KR940007551B1 - Two-way infrared-rays remote controlling apparatus - Google Patents

Abstract

The acknowledge signal generated by multi-receivers are received by an infra-red ray bi-directional remote controller and are displayed on a panel of the controller. The system includes a transmitter (10) comprising a transmitter for transmitting control data to controlled systems, and a receiver for receiving acknowledge signal transmitted from the controlled systems, and controlled systems (20) having a transmitter to send data requested by a transmitter (10).

Description

2-way infrared remote control device and method

1 is a block diagram of a conventional one-way infrared remote control device.

2 is a block diagram of a two-way infrared remote control device of the present invention.

3 is a and b is a signal flow diagram showing a two-way infrared remote control method of the present invention.

4 is a two-way remote control in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: transmitter 20: receiver

11, 29: infrared transmitter 12, 22: central processing unit

13, 23: program ROM 14, 24: RAM

15: key input unit 16, 26: clock generator

25: operation port 17: display driver

18: display unit 19, 21: infrared receiver

The present invention relates to an infrared remote control device, and in particular, a method of transmitting unidirectional control information from a transmitter (remote control) to a receiver sends a confirmation command and a confirmation item from the transmitter to the receiver, and the receiver receives confirmation of the confirmation command. In order to send the signal to the transmitter and the user implements an apparatus for confirming the reception state through the display unit of the transmitter, the receiver controls a plurality of receivers with one transmitter (remote control) without a separate display driver and display unit for checking the operation state. The present invention relates to a two-way infrared remote control apparatus and method for bi-directional remote control of a plurality of receivers by one transmitter by allowing the reception state of each receiver to be displayed only through a display device placed on the transmitter.

Conventional one-way infrared remote control device, as shown in Figure 1, as a means for infrared remote control to make a 3KHz broadcast wave of the ultrasonic band using an infrared medium of wavelength (λ), λ = 970nM and infrared light emitting diode ( A transmission unit 10 which transmits control information as intermittent (on / off) time information of a carrier through an LED), and transmits a control command inputted to the transmission unit 10 to an operation port 25 to perform a transmission operation; At the same time it is composed of a receiving unit 20 to inform the user by displaying the operation state or the changed content.

In configuring each unit as described above, the transmitting unit 10 operates according to the system clock output from the clock generating unit 16 to control the overall operation, and transmits a data line for executing the program. A program ROM 13 for storing all data required for the program, a RAM 14 for storing temporary data when the data is sent to a receiving unit, and a user to issue a control command as a key to perform an operation necessary for transmission. It consists of a key input section 15 and an infrared transmitting section 11 which carries a control signal by the central processing unit 12 on a 38 kHz carrier and transmits it through an infrared light emitting diode. The infrared receiver 21 receives the electrical signal induced by the diode, removes the 38KHz carrier wave, and reproduces the digital signal through a comparator and the receiver 21 The operation of generating a receiving operation by the control command of the CPU 22, the program ROM 23, the RAM 24, and the CPU 22, which decodes the received control signal and uses it as a control command. A port 25 and a display driver 27 for driving a display unit 28 for displaying a reception state are provided. Here, the key input unit 15 uses a contact switch.

Looking at the prior art operation configured as described above is as follows.

When the user operates the contact switch through the key input unit 15, the central processing unit 12 recognizes the short-circuit position by the switch operation, and the program ROM 13 stores the control code generation data corresponding to the recognized position information. ) Is read out and sent to the infrared transmitter 11. Then, the infrared transmitter 11 modulates the control code generation data into time information through on / off of the 38KHz carrier signal and transmits the data through the infrared light emitting diode. That is, it transmits a pulse position modulation (PPM) modulated signal.

Therefore, the PPM modulated signal emitted from the infrared light emitting diode is induced as an electrical signal of 38KHz to the photodiode, which is amplified by the infrared receiver 21 again, passes through a bandpass filter near 38KHz and is demodulated and asynchronously received. When the digital pulse is generated, the central processing unit 22 of the receiving unit 20 decodes the control information based on the pulse position promised by the transmitting unit 10 and uses the received control command.

Accordingly, the control command is transmitted to each operation port 25 to perform the reception function operation, and at the same time the operation state or changed contents are transmitted to the display driver 27 and appear on the display unit 28. The general information displayed on the display unit 28 is read and judged to operate the contact switch key input of the key input unit 15 in the transmission unit 10.

