JPH0113494Y2 - - Google Patents

Description

[Detailed explanation of the invention] Generally, home video tape recorders (hereinafter referred to as
A system has been proposed that uses a combination of a television receiver (referred to as a VTR), a television receiver, and a stereo device. For example, Fig. 1 shows a combination of a home VTR and a television receiver, and in this Fig. 1, 1 is
VTR, 2 indicates its main circuit, 4 indicates a television receiver, and when playing back VTR 1, main circuit 2
At the same time, the video and audio signals are reproduced and converted into television signals of two channels in the Kanto area, for example, and this television signal is supplied to the television receiver 4 through the switch 3.

Furthermore, when the television receiver 4 receives general broadcasting, the received signal from the antenna 5 passes through the switch 3 to the television receiver 4.
supplied to

Note that when recording on the VTR 1, the received signal from the antenna 5 is supplied to the VTR 1, and the
A television signal from 1 is supplied to a switch 3 so that it can be monitored as needed.

Therefore, to play back VTR1 with this combination, turn on the playback switch of VTR1 and turn on the VTR1 playback switch.
It is necessary to set the TV receiver 4 to playback mode, set the television receiver 4 to 2 channels, and connect the switch 3 to the VTR side.

When performing such an operation using a remote control (remote control), the VTR commander (remote control transmitter) 6 must be used to perform the above operations, and the TV commander 7 must be used to perform the following operations. , operations become extremely complicated or complicated.

A remote control commander as shown in FIG. 2 has been proposed to solve these problems.

That is, in FIG. 2, S _w is an operation switch composed of a plurality of normally open switches for remote control operation of _the VTR 1 and _television receiver 4.
The operation switch Ss is the switch for connecting the switch 3 to the VTR side, and the operation switch S ₂ is the switch for connecting the television receiver 4 to the playback mode.
This is a switch to make it 2 channels. These operating switches S _w (S _p , S _s , S ₂ ,...
) are connected to the encoder 11.

This encoder 11 generates, for example, a command signal E _c as shown in FIG. 3A when the operation switch S _w is operated. That is, the command signal _Ec has a start signal for cueing with a constant pulse width and a 16-bit code signal, and the code signal has a wide pulse width when it is "1" and a signal when it is "0". When , it is a PWM signal with a narrow pulse width, and the code signal changes to “1” or “0” depending on the operated switch among the operating switches _SW .
The combination of is changed.

This command signal E _c is then supplied to the modulation circuit 12 to produce an AM modulated signal as shown in FIG. 3B.
Em, and this signal E _n is supplied through the amplifier 13 to a transmitting element, for example, an infrared light emitting diode 14 .

Further, 20 indicates a control circuit for executing the above-mentioned items in one operation, S _c is an operation switch for sequentially generating command signals, which is composed of a normally open switch for the operation, and 21, 22, and 23 are operation switches for sequentially generating command signals. Differential circuit,
24, 25, and 26 are falling trigger type monostable multivibrators, which are alternately connected in series and monostable multivibrator 2.
The outputs of 4, 25, and 26 are npn transistors Q ₁ ,
It is supplied to the bases of Q ₂ and Q ₃ , and its collector and emitter are connected in parallel to operation switches S _p , S ₂ , and S _s . In addition, monostable multivibrator 24, 2
The inversion periods 5 and 26 are made slightly longer than the period of the command signal E _c .

According to such a configuration, when any one of the operation switches S _w is turned on, the command signal E _c of the code signal corresponding to that switch is turned on.
is formed, and a signal is output from the infrared light emitting diode 14.
Infrared light modulated by E _n is transmitted. The infrared rays are received by the VTR 1 and the television receiver 4, and the VTR 1 or the television receiver 4 enters an operating state corresponding to the operated operation switch.

