JPH0623385U - Wired remote control - Google Patents

Abstract

(57) [Abstract] [Purpose] The main body of an electronic device and a remote controller are connected by a single communication line to perform bidirectional communication data transfer and power supply of the remote controller. [Configuration] Main unit 1 built-in microcomputer 2 to driver circuit 3
A communication line 6 for transferring data to the remote controller 10 via
The transfer data from the main body 1 is displayed on the LCD display 13 via the transistor circuit Q1 of the remote controller 10 and the microcomputer 11, and the operation data of the operation switches S1 and S2 of the remote controller 10 are A / D converted from the main body 1 via the communication line 6. The rectifier circuits D1 and C1 for rectifying the high level signal on the communication line 6 or the transistor Q2 regulator circuit for forming bidirectional communication sent to the microcomputer 2 of the main body 1 through the circuit 4 are constituted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wired remote controller, and more particularly to a wired remote controller suitable for performing bidirectional communication between an electronic device body and a remote controller by a single communication line and supplying power to an electronic circuit on the remote controller side.

[0002]

[Prior art]

 Conventionally, many wired remote control devices shown in the block diagrams of FIGS. 4 and 5 have been provided. In FIG. 4, reference numeral 1 denotes an electronic device main body (hereinafter, simply referred to as a main body), and the main body 1 is an AV device such as headphones stereo operated by a wired remote control operation, or a measuring instrument used in a production line or the like. And measuring jigs.

Reference numeral 2 denotes a micro computer (hereinafter, referred to as a microcomputer) which is provided inside the main body 1 and which controls each circuit and mechanical portion of the main body 1. The microcomputer 2 is basically known as well known. It consists of CPU, ROM, RAM (not shown), output port 2a, and input port 2b. From the output port 2a, the processed data processed by the CPU is output to the data input / output terminal 5 via the resistor R1, Also, the required external data is fetched into the input port 2b.

Reference numeral 4 denotes an A / D conversion circuit. The A / D conversion circuit 4 converts input data from the data input / output terminal 5 into a digital signal and supplies the digital signal to the input port 2b of the microcomputer 2.

Reference numeral 6 is a communication line connecting the data input / output terminal 5 of the main body 1 and data input / output terminal 14 of the remote controller, 7 is a ground terminal provided in the main body 1, and the ground terminal 7 is an earth line 8. It is connected to the ground terminal 15 of the remote control. Reference numeral 9 denotes a power supply terminal provided on the main body 1. From this power supply terminal 9, a power supply _Vcc is connected to a power supply terminal 22 of the remote controller through a power supply line 21.

Reference numeral 20 denotes a remote controller. The remote controller 20 has a plurality of switches S1, S2, ... For operating the remote controller built therein, and the remote controller 20 has a transistor Q3 and resistors R4, R5, R8, R9 inside. It has a buffer circuit formed by, for example, and further incorporates the microcomputer 11. Reference numeral 12 is an output terminal for outputting processing data from the microcomputer 11, and the processing data of the microcomputer 11 is supplied to the LCD display 13 via the output terminal 12.

In the wired remote controller constructed in this way, the main body 1 and the remote controller 20 have two signal lines of the communication line 6 and the power supply line 21 (three connection lines including the earth line 8 in the figure). Shown).

The pressing operation data of the operation switches S1 and S2 of the remote controller 20 is sent to the main body 1 through the communication line 6, converted into digital data by the A / D conversion circuit 4 of the main body 1 and input to the computer 2. It is supplied to the port 2b and each part of the main body 1 is controlled by this microcomputer 2.

Data of the controlled state of the main body 1 is sent from the output port 2a of the microcomputer 2 to the remote controller 20 again via the communication line 6 and processed by the microcomputer 11 inside the remote controller 20 to perform signal processing. The setting state of can be displayed on the LCD display 13, and the two-way communication function by the communication line 6 is formed.

In this way, the operation of the main body 1 is set by using the communication line 6 by the remote controller 20, and the main body 1 is operated while confirming the setting contents on the LCD display 13 on the remote controller 20 side. Further, since the power supply _Vcc of the transistor Q3 of the buffer circuit of the remote controller 20 which drives the LCD display 13 and the microcomputer 11 is supplied from the main body 1 through the power supply line 21, the main body 1 and the remote controller 20 are connected to each other. It was necessary to connect the communication line 6 and the power supply line 21 between them.

