JPH0330933B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a repeat device for a tape player that repeatedly plays the same song. The main methods of repeating in conventional tape players are: (1) turning on the repeat switch starts the repeat operation, and then repeating the operation until the repeat switch or another release switch is pressed; (2) repeating with the repeat switch. There are methods such as specifying the mode and specifying the number of repeats using the 10 key. However, (1) has the disadvantage that the same song is played over and over again until the release action is performed. In this point (2), the repeat operation ends after only the set number of times, but there is a drawback that key operations are complicated because 10 keys are required to specify the number of repeats. The present invention enables the number of repeats to be set using only a repeat switch, and its feature is that the repeat device for an audio device performs a repeat operation in which when the rear end of a song is detected, the performance is performed again from the front end of the song. and a control means for performing a repeat operation as many times as the repeat switch is turned on from off, and a display device connected in parallel with the switch and turned on by a lighting control signal of a display device that lights up while the repeat operation is performed. The lighting control circuit comprises a switching circuit that is controlled by the switching circuit, and a changeover switch that connects or disconnects the lighting control signal to the switching circuit. This will be explained in detail below with reference to the drawings. FIG. 1 is a block diagram of a tape deck control device using a microcomputer. In the same figure
IC ₁ is a 4-bit 1-chip microcomputer with internal RAM, ROM, CPU, and I/O ports. IC ₂ is a decoder driver that converts BCD (binary coded decimal) codes into seven-segment signals for digital display (numbers). IC ₃ is an IC for controlling reel motor MOT ₁ , and inputs Ai and Bi
The relationship between the outputs A ₀ and B ₀ is shown in the table below.

[Table] However, the R terminal is a reference voltage input, and the reel motor MOT ₁ changes its rotation speed in proportion to this input voltage. IC ₄ is an IC that controls the capstan motor MOT ₂ , and its truth values are the same as in Table 1.
However, since the R terminal is grounded, motor MOT ₂ rotates at a constant speed. PLN ₁ is an electromagnetic solenoid that drives the mechanism that loads and ejects the cassette pack, and PLN ₂ is the mechanism that brings the magnetic head into contact with and leaves the magnetic tape surface in the pack, and the pinch roller that brings the pinch roller into contact with and leaves the capstan. This is an electromagnetic solenoid that interlocks and drives the mechanism. RL is a relay that switches between A track and B track (described later) of the magnetic tape, Tr ₁ is a transistor that drives plunger PLN ₁ , and Tr ₂ and Tr ₃ are plunger PLN _2.
Tr ₄ is a transistor that provides high and low binary reference voltage to the R terminal of IC ₄ ,
BUF is buffer, D is diode, L ₁ to L ₆ are
AUTO-J (start song selection), FF (early rise), REW
This is a light emitting diode that displays (rewind), run A, run B, and REPEAT. An integration circuit is installed at the input of microcomputer IC ₁ .
Delayed reset signal on power up from INT
RST, key matrix according to timing ₁ to ₄ , 16 types of inputs K ₀ to K ₃ from KM, reel rotation detection signals SA, SB, and music (audio) signal SM, and their outputs include
There are 19 ways ranging from REPEAT to MUTE. The key matrix KM is a 4×4 matrix as shown in Fig. 2, and among the switches S ₀₁ to S ₃₄ at each intersection, S ₀₃ ,
S ₀₄ , S ₁₃ , S ₁₄ , S ₂₁ , S ₂₃ , S ₂₄ , S ₃₂ , and S ₃₃ are manually operated, and the rest are linked to the movement of internal mechanisms or other mechanisms. The on states of these switches are read by scan signals ₁ to ₄ having different phases from the microcomputer IC ₁ . For example, repeat switch _S04 being turned on is read as a combination in which output _K0 is turned on at timing ₄ . At this time, switches S ₁₄ , S ₂₄ , and S ₃₄ are off, so K ₁ to K ₃ are not turned on, and switches S ₀₁ to _{S 03} are off, so K ₀ is turned on at timings ₁ to ₃ . never turns on. A music signal is a magnetic change caused by sliding a magnetic tape or magnetic head that is converted into an electrical signal, which is then amplified by an equalizer amplifier and reproduced as sound or voice. This music signal SM has a sufficient level as an input to _IC1 . The music signal is used to check whether information has been written on the magnetic tape, and is essential for detecting unrecorded portions (between songs), which will be described later. The output AUTO-J is a signal indicating that cue selection is in progress, and this causes the light emitting diode L ₁
lights up. FF, REW indicates fast forward or rewind
Light-emitting diodes L ₂ and L ₃ are each driven to blink with a 2Hz signal. Running A (L) and running B (R) indicate the running direction of the magnetic tape. In running A, the light emitting diode _L4 lights up, and in running B, the light emitting diode lights up.
L ₅ lights up. The output REPEAT is a signal indicating that the repeat operation is in progress, and this lights up the light emitting diode Auto _L6 . Song number (number of times) display A~
According to the table below, C displays the number of songs to be skipped when selecting a song for cueing, and the number of times to repeat when repeating.

