JPH04177663A - Remote control device - Google Patents

Abstract

PURPOSE:To prevent a malfunction due to unnecessary radiation and noise by supplying a signal corresponding to an operational input signal without encoding it when the remote operation of an instrument to be controlled is performed by wired transmission. CONSTITUTION:When wired transmission is performed, a plug 5 is connected to a connector 4, a contact piece 4b is separated, a switch 4a is turned off and a battery BATT is separated from circuits. On the other hand, a voltage is supplied to a waveform shaping circuit 11 and a sensor unit 10 from the side of an instrument to be controlled via the terminal Vcc of the plug 5 and the contact piece 4b, bar codes read by the sensor unit 10 are wave-form-shaped by the circuit 11 and fed to the instrument to be controlled via the plug 5. At this time, although the output of the circuit 11 is supplied to a microcomputer 2, electric power is not supplied to the microcomputer 2 because the switch 4a is turned off, the encoding of a transmission signal by the microcomputer 2 is not conducted and therefore a high frequency clock component is not contained. Thus, no unnecessary radiation is generated and the microcomputer 2 is inoperative even when a cord 5a collects a noise as a receiving antenna and does not conduct a malfunction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is directed to a remote controller that remotely commands operation commands indicated by key operations or barcode reading means to a controlled device such as a video disc player. Relating to a control device.

[Prior art] Controlled devices such as video disc players play, stop,
2. Description of the Related Art Remote control devices are known that have various operation modes such as search, and transmit these operation modes by remote control. Generally, such remote control devices are equipped with multiple keys for commanding operation modes, and a built-in microcomputer (microcomputer) as an encoder encodes a code suitable for the controlled device according to the user's key operations. generated and encoded commands are sent wirelessly or wired to the controlled device.

FIG. 7 shows an example of such a remote control device. In the figure, a key 1 is operated by a user, and a microcomputer 2 encodes the key in accordance with the operated key to generate a command suitable for a controlled device such as a video disc player. A crystal oscillator 3 that generates a clock for signal processing is connected to the microcomputer 2. The command generated by microcomputer 2 is connected to resistor R4.
is input to the base of transistor Q1 via
A light emitting diode D1 connected to the collector of the transistor Q1 emits infrared light in response to a command. This infrared light is transmitted wirelessly to the controlled device.

On the other hand, in order to make a wired connection between the remote control device and the controlled device, a connector 4 is provided to which a plug 5 of the controlled device is connected.

The command sent from the microcomputer 2 is given to the base of the amplification transistor Q2 via the resistor R3, and the collector output of the transistor Q2 is connected to the coupling capacitor C1.
The signal is supplied to the signal input terminal SIG of the plug 5 via the signal input terminal SIG.

The output of this input terminal SIG is transmitted to the controlled device by wire. Note that the resistors R1 and R2 are voltage dividing resistors.

The power supplied to the microcomputer 2, light emitting diode D1, etc. is supplied to the battery BAT via the switch 4a of the connector 4 (which is on at this time) when the plug 5 is not connected.
Supplied from T. Further, when the plug 5 is connected, the switch 4a is turned off, and power is supplied from the controlled device via the power terminal Vcc of the plug 5 and the contact piece 4b. The plug 5 is provided with a ground terminal GND in addition to the power supply terminal Vcc and signal input terminal SIG described above, and each terminal is insulated with an insulating material.

In addition to the above-mentioned key 1, a sensor section that reads the printed barcode pattern and a waveform shaping section that shapes the waveform of the output of the sensor section are provided, and the waveform-shaped barcode pattern is encoded by the microcomputer 2. It is also possible to use a barcode remote control that converts into commands.

[Problems to be Solved by the Invention] However, when the remote control device and the controlled device are connected by wire using the connection cord 5a, the clock component for operating the microcomputer 2 is radiated using the connection cord 5a as a transmitting antenna, etc. There is a possibility that the external equipment may malfunction.

In addition, in a noisy environment, the connection cord 5a acts as a receiving ε antenna, and the noise is transmitted to the connection cord 5a.
There is a risk that the microcomputer 2 may malfunction.

The present invention was made in view of this situation, and
An object of the present invention is to provide a remote control device that can prevent malfunctions due to electromagnetic radiation or noise even when the remote control device is connected to a controlled device by wire.