In the block diagram of another conventional example shown in FIG. 5, reference numeral 30 denotes a remote controller, and this remote control 30 is provided by a battery 31 having a built-in power supply _Vcc such as a transistor Q3 of a buffer circuit and a microcomputer 11. It is configured to operate.

As described above, by mounting the battery 31 inside the remote controller 30, the power supply line 21 of the conventional example shown in FIG. 4 is not required, and the main body 1 and the remote controller 30 can be connected by one communication line 6. It is configured (excluding the earth line 8).

As described above, the conventional wired remote control device is configured by connecting the main body 1 and the remote control 20 with the two communication lines 6 and the power supply lines 21, or by mounting the battery 31 of the power supply on the remote control 30 side. However, the connection with the main body 1 was used only with one communication line 6.

[0014]

[Problems to be solved by the device]

 However, as described above, in the conventional wired remote controller shown in FIG. 4, the wired connection between the main body 1 and the remote controller 20 is made up of two connection lines (excluding the ground line 8), so the remote controller 20 is The two wires limit the degree of freedom, impairing portability, and at the same time reduce operability.

Further, in the conventional remote controller 30 shown in FIG. 5, the number of connection lines is reduced to one, but since the battery 31 is stored inside the remote controller 30, the outer shape of the remote controller 30 becomes large and usability deteriorates. Moreover, there is a drawback that the housing structure for storing the battery 31 becomes complicated and the cost is increased.

The present invention has been made in view of the above points, and an object thereof is to solve the drawbacks of the conventional example and to transfer data and power by one communication line (excluding the earth line 8). There is a wired remote control device for supplying.

[0017]

Means for Solving the Problems A wired remote control device of the present invention connects an electronic device main body and a remote control having an electronic circuit for signal processing of transfer data from the main body by a wire, In a wired remote control device that allows two-way communication for data transfer and operation data transfer from the remote controller using a single communication line, the above communication is performed by a driver circuit provided in the data transfer line on the main unit side. The line is set to high level for data transfer, the operation data from the remote controller is placed on the high level communication line and transferred, and the rectifier circuit that rectifies the high level signal of the transfer data is installed inside the remote controller. The rectified DC voltage is provided as a power source for the remote controller.

Further, a transistor regulator circuit may be provided instead of the rectifier circuit provided inside the remote controller, and the transistor regulator circuit may be supplied as a power source for the remote controller.

[0019]

[Action]

 According to this invention, a driver circuit that operates as an inverter is provided on the transfer line that transfers data from the output port of the microcomputer, which is the control unit on the main unit side, and the communication line is connected to the remote controller via the resistor connected in series to this driver circuit. Data transfer via.

In this way, by transferring the data of the operating state of the main body to the remote controller, this transferred data is inverted and amplified by the transistor Q1 on the remote controller side and is supplied to the microcomputer. The operating status of the main unit can be displayed on the monitor.

On the other hand, from the remote control, operation data from a plurality of operation switches provided inside the remote control is transferred to the main body through the communication line, and converted into digital data by the A / D conversion circuit of the main body. It is supplied to the microcomputer of the main body, and each part of the main body can be controlled by the control signal from this microcomputer. In this way, the main unit and the remote control are capable of bidirectional time-sharing communication via a single communication line.

The data transfer communication line is set to a high level by the driver circuit to perform bidirectional communication, and the high level communication line is supplied to the rectifier (diode D1) inside the remote controller to be rectified and The rectified signal is smoothed by C1 into a DC voltage, which is supplied to the transistor Q1 of the electronic circuit of the remote controller and the power source of the microcomputer.

In addition, instead of the rectifier, a transistor regulator circuit composed of a transistor is provided to stabilize the DC voltage component of the pulsating current signal of the high level communication line, thereby eliminating fluctuations in the power source and controlling the electronic circuit of the remote controller. It can also be used as a power source.

As described above, the main body and the remote control can simultaneously perform the bidirectional communication data transfer and the power supply to the remote control by one communication line, and the number of wires between the main body and the remote control can be minimized. The remote control mechanism can be realized by improving the operability of the remote control, and at the same time, the battery stored inside the remote control is not required, and the remote control mechanism can be simplified and downsized.

