JPS637512B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device with a hand-operated function that can turn on an operated device by turning on the main switch of the operated device.

1 to 8 show an example of the configuration of a remote control transmission device, a remote control transmission method, and a circuit example of a transmitter/receiver, respectively, to which the present invention can be applied. In the configuration example shown in FIG. 1, an example is shown in which a transmitter 10 and a receiver 6 for an M channel and an N channel are provided in pairs for each channel, and these are connected to a commercial power line 12, 11, the corresponding operated device 13 of the receiver 6 is turned on. That is, when the push button 11 is operated at the timing shown in FIG. 2b for the commercial power waveform on the commercial power line 12 as shown in FIG. 2a, a high frequency signal as shown in FIG. The high frequency signal shown in c in the same figure is superimposed on the receiver 6 that is paired with the transmitter 10, and the start pulse SP indicating the start of signal transmission as shown in d in the same figure. Specified channel data ChD and control data indicating the content of controlling the operated device 13 in the receiver 6
In this signal transmission method, the start pulse SP is the one with a wide pulse width, and the one with a high frequency signal in the right half of the commercial power supply waveform during each half cycle period is "0". , if there is a high frequency signal in the left half, it is defined as "1". Thus, as shown in FIG. 3, the transmitter 10 and receiver 6 as described above are mainly composed of microprocessors (hereinafter referred to as CPU) 14, 14, and a channel setter 15 composed of a depth switch and the like. ,15 outputs to CPU1
By inputting to channel input terminals 4 and 14, channel settings are performed in correspondence with each other.
Therefore, in this circuit of Fig. 3, the CPU14,
14 inputs the commercial frequency clocks output from commercial frequency clock detection circuits 16 and 16 and operates in synchronization with each other. When the push button 11 is operated and transmission data is output from the CPU 14 on the transmitter 10 side, this The high frequency signal inputted to the high frequency oscillation circuit 17 and oscillated is transmitted to the commercial power line 1 via the coupling circuit 18.
It is superimposed on 2. On the other hand, in the receiver 6, this is taken out via the coupling circuit 18, amplified by the received signal amplification circuit 19, and inputted to the CPU 14, and the CPU 14 knows that this received signal is for its own channel. , a control output is generated based on the content of the control data, and an output element such as the output relay 20 is actuated. Note that on the transmitter 10 side
The reception signal to the CPU 14 is used to check that no signal is being transmitted on other channels and to check whether the high frequency signal has been sent out normally, and the hand switch input section on the receiver 6 side is This is a part related to the main part of the present invention which will be described later, and when an "H" signal is input to this hand switch input part, it becomes possible to operate the output element even without a signal from the transmitter 10 side.

For example, when operating the operated device 13 by remote control using the above-mentioned remote control system, the present invention can be operated in conjunction with the operation of the main switch 2 on the operated device 13 side using the function of the hand switch input section. This invention relates to a remote control device with a hand-operated function that allows easy hand-operated operation.The remote-control system used in the present invention is not only the one using the power line transmission method described above, but also the multiplex transmission method in which signals are carried on a dedicated line. Alternatively, a one-to-one wired or wireless remote control method without multiplexing may be used.

