JP2538093Y2 - Remote control receiving system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a remote control receiving system for a device that can be remotely controlled by one remote control transmitter.

(Prior Art) FIG. 6 shows an example of an electrical configuration of a conventional remote control receiving system in a device that can be remotely controlled by a remote control transmitter (hereinafter, referred to as a remote control transmitter).

In FIG. 1, reference numeral 1 denotes a remote control transmitter for transmitting a control signal, reference numeral 2 denotes a remote control receiving unit (hereinafter, referred to as a remote control receiving unit), and a decoding circuit for combining received signals. In a device that can be remotely controlled by the remote control transmitter 1, the remote control receiver 2 is usually mounted on the front surface of the device main body 10 so as to most easily receive a transmission signal from the remote control transmitter 1. However, even if the remote control transmitter 1 is mounted on the front surface of the device main body 10, the strength and directivity of the remote control
In some cases, remote control by the remote control transmitter 1 cannot be performed due to the sensitivity or the like.

Therefore, separately from the remote control receiver 2 provided in the device main body 10, a transmission signal sent from the remote control transmitter 1 by the remote control receiving system is received and transmitted to the decoding circuit 3 in the device main body 10. Devices employing such a method have been proposed.

(Problem to be Solved by the Invention) However, in the device having the above configuration, a remote control receiving system is provided separately from the remote control receiving unit 2 provided in the device main body 10, so that the system becomes a very large-scale system. However, there is a problem that the manufacturing cost is increased.

An object of the present invention is to provide a remote control receiving system that can expand the range of use of one remote control transmitter with a simple configuration and can reliably perform remote control by the remote control transmitter. is there.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a remote control receiving system for a device that can be remotely controlled by one remote control transmitter. A main remote control receiving unit that receives a signal transmitted from the main remote control receiving unit, an OR circuit that outputs a signal based on the signal received by the main remote control receiving unit and other input signals, and a signal output from the OR circuit. A decoding circuit for decoding and generating a control signal for controlling the device main body; and a separate remote control receiving unit for receiving a signal transmitted from the remote control transmitter is provided separately from the device main body. To be movable with respect to the secondary remote control Shin part,
In this configuration, a received signal is input to the OR circuit through a predetermined signal line.

(Operation) Therefore, when the signal transmitted from the remote control transmitter is received by the main remote control receiver provided in the device main body, a signal based on the received signal is output from the OR circuit, and the output signal is output. The control circuit for controlling the device main body is generated by decoding by the decoding circuit, and the signal transmitted from the same remote control transmitter as described above is transmitted by the sub remote control receiving unit provided separately from the device main body. When received, the received signal is input to an OR circuit provided in the device main body through a predetermined signal line, and a signal output from the OR circuit is decoded by a decoding circuit based on the input signal, thereby decoding the device. By generating control signals to control the main unit, the main remote control The signal from the remote control transmitter, which is received by the sub remote control receiving unit provided separately from the receiving unit and the device main body, can be decoded by using a single decoding circuit.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an electrical configuration of the remote control receiving system of the present invention.

In FIG. 1, a main remote control receiver 4 for receiving a signal from the remote control transmitter 1 is provided on the front of the main body 10 of the device.
The diode D ₁ is connected to the cathode of one diode D ₁ , and the anode of the diode D ₁ is connected to the power supply voltage V _CC via the pull-up resistor 5 and to the input of the decoding circuit 3. . Another diode D ₂ of the cathode constituting the OR circuit is connected to the cathode of the diode D _1, the anode is provided on the front surface of the apparatus body 10 (not necessarily in front.) Connected to the connector section 8a.

On the other hand, each terminal of the sub remote control receiving unit 7 is connected to a connector 8b provided on the rear surface (not necessarily the rear surface) of the housing 11 that stores the sub remote control receiving unit 7, and 10 connector section 8a and housing 11 connector section
8b is detachably connected via a communication line 12.
Such a sub-remote control receiver 7 may be installed in a related device such as a separate speaker unit connected to audio equipment, or in a room clock or a storage room that is completely unrelated to the audio equipment. Conceivable.

That is, conventionally, the remote control transmitter 1 could be used only in the vicinity of the device main body 10, which is within the reach of the signal. However, as in the present invention, the sub remote control receiver 7 can be moved separately from the device main body 10. With the provision, the use range of the remote control transmitter 1, that is, the receivable range is expanded.

The main remote controller receiving unit 4 and the sub remote controller receiving unit 7
Both have the same configuration, and an example of the circuit configuration is shown in FIG.

That is, the main remote control receiving unit 4 and the sub remote control receiving unit 7 of the present invention receive the signal (usually infrared light) transmitted from the remote control transmitter 1 and the output of the light receiving sensor 21. It comprises an amplification / shaping circuit 22 for amplifying appropriately, and a transistor Q whose output is connected to the base. And the transistor Q
The emitter of the ground, the collector is connected to the power supply voltage V _CC through a pull-up resistor 23, the cathode of the diode D ₁ is in the configurations connected to the collector.

That is, when the signal from the remote control transmitter 1 is not input to the light receiving sensor 21, the transistor Q is in the OFF state, so that the diodes D ₁ and D ₂ are both in a non-conductive state. Is input to at least one of the light receiving sensors 21 of the main remote control receiving unit 4 or the sub remote control receiving unit 7, the transistor Q corresponding thereto is turned on, so that the diode connected to the collector of the transistor Q Will be conducted.

Since the pull-up resistor 5 is connected between the anode and the power source voltage V _CC of the diode D _1, the pull-up resistor 23 connected to the collector of the transistor Q is not necessarily required.

