KR950004420B1 - Remote control receiver - Google Patents

Abstract

The control code learning remote control receiver includes: a CPU for memorizing an input control code into a memory region and learning-controlling when the same control code as memorized control code is input; an ROM for memorizing the drill-controlling process and an RAM as a control data memory; an infrared input section for amplifying and waveform-correcting input infrared signal; a demodulator for examining the wavelength of an envelope of the wavelength-corrected signal; an interrupt generator for interpreting bit information by generating an interrupt for the wavelength-corrected signal; a timer for reading a level high and low time of the bit information; a carrier counter for counting the number of carriers of the bit information desired by the interrupt; a code memory section for memorizing and reading a learned control code corresponding to the operation; a switch input section for input commands such as a learning or output; a control code; a displayer and a display drive section; a clock generator.

Description

Control code learning remote control receiver and learning and control method

1 is a block diagram of a remote control apparatus using a conventional remote control transmitter with a learning function.

2 is a block diagram of a conventional remote control transmitter with a learning function.

3 is a block diagram of a control code learning remote control receiver of the present invention.

4 is a detailed circuit diagram of an infrared input unit in the receiver of the present invention.

5 is a timing diagram of a relationship between infrared reception and signal processing in a receiver of the present invention.

6A is a memory structure diagram of basic bit information in the present invention, and (b) is a memory structure diagram of continuous input bit information in the present invention.

7 is a flowchart of a receiver learning process of the present invention, and (b) is a flowchart of a receiver control process of the present invention.

8 is a configuration diagram of a remote control system according to the present invention.

* Explanation of symbols for main parts of the drawings

2: CPU 3: ROM

4 RAM 5 Infrared input unit

6: demodulation part 7: interrