JPS6074139A - Automatic musical performance device of tape recorder or the like - Google Patents

Abstract

PURPOSE:To detect a specified position, to reproduce exactly a desired music, and to suppress noises, etc. of an intermusic by detecting the specified position, and thereafter, applying muting until a recording medium is returned in a low-speed mode to the vicinity of this specified position. CONSTITUTION:An output of rotation detectors 15, 16 of a reel is converted to a pulse signal corresponding to the running quantity of a tape 8 by a running quantity detecting circuit 17 and supplied to a counter 18. At the time of a high-speed mode, a music detecting circuit 19 for detecting an intermusic outputs an intermusic signal when a level of a reproducing signal is below a reference value, and initialized the counter 18 to a prescribed value. The counter 18 starts to count said pulse signal from this time point, and when the count value reaches a prescribed quantity, a controlling circuit 12 reverses reels 6, 7. Following this reversal, the counter 18 is also counted down, a point where its contents become the initialized value is confirmed, and at the time point when its contents have become the prescribed quantity again, the controlling circuit 12 sets the reproducing mode, and immediately before the contents of the counter 18 become roughly the initialized value, a switch 23 closed before that time is opened and reproducing is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic performance apparatus such as a cheap recorder, which is commonly used to locate a specific position of a signal recorded on a recording medium, for example, to locate the beginning of a song.

BACKGROUND TECHNOLOGY AND PROBLEMS For example, by using a tape recorder, you can select the beginning of a desired song from a tape on which a plurality of songs have been recorded.
(1; When detecting the minute and playing that song, conventionally, the tape is first fast-forwarded, and when 1iJl of the song is detected, it goes a little too far and ends up winding the tape. However, the vehicle stops running at the point where the song ends, which is thought to be the beginning of the previously detected song, and then switches to endogenous mode.
ζThe song will be played from the beginning -) to CG).

However, if there is a conventional cueing method like this,
Because the running speed of the tape changes during fast forwarding and rewinding, the tape winding ratio is
There are inconveniences such as when rewinding the track, it can be detected and the track returns to the beginning of the song.

In addition, if we try to avoid this inconvenience, a certain length between songs is required, and as a result, the number of songs that can be recorded on the tape is limited, or the above-mentioned delay is required before the next song starts playing. There are inconveniences such as the need for some waiting time to correspond to the intervals between songs of a certain length.

Also, depending on the length of the song interval (silence a1;), if you rewind to the previous song like a double series, the last part of the previous song will be played for a while, and then the song 'ζ There is an inconvenience that the desired song is played after a pause (if there is noise, it is played). This is particularly likely to occur if a mechanism with poor braking performance is used.

Purpose of the Invention In view of the above, the present invention is capable of quickly and reliably detecting a specific position of a signal recorded on a recording medium, and is capable of identifying the recorded signal from 41'l i5 to i11',
An object of the present invention is to provide an automatic performance device such as a tape recorder that can reliably perform /-1:.

1 Summary of the Invention This invention includes a position detection means for detecting a specific position of a signal recorded on a recording medium, a travel amount detection means for detecting a travel amount of the recording medium, a handwriting position detection means and the travel amount. a control means for controlling the running of the recording medium based on the output of the detection means, and a muting means for muting the re-lived sound from the recording medium at a predetermined time,
By configuring the system so that at least the above specific position is detected and muting is performed in low speed mode from ζ to the vicinity of the specific position of 111 until the recording medium is returned, the beginning of the song etc. is recorded on the recording medium. By quickly and reliably detecting the specific position of the signal that is being played, the 4Q position from the beginning of the desired song becomes FiJ function, and the position at the end of the previous song or between songs becomes There will be no noise or groaning.

Embodiments In the above, an example in which an actual Mti example of the present invention is applied to a Tessolen I-Y is shown in FIGS. 1 and 2.

FIG. 1 shows the configuration of the circuit 11 of this embodiment. In the same figure, the human power signal from the input terminal (1) is electronically controlled by a level setting device such as a weight volume control (2). The signal is set to the recording level, and after being amplified by the recording amplifier (), it is supplied to the -1'c head (5) through the switch (7 contacts RF, 6
) and the tape stretched between the take-up reel (7) (
8).

The signal reproduced by the head (5) passes through the contact PB side of the switch (4), is further amplified by the reproduction amplifier (9), and then is set to an electronically controllable level setter, such as an electronic volume. The signal is set to a predetermined output level at Oω and is output to the output terminal (11).

To set the level of the electronic volume (2) and 001, press the level '1 knob down switch (not shown) to set the level υf.
The control circuit (12) detects the state in which the recording level is set, and based on the detection output, control signals are formed in the decoders (13) and (14), thereby setting the recording level in the level setter (2) and setting the level setter, respectively. The output level at 0θ) is set. Note that these recording level setting values and output level setting values are always stored in the memory (22) via the control circuit (12), and are reset to blue when there is a change.

Further, rotation detectors (15) and (16) are provided to detect the rotation speed of the reels (6) and (7), respectively, and the outputs of these rotation detectors (15) and (16) are used to detect the running amount. In the detection cycle (17), the signal is processed to form a pulse signal corresponding to the running distance of the tape (8), and is supplied to the counter (!8).

In addition, the contact point P B1ll of the switch (4) is used as a position detection means for detecting the specific position of No. 48, which is specially recorded in high speed mode such as during W forwarding or rewinding. A music detection circuit II (19) is installed to detect the interval between the music and the music (music interval), and this oil detection circuit (1
9) compares the level of the reproduced signal from the head (5) with the reference value, and if the level of the endogenous signal is 1. Initialize the counter (18) to a predetermined value by feeding the song start signal (inter-song signal) to the counter (18).Then, from this point on, the counter (18)・Leaf detection circuit (1
7), and the count value is supplied to the control circuit (12).