Thus, in the case of a remote control device with a hand-operated function having the above-mentioned functions, the load outlet 21 to which the controlled device 13 is connected, as shown in FIG.
A relay contact 5 is connected in series with the receiver 6, and this relay contact 5 is turned on by the output relay 20 operated by the receiver 6 output. When the relay is turned off, the voltage across the relay contact 5 is rectified and smoothed by a rectifying and smoothing circuit 7 and inputted to the hand switch input section, so that the output relay 20 is activated regardless of the received signal. That is, when the main switch 2 on the operated device 13 side is turned on and off as shown in FIG. 5a, first the relay contact 5 is turned off as shown in FIG. 5d, and the main switch 2 is turned off. In this case, no signal is generated at the connection point (point A) between the load outlet 21 and the relay contact 5, as shown in b in the same figure, and therefore, the signal is not generated at the connection point (point A) between the load outlet 21 and the relay contact 5, as shown in c in the figure. ) also has no input signal, and relay contact 5 remains off. Next, turn on main switch 2 (a) in the same figure.
When turned on as shown in the figure, a signal as shown in b in the figure is generated at point A, and an "H" signal as shown in c in the figure is generated at point B, which is rectified and smoothed. , As a result, the hand switch function in the receiver 6 causes the output relay 20 to be activated as shown in d of the same figure.
is activated, and relay contact 5 is turned on. In this way, with this remote control device, even if there is no received signal in the receiver 6 and the relay contact 5 is off, when the main switch 2 is turned on, the relay contact 5 is also turned on, making it easy to turn on the hand switch. functions, and remote control from the transmitter 10 is also possible. However, among the operated devices 13 connected to the load outlet 21, as shown in FIG.
There are devices in which impedance elements such as a noise prevention capacitor 3 and a preheating circuit 4 are connected in parallel to a series circuit between the device body and the main switch 2.
Therefore, when such an operated device 13 is connected to the load outlet 21, a signal waveform is generated at the point A regardless of whether the main switch 2 is on or off, and this is rectified and smoothed by the rectification and smoothing circuit 7. Even when the main switch 2 is off, the point B goes to the "H" level and the relay contact 5 is turned on, making it virtually impossible to obtain the function of a hand switch.

The present invention has been provided in view of the above-mentioned points, and enables a reliable hand switch function to be obtained even in a device having an impedance element closer to the power source than the main switch of the operated device. It is an object of the present invention to provide a remote control device with a hand-operated function that does not interfere with remote control functions.

An embodiment of the present invention will be described in detail below with reference to the drawings.
FIG. 7 shows a block diagram of an embodiment of the present invention, in which the signal at point A is rectified and smoothed by the rectification and smoothing circuit 7, the change is detected by the change detection circuit 8, and the disconnection circuit 9 is turned. The disconnection circuit 9 generates a constant width pulse by a signal detected by the detection circuit 22 to turn off the output relay 20 or to turn on the power to the receiver 6. The output circuit 23 is activated, and the output of the constant width pulse output circuit 23 is used to activate the disconnection circuit 9, which causes the output relay 20 to be activated.
The input of the output of the change detection circuit 8 to the receiver 6 is cut off for a certain period of time during the off control or when the power is turned on, thereby preventing malfunction. FIG. 8 shows a specific circuit example of the main part _{of the circuit} shown _in FIG.
In Tr ₁ , the disconnection circuit 9 is composed of a transistor Tr ₃ , respectively.

FIG. 9 shows a time chart of the circuit shown in FIG. Now main switch 2 and relay contact 5
Suppose that is off and a TV with a noise prevention capacitor is connected to the load outlet 21.
When the power supply circuit of the load outlet 21 itself is turned on at time _t1 with respect to the on/off state of the relay contact 5 shown in FIG. Therefore, the emitter input voltage VE of the transistor Tr ₁ obtained by integrating this voltage with the resistor R ₁ and the capacitor C ₁ , and the base input voltage VB of the transistor Tr ₁ obtained by further integrating this voltage VE with the resistor R ₂ and the capacitor C ₂ are as follows.
The signals are as shown in the solid line and broken line in Figure c, and the signal is between the emitter and base of transistor Tr ₁ (VE-VB).
A voltage as shown in the figure d is applied to the transistor _Tr1 , and an output signal as shown in the figure e is generated at the collector of the transistor Tr1.