Next, the operation of the remote control receiving system having the above configuration will be described.

When the control signal from the remote control transmitter 1 is not input to the light receiving sensor 21, the transistors Q of the main remote control receiving unit 4 and the sub remote control receiving unit 7 are in the OFF state. diodes D ₁ and D ₂ are both non-conductive state. As a result,
A voltage substantially equal to the power supply voltage V _CC is applied to the decoding circuit 3, and accordingly, the input of the decoding circuit 3 becomes “H”.
Will be kept at the level.

In this state, when a control signal from the remote controller transmitter 1 is input to at least one light receiving sensor 21 of the main remote controller receiver 4 or the sub remote controller receiver 7, the corresponding transistor Q is turned on. Diode D ₁ (or connected to the collector of transistor Q)
D ₂ ) conducts. As a result, the voltage applied to the decoding circuit 3 flows to the ground via the diode D ₁ (or D ₂ ) and the transistor Q.
Changes to the “L” level. That is, the signal from the remote control transmitter 1 is taken into the decoding circuit 3.

In the above embodiment, the main remote controller receiving unit 4 and the sub remote controller receiving unit 7 are configured by the light receiving sensor 21, the amplification molding circuit 22, and the common emitter transistor Q. However, as another configuration, a phototransistor or a photodiode is used. Etc. can be used.

Further, in the above embodiment, it is assumed that the OR circuit comprising a diode as 2 input terminals, the sub remote control receiver 7, the connector 8a, 8b, a plurality of simple receiver unit comprising a communication line 12 and the diode D ₂ Provided, each diode D ₂ , D ₂
By connecting the anode of
It is possible to provide a system having a plurality of light receiving units.

3 and 4 show another embodiment of the remote control receiving system of the present invention.

That is, in the receiving system shown in FIG. 3, an indicator 21 for confirming the operation state of the device main body 10 is connected to the output of the sub remote controller receiving unit 71, and these are integrally housed in the housing 11. is there. That is, when the transmission signal sent from the remote control receiver 1 is received by the sub remote controller receiving unit 71 stored in the storage unit 11, the indicator 21 stored in the same storage unit 11 operates. It was done.

Reference numeral 51 is an OR circuit constituted by diodes D ₁ and D ₂ as shown in Figure 1. Other configurations are the same as those of the above-described embodiment.

In the receiving system shown in FIG. 4, the output of the decoding circuit 3 provided in the device main body 10 is connected to the connector section 81 provided in the device main body 10, while the operation state of the device main body 10 is checked. For this purpose, an indicator 21 is provided in the housing 11, an input of the indicator 21 is connected to a connector 81 b provided in the housing 11, and the connectors 81 a and 81 b are connected by a signal line 121.

That is, irrespective of the receiving unit, when the transmission signal transmitted from the remote control transmitter 1 is received, all the indicators 21 provided in the device body 10 and the storage body 11 (however, the device body 10 (The indicator on the side is not shown). Other configurations are the same as those shown in FIG. 3, and therefore, the same reference numerals are given here and the description is omitted.

The receiving system shown in FIG. 5 shows an application example of the remote control receiving system of the present invention. An indicator 21 for confirming the operation state of the device main body 10 is connected via a decoding circuit 31. Are integrally stored in the storage body 11.

That is, in the sub remote controller receiving unit 71, the indicator 21 operates only when a signal receivable by the decoding circuit 3 in the device main body 11 is received, and when the other signal is received, the indicator 21 operates. This is a configuration not to perform.

In any case, the configuration shown in FIGS. 3 to 5 allows the operation of the device main body 10 to be checked even when the device main body 10 is installed in a place where the operator cannot directly see it. Therefore, the operator can determine whether or not the device main body has actually operated when operating the remote control transmitter, and can eliminate anxiety accompanying the operation.

(Effects of the Invention) As described above, according to the present invention, the remote control received by the main remote control receiving unit provided in the device main body and the sub remote control receiving unit provided separately from the device main body, respectively. Since the signal from the transmitter can be decoded by using a single decoding circuit, the circuit can be simplified, and the device can be provided by movably providing the sub remote control receiving unit with respect to the device body. The sub remote control receiver can be installed in a place not close to the main body, and accordingly, the range of use of one remote control transmitter can be expanded.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a remote control receiving system of the present invention, FIG. 2 is a block diagram showing more specific electrical configurations of a main remote control receiving section and a sub remote control receiving section, 3 to 5 are block diagrams showing another embodiment of the remote control receiving system according to the present invention, and FIG. 6 is a block diagram showing an electrical configuration of the conventional remote control receiving system. 1 ... remote control transmitter 3 ... decoding circuit 4 ... main remote control receiver 7 ... sub remote control receiver 8 ... connector unit D _1, D ₂ ... diodes

Claims (1)

(57) [Scope of request for utility model registration] 1. A remote control receiving system for a device which can be remotely controlled by one remote control transmitter, comprising: a main remote control receiving unit for receiving a signal transmitted from the remote control transmitter in a device main body; An OR circuit that outputs a signal based on a signal received by the main remote control receiving unit and other input signals, a decode circuit that decodes a signal output from the OR circuit and generates a control signal that controls a device main body, On the other hand, separately from the device main body, a sub remote control receiving unit that receives a signal transmitted from the remote control transmitter is provided so as to be movable with respect to the device main body, and the sub remote control receiving unit is OR the received signal through a predetermined signal line. Remote control receiving system is characterized in that a structure to be input to the road.