JPH06237496A - Method for controlling infrared ray remote control device - Google Patents

Abstract

PURPOSE: To control plural systems which separately have a receiver using one transmitter by adding infrared receiving data storage memory. CONSTITUTION: This device is provided with an infrared receiving data storage memory 8 that is connected to a CPU 3. An infrared signal that is sent from an infrared signal sending part 1 according to a control command of a user is communicated as a control information code to the CPU 3 by an infrared signal receiving part 2. Here, the memory 8 stores data that is inputted from the part 2, and the data are divided with a remote control data value about each function according to the form of a waveform and stored. Then, a function that follows the input of an arbitrary remote control key is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an infrared remote control device, and more particularly to a remote control infrared remote control device control system for a plurality of infrared remote control device transmitters (eg, TV, VCR, audio, air conditioner, etc.). Regarding the method.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, an infrared remote control device has an infrared signal transmitting section 1 for transmitting infrared rays having a control information code as a user's control means, and the infrared signal transmitting section 1. Infrared signal receiving unit 2 for receiving a signal from the CPU, a CPU 3 for comparing the received signal with a predefined control code as a control command, and a read-only program memory (ROM: Read Only Mem).
ory) 4, an operation circuit section 5 that operates according to a control command of the processor, a display unit 6 that displays a control operation state, and a keypad (k) that directly transmits the control command to the processor without passing through the infrared signal transmission section 1.
ey pad) 7 and.

In the operation of the conventional infrared remote control device thus constructed, first, the infrared signal transmitted from the infrared signal transmitting section 1 by a user's control command is electrically supplied to the photodiode of the infrared signal receiving section 2. A signal is induced, and this electrical signal is received by the infrared signal receiving unit 2
After being amplified by and passing through the band pass filter, a digital control information code which is modulated by a double tone and asynchronously received is generated and transmitted to the CPU 3.

Therefore, the CPU 3 reads each control code from the read-only program memory 4 in which the promised control code is stored, compares it with the digital control information code, and operates only when these codes match. Appropriate control is performed via the circuit unit 5, and CP
U3 represents the operating state of the operating circuit section 5 via the display unit 6.

Further, the CPU 3 does not pass through the infrared signal transmitting section 1 but directly controls the corresponding function by the control command from the keypad 7 via the operation circuit section 5 and sets the display unit 6 in the control state. Represent.

[0006]

However, in the above-mentioned prior art, the infrared remote control device (remote control device) is used.
Since it operates corresponding to only one type of transmitting side from the receiving side of the te controller), it is suitable for each of the plurality of systems when considering the fact that the infrared remote control device is currently used in a plurality of systems. Multiple infrared remote controls are required.

SUMMARY OF THE INVENTION The present invention is directed to solve such a conventional problem, and provides a control method of an infrared remote control device which can control a plurality of systems having respective receivers by using one transmitter. The purpose is to provide.

[0008]

To achieve the above object, according to the present invention, a step of storing a remote control signal from an infrared signal receiving unit according to a format; the remote control signal from the infrared signal transmitting unit is an infrared ray. When received by the signal receiving unit, searching for a format corresponding to the received remote control signal among the formats stored in the infrared signal receiving unit; Storing data in the infrared signal receiver corresponding to the corresponding remote control signal allocated according to the characteristics of the signal receiver; one remote control signal of the infrared signal transmitter is input to the infrared signal receiver. The stored data includes a step of performing a function according to the content of the data corresponding to the remote signal.

[0009]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings in order to achieve the above object. The remote controller is
Infrared signal is mainly used as the remote control signal, the infrared signal with the remote control key is transmitted, the infrared signal transmitted by the infrared signal transmitter and the remote control key is received, and the received infrared signal is used. A controlled infrared signal receiver is provided. Infrared signal receiver is TV, V
It is operated according to the remote control signal of the infrared signal transmitter according to the characteristics of the system such as CR, audio system, air conditioner and microwave oven.