Furthermore, when the operating switch S _c is turned on at an arbitrary time t ₁ , a pulse P _c that falls at the time t ₁ is taken out from the operating switch S _c as shown in FIG. 4A.
This pulse P _c is supplied to the differentiating circuit 21 and a falling differentiated pulse is taken out. This pulse is supplied to the monostable multivibrator 24 and output from the monostable multivibrator 24 for a period t as shown in FIG. 4B. A pulse _P1 that becomes "1" is taken out from ₁ to _t2 . Then, this pulse P ₁ is transmitted to the differentiating circuit 22
The same operation is repeated, and the monostable multivibrator 25 outputs a pulse P ₂ that becomes "1" during the period t ₂ to _{t 3} as shown in FIG. As shown in FIG. 4D, the multivibrator 26 outputs a pulse _P3 which becomes "1" during the period _t3 to _t4 .

These pulses P ₁ , P ₂ , and P ₃ are then supplied to transistors Q ₁ , Q ₂ , and _{Q 3} .
Q ₂ and Q ₃ are turned on sequentially, and at this time,
Transistors Q ₁ , Q ₂ , Q ₃ are operating switches S _p , S ₂ ,
The _transistors Q ₁ , Q ₂ ,
Since turning on Q ₃ is equivalent to turning on switches S _p , S ₂ and S _s , sequential command signals as shown in FIG. 4E are obtained. i.e. from time t ₁
A command signal E _c is obtained which puts the VTR 1 in playback mode, a command signal E _c is obtained which sets the television receiver 4 to channel 2 from time t ₂ , and further,
From time _t3 , a command signal _Ec for connecting switch 3 of VTR 1 to the VTR side is obtained. These command signals E _c are sequentially converted into modulation signals E _n and transmitted as infrared light from the infrared light emitting diode 14, so the VTR 1 is put into playback mode, the switch 3 is connected to the VTR side, and the television receiver 4 is made into two channels, so that the television receiver 4 can receive the reproduced image of the VTR 1.

In this way, the operations in items 1 to 3 above are performed using the remote control, and the user can view the playback screen of the VTR 1. In this case, the user only has to press the operation switch S _c once, and the operation is extremely simple. Moreover, since the user only needs to purchase the commander shown in FIG. 2 in place of the conventional commanders 6 and 7, the burden on the user is small. Furthermore, there is no need for any special adapter or modification of the VTR 1 or television receiver 4.

However, in such a commander for a remote control, it is necessary to provide an operation switch S _c for operating the above-mentioned control circuit outside the operation switch S _w , and furthermore, for example, a television receiver must be provided outside the above-mentioned control circuit 20. When you want to reproduce the television broadcast signal using 4, turn on the power to the television receiver 4, set the switch 3 to the antenna side, and set the television receiver 4 to the previous channel. An operation switch is required to operate this, and since there are a large number of operation switches and a large number of operation buttons, there is an inconvenience that the shape of the commander for the remote control becomes large.

In view of these points, the present invention is designed to reduce the number of operation switches and operation buttons in the above-mentioned remote control commander as much as possible.

An embodiment of the remote control commander of the present invention will be described below with reference to FIG. In FIG. 5, parts corresponding to those in FIG. 2 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In this example, the operation switch S _p for putting the VTR 1 into playback mode and the operation switch S _c for generating sequential command signals for playback of the VTR 1 are used together, and the operation button is used for television reception. The operating switch _S2 for converting the receiver 4 into two channels is also used as an operating switch for sequentially generating command signals for receiving television broadcast signals from the television receiver 4.