[Means for Solving the Problems] The remote control device of the present invention is a remote control device that sends a command to a controlled device by wire or wirelessly in response to an operation input signal input by key operation or barcode reading means. an encoding means for generating a command according to an operation input signal; a wireless supply means for wirelessly supplying the output of the encoding means to a controlled device; and a wireless supply means for wirelessly supplying the output of the encoding means to a controlled device; The present invention is characterized by comprising a wired supply means for supplying wired supply to the controlled equipment.

[Function] In the remote control device having the above configuration, when the remote control device and the controlled device are connected by wire, the signal corresponding to the operation input signal is transmitted to the controlled device without going through an encoding means. . Therefore,
Unnecessary radiation and malfunctions are prevented.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the remote control device of the present invention, particularly for explaining a barcode remote control, and parts corresponding to those in the conventional case are given the same reference numerals. The explanation will be omitted as appropriate.

When performing wireless transmission, the plug 5 cannot be fully connected to the connector 4. At this time, the switch 4a is connected to the contact piece 4.
Turn on via b. This allows the power switch SWI
When turned on, the output voltage of the battery BATT is supplied to the light emitting diode D1 and the microcomputer 2 via the switch 4a and the switch SWI. Further, when the switch SW2 is turned on to read the barcode, the waveform shaping circuit 11
Then, power is supplied to the sensor section 10. The sensor unit 1o as a barcode reading means includes a light emitting unit (light emitting diode) 1o1 that emits light upon receiving power supply, and a light receiving unit (phototransistor) 102 that receives light reflected from the barcode printed pattern surface. The output of the light receiving section 102 is waveform-shaped by the waveform shaping circuit 11 into a pulse-like waveform.

That is, light from the light emitting unit 101 is irradiated as a scan spot onto a barcode printing pattern as shown in FIG. 3(A). Light receiving unit 102 that receives this reflected light
The output has a waveform as shown in FIG. 5(B), and this waveform is changed by the waveform shaping circuit 11 into a pulse-like waveform as shown in FIG. 4(C).

This pulse-like waveform is supplied to the microcomputer 2 as an encoder, encoded, and stored.

The command generated in microcomputer 2 is sent to switch SW3.
When operated, the light is supplied to the light emitting diode DI (wired supply means) via the transistor Q1 and output wirelessly.

On the other hand, when performing wired transmission, the plug 5 is connected to the connector 4. At this time, since the contact piece 4b separates from the switch 4a, the switch 4a is turned off. This results in
Battery BATT is separated from each circuit. Instead, a voltage supplied from the controlled device side is applied to the waveform shaping circuit 11 and the sensor unit 10 via the terminal Vcc of the plug 5 and the contact piece 4b of the connector 4. As a result, the light emitting part I
C) 1 emits light regardless of the operation of switches SWI and SW2.

When reading is performed in the same manner as in the case described above, the waveform shaping circuit 1
1 outputs a pulse waveform signal. This signal is supplied to the microcomputer 2, but since the switch 4a is off, no power is supplied and the microcomputer 2 is in a non-operating state. Therefore, no encoded output is generated.

Instead, the output of the waveform shaping circuit 11 is
The signal is supplied to the controlled device via the terminal SIG (wired supply means) of the plug 5, the terminal SIG of the plug 5, and the connection cord 5a. The signal transmitted via the connection cord 5a at this time is not encoded by the microcomputer 2, and therefore does not include a high frequency clock component. Therefore,
There is no risk of unnecessary radiation occurring. Further, even if the connection cord 5a functions as a receiving antenna at this time and picks up noise, the microcomputer 2 is in a non-operating state, so there is no risk of malfunction.

FIG. 2 is a diagram showing the appearance of the barcode remote controller in FIG. 1, with (A) being a side view and (B) being a view from the rear. As shown in the same figure (A), a sensor part 1o is formed at the tip part, and a switch SW is formed in the body part.
I to SW3 are provided. And the same figure (
As shown in B), a light emitting window 20. which transmits the light emitting output of the light emitting diode D1. and a connector 4 are provided.