FIG. 2 is a block diagram of an infrared remote control device of the present invention, which is similar to the configuration of FIG. 1, except that it has an infrared reception data storage memory 8 connected to the CPU 3 and its operation is different. It is as follows. The infrared signal transmitted from the infrared signal transmitter 1 according to a user's control command induces an electrical signal in the photodiode of the infrared signal receiver 2 on the infrared signal receiver side, and this electrical signal is received by the infrared signal receiver. After being amplified by the section 2 and band-pass filtered, it is made into a digital control information code which has been modulated and received asynchronously and transmitted to the CPU 3.

The infrared signal receiving side is a system such as TV, VCR, audio, air conditioner, microwave oven, etc. The CPU 3 reads each control code from the read-only program memory 4 in which the control code is stored, and Compared with the digital control information code, only when these codes match, the corresponding control is performed through the operation circuit unit 5, and the CPU 3 displays the operation state of the operation circuit unit 5 through the drive display unit 6. Represent.

Further, the CPU 3 is an infrared signal transmitter 1
Also, a control command from the keypad 7 attached directly to the infrared signal receiving side without passing through the control of the corresponding function is also performed through the operation circuit section 5 to display the control state on the display unit 3. The infrared reception data storage memory 8 stores the data input from the infrared signal receiving unit 2, and is divided and stored by the remote control data value for each function according to the waveform form. Therefore, the function according to the input of an arbitrary remote control key can be performed.

FIG. 3 shows an embodiment of the functional arrangement of the infrared reception data storage memory 8. In the remote control memory mode, when the remote control key is pressed for each function, the remote control data value for each function is stored in the remote control data area. For example, the function 1 is a power on / off function, and the NEC format (form
After storing the data "5" of "at)", the power supply is turned on / off every time the remote control data "5" of the NEC format is input thereafter.
That is, NEC format remote control data “5”
Operates as a power on / off key which is function 1.

FIG. 4 shows in detail the connection state of the infrared reception data storage memory 8 and the CPU 3. The CPU 3 outputs a chip enable signal, data and a clock signal to the infrared reception data storage memory 8 to enable the infrared reception data storage memory 8, and the infrared reception data storage memory 8 is enabled by the clock signal. Data is stored in the memory 8. Further, the CPU 3 reads the data stored in the infrared reception data storage memory 8 and compares the data with the data input from the infrared signal receiving unit 2 to control the operation.

FIG. 5 shows an embodiment of the keypad of the present invention, which is to control the television receiver by a remote control key set by the TV maker of the television receiver or stored in the user's memory. A slide switch SW ₁ for deciding whether to control the television receiver by a remote control key, and the slide switch SW.
_The transistor Q ₁ , which is linked by ₁ , the resistors R _{1 to} R ₃ and the key matrix circuit (key matrix c).
ircuit) and.

FIG. 6 shows a key scan of the present invention.
can) waveform from the output port of the microcomputer at a fixed time period as an output port (output part) O ₁ ~
O ₃ is output as “L” (Low), and the input port (i
nput port) It recognizes which key is input by reading I _{1 to} I ₃ . That is, in a section of FIG. 6 reads the 1,2,3 No. key signal of FIG. 5, the input ports I ₁ ~ reads the 4,5,6 key signal in Step b
Recognizing that an arbitrary signal among the signals input to I ₃ is input by pressing the key of the signal input as “L”. The 7th key K7 is the slide switch SW.
_The local key (1) for distinguishing whether the key is operated by the function control key of a general TV receiver or the key used in the remote control memory mode when the local keys K1 to K6 are input by 1 ( local key)
Is.

When the slide switch SW ₁ is turned on, the transistor Q ₁ is also turned on, and in the section c of the key scan waveform of FIG. 6, that is, the output port O _{3 is set} to "L", and the remaining output ports O ₁ and O _{2 are set.} When the input ports I _{1 to} I ₃ are read with "H" (High), a current flows to the output port O ₃ via the transistor Q ₁ via the resistor R ₆ by the power source D ^+, and the input port I ₃ " Since L "is input, if the slide switch SW _{1 is} on, the remote control memory mode, that is, the remote control key stored in the memory is controlled.

FIG. 7 is a table showing an embodiment when the second key K2 in the keypad of the present invention is input. When the slide switch SW _{1 is} off (remote control key set by the TV meter of the television receiver). As shown in FIG. 7, when the "L" is input to the input port I ₂ and the slide switch SW _{1 is} turned on as shown in FIG. 7, the control is performed by the remote control key stored in the user's memory.
, "L" is simultaneously input to the input port I ₂ in the section a and the input port I ₃ in the section c, and the operation corresponding to the same key is performed.

