5 mm, and the track pitch is 0.8. The 11th rack (tl) to the 60th track (t6) corresponds to 60 songs.
o) They are arranged in parallel at '1, and in the longitudinal direction there are channels from the 1st channel (cl) to the 9th channel (cl) corresponding to 9 songs.
C9)'! A total of 540 songs can be recorded by setting up a recording area for 9 channels, and the song number can be determined by the combination of the channel number and track number, and is a 3-digit number. The program number can be determined by assigning the first digit in the negative place to the channel number and the last two digits to the track number. In other words, the program number for the first track of the first channel is 101, The track number of the 60th track of the channel is 160, the track number of the 1st track of the 2nd channel is set to 201, and the medium-heated part of all these tracks, such as the 30th track of the 5th channel, is designated as the home position, and In addition to providing a front end mark (el) and a rear end mark (C2) as stoppers at the front and rear ends of the tape, respectively, start marks (sl) to (s9) are provided at the front end of each channel. However, these marks are formed by, for example, a reflective film.

2. Regarding the running drive mechanism and playback electrical equipment for tape (1), as shown in Figure 2,
), Tick-up motor (2), Gear bus stan motor (
3) are provided for driving separate reels and capuntans, so that the tape (1) can be run with the direction and speed controlled according to instructions from the relay circuit (4), The signal from the playback head (5) that is in contact with the tape (T) and the signal from this head (5) is amplified by the playback amplifier (6) and then played back as audio from the speaker (7), which is different from conventional methods. There are some differences in characteristics from the widely used tape recorder.

The equipment for returning the tape drive mechanism to the home position, that is, the center channel, for selection of channels for music selection and standby before operation is a microcomputer (8),! = ' I/Q driver (9
) and a keyboard switch (10) for this, the relay circuit (4) is connected to the output side of the I10 driver (9), and the end mark provided on the tape (T) is photoelectrically illuminated by reflected light. An end mark sensor (11) that senses the start mark and a start mark sensor (2) that photoelectrically senses the start mark using reflected light are provided so that their output signals are applied to the I10 driver (9). When the playback head (5) is in contact with a part of the tape (T) other than the home position, when the power switch is turned on to start, the I10 driver (9) first sends a rewind signal to the relay circuit (4). Feed thebly motor (
1) When the tape (T) is rotated and rewound to the starting end of the tape (T), the end mark (el) is detected by the end mark sensor (II).
Detected by I (C), I10 driver (9) sends a fast-forward signal to the relay circuit to rotate the pick-up motor (2), which causes the start mark sensor (12) to start while running the tape (T). When the number of marks (S) is counted and the fifth signal is counted, the tick-up motor (2) is stopped, and when selecting a song, the I10 is set by operating the set key on the keyboard switch (10). When a set signal is sent to the driver (9), it becomes ready to receive the track number, and when a three-digit number is specified by the keyboard switch (10), the microcomputer (8) follows the first digit of the three-digit number.
, I10 driver (9), relay circuit (4), start mark sensor θ2).

Under the cooperation of motors (1) and (2), tape (1)
) is made to run so that the starting end of its instruction channel corresponds to the head (5).

In order to move the reproducing head (5) up and down relative to the tape (T), a stepping type track switching motor 03) is provided, and a track sensor 04) is provided to detect the amount of movement corresponding to the track pitch. and apply the sensing result to the T10 driver (9), thereby driving the track switching motor (13) under the direction of the microcomputer (8) and with the intervention of the plow T10 driver (9). The track sensor θ4) can be moved up and down to a desired track, and the track sensor θ4) is a track switching motor (13) that rotates once every time the head (5) moves one pitch.
In addition, a notch is provided in this disk, and this notch is sensed by a photoelectric track sensor (04), and the sensing result is applied to a T10 driver (9) and then processed by a microcomputer (8). It is sufficient to count and memorize the track switching motor 03), and then turn the track switching motor 03) on and off, so that the head (5)
When the track switching motor (13) is in contact with a part other than the home position track of the track K, when the power switch is turned on for starting, the track switching motor (13) first switches the plow head (5) based on instructions from the microcomputer (8). 2.Turn it in the ascending direction and once stop at the upper limit track (1+) by sensor activation at the upper limit, then reverse it in the descending direction and detect the home position (t3o) by the track sensor (14). When the 3-digit number for music selection is entered, the microcomputer (
8), T10 driver (9), relay circuit (4), track sensor (I4, motor θ3), etc. cooperate to move the head controller 5) up and down to a position corresponding to the desired track on the tape (1). do it like this.

