KR100672425B1 - Method for transmitting key code of a remocon and, a method and apparatus for processing the key code of the remocon in receving unit of a television - Google Patents

Abstract

The present invention relates to a method of setting a key code in a remote control device, wherein the controller checks whether a broadcast mode selection key or a numeric key is input from a key input unit of the remote controller, and receives a broadcast mode selection key or a numeric key from the key input unit. Determine whether the input key is a numeric key; if the input key is a numeric key, transmit the keycodes of both the broadcast mode key and the numeric key to the receiver of the television via the transmitter of the remote controller, If the input key is not a numeric key, it is determined whether the input mode is a broadcast mode selection key. If the input key is a broadcast mode selection key, the key code of the broadcast mode selection key is transmitted to the receiving unit of the television through the transmitting unit. And if the input key is not a broadcast mode selection key, determines whether it is a miscellaneous key, and if the input key is a miscellaneous key, transmits a miscellaneous key. When the broadcast mode is selected by a remote control device which transmits both the broadcast mode selection key and the key code of the numeric key, transmits only the key code of the broadcast mode selection key, or transmits only the key code of other keys according to a CPU command. Input the common use key by broadcasting mode, for example, number / channel key as 2 byte keycode information, and input all the keys except the common use key by broadcasting mode as 1 byte key code information, Nevertheless, it is effective to set the channel in the broadcasting mode correctly.

Description

METHODO FOR TRANSMITTING KEY CODE OF A REMOCON AND, A METHOD AND APPARATUS FOR PROCESSING THE KEY CODE OF THE REMOCON IN RECEVING UNIT OF A TELEVISION}

1 is a plan view of a remote control device according to the present invention.

2 is a block diagram showing a general circuit configuration of the remote control device.

3 shows a keycode transmitted by a remote control device according to the present invention.

4 is a flowchart illustrating a method of transmitting a key code in the remote control apparatus according to the present invention.

Fig. 5 is a block diagram showing a circuit configuration for processing the key code transmitted by the remote control device in the digital television receiver according to the present invention.

6 is a waveform diagram for setting timing to add key off information in accordance with the present invention.

7 is a flowchart for processing a key code transmitted from a remote control device according to the present invention in a digital television receiver.

* Description of the symbols for the main parts of the drawings *

100: remote control, 110: key input unit

120: control unit 130: memory unit

150: slicing unit 160: RAM

The present invention relates to a remote control device. More specifically, the present invention relates to a remote control device and a method for transmitting the keycode such that key codes such as channel numbers and channel up / down keys are set to operate according to a broadcast mode. The present invention also relates to a digital television comprising a circuit for receiving and processing a keycode set by a remote control device and a method for processing the received keycode.

In general, in order to remotely control operations of a digital television receiver, a VCR, a cable broadcasting receiver, etc., which have different manufacturers and product specifications, a remote controller device provided by each manufacturer must be used. Such a remote control device controls an electronic device by sending a key code different from each manufacturer to an infrared carrier, and the infrared carrier has a straightness.

In addition, in the digital television system, the existing remote control apparatus uses broadcasting mode selection keys such as terrestrial broadcast (BS), terrestrial A broadcast, terrestrial D broadcast, satellite 1 (CS1), and satellite 2 (CS2), respectively. It sets to 1-byte keycode information, sets numeric keys 01 to 12 to 1-byte keycode information, respectively, and transmits it to the receiving section of the electronic device through the transmitting section. That is, the conventional remote control device sets one-byte keycode information for each broadcast mode selection key, sets one-byte keycode information for the numeric keys, and transmits them. The receiving unit of the television combines these two keys and the user desires. Display the channel.