FIG. 8 is a key function definition table showing the function of each local key by the No. 7 key K7 in FIG. 5, which is attached to the infrared signal receiving side such as a TV receiver by turning on / off the slide switch SW _1. The local keys of the provided keypad are respectively used in the control key mode defined in the remote control memory mode and the control key mode of a general TV receiver.

ON / OFF state of the slide switch SW ₁ , that is, remote control memory mode and general TV
The control operation of each local key in the receiver control key mode is as follows. The 1st key operates with the power on / off key regardless of whether the slide switch SW ₁ is on / off, the 2nd key operates with the channel up (increase) key and the remote control signal waveform confirmation key, and the 3rd key Is operated by the channel down (decrees) key and the remote control memory set key, the 4th key is operated by the volume increase key and the remote control code cursor left move key, and the 5th key is operated by the volume decrease key and remote control The code cursor right shift key operates, and the 6th key operates as an external input switching key and a remote control code storage key. That is, in the remote control memory mode, pressing the first key toggles the power on / off.
e) Operate and confirm the remote control waveform by pressing the 2nd key /
The release mode toggles, and when you press the 3rd key, the remote control code memory set / release mode toggles,
When the 4th or 5th key is pressed, the blinking part of the function display (function 1-function 3) is displayed while moving left, right, up and down. At this time, if there is a remote control input, the decoding data of the remote control waveform will blink. Display below the function. In the remote control memory mode, 6
When the No. key is input, the remote control data that is input is stored in the memory of the corresponding function address.

FIG. 9 is a flow chart showing the overall flow of the control method of the infrared remote control device according to the present invention.
FIG. 10 is a format diagram of the NEC remote control signal waveform,
FIG. 11 is a format diagram of the remote control signal waveform of MITSUBISHI, and FIG. 12 is Toshiba (TOSHIB).
It is a format diagram of the remote control signal waveform of A). First, the format of the remote control signal waveform is stored in the read-only program memory 4 on the infrared signal receiving side for each manufacturer (by type) (10). That is, after storing the format of the remote control signal waveform, which is the infrared signal shown in FIGS. 10 to 12 on the manufacturing company side, in the read-only program memory 4 of the CPU 3 and storing the various remote control signal waveform formats to be input. , So that it is controlled in the form of a remote control signal waveform that the user intends to use (11). That is, when a remote control signal, which is an infrared signal, is input, decoding is performed according to each remote control signal waveform form, and the corresponding remote control signal waveform form that can be decoded is searched for and decoded. After performing the waveform confirmation mode of the remote control signal, the remote control code memory mode is executed (12). That is, the remote control code memory mode is executed to assign a function for each remote control key on the infrared signal transmitting side according to the form of the corresponding remote control signal waveform. After performing the remote control code memory mode, if a data code is input from the infrared signal transmitting side through the remote control key, a function corresponding to the data stored as the same data code is performed (13).

FIG. 13 shows the operation flow of the remote control signal waveform confirmation mode 11 of the present invention. The operation of the remote control signal waveform confirmation mode will be described in detail. A remote control code is stored in order to control an electronic product such as a TV receiver on the infrared signal receiving side by the remote control key on the infrared signal transmitting side that the user intends to use. The form or manufacturer of the signal waveform on the signal transmitting side must be recognized by the infrared signal receiving side, for example, a microcomputer such as a receiver.

An infrared signal, which is a remote control signal, is input, the slide switch SW ₁ of the set of the TV receiver, which is the infrared signal receiving side, is turned on, and the second key of the remote control reception waveform confirmation function is input. Then, "L" is applied to the terminal I ₂ of the input pot in the section a of FIG.
Since "L" is applied to the terminal I ₃ of the input pot in the section, it is recognized as a remote control signal waveform confirmation key. At this time, in the microcomputer, the characters "remote control waveform" are displayed on the screen (On Screen D
(Spiary: OSD), the remote control signal is decoded to search for the waveform of the corresponding manufacturer (steps 21, 22, 23, 24, 25). That is, if there is a remote control signal input, the remote control signal waveform confirmation mode is searched and if it is the remote control signal waveform confirmation mode, the remote control signal data is once stored by the microcomputer according to the order stored in each microcomputer. Search for the waveform of the corresponding meter by decoding each (21, 22,
23, 24, 25 stages).

It is determined whether the remote control data is decoded according to the waveform of the remote control signal of the first manufacturer stored in the first address of the read only program memory (ROM) of the microcomputer, and if it is decoded. If not, the word "re-execute" is displayed on the screen (OSD) so that the user can input the remote control signal for decoding with the waveform of the remote control signal of the next manufacturer, and the reading is performed. The process of incrementing the access address of the dedicated program memory (ROM) by 1 and decoding the remote control waveform of the second manufacturer stored at the second address according to the input of the remote control signal is repeated.

As mentioned above, all remote control signal waveform formats stored in the read-only program memory (ROM) of the microcomputer are applied to the received remote control signal until the time when decoding is enabled. As a result, when the received remote control data is decoded, the manufacturer is memorized, the waveform of the remote control signal is confirmed, and the word "confirmation end" is displayed on the screen (OSD), and then the operation ends ( 26, 27).

In the remote control data decoding step, the method of searching for the waveform of the corresponding manufacturer is to sequentially perform decoding one by one for each manufacturer as described above. For example, the NEC format as shown in FIG. 10 is once decoded, and the user inputs the infrared signal which is the remote control signal again, and the decoding is performed for the Mitsubishi format as shown in FIG. After carrying out the procedure, the user inputs the infrared signal again and FIG.
After repeating decoding for Toshiba format like this, if a format that can be decoded appears, the manufacturer is recognized by that format.

14 to 18 are waveform diagrams of an NEC type remote control output, and a remote control decoding method will be described with reference to the drawings. The part on which the carrier is placed is the CPU
3 is recognized as high, a portion where the carrier is not mounted is recognized as low, and decoding is performed according to the time from high to low.

The NEC format has a cycle of 108 ms.
13.5 ms (9 ms + 4.5 ms) head part, custom (Custom), custom bar (Cu
Stom negative), data (Data) and data bar (Data negative). At this time, Custom is a unique accumulation of companies that use the NEC format, and data (Data) defines each function for each company, that is, for each custom code.

If the custom bar is (10010110) _B and the custom bar is (10010110) _B , and the data bar and the data bar are "1" complement relations with each other, the custom is (01101001) _B. NEC Custom,
The custom bar, data, and data bar are each represented by an 8-bit binary number. Binary data “0” is 1.125m width from polling edge to polling edge.
s, and "1" is 2.25 ms.

Therefore, the decoding of the general NEC code format is as follows. The initial head portion determines whether the width from the lagging edge to the polling edge is 13.5 ms, and each custom (Custom) and data (Data) bit counts the time from the polling edge to the polling edge. The data (Data) is decoded by determining whether the coding is normally performed. As mentioned above, when the waveform of the remote control signal is confirmed, the remote control code memory mode 12 is entered to assign the function for each of the remote control keys.

FIG. 19 is a flow chart showing the operation of the memory mode 12 of the remote control code of the present invention. First, a search is made as to whether or not the 6th key operated by the remote control code storing key of the local keys on the infrared receiving side has been inputted, and when the 6th key is inputted, it is judged whether or not the remote control memory mode key can be inputted (28 , Step 29). If there is no input from the remote control memory mode key (7th key), the general infrared signal receiving side, such as power-on / off, channel up / down, volume increase / decrease, etc., which is the control mode of the TV receiver, is generally used. The remote control code memory mode is ended to operate as a TV receiver control key.

If the remote control memory mode key (7th key) is pressed, the remote control data is stored in the memory of the corresponding function address as shown in FIG. (30 steps). That is, when the remote control key is pressed, in the confirmation mode of the remote control waveform, the decoded data is decoded as the confirmed format of the remote control signal waveform, and the decoded data is displayed immediately below the function of the blinking portion. Matched to function.