When the trench performance is finished, the tape (1) is run in fast forward, and when the start mark of the next song is detected, it is discharged to the beginning of the tape and left on standby, and the keyboard switch (10) or (17) is pressed. When a new song selection instruction is given by operation, the microcomputer (8) judges the degree of deviation of the instructed song position with respect to the desired standby song position based on the instruction, and the motors (1) and (2) are activated according to the judgment. The playback head (5) is caused to correspond to the designated position, that is, the star mark position of the designated song, while counting the start -=<- number and track number using the sensors 02) and (14).

As described above, while the favorite playback head (5) is made to correspond to the start position of the specified track on the tape (1) based on the song selection instruction, a start signal is sent to the T10 driver (9) by operating the start key on the keyboard switch (10). When the tape is fed, the capstan motor (3) moves the tape (
1), the playback head (5) and playback amplifier (6) start playing, and when the playback ends, the audio signal is interrupted, so the silence is sensed and the timer circuit 05) is activated. Then, after an appropriate period of time has elapsed, for example 10 seconds, the relative relationship between the head (5) and the tape (T) is fast-forwarded to the end of the performance channel, and the tape waits at the start of the next music piece.

Of course, the above-mentioned operations can be performed by a microcomputer (8) in which a program is stored in advance.
It is best to reserve and set approximately 15 pieces of music on the computer (8) so that they can be played in sequence. In addition to providing in connection with 9), the fixed keyboard switch (10)
In addition to the wireless remote control keyboard switch θ7) with similar functions,
It is convenient to attach the receiver (18) to the T10 driver (9), and the keyboard switch (10) is equipped with a brake key in addition to the numeric keys, set key, and start key. Operation based computer (
8) It is preferable to enable the T10 driver (9) to stop the performance even in the middle of the performance.

It would be convenient to be able to perform using cartridge-type tapes, which were still widely used in the past.
9 so that its output can be applied to the regeneration amplifier (6).

As explained above, according to the present invention, a large number of tracks in the vertical direction and a plurality of channels in the horizontal direction are provided, a large number of songs are recorded, and numbers are assigned to these 10-many recorded songs. In addition, track selection by raising and lowering the playback head and channel selection by tape running are controlled by the microcomputer. It has the effect of allowing easy and quick selection under operation, and is suitable for so-called karaoke performance devices or jukeboxes.

[Brief explanation of the drawing]

The drawing shows the invention in one embodiment,
Figure 1 is a developed diagram of the tape used, and Figure 2 is a block diagram. (1) Supply motor (2) Tick-up motor (3) Capstan motor (5) Playback head (8) - φ microcomputer (10) Keyboard switch (]l) --- End mark sensor (12) --- Start mark sensor 03) --- Track switching motor 04) --- Track sensor (+7) --- Fist --- Remote control keyboard switch (19) --- Cartridge Type tape recorder (T)
...Tape (1) ...Track (c) ...Channel Patent Applicant Chief Nobu Hara Yushin Sangyo Co., Ltd.

Claims (1)

[Claims] / A wide magnetic tape is used, on which a large number of tracks are arranged in parallel in the vertical direction and a plurality of channels are provided in the horizontal direction to record a large number of songs, and the songs recorded on the tape are numbered. is assigned and stored in the microcomputer, and the starting end of the designated program is brought into contact with the playback head by a command from the microcomputer according to the program command by the keyboard switch. As equipment, a track switching motor for raising and lowering the playback head is provided, which is activated by instructions from a microcomputer, and a track sensor is provided to send the sensing results to the microcomputer. In addition to controlling the motor by the microcomputer, an automatic music selection device is provided with a sensor that detects the starting end of each song on the tape, and sends the sensing result to the microcomputer. 2. The automatic music selection device according to claim 1, which is provided with a wireless remote control keyboard switch in addition to the fixed keyboard switch. 3. An automatic music selection device as set forth in claim 2, which comprises a cartridge type tape recorder. l The home position is set near the center of a plurality of songs, and the playback head is made to stand by in correspondence with the home position while preparing to start playing. Automatic music selection device.