When the count value of the counter (18) reaches a predetermined ♀, the control circuit 178 (12) controls the tape running mechanism (21) via the drive circuit 1/8 (20) to move the reels (6) and (7).
) times +19, reverse the direction.

Then, with the reversal, the counter (18) also counts down, and the point where the content changes to the initial setting 11, that is, the starting point of the song, is changed to (il Lg), and the counter (1B
) when the content of jl+degrees reaches the specified number of punches, the control circuit (I
2) is a tape running mechanism (21) via a drive circuit (20).
), and the operation mode is set to low speed mode (1■1 raw E-1
), and just before the contents of the counter (18) reach approximately the initial setting value, the output of the ζ amplifier (9), which had been closed under the control of the control circuit (12), is grounded and muting is applied. The switch circuit (23) used as a muting means is opened, and the output from the ζ amplifier (9) is passed to the electronic volume QOI to reproduce the recorded Shingetsu. Note that the switch circuit (23) may be closed even in the same speed mode, ``fast forward mode'', or rewind mode, so as to perform muting.

This operation will be further explained with reference to FIG.

As shown in Fig. 2, if you want to detect the rjJi portion of 1111 Y at the end of multiple songs recorded on the tape (8), as shown in Fig. 2B, Scanning is performed from the X side in fast forward (F F) mode 7, and when the silent state continues from time 1° to L2, the surface detection circuit (19) separates this period from the song interval by 1', and starts the song at time t2. Set the Y striking jjiij (detection point) and '(counter (1B)) to a predetermined value, for example, "000".Then, set the counter (1B) at '
At time t3 when 18) counts a predetermined value, for example 00:3'', the control circuit (12) rewinds the operation mode 1.
EW) Switch to Mode IS ° (Rewind the tape until the value of the counter (jB) reaches the previous "000" and check the starting point of song Y. Then, connect the reversal and press the time button. 4-. From 'j l 2, the counter (18) counts up to a predetermined value, for example, '-003'', and at this counting point L4, the control circuit (12) again changes the operation mode to IF,
(FWD) 7-t', and the counter (It+) is 1 and 1.
i Feed the tape until it reaches "ooo", and the content of this counter (18) will be "for example" just before ooo"acom".
-001'' from time t5, 1,000 times 1#t (2
3) Open and reduce muting by h1!1 to 7.1l
Il 'Make I within/1-.

Also, if you want to listen to the song recorded on the tape where the head is currently at 1.ν (for example, song Y
If you want to start playing the I' Kutate original song from the beginning during playback, set the operation mode to rewind mode and detect the starting point of the song, as shown in Figure 2 C. At time L2, the counter (18) is set to a predetermined value, for example, "000.
” to start counting from this point, and the counter (
When the count value of 18) reaches a predetermined value, for example, "-003", the operation mode is set to regeneration mode at step 4, and the counter (
18) The count value is the previous predetermined value “ooo”
For example, the switch circuit (23) may be opened from time t5, immediately before the signal becomes '-001', muting is canceled and +111Y is reproduced.

As a result, '(in this example, -tan count (18)
When is set to a predetermined value, the starting point of the song is found based on the amount of tape travel, regardless of whether or not there is a song. If you don't do this, you won't have to play five songs, and you can quickly and reliably play the desired song.Furthermore, by canceling the "y, 1j--ting" from time L5 before the cue point of the song. Since that song is played back, even if the adjoining song is rewound, a part of that adjoining song will not be reproduced or noise will not be generated between the songs.

In addition, in the above-mentioned embodiment, the count value of the counter (I8) from 2 to 13 and from time t2 to 4 does not necessarily have to be equal to -4゛. good.

APPLICATION EXAMPLE Although the above-mentioned embodiment C has been explained using the case where the present invention is applied to a tape recorder, the present invention is not limited thereto, but can be similarly applied to other electronic devices that require such a function. Application 1iJ ability.

As related to the effects of the invention, this invention transports the recording medium at 1st speed, detects the specific position of the Shingetsu recorded on it, and records one by reversing the recording medium. Return the medium to a predetermined 17,
'lr? The recording medium was detected again in low speed Sade? Fixed 1
When feeding the sheet 1 foot in a stationary position, muting was applied just before that specific position, and after that, this muting was canceled and G was applied so that the desired recorded value was 11 mm 1-'4. Even if the part of the undesired recorded signal is reproduced beyond the part of the desired recorded signal, the part of the undesired recorded signal may be reproduced, or the undesired recorded signal may be different from the desired recorded signal. Noise or the like in the unrecorded portions between the recorded signals will not be reproduced, and only the desired recorded signals can be reliably reproduced from the beginning of the song.

In addition, since the amount of return of the recording medium from a specific position of the recorded signal can be set uniquely regardless of the silent part, the information recorded on the recording medium is not limited or Or, the waste of time at the beginning of the performance is eliminated, and the natural form of the performance of 110υ becomes i1J Noh.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing one embodiment of the present invention, and FIG. 2 is a line diagram for explaining the operation of the first embodiment. (8) is the tape, (12) is the control circuit, (17) is the traveling m detection times (Raku, (18) is the counter, (1!) is the surface detection circuit, and (23) is the switch circuit. Figure 1 Figure 2

Claims (1)

[Claims] A position detecting means for detecting a specific position of a signal recorded on a recording medium, a traveling distance detecting means for detecting a traveling distance of the recording medium, the position detecting means, and -! - a control means for controlling the running of the recording medium based on the output of the traveling distance detecting means; and a muting means for muting the reproduced sound from the recording medium at a predetermined time; An automatic performance device such as a tape recorder, characterized in that muting is applied from ζ after the position is detected until the recording medium is returned again in a low speed mode near the specific position.