After storing the input remote control data in the memory of the address of the corresponding function, it is searched whether the third key, which is the local key for setting the remote control code memory, is input, and it is determined that it has not been input. For example, the remote control data stored in the memory is erased, and if input, the remote control code data stored according to the corresponding function is set (steps 31 and 2).

FIG. 20 is a flow chart showing the operation of the infrared reception signal processing process of the present invention. As described above, when the memory is terminated, the remote control signal input next is processed as follows. First, a search is made to see if an infrared signal, which is a remote control signal, has been input from the transmitter side of the remote controller, and if so, the address of the function 1 of the memory for storing infrared received data is selected to store the infrared received data. After reading the memory, a constant-speed call storage device (RAM: Random Access Memory)
The data stored in y) are compared to see if they are the same (3
3 to 36 stages). If the data read from the address of the function 1 is the same as the data stored in the RAM, the corresponding control function is performed (step 37). However, if the compared data are not the same, the access address of the infrared data storage memory is increased by "1", the data of the function 2 is read, and the comparison is repeated. When it is recognized, the corresponding remote control function is performed and the process ends (steps 38 and 39). Further, when the input remote control data is compared with the address data of all the functions and there is no same data, there is no remote control key that has been set, and the process ends as it is (step 39).

FIG. 21 is a block diagram showing an OSD device built in the microcomputer of the TV receiver for explaining the process of the above-described character display (OSD) on the screen. An oscillation unit 40 that outputs the G and B signals in synchronization with the signals of the horizontal deflection signal UD and the vertical deflection signal VD, a horizontal position counter 41 that functions as a horizontal and vertical position control unit that controls the display position of the OSD signal, A horizontal position decoder 42, a vertical position decoder 43, and a vertical position counter 44,
OSD for controlling character type and hue for OSD
A control unit 48 and a buffer 47 for storing character data
And a memory unit 46 for storing character-specific data according to all kinds of characters.

According to the configuration shown in FIG. 21, the vertical and horizontal position counters 41 and 44 transmit position data to the vertical and horizontal position decoders 42 and 43, and the OSD control unit 48 transmits the vertical and horizontal position decoder 4 to each other.
If character data is transmitted from the display memories 2 and 43 to the display memory 47 and the OSD function is enabled, the display memory 4
7 is used as an address, and the data at the corresponding address is read from the memory ROM 46 via the display data control unit 45 and the display output control unit 49. G. By outputting to the B terminal, the OSD (On Screen Display)
y) is executed.

FIG. 22 is a diagram showing the memory mode of the remote control code as OSD, and FIG. 23 is a diagram showing the confirmation mode of the remote control waveform as OSD. In the memory mode (FIG. 20) of the remote control code, the 4th or 5th key is pressed, or as shown in FIG. 22, the blinking portion of the function display section is displayed while moving vertically and horizontally. When the microcomputer recognizes the input of the remote control waveform confirmation key in the remote control waveform confirmation mode (FIG. 13), the word “remote control waveform confirmation” is displayed as shown in FIG. The character "re-execute" is represented by OSD, and the character "confirmation completed" is represented by OSD when the remote control data is decoded.

[0038]

As described above, according to the present invention,
There is an effect that one infrared transmitter can be used for many infrared remote control receivers.

[Brief description of drawings]

FIG. 1 is a block diagram of a conventional infrared remote control device.

FIG. 2 is a block diagram of an infrared remote control device of the present invention.

FIG. 3 is a functional layout diagram of a memory for storing infrared reception data of the present invention.

FIG. 4 is a memory for storing infrared reception data of the present invention and C;
It is a block diagram showing a connected state with PU.

FIG. 5 is a circuit diagram showing an embodiment of a keypad during microcomputer key scanning according to the present invention.

FIG. 6 is an output waveform diagram of the microcomputer in the keypad of the present invention.

FIG. 7 is a table showing an example when the 2nd key of the keypad of the present invention is input.

FIG. 8 is a diagram showing a definition table of each local key of the present invention.

FIG. 9 is an operation flowchart of the control method of the infrared remote control device of the present invention.

FIG. 10 is a diagram showing a format of each maker.

FIG. 11 is a diagram showing a format of each maker.

FIG. 12 is a diagram showing a format of each maker.