However, such a key combination of a conventional remote control unit does not coincide with the direction of the infrared carrier wave of the remote control unit by transmitting the broadcast mode selection key and the numeric keys to the infrared carrier with 1 byte key code information, respectively. In some cases, a broadcast channel desired by a user may not be set. In other words, if the user operates the remote control without facing the television receiver, and the remote control signal is sent straight, it is not received at the receiving section of the television receiver because the remote control signal is straight. For example, while a user watches channel 5 of the terrestrial A broadcast mode among a plurality of broadcast modes, the user tries to watch channel 5 of the satellite 1 (CS1) broadcast mode. At this time, if the user selects the satellite 1 broadcast mode with the remote control and does not face the television receiver, and sets channel 5 toward the television receiver, the television receiver is set to channel 5 of the terrestrial A broadcast mode set previously. There was a problem.

In addition, in the existing data broadcasting, when the menu of the broadcast program displayed on the television receiver moves, the remote control keys are continuously operated, which makes it inconvenient for the user to select the program.

Accordingly, there is a need for a remote controller capable of setting a channel of a desired broadcast mode despite user's careless remote control operation.

In addition, there is a need to operate the remote control keys one time at a time when moving the broadcast program menu of data broadcasting.

Accordingly, an object of the present invention is to store the common use key for each broadcast mode, for example, the number / channel key in the memory as 2-byte key code information when selecting the broadcast mode in the remote control device, all keys other than the common use key for each broadcast mode The 1-byte keycode information is stored in the memory to accurately set the channel in the broadcast mode despite user's careless remote control operation.

Another object of the present invention is to control the CPU command on the receiving side of the television according to the key mode of the broadcast mode selection key and the number / channel key transmitted from the remote control device to process the keycode.

It is still another object of the present invention to add key off information when decoding a remote control signal at the receiving side of a television to prevent continuous movement of the remote control keys during menu movement of a broadcast program in data broadcasting.

In order to achieve the above object, the remote control key code transmission method according to the present invention comprises the steps of checking whether a broadcast mode selection key or a numeric key is input from the key input unit 110 of the remote control unit, and a broadcast mode selection key from the key operation unit. Or if there is an input of a numeric key, determining whether the input key is a numeric key; and when the input key is a numeric key, the key code of both the broadcast mode key and the numeric key is transmitted to the remote control unit. Transmitting to the receiving unit of the TV through the step; determining whether the input mode is a broadcast mode selection key if the input key is not a numeric key; and in case of the broadcast mode selection key, broadcasting mode according to a CPU command. Transmitting the key code of the selection key to the receiving unit of the television via the transmission unit; determining whether it is the other key if not the broadcast mode selection key; And transmitting the key code of the other key to the receiving unit of the television in accordance with the CPU command.

In addition, the key code processing method of the television according to the present invention comprises the steps of determining whether the remote control signal received at the receiving unit of the television is a broadcast mode selection key, and if the remote control signal is a broadcast mode selection key, confirming the broadcast mode selection key. Controlling the CPU command according to the key code, determining whether the remote control signal is not the broadcast mode selection key, determining whether it is a numeric key, and checking the numeric key if the remote control signal is a numeric key. And controlling the CPU command in accordance with the key code, and controlling the CPU command in accordance with the key code when the numeric key is not a numeric key.

In addition, the receiving apparatus of a television according to the present invention stores a slicing unit for receiving a remote control signal consisting of a key code and other information transmitted from a transmitting unit of a remote control unit and converting it into a bit stream, and a key code and other information input to a sliding unit. The key decoder unit checks the completion of slicing in the RAM and the slicing unit at regular intervals, reads the keycodes and other information stored in the RAM, and uses the keycodes and other information to create a data stream and store them in the RAM again. And, when the decoding of the key decoder unit is completed, initializes the decoding completion information, reads the data stream stored in the RAM from the key decoder, and sequentially reads the data stream when the CPU reads the data stream by one byte. It consists of a communication unit that inputs into the shift register one byte at a time. .

The remote control signal preferably includes 1 byte keycode information and 2 byte keycode information.

The two byte keycode information is preferably numeric / channel key information.

The one-byte keycode information preferably includes a broadcast mode selection key, a channel key, and other keys in addition to the number / channel key.

The three byte data stream includes first key data, second key data and third key data, the first key data includes user operation information, the second key data includes broadcast mode information, Preferably, the third key data includes unique information assigned to a key, for example, channel / numeric key information.