In Figure 5, 30P, 30S, 30A and 3
0T are automatic return operation switches 30 ₁ , 30 ₂ , 3 provided on the surface of the remote control commander, respectively.
The operation buttons configuring 0 ₃ and 30 ₄ are shown, and operation button 3
0P is used when VTR1 is simply set to playback mode and
The operation button 30S is operated when generating sequential command signals for playback of the VTR 1, and the operation button 30S is operated when simply switching the switch 3 to the VTR side.
0A is operated when supplying the audio signal from the television receiver to the speaker device, and operation button 30T is operated.
is simply operated when setting the television receiver 4 to two channels and when reproducing television broadcast signals on the television receiver 4. Further, +B indicates a power supply terminal to which positive DC voltage is supplied, and this power supply terminal +B is connected to one fixed contact a of each of the automatic return type operation switches 30 ₁ , 30 ₂ , 30 ₃ and 30 ₄ . The other fixed contacts b of each of the automatic return operation switches 30 ₁ , 30 ₂ , 30 ₃ and 30 ₄ are connected to the husband's movable contacts 31 c, 32 c, 33.
c and 34c are connected to movable contacts 31c, 32c, 33c and 34c of changeover switches 31, 32, 33 and 34, respectively, which are configured to switch in conjunction with each other. When the changeover switches 31, 32, 33, and 34 are in the normal state, the movable contacts 31c, 32c, 33c, and 34c are connected to the fixed contacts 31a, 32a, 33a, and 34a of the husband and wife, and the switch is in the auto state. When this happens, the movable contacts 31c, 32c, 33c and 34c are connected to the other fixed contacts 31b, 32b, 33b and 34b, respectively. One fixed contact 31a of this changeover switch 31 is connected to an npn type transistor via a resistor.
The collector of this transistor T ₁ is connected to the encoder 11, and _{the emitter of this transistor T 1 is} grounded. In this case, when the transistor _T1 is turned on, the encoder 11 generates a command signal _EV for setting the VTR 1 to the reproduction mode. One fixed contact 32a of the changeover switch 32 is connected through a resistor.
It is connected to the base of an npn transistor _T2 , the collector of this transistor _T2 is connected to the encoder 11, and the emitter of this transistor _T2 is grounded. In this case, when the transistor _T2 is turned on, the encoder 11 generates a command signal E _R for connecting the changeover switch 3 to the VTR side.

One fixed contact 33a of the changeover switch 33 is connected to the base of an npn transistor _T3 via a resistor, the collector of this transistor _T3 is connected to the encoder 11, and the emitter of this transistor _T3 is grounded. In this case this transistor T ₃
When turned on, the encoder 11 generates a command signal E _S for supplying the audio signal from the television receiver 4 to the speaker device. One fixed contact 34a of the changeover switch 34 is connected to the base of an npn transistor _T4 via a resistor, the collector of this transistor _T4 is connected to the encoder 11, and this transistor
Ground the emitter of _T4 . In this case, when the transistor _T4 is turned on, the encoder 11 generates a command signal _E2 for switching the channel of the television receiver 4 to the second channel.

In addition, the other fixed contact 31b of the changeover switch 31 is connected to the trigger terminal of a rising trigger type monostable monomultivibrator 35, and the output terminal Q of this monostable monomultivibrator 35 is connected to the base of the transistor _T1 via a resistor. At the same time, this output terminal Q is connected to the trigger terminal of a falling trigger type monostable mono multivibrator 36, and this monostable multivibrator 36
Connect the output terminal Q of the transistor T ₂ through the resistor.
At the same time, this output terminal Q is connected to the trigger terminal of a falling trigger type monostable multivibrator 37, and the output terminal Q of this monostable multivibrator 37 is connected to the base of the transistor _T3 through a resistor. At the same time, this output terminal Q is connected to the trigger terminal of a falling trigger type monostable multivibrator 38, and the output terminal Q of this monostable multivibrator 38 is connected to the base of an npn transistor _T5 via a resistor. At the same time, this output terminal Q is connected to the trigger terminal of a falling trigger type monostable multivibrator 39, and this monostable multivibrator 3
Connect the output terminal Q of 9 to the base of transistor T ₄ . Also, the collector of the transistor _T5 is connected to the encoder 11, and this transistor _T5
When the emitter of is grounded and this transistor _T5 is turned on, a command signal E _P is sent from this encoder 11 to turn on the power of the television receiver 4.
will occur. In this case, the monostable multivibrators 35, 36, 37, 38 and 39 are
Similar to the control circuit 20 shown in the figure, VTR 1 can be controlled by one operation.
and television receiver 4 combination device to VTR
It constitutes a control circuit 40 for setting the regeneration state of 1, and the monostable multivibrators 35, 3
The inversion periods of 6, 37, 38 and 39 are made slightly longer than the period of the unit command signal. Therefore, when the monostable multivibrator 35 is triggered, a pulse signal with a predetermined pulse width is generated from the monostable multivibrator 35, and this pulse signal is sequentially transmitted to the monostable multivibrator 36 → 37 → 38 → 39. They are delayed and transmitted as respective output signals. This means that the monostable multivibrators 36-39 operate as delay circuits for serializing the respective command signals.