[0025]

【Example】

 An embodiment of the wired remote controller according to the present invention will be described with reference to FIGS. 1 and 3. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a block diagram, FIG. 2 is a waveform diagram showing operation waveforms of data transfer between the main body and a remote controller and power supply to an electronic circuit, and FIG. 3 uses a transistor regulator circuit of another embodiment. It is a block diagram.

In FIG. 1, reference numeral 3 denotes a driver circuit provided on a data transfer line from the microcomputer 2 of the main body 1, and the driver circuit 3 has an inverter operation function. Reference numeral 10 denotes a remote controller. This remote controller 10 has a plurality of operation switches S1 and S2 as in the conventional example, and also has a transistor Q1 and a microcomputer 11 which are electronic circuits for receiving transfer data from the main body 1 and inverting and amplifying the transferred data. Further, the rectifier circuit is formed by the diode D1 and the capacitor C1 of the rectifier connected to the data transfer line.

In the wired remote control device thus configured, the communication line 6 connecting the data input / output terminal 5 of the main body 1 and the data input / output terminal 14 of the remote controller 10 is the driver of the main body 1 when data is not transferred. The output of the circuit 3 is set to "High level", the pressing operation of the operation switches S1 and S2 of the remote controller 10 is detected, the A / D conversion circuit 4 of the main body 1 converts it into digital data, and the data is supplied to the microcomputer 2. It

Further, data transfer from the microcomputer 2 of the main body 1 is inverted and amplified by the transistor Q1 from the resistor R4 of the remote controller 10 via the driver circuit 3 and the resistor R1 and supplied to the microcomputer 11. The set operating state can be displayed on the LCD display 13.

The operation data of the operation switches S1 and S2 of the remote controller 10 and the data transfer of the main body 1 are alternately transferred in a time-sharing method, and this data transfer is performed on the communication line 6 as shown in FIG. When High level = V _DD ", the data transfer period a" is transferred by the negative data pulses 16 as shown in FIG respect High level V _DD ", the switch operation reading period B of the operation switch S1, S2 The operation signal is transferred by the data pulses 17 and 18 superimposed on the "High level V _DD " as in the above.

On the other hand, the “High level V _DD ” communication line 6 is rectified by the diode D1 and smoothed by the capacitor C1 to become a DC voltage 19 which is supplied as a power source for the transistor Q1 of the remote controller 10 and the microcomputer 11. It

In the data transfer waveform diagram of FIG. 2, the transfer data pulse 16 from the microcomputer 2 of the main body 1 in the data transfer period A of the communication line 6 of “High level V _DD ” is negative as shown in the figure. Is transmitted during each data transfer period A.

Further, when the operation switch S1 of the remote controller 10 is pressed during the switch operation reading period B formed alternately with the data transfer period A, the operation signal pulse 17 divided by the resistors R1 and R2 is displayed. As described above, it is possible to detect and read the operation signal pulse 17 that is superimposed on the “High level V _DD ” of the communication line 6 and has the voltage _dividing level of the resistors R1 and R2 of the operation switch S1 described above. When the switch S2 is pressed, the microcomputer 2 can read the pressing operation of the operation switch S2 by detecting the operation signal pulse 18 divided by the resistors R1, R2, R3.

In this way, the transfer data pulse 16 of the data transfer period A is transmitted to the communication line 6 of “High level V _DD ”, and further, the operation signal pulse 17 of the operation switches S1 and S2 is transmitted during the switch operation read period B. , 18 are transferred alternately.

On the other hand, the power supply to the transistor Q1 of the remote controller 10 and the microcomputer 11 is supplied by rectifying the “High level V _DD ” communication line 6 with the diode D1. Now, since the microcomputer 11 only drives the LCD display 13 to display, assuming that the power consumption is about 10 μA, if the resistor R1 is 4.7 kΩ, the voltage drop of the resistor R1 is Vr = 0.047V. Therefore, the voltage drop of this resistor R1 can be ignored.