The CPU compares the second key data of the data stream received through the IIC communication unit, that is, the broadcast mode and the broadcast mode stored in the memory in the CPU, and if these two broadcast modes are the same, the third key data, i.e., channel / number It is desirable to switch to the channel assigned to the key information.

In the key decoder, if the remote controller information does not enter within a predetermined time after the last information of the remote controller is input, the time-out timer is terminated and key off information is added.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view of a conventional remote control. Such a remote control includes a broadcast mode selection key such as terrestrial broadcast (BS), terrestrial A broadcast, terrestrial D broadcast, satellite 1 (CS1) broadcast, and satellite 2 (CS2) broadcast, numeric keys 1-12, and channel key (CH). ), Guitar keys, and so on.

2 is a block diagram of a circuit configuration of the remote controller 100 according to the present invention. The remote controller 100 includes a key input unit 110, a control unit 120, a memory unit 130, and a transmitter 140.

The operation of the components of the remote controller configured as described above is as follows.

The key input unit 110 uses a broadcast mode selection key 1, a numeric key 2 (or a common mode for each broadcast mode), a channel up / down key 3, other keys 4, and the like shown in FIG. A plurality of keys are included to output a key signal corresponding to a key input of a user.

The controller 120 reads key code data stored in the memory unit 130 in response to the key signal from the key input unit 110. The keycode data includes one byte keycode data and two byte keycode data. The number / channel key is stored in the memory unit 130 as 2-byte keycode data, and all keys except the number / channel key are stored in the memory unit 130 as 1-byte keycode data. Therefore, such one-byte or two-byte keycode data is output as serial data under the control of the control unit 120.

The transmitter 140 transmits the keycode data output from the memory unit to an infrared carrier generated at a predetermined frequency to a receiver of a set of electronic devices such as television and video.

The following describes setting the key code of the remote controller according to the present invention configured as described above.

3 is a diagram for setting a key code transmitted by the remote control device according to the present invention.

As shown in FIG. 3, all keys such as the broadcast mode selection key and the other keys except for the number / channel keys 2 and 3 shown in FIG. 1 are set to 1-byte keycode information at intervals of 108 ms. Numeric / channel keys 2 and 3 set 1 byte in themselves, 1 byte in broadcast mode, and 2 byte keycode information. Such one-byte keycode information and two-byte keycode information are stored in the RAM 130 and transmitted to the television via the transmission unit under the control of the CPU 120 in response to the key signal of the key input unit.

As described above, a method of transmitting all the keys of the remote controller to the 1-byte keycode information and the 2-byte keycode information and transmitting them to the receiver of the television will be described.

4 is a flowchart illustrating a method of transmitting a key code in the remote control apparatus according to the present invention.

In the remote control key code transmission method according to the present invention, in step S1, it is checked whether a broadcast mode selection key or a numeric key is input from the key input unit of the remote control.

In this way, when there is an input of a broadcast mode selection key or a numeric key from the key input unit, it is determined in step S2 whether the input key is a numeric key.

As a result of the determination, when the input key is a numeric key, in step S3, the key codes of both the broadcast mode key and the numeric key are transmitted to the receiver of the television via the transmitter.

If the input key is not a numeric key, it is determined in step S4 whether it is a broadcast mode selection key.

As a result of the determination, when the input key is the broadcast mode selection key, the key code of the broadcast mode selection key is transmitted to the reception section of the television via the transmission section in step S5.

If it is not the broadcast mode selection key, it is determined in step S6 whether it is the other key. If it is a miscellaneous key, the miscellaneous key is sent to step S7.

In step S7, both the broadcast mode selection key and the keycode of the numeric key are transmitted, only the keycode of the broadcast mode selection key, or only the keycode of the other keys, according to the CPU instruction.

The following describes an apparatus and method for processing a key code transmitted by a remote control device according to the present invention at a receiving section of a television.

Fig. 5 is a block diagram showing a circuit configuration for processing the key code transmitted by the remote control device according to the present invention in the receiving section of the television.