However, in the conventional one-way infrared remote control apparatus, the transmitting unit only transmits control information promised with the receiving unit in one direction and does not have a function of receiving desired information from the receiving unit. The state of the reception operation by the transmission operation can be confirmed through the reception operation mode or the controlled reaction shown through the display device or the alarm device of the reception unit. However, since there is no device transmitting from the receiver to the transmitter, it is impossible to know the internal operation state or abnormality in which the display device or the alarm device does not respond in the current reception state, and it is expensive to implement the display and alarm device of each receiver in the system configuration. And effort is required.

In particular, the cost of implementing a separate display device for each home appliance except for a TV receiver having a self-display device is a large part of the pure material cost.

Accordingly, an object of the present invention is to provide a two-way infrared remote control apparatus and method for controlling a plurality of receivers with one transmitter.

Another object of the present invention is to remove the display device for checking the operation status in the receiver and to send the confirmation command and confirmation to the sender from the transmitter to the receiver by sending the display unit to the receiver to send the confirmation content according to the confirmation command to the transmitter and the user The present invention relates to a two-way infrared remote control device and method for checking a reception state through a display device of a transmitter.

Bidirectional infrared remote control device configuration of the present invention for achieving the above object is, as shown in Figure 2, selecting one of a plurality of receiving systems and infrared to output the control information to the selected system as an infrared signal A transmitting unit 10 having a transmitting unit, an infrared receiving unit operating in accordance with a control signal and receiving an infrared signal transmitted from a corresponding receiving system, and a display unit for displaying transmission information and receiving information according to control information through a key input unit; In addition, an infrared receiver for receiving the control signal transmitted from the transmitter 10 and a control operation according to the reception control signal received through the infrared receiver, and the information to be confirmed when receiving a confirmation command by changing the infrared alarm to the It consists of the receiver 20 which equipped the infrared transmitter which transmits to the transmitter 10.

The operation and effect of the present invention configured as described above will be described with reference to the transmitter control flow diagram shown in FIG. 3A and the control flow diagram shown in FIG. 3B.

First, the basic operation of the transmitter 10 is shown in Figure 2 is a processor consisting of the central processing unit 12, program ROM 13, RAM 14, as shown in the configuration of the present invention is read through the key input unit 15 Three types of codes are generated by replacing the key position information with the code values promised in the program ROM 13.

That is, the operation of each code, classified into a reception selection code, a one-way control code, a control and a confirmation code, is as follows.

First, if a code format (FORMAT) promised with each receiver is defined in the program ROM 13 when a reception selection code is inputted, the program ROM selects the code output format promised with the receiver desired to be controlled. It reads from (13) and stores it in the RAM 14 and outputs the code. The selection is applied to the display driver 17 so that the display driver 17 has the font of the display driver 17 corresponding to the selection. Is displayed on the display unit 18 so as to be confirmed by the user. At this time, the display driving unit 17 is continuously driven for a predetermined time by the processor.

Second, the one-way control code is an output format stored in the RAM 14 by a reception selection code. The output information corresponding to the position of the contact switch of the key input unit 15 is read from the program ROM 13 and the infrared transmitter ( Output through 11).

That is, the one-way control code only operates in the form of a conventional infrared transmission output that transmits only a control command to the receiver 20 to operate reception, and does not confirm operation. Then, the contents of the one-way control code are displayed on the display unit 18 for a predetermined time in the same format as the first so that the user can confirm whether the one-way control code is output.

Third, the control and confirmation code (bidirectional control key) is a code that is output when the operation name is output to the receiver 20 and the receiver 20 is operated by a command and the information is to be read directly in a specific area. .

In other words, the processor 10 outputs the control and confirmation code to the receiver 20 through the infrared transmitter 11 of the transmitter 10, evacuates the output information to the RAM 14, and receives the receiver 20. In order to receive the confirmation information sent from the) operates the infrared receiver 19 of the transmitter 10, in this case, the control code information and the received confirmation information stored in the RAM 14 to the display driver 17 When transmitted, the corresponding font is generated in the display driver 17 so that the font is displayed in the form of color or brightness.

Here, the control and confirmation code outputs an operation command to the receiving unit 20, and outputs a confirmation command for confirming the state of the receiving unit 20, and receives the confirmation contents sent from the receiving unit 20 to display the display unit ( The keycode value indicated by the user for confirmation by 18).