[Table] The values in the table above are counted down each time a song gap (unrecorded portion between songs) is detected. EJE−
The PLN output is used to drive the electromagnetic solenoid _PLN1 , and thus to turn on and off the transistor _Tr1 .
HEAD-S (start signal), HEAD-K hold signal)
controls transistors Tr ₂ and Tr ₃ on and off,
When the transistor Tr ₂ is turned on at startup, a large current (100 to 200 mA) flows through the electromagnetic solenoid PLN ₂ . On the other hand, during hold, transistor Tr ₃
turns on and a small current flows through solenoid PLN ₂ . REEL- of REEL-A, -B, -C outputs
A and -B become the two inputs Ai and Bi of IC ₃ . On the other hand, in REEL-C, the transistor Tr ₄ is turned on and off, and the R terminal of the IC ₃ is switched to high and low stages. In other words,
When REEL-C is at a high level and transistor Tr ₄ is turned on, the reference voltage of the R terminal drops and the reel motor
MOT ₁ rotates at low speed. Conversely, if Tr ₄ is off, motor MOT ₁ rotates at high speed. Low speed rotation is regeneration,
During recording, high-speed rotation is during fast forwarding and rewinding.
The CAP-A and -B outputs become inputs Ai and Bi of IC ₄ and are used to control the rotation of capstan motor MOT ₂ . This logic is shown in Table 1. MUTE
The terminal outputs a mute signal MUTE OUT for audio cut (mute). 3 is a time chart at the time of repeat, FIG. 4 is an explanatory diagram of the repeat operation, and FIG. 5 is a flow chart of the repeat operation, and the operation will be explained with reference to these. In principle, the only switch used is the key matrix KM repeat switch S ₀₄ shown in Figure 2, but to cancel it midway,
Use STOP/EJE switch S ₃₂ , FF switch S ₁₃ or REW switch S ₂₃ . Figure 3 shows repeat count "2" by pressing repeat switch S ₀₄ twice.
It looks like it has been set. In other words, if you press switch S ₀₄ once when the statute of limitations is t ₀ (during play), the number of times display CBA will be
001, and at the same time, the light emitting diode L ₆ is turned on by the REPEAT output of IC ₁ in FIG. Next, press switch S ₀₄ again at t ₁ , and the number display CBA becomes 010.
The number of repeats is set to "2". If the switch _S04 is not pressed thereafter, the last song interval of the song currently being played will be detected at time _t2 , and the repeat operation will start from this point. Figure 4 shows this conceptually.
REW (rewinding) is performed from the last song interval to the first song gap, and PLAY (REPEAT) is started from there. Time t ₂ to _{t 6} is the first repeat operation, and during this period, the number of times display C to A is counted down to 001. At time t ₆ , when the song interval at the end of the song is detected again, the same operation is repeated, and during this time the time
At t ₈ , the number display C~A counts down to 000,
And the output REPEAT of IC ₁ causes light emitting diode L ₆
is turned off and repeat mode is canceled. In other words, when the repeat operation is repeated twice, the next song is played. The repeat operation described above will be explained according to the flow shown in FIG. First, when repeat switch S ₀₄ is turned on, the falling edge is detected and it is determined whether it is the first time or not, and the repeat indicator (IND) is turned on.
is turned on. This is the light emitting diode in Figure 1.
It is _L6 . After that, the process progresses as →→→, and when the repeat switch S ₀₄ is turned off, the process progresses to the →→ route. And again repeat switch S ₀₄
When is turned on, the process advances to →→→→→→. After repeating this and reaching the repeat number "7", it returns to "0" again. This route is→→
It is. The repeat count set in the above operation is the 6th repeat count.
Seven segment indicator as shown in the figure