In this figure, the slicing unit 150 receives a remote control signal from the remote control device 100. This received remote control signal, i.e., 1 byte keycode information and 2 byte keycode information, are both converted into a bit stream. Slicing unit 150 also stores data useful in all bit streams in RAM 160 in the form of keycodes and other information. The keycode includes first keycode data and second keycode data. Other information includes timeout information, 2-byte keycode information, and broadcast mode information since the last signal of the remote controller.

As described above, when the slicing for converting the remote controller signal into the bit stream is completed, the key decoder 170 checks whether the slicing is completed by the timer in 16 ms period, and receives the slicing completion information. The key decoder 170 also initializes the slicing completion information and reads the keycode and other information stored in the RAM 160. This keycode and other information are RAM 160 in a three-byte data stream in the form of first key data (user operation information), second key data (broadcast mode) and third key data (unique information assigned to the key). Are stored in.

The CPU 190 checks whether or not decoding is completed every 60 ms by a timer. If decoding is completed, the CPU 190 initializes decoding completion information, and stores the data stream (3 bytes in total) stored in the RAM 160 to the IIC communication unit 180. Read through). The IIC communication unit 180 inputs a corresponding data stream into a shift register (not shown) when the CPU 190 reads from the RAM 160 one byte at a time.

Thereafter, the CPU 190 compares the second key data (broadcast mode) and the broadcast mode stored in the memory (not shown) of the data stream received through the IIC communication unit, and if the two broadcast modes are the same, the third key. Switch to the channel assigned to the data (unique information assigned to the key: channel / numeric key information, etc.). In addition, when the broadcast mode stored in the second key data and the memory (not shown) are different, after switching to the broadcast mode corresponding to the second key data, the channel is switched to the channel stored in the third key data.

After that, as described above, the keyoff information is added at the time of decoding to make the data stream of 3 bytes using the keycode and other information stored in the RAM 150.

6 illustrates adding key off information to keycode information transmitted by the remote control device according to the present invention.

As can be seen from this figure, the one-byte key information is transmitted to the CPU after the time-out timer is terminated if no other remote control information comes in within 115 ms after the last information of the remote controller is input.

Similarly, if another remote control information does not enter within 115 ms after the last information of the remote controller is input, the time-out timer is terminated and keyoff information is added to the CPU.

However, since the number / channel key is 2 byte key information, if no other remote control information comes in within 108 + 108 ms after the last information of the remote controller is input, the timeout timer is terminated, and the keyoff information is added to the CPU. .

In this way, all keys except the number / channel key are processed in the same manner as in the conventional method. As a result, key-off information is added to the 1-byte keycode information and the 2-byte keycode information at the receiving side of the television to prevent the continuous movement of the remote control keys during the menu movement of the broadcast program in data broadcasting.

7 is a flowchart in which a receiver of a television processes a key code transmitted from a remote control device according to the present invention.

 In the television key code processing method according to the present invention, in step S11, it is determined whether the remote control signal received at the television receiver is a broadcast mode selection key.

As a result of the determination, if the remote control signal is not the broadcast mode selection key, it is determined in step S12 whether it is a numeric key.

If the remote control signal is the broadcast mode selection key, step S1 proceeds to step S13 of confirming the broadcast signal selection key.

If the remote control signal is a numeric key in step S12, the flow advances to step S13 of checking the numeric key.

When the broadcast mode selection key and the numeric key are confirmed in step S13 and the remote control signal is not the numeric key in step S12, the CPU command is controlled in step S14 according to the key code command.

As described above, an embodiment of a method for transmitting a key code of a remote controller and an apparatus and method for processing the key code of the remote controller in a receiver of a television according to the present invention is to convert the number / channel key of the remote controller into 2-byte key code information. And all keys other than this number / channel key can be set to 1-byte keycode information to improve the user's remote control performance.

As described above, in the present invention, when the broadcast mode is selected in the remote control apparatus, the common use key for each broadcast mode, for example, a number / channel key, is input as 2-byte keycode information, and all keys other than the common use key for each broadcast mode are used. By inputting with 1-byte keycode information, the channel of the broadcast mode can be set accurately despite user's careless remote control operation.                     