Therefore, the display driver 17 and the display unit 18 of the transmitter 10 show the reception selection information, the one-way control code output contents, the control and confirmation code output and confirmation contents according to the key operation state.

That is, according to the operation flow of FIG. 3, in FIG. 3A, a user's manipulated key read through the key input unit 15 of the transmitter 10 is divided into a one-way control key and a control and confirmation key. The code is output to the receiver 20 through the infrared transmitter 11, the infrared receiver 19 of the transmitter 10 is invalidated, and the one-way control code output contents are displayed through the display unit 18 for a predetermined time.

Then, the control and confirmation key first transmits the control code to the receiver 20 through the infrared transmitter 11, then transmits the confirmation code, and activates the infrared receiver 19 of the transmitter 10 to enter the reception standby state.

Then, when the confirmation information is output from the receiving unit 20, it is received through the infrared receiving unit 19 of the transmitting unit 10 and changed into display information, and then the control information and the confirmed information are simultaneously displayed on the display unit 18 to be recognized by the user. Do it.

When the one-way control code is received, the receiving unit 20 shown in FIG. 3 b transmits an operation command according to the code value to the operation port 25 and performs a functional operation of the receiving unit 20, but sends information to the transmitting unit 10. Since it is not a code to output, the infrared transmitter 29 of the receiver 20 is not operated.

If the confirmation code is input, the contents of the corresponding address are read and transmitted to the transmitter 10 through the infrared transmitter 29, but since the receiver 20 itself does not have a display device, the independent display operation cannot be performed.

In addition, in all control and confirmation code operations, a time delay is required because the transmitter 10 may not be able to synchronously transmit and receive by infrared interference at the same time from the transmitter 10 to the receiver 20 and from the receiver 20 to the transmitter 10 at the same time. Simultaneous transmission and reception via (OPTICAL FIBER) is possible.

On the other hand, according to another embodiment of the present invention, as shown in FIG. 4, each receiver 20a-20e does not have its own display device.

For example, in TV, no font generator for on-screen display or switching ICs for switching between R, G, and B are used. In the case of VCR, no display is required on the front panel. And since there are no other lamps, it is possible to check and operate each reception state through the display unit 18 of the transmitter 10 without the display unit and the display driver in the respective receivers 20a-20e.

Therefore, only the area where the reception photodiode and the transmission infrared light emitting diode are located is required on the front panel of each receiver 20a-20e.

As described in detail above, the present invention achieves significant cost savings by deleting an operation key and a display device for a user in each receiving device by performing communication through infrared signal transmission and reception using a display unit of a remote control which is a transmitting device. Will be.

Claims (3)

Infrared transmitter for selecting one receiving system among multiple receiving systems and transmitting control information to the selected system as infrared signal, and infrared receiver for receiving infrared signal from the corresponding receiving system and operating according to the control signal. A transmission unit 10 having a display unit for displaying transmission information and reception information according to control information through the control unit, an infrared receiver unit for receiving a control signal transmitted from the transmitter unit 10, and a control inputted from the transmitter unit 10 Bidirectional infrared remote control device comprising a receiver 20 of a plurality of systems having an infrared transmitter for transmitting the information to be confirmed by the transmitter 10 to the infrared information when the signal is a confirmation command. According to claim 1, Receiving unit 20 is characterized in that the reception state is displayed through the display unit of the transmitting unit 10 by the confirmation command of the transmitting unit 10 can be confirmed, it is not necessary to provide a separate display unit 2-way infrared remote control. An input key determination process for determining an input control key, a reception selection process for selecting one of a plurality of receiving systems and displaying selection information if the input key is a reception selection key in the input key determination process, and the input key determination process If the input key is a two-way control key in the two-way control process for receiving information for checking the reception status of the control system according to the command through the receiving unit for a predetermined period, and if the input key in the input key determination process, the control Control step of the transmission unit 10 consisting of a one-way control process for controlling the control system by sending a command, a command input process for receiving the received control command, and a control for performing the control command input through the command input process If it is determined whether the command execution process and the control command received in the command input process include the confirmation command, Bidirectional infrared remote control method, characterized by made of an control step of receiving the confirmation information 20 is composed of an output process for outputting to the transmission section.