That is, the rectified power supply voltage 19 of “High level V _DD ” becomes “V _DD −0.6” V. However, the above 0.6V is the forward voltage of the diode D1. When the operating switches S1 and S2 are operated and pressed for a maximum of about 10 seconds, the smoothing capacitor C1 of the rectifier circuit has the following capacitance. The power supply waveform 19 shown in FIG. 2 can be obtained by selecting and setting the capacitor C1 that satisfies T = 10 sec << CV / I = C1 (V _DD -0.6) / 10 μA.

In this way, by setting the communication line 6 to “High level V _DD ”, the data pulse 16 transfer from the microcomputer 2 and the data pulse 17, 18 etc. of the operation switches S1, S2 operation of the microcomputer 11 Transfer and power supply 19 by rectification of the diode D1 can be used for bidirectional data transfer by one communication line 6 or sending of power supply.

In the block diagram of FIG. 3 of the other embodiment, a transistor regulator circuit including a transistor Q2 and a Chener diode D2 is formed and configured in place of the rectifier circuit of FIG.

As described above, the power supply of the transistor Q1 of the remote controller 10 and the microcomputer 11 can be supplied from the high level communication line 6 with the regulator circuit of the transistor Q2 stabilizing the DC voltage component. With this regulator circuit, a more stable power supply voltage can be supplied to the microcomputer 11 and the like.

[0039]

[Effect of device]

 As described above, the wired remote control device according to the present invention sets the communication line 6 from the microcomputer 2 of the main body 1 to "High level" and performs the bidirectional communication data transfer with the microcomputer 11 as well. The power supply for the transistor Q1 of the remote controller 10 and the microcomputer 11 can be generated from the "High level" communication line 6 by the regulator circuit of the diode D1 or the transistor Q2, so that the main body 1 and the remote controller 10 have one communication line. 6 can be connected and configured (excluding the earth line 8), the operability of the remote controller 10 can be improved, and the flexibility of the operating position of the remote controller 10 and the mounting position at hand can be increased. There is.

Moreover, since the driver circuit 3 that operates as an inverter is provided on the data transfer line of the main body 1 and only the inverting transistor circuit is provided on the remote controller 10 side, the structure is simple and inexpensive. It has the excellent features of being easy to implement because it is possible.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part and an essential part of a remote controller showing an embodiment of a wired remote controller according to the present invention.

FIG. 2 is a waveform diagram showing an operation waveform of data transfer between a main body and a remote controller and an operation waveform of a power supply to a microcomputer.

FIG. 3 is a block diagram of an essential part showing another embodiment of the present invention.

FIG. 4 is a block diagram showing a conventional wired remote control device.

FIG. 5 is a block diagram of another conventional example.

[Explanation of symbols]

1 Main body of electronic equipment 2 Microcomputer (microcomputer) 3 Driver circuit 4 A / D conversion circuit 5 Data input / output terminal 6 Communication line 7 Ground terminal 8 Ground line 10 Remote control 11 Microcomputer (microcomputer) 12 Output terminal 13 LCD display 14 Remote control data input / output terminal 15 Remote control ground terminal 16 Data transfer pulse waveform from the main unit 17 Operation switch S1 operation signal pulse waveform 18 Operation switch S2 operation signal pulse waveform R1 to R7 Resistor C1 Smoothing capacitor Q1 Inverting amplifier Q2 Power supply regulator control transistor D1 diode D2 Chener diode S1, S2 operation switch V _DD High level voltage value of communication line

Claims (2)

[Scope of utility model registration request] 1. An electronic device main body and a remote controller having an electronic circuit for signal processing of transfer data from the main body are connected by a wire, and one data transfer from the main body and one operation data transfer from the remote controller are provided. In a wired remote control device capable of bidirectional communication using the time sharing method on the communication line, the driver circuit provided in the data transfer line on the main unit side sets the communication line to a high level to transfer the data. A configuration is provided in which a rectifier circuit for transferring operation data from a remote controller on a level communication line and transferring the rectified high level signal of the transfer data is provided inside the remote controller and supplying the rectified DC voltage as a power source for the remote controller. A wired remote control device characterized in that 2. The wired remote controller according to claim 1, wherein a transistor regulator circuit is provided in place of the rectifier circuit provided inside the remote controller and is supplied as a power source for the remote controller.