This control circuit 40 operates when the movable contact 31c of the changeover switch 31 is connected to the auto side, that is, the other fixed contact 31b, and when the operating button 30P is operated to short-circuit the fixed contacts a and b, the monostable multivibrator 35 A rising pulse is supplied from the power supply terminal +B to the trigger terminal of the monostable multivibrator 35 as shown in FIG. 6A, and the output terminal Q of this monostable multivibrator 35 becomes "1" during the period t ₁ to _{t 2} as shown in FIG. 6B. , the transistor _T1 is turned on during this period.
Output terminal Q of this monostable multivibrator 35
The monostable multivibrator 36 is triggered at the rising edge of the monostable multivibrator 36.
The output terminal Q of the transistor becomes "1" during the period _t2 to _t3 as shown in FIG. 6C, and the transistor _T2 is turned on during this period. The monostable multivibrator 37 is triggered by the fall of the output terminal Q of this monostable multivibrator 36, and in the same way as described above, the output terminal Q of this monostable multivibrator 37 is
As shown in FIG. 6, it becomes "1" during the period _t3 to _t4 , the transistor _T3 is turned on during this period, and the output terminal Q of the monostable multivibrator 38 becomes "1" in the period t3 to t4.
The output terminal Q of the monostable multivibrator 39 becomes "1" during the period t ₄ to t ₅ as shown in FIG. _6F , and _the transistor T ₅ is turned on during this period. ”, and the transistor _T4 is turned on during this period.

Therefore, at this time, command signals E _V , E _R , E _S , _EP and E ₂ are obtained in sequence as shown in FIG. 6G.

In addition, the other fixed contact 34b of the changeover switch 34 is connected to the trigger terminal of a rising trigger type monostable multivibrator 41, and the output terminal Q of this monostable multivibrator 41 is connected to the base of the transistor _T5 via a resistor. At the same time, connect this output terminal Q to the trigger terminal of the falling trigger type monostable multivibrator 42,
Output terminal Q of this monostable multivibrator 42
is connected to the base of an npn transistor _T6 via a resistor, and its output terminal Q is connected to a trigger terminal of a falling trigger type monostable multivibrator 43. In this case transistor T ₆
The collector of the transistor T6 is connected to the encoder 11, and the emitter of the transistor _T6 is grounded, so that when the transistor _T6 is turned on, the encoder 1
1 to generate a command signal E _A for switching switch 3 to the antenna side. Further, the output terminal Q of the monostable multivibrator 43 is connected to the base of the transistor _T3 via a resistor, and this output terminal Q is connected to the trigger terminal of a falling trigger type monostable multivibrator 44.
Output terminal Q of this monostable multivibrator 44
is connected to the base of the npn transistor _T7 . The collector of this transistor T ₇ is connected to the encoder 11
and ground the emitter of this transistor _T7 , so that when this transistor _T7 is turned on, a command signal E _F is generated from this encoder 11 to return the channel of the television receiver 4 to the previous channel. do.

In this case the monostable multivibrator 41,4
The monostable multivibrators 41, 42, 43 and 44 constitute a control circuit 45 for bringing the television receiver 4 into the state of reproducing television broadcasts with a single operation. Each inversion period is made slightly longer than the period of a unit command signal.