Displayed as IND ₁ . IC ₁ and IC ₂ in the figure correspond to those in Figure 1, respectively, and IC ₂ has 3-bit inputs A, B,
Decode C to generate 7-bit segment signal a~
g and drive each segment La to Lg of IND ₁ . The tape deck control device shown in FIG. 1 has not only a repeat function but also a cue selection function. This cue selection and repeat are completely different functions and are never operated at the same time, so even if the number of selected songs is displayed with the indicator IND ₁ , the two can be easily distinguished by lighting the light emitting diodes L ₁ and L ₆ in Figure 1. . Figure 7 shows another example of a circuit that shares the indicator IND ₁ , which counts the output (3 bits) of the cue number register REG ₁ that counts the number of times the cue switch S ₃₃ is turned on and the number of times that the repeat switch S ₀₄ is turned on. Switch the output (3 bits) of the repeat number register REG ₂ to be counted using the data selector SEL, and set the outputs A, B, and C to the 6th
This is the input to IC ₂ in the figure. In this way, one indicator can provide two types of display. FIG. 8 shows an operation flow for switching the data selector SEL in FIG. 7. In the above embodiment, a case where a plurality of repeat operations can be set is illustrated, but as shown in FIG. 9, a transistor Tr is connected in parallel to the repeat switch _S04 , and the _REPEAT If you feed back the output or display A, turning on switch S ₀₄ once will turn on the transistor Tr, and no matter how many times you turn on switch S ₀₄ thereafter, the falling edge will not be detected by IC ₁ , so you can set the number of repeats. It is also possible to perform a deformation operation in which the value is limited to "1". The operation flow in this case is always →→ in FIG. 5, and the transistor Tr is turned off after one repeat operation. Switch SW 1 in FIG. ₁ is for switching between multiple repeats (when off) and one-shot repeat (when on). As described above, according to the present invention, the number of repeats can be set with just the repeat switch, so the setting operation is easy, and since the program advances to the next program after repeating the predetermined number of times, the program returns after starting the repeating operation. It has advantages such as no operation required.

[Brief explanation of the drawing]

Figures 1 to 5 are diagrams showing one embodiment of the present invention, in which Figure 1 is a configuration diagram of a tape deck control device using a microcomputer, Figure 2 is a detailed diagram of its key matrix, and Figure 3 is a diagram showing an embodiment of the present invention. A time chart of the repeat operation, FIG. 4 is an explanatory diagram of the repeat operation, FIG. 5 is a flowchart of the repeat operation, and FIGS. 6 and 7 are block diagrams showing examples of display circuits for the number of repeats and the number of selected songs. FIG. 8 is a flowchart showing the switching operation of FIG. 7, and FIG. 9 is a block diagram of a circuit that limits the number of repeats to one. In the figure, _S04 is a repeat switch, and _IC1 is a microcomputer.

Claims (1)

[Claims] 1. A repeat device for an audio device that performs a repeat operation of playing from the front end of a song again when the rear end of the song is detected, and the repeat operation is performed as many times as the repeat switch is turned on from off. a control means; a switching circuit connected in parallel with the switch and controlled to be turned on by a lighting control signal of a display device that lights up while performing the repeat operation; and a switching circuit that connects and disconnects the lighting control signal to the switching circuit; 1. A repeat device for a tape player, comprising a changeover switch for switching.