FIG. 13 is a flowchart showing the operation of the remote control signal waveform confirmation mode of the present invention.

FIG. 14 is an output waveform diagram of an NEC type remote control device.

FIG. 15 is an output waveform diagram of the NEC type remote control device.

FIG. 16 is an output waveform diagram of the NEC type remote control device.

FIG. 17 is an output waveform diagram of the NEC type remote control device.

FIG. 18 is an output waveform diagram of the NEC type remote control device.

FIG. 19 is a flowchart showing the operation of the remote control code of the present invention in the memory mode.

FIG. 20 is a flowchart showing the operation of the infrared reception signal processing process of the present invention.

FIG. 21 is an OSD block configuration diagram inside a microcomputer.

FIG. 22 is a diagram showing a memory mode of a remote control code as OSD.

FIG. 23 is a diagram showing a remote control waveform confirmation mode as an OSD.

[Explanation of symbols]

 1 infrared signal transmitter 2 infrared signal receiver 3 CPU 4 read-only program memory 5 operating circuit 6 display unit 7 keypad 8 infrared received data storage memory

Claims (6)

[Claims] 1. A step of storing a remote control signal for each format in the infrared signal receiving side; when the remote control signal from the infrared signal transmitting side is received by the infrared signal receiving side, the format stored in the infrared signal receiving side is stored. Among them, a step of searching for a format corresponding to the received remote control signal; assigning a function for each remote control signal of the infrared signal transmitting side according to the characteristics of the infrared signal receiving side, and corresponding to the corresponding remote control signal. And storing the data in the infrared signal receiving side; when one remote control signal of the infrared signal transmitting side is input to the infrared signal receiving side, the content of the data corresponding to the remote signal among the stored data A method of controlling an infrared remote control device, comprising the steps of performing the following functions; 2. The step of searching for a format corresponding to the received remote control signal, the remote control signal is input from the infrared signal transmitting side, and the mode switching signal for searching the format corresponding to the received remote control signal is input. When receiving, the infrared signal receiving side searches the storage format for one format corresponding to the received remote control signal; if this format does not correspond to the received remote control signal, , "Re-execute" is displayed so that the user can re-input the remote control signal via the infrared signal transmitter,
Searching one of the stored formats for a received remote control signal; and if the format corresponds to the received remote control signal, the corresponding format is selected. Memorize and check the waveform of the remote control signal,
The method of controlling the infrared remote control device according to claim 1, further comprising a step of displaying the characters "end of confirmation". 3. A method of searching a remote control waveform format is performed by recognizing a portion on which a carrier is placed as high and recognizing a portion on which the carrier is not placed as low, and performing the time from high to low. A method for controlling an infrared remote control device according to claim 1, wherein: 4. A method of searching for a format of remote control is performed by recognizing a portion where a carrier is placed as high and recognizing a portion where the carrier is not placed as low, and performing the time from high to low. A method for controlling an infrared remote control device according to claim 2. 5. The step of storing the data corresponding to the remote control signal in the infrared signal transmitting side includes receiving an infrared ray when a signal for switching to a mode in which the data corresponding to the remote control signal is stored in the infrared signal transmitting side is input. Assigning each desired function to each remote control signal of the signal transmitting side according to the infrared signal receiving side, and storing data corresponding to the corresponding remote control signal in the infrared signal receiving side; The method of controlling an infrared remote control device according to claim 1, further comprising the step of setting data corresponding to the stored remote control signal. 6. The step of performing the corresponding function according to the remote control signal input from the infrared signal transmitting side is stored when one remote control signal of the infrared signal transmitting side is input to the infrared signal receiving side. A step of reading one of the data; a step of comparing the read data with the data corresponding to one remote control signal of the pressed infrared signal transmission side; one remote control signal of the pressed infrared signal transmission side If the corresponding data and the read data are the same, the step of performing the function according to the content of the corresponding data; and the data corresponding to the one remote control signal of the pressed infrared signal transmitting side and the read data If they are not the same, the stored data is used for sequentially comparing the stored data with the data corresponding to one remote control signal of the pressed infrared signal transmitting side. Control method for an infrared remote control device the claims paragraph 1, wherein the constituting include; step proceeds to step reading.