In addition, the present invention can add key off information when decoding the remote control signal at the receiving side of the television to prevent the continuous movement of the remote control keys during the menu movement of the broadcast program in data broadcasting.

Claims (10)

A key code processing apparatus for a receiving unit of a digital television, A slicing unit for receiving a remote control signal from the remote control and converting the signal into a bit stream; RAM (Random Access Memory) for storing data of a specific bit in the form of keycode and other information of the bit stream, A timer for checking whether the slicing unit has completed slicing; After checking whether the slicing is completed by a predetermined period by the timer. A key decoder that reads the keycode and other information stored in the RAM, creates a three-byte data stream, and stores the data stream in RAM; After checking whether the decoding is completed at a predetermined period by the timer, if the decoding is completed, the data stream stored in the RAM is read through an inter-integrated circuit (ICIC) communication unit, and the data stream is stored in a memory different from the data of the data stream and the RAM. And a central processing unit (CPU) for comparing the stored data and switching to a specific channel according to the comparison result. 2. The key code processing apparatus of claim 1, wherein the remote control signal includes one byte keycode information and two byte keycode information. 3. The key code processing apparatus according to claim 2, wherein the two byte key code information is numeric / channel key information. 3. The keycode processing apparatus of claim 2, wherein the one-byte keycode information includes a broadcast mode selection key, a channel key, other keys, and the like in addition to the number / channel key.  2. The apparatus of claim 1, wherein the three byte data stream comprises first key data, second key data and third key data, Wherein the first key data includes user operation information, the second key data includes broadcast mode information, and the third key data includes channel / numeric key information. . The third key according to claim 1, wherein the CPU compares the second key data of the data stream received through the IIC communication unit, that is, the broadcast mode and the broadcast mode stored in the memory in the CPU. A key code processing apparatus for a digital television receiver for switching to data, that is, a channel assigned to channel / numeric key information. The digital television receiver of claim 1, wherein the key decoder adds key off information for terminating a time-out timer if the remote controller information does not come in within a predetermined time after the last information of the remote controller is input. Code processing unit. As a method of transmitting a key code from a remote control device, Checking whether there is an input of a broadcast mode selection key or a numeric key from a key input unit of the remote controller; Determining whether the input key is a numeric key when there is an input of a broadcast mode selection key or a numeric key from the key input unit; When the input key is a numeric key, transmitting the key codes of both the broadcast mode key and the numeric key to the receiver of the television through the transmitter of the remote controller; Determining whether the input mode is a broadcast mode selection key when the input key is not a numeric key; When the input key is a broadcast mode selection key, transmitting the key code of the broadcast mode selection key to a receiver of a television through a transmitter; If the input key is not a broadcast mode selection key, determining whether it is an other key; If the input key is a miscellaneous key, transmitting miscellaneous keys; Transmitting both the broadcast mode selection key and the keycode of the numeric key, transmitting only the keycode of the broadcast mode selection key, or transmitting only the keycode of the other keys according to a CPU command. How to set up. As a key code processing method of a television, Determining whether the remote control signal received at the receiving unit of the television is a broadcast mode selection key; Determining whether the remote control signal is a numeric key if the remote control signal is not a broadcast mode selection key; Confirming the broadcast mode selection key when the remote control signal is a broadcast mode selection key; If the remote control signal is a numeric key, checking the numeric key; And controlling a CPU command according to a key code command when at least one of the broadcast mode selection key and the numeric key is confirmed. 10. The method of claim 9, wherein the controlling step comprises: comparing the second key data of the data stream received through the IIC communication unit, that is, the broadcasting mode and the broadcasting mode stored in the memory in the CPU; If the two broadcast modes are the same, the third key data, i.e., the channel assigned to the channel / numeric key information is switched, and if not, the third key is switched after switching to the broadcast mode corresponding to the second key data. And switching to a channel assigned to the data.

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