However _, when the power is turned on, as shown in _FIG . This transistor _Tr3 is short-circuited to ground, and there is no input signal at the hand switch input section as shown in figure g. Here, even though the main switch 2 is off, the waveform output is generated on the voltage Vin because the sensitivity current This is because the noise prevention capacitor 3 is set high, and while the noise prevention capacitor 3 is normally 0.1 to 0.05μ, the component when the fluorescent lamp is turned off is
This is because the sensitivity of the detection current is set to be higher than the current generated by the noise prevention capacitor 3 since it is 0.01 μF or less. Next, when main switch 2 is turned on at time t ₂ , the amplitude of voltage Vin increases as shown in b in the figure, voltage VE becomes higher than voltage VB again as in c in the figure, and as shown in d in the figure. A signal component of VE-VB is generated, and a voltage signal Vc as shown in FIG. However, at this time, as shown in the figure f, no output is generated in the constant width pulse output circuit 23, so the voltage signal Vc is input as is to the hand switch input section as shown in the figure g, and at time t ₃
At _t3 , the relay contact 5 is turned on, and the television main body 1 is energized. After this, at time t ₄ , relay contact 5 is connected by remote control operation from the transmitter 10 side.
is turned off, the voltage signals Vin, VB, VE, VE−VB, and Vc are generated as in the case of time _t1 , but at this time, the time width TOFF is disconnected from the constant width pulse output circuit 23. Since the pulse is output, no signal is input to the hand switch input section of the receiver 6, and the relay contact 5 is maintained in the OFF state.

FIG. 10 shows a detection circuit 22 and a constant width pulse output circuit 23 for obtaining the above-mentioned disconnection pulse. The constant width pulse output circuit 23 is composed of a monostable multivibrator 27 whose trigger input is the output of the OR circuit 26, and as described above, when the power is turned on and when controlling the relay contact 5 to turn off. It is designed to generate an output pulse with a constant time width TOFF.

11 and 12 show different configuration examples of the change detection circuit 8, and in the case of the circuit in FIG. 11, transistors Tr ₁ and Tr ₂ are used to obtain the same functional operation as the circuit in FIG. 8. In the case of the circuit shown in FIG. 12, the comparator 28 is used to obtain the same functional operation as the circuit shown in FIG.

As described above, the present invention inputs the voltage across a switch element for on/off control of an operated device by a remote controller into a rectifying and smoothing circuit, and transmits the output of this rectifying and smoothing circuit to a receiver via a change detection circuit. Since it is input to the hand switch input section of the main switch, even when an operated device with an impedance element connected in parallel to the series circuit between the main switch and the main switch is connected, the main switch cannot be turned on or off. The device can be clearly distinguished and detected, and even if the remote control is not operated, the operated device can be easily turned on by simply turning on the main switch, providing the functionality of an easy-to-operate hand switch. Moreover, the output of the change detection circuit is inputted to the receiver's hand switch input section via the disconnection circuit, so when the power is turned on or the switch element is turned off by remote control operation, etc. This has the effect of preventing malfunctions.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of the configuration of a remote control system to which the present invention is applied, FIG. 2 is an explanatory diagram of signal transmission in the same manner, FIG. The figure is a circuit diagram of a conventional example, Figure 5 is a time chart of the same as above, Figure 6 is an example circuit diagram of an operated device having an impedance element on the power supply side than the main switch, and Figure 7 is a circuit diagram of an embodiment of the present invention. A block diagram, FIG. 8 is a specific circuit example diagram of the same as above, FIG. 9 is a time chart of same as above, FIG. 10 is a specific circuit diagram of the same as above detection circuit, and FIGS. 11 and 12 are variation detection of the present invention. This is another configuration example diagram of the circuit, where 1 is the TV body, 2 is the main switch, 3 is the noise prevention capacitor, 4 is the preheating circuit, 5 is the relay contact, 6 is the receiver, 7 is the rectifier smoothing circuit, and 8 is the change minute detection circuit,
9 is a disconnection circuit.

Claims (1)

[Claims] 1 Connect an impedance element such as a noise prevention capacitor or preheating circuit in parallel to the series circuit between the main switch and the main switch, and connect this in series to a switch element such as a relay contact to receive the remote control signal. A remote control device with a hand-operated function that turns on and off the switch element according to the output of the switch includes a rectifier and smoothing circuit that rectifies and smoothes the voltage across the switch element, and a change that detects a change in the output of the rectifier and smoother circuit. a minute detection circuit, and a disconnection circuit that cuts off the input of the change detection circuit output to the hand switch input section of the receiver for a certain period of time when the power is turned on and when the switch element is turned off. A remote control device with a hand-operated function.