In addition, the sensor section 10. Since the waveform shaping circuit 11 can be operated at all times by the power supplied from the power supply terminal Vcc without operating the switch SW2, the operability can be improved. At this time, since the power supplied from the controlled device side is used instead of the internal power supply, there is no consumption of the internal power supply.

Here, the signal whose waveform has been shaped by the waveform shaping circuit 11 is not encoded and is supplied as is to the signal input terminal SIG of the plug 5, so a decoder is required on the controlled device side to decode this signal into a command. becomes.

FIG. 4 shows an embodiment of a signal processing device on the controlled equipment side. That is, in order to receive the signal from the remote control device by wire, a connector 40 to which the connection cord 5a is connected is also provided on the controlled device side. Since the remote control signal supplied from the connector 40 is a non-encoded signal as described above, the decoder 41 recognizes this as a command desired by the user and supplies it to the processing circuit 44 that controls the operation of the player. It is provided. On the other hand, a light receiving section 4 for wirelessly receiving signals from a remote control device.
2 is provided, and the received light output is demodulated by a demodulation circuit 43 and provided to a processing circuit 44.

FIG. 5 is a circuit diagram for explaining another embodiment of the present invention.

In this embodiment, both barcode input and key operation input can be used.

That is, the key 1 is constituted by a switch provided between the common connection point of each of the series resistors R50 to R53 to which power is supplied from either the battery BATT or the power supply terminal Vcc of the plug 5 and the ground. Of course, the number of resistors and the number of switches are arbitrary, but in order to simplify the explanation, an example using three switches is shown in this example.

Since the series resistors R50 to R53 act as voltage dividing resistors, turning on any switch in the key 1 changes the voltage appearing at the common connection point of the resistors R50 and R51, and this voltage is applied to the microcomputer 2 and the connector. 4 and becomes an operation input signal.

In addition to the signal output terminals in the embodiment shown in FIG. 1, the connector 4 is provided with signal output terminals 5IG2 for deriving the voltage appearing at the common connection point of the resistors R50 and R51 when the key 1 is operated. Correspondingly, a second signal input terminal 5IG2 is also formed on the plug 5. In addition, in the figure, the signal input terminal SIG in FIG. 1 is expressed as 5IGI for convenience.

FIG. 6 shows an example of a signal processing device on the controlled device side when the remote control device of FIG. 5 is used. In other words, the connector 40 in the case of wired connection is roughly composed of two connectors 401 and 402 in order to receive the signals supplied from the signal input terminals 5IGI and 5IG2, respectively, and the signals obtained from each connector are The signals are supplied to decoders 411 and 412.

In this way, the processing circuit 44 can be controlled even if the remote control device transmits an operation input signal via a bar code or a key operation input via a wire.

[Effects of the Invention] As described above, according to the remote control device of the present invention, when remotely controlling a controlled device using a wire, a signal corresponding to an operation input signal is transmitted to the controlled device without being encoded. Since the clock component for operating the encoding means is not radiated from the connection cord, it is also possible to prevent malfunction of the encoding means due to external noise components.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the remote control device of the present invention, FIG. 2 is a diagram showing the external appearance of a barcode remote control, and FIG. 3 is a waveform diagram showing the principle of barcode reading operation. FIG. 4 is a block diagram showing the configuration of one embodiment of the signal processing device on the controlled equipment side when the remote control device of FIG. 1 is used, and FIG. 5 is another embodiment of the remote control device of the present invention. A circuit diagram showing the configuration of
FIG. 6 is a block diagram showing the configuration of an embodiment of a signal processing device on the controlled device side when the remote control device of FIG. 5 is used, and FIG. 7 shows the configuration of an example of a conventional remote control device. It is a circuit diagram. 1...Key, 2...Microcomputer (encoding means),
3...Crystal oscillator, 4...Connector, 5...
・Plug, 11... Waveform shaping circuit.

Claims (1)

[Scope of Claims] A remote control device that sends a command to a controlled device by wire or wirelessly in response to an operation input signal input by a key operation or a barcode reading means, the remote control device transmitting a command in response to an operation input signal input by a key operation or a barcode reading means to a controlled device. encoding means for generating a command; wireless supply means for wirelessly supplying the output of the encoding means to the controlled device; and wireless supplying means for wirelessly supplying the output of the encoding means to the controlled device; A remote control device comprising a wired supply means for supplying to a control device.