This control circuit 45 operates as a monostable multivibrator when the operating button 30T is operated when the movable contact 34c of the changeover switch 34 is connected to the auto side, that is, the other fixed contact 34b, and the fixed contacts a and b are short-circuited. A rising pulse is supplied to the trigger terminal of the monostable multivibrator 41 from the power supply terminal +B as shown in _{FIG .}
Therefore, the transistor _T5 is turned on during this period.
Output terminal Q of this monostable multivibrator 41
The monostable multivibrator 42 is triggered at the rising edge of the monostable multivibrator 42.
The output terminal Q becomes "1" during the period _t2 to _t3 as shown in FIG. 7C, and the transistor _T6 is turned on during this period. The monostable multivibrator 43 is triggered by the fall of the output terminal Q of this monostable multivibrator 42, and in the same way as described above, the output terminal Q of this monostable multivibrator 43 is
As shown in FIG. 7, it becomes "1" during the period _t3 to _t4 , and the transistor _T3 is turned on during this period, and in the same way, the output terminal Q of the monostable multivibrator 44 becomes "1" in the period t3 to t4.
As shown in the figure, it becomes "1" during the period _t4 to _t5 , and the transistor _T7 is turned on during this period. Therefore, at this time, the command signals E _P , E _A , E _S as shown in FIG.
and E _F sequential command signals are obtained.

Further, the other fixed contacts 32b and 33b of each of the changeover switches 32 and 33 are placed in an electrically floating state.

Since the present invention is constructed as described above, when the changeover switches 31, 32, 33, and 34 are set to the normal state, the transistors are
T ₁ , T ₂ , T ₃ and T ₄ can each be turned on to obtain a desired single command signal.
Also, when the changeover switches 31, 32, 33 and 34 are in the auto state, the operation button 30P or 30T
With a single operation, sequential command signals as shown in FIG. 6G or FIG. 7F can be obtained. Therefore, even with the present invention as shown in FIG. 5, the same effects as in FIG. 2 can be obtained. In addition, in the present invention, when operating in the automatic state, if for some reason the channel 2 of the television receiver 4 is switched to another channel during playback of the VTR 1, etc., the changeover switches 31 and 32 are activated. , 33, and 34 are in the normal state and can be corrected by, for example, operating the operation button 30T.

Furthermore, in the present invention, the changeover switches 31, 3
2, 33, and 34 are used to switch between the normal state and the auto state and also serve as the operation buttons of the remote control commander, which has the advantage of reducing the number of operation buttons and making the shape of the remote control commander that much smaller. be.

It goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations may be adopted without departing from the gist of the present invention.

[Brief explanation of drawings]

Fig. 1 is a diagram for explaining the present invention, Fig. 2 is a configuration diagram showing an example of a commander for a remote control, Figs. 3 and 4 are diagrams for explaining Fig. 2, and Fig. 5 is a diagram for explaining the present invention.
The figure is a block diagram showing one embodiment of the remote control commander of the present invention, and FIGS. 6 and 7 are diagrams for explaining the present invention. 1 is a VTR, 3 is a switch, 4 is a television receiver, 11 is an encoder, 14 is an infrared light emitting diode, 30P, 30S, 30A and 30T are operation buttons, 31, 32, 33 and 34 are changeover switches, 40 and 45 are control circuits, respectively.

Claims (1)

[Claims for Utility Model Registration] A first switch that performs a remote control on a first device, and a first switch that performs a remote control on a second device that cooperates with the first device. 2 switches, and first and second input terminals corresponding to the first switch and the second switch, respectively,
an encoder that forms a command signal corresponding to the input signals of the first and second input terminals; and a transmitter that transmits the command signal from the encoder to the first device and the second device by infrared rays. and a third switch capable of taking normal and auto states, and when the third switch is in the normal state, a pulse-like signal obtained by operating the first or second switch is transmitted to the encoder. When the third switch is in the auto state, a pulse-like signal obtained by operating the first switch is supplied to the first input terminal of the encoder. , a delayed pulse signal obtained by delaying this pulse-like signal by a delay means for a predetermined time is supplied to the second input terminal of the encoder, thereby causing the first
A pulse-like signal obtained by operating the switch and a signal equivalent to a pulse-like signal obtained by operating the second switch are sequentially supplied to the first and second input terminals of the encoder in a predetermined order. Commander for remote control, which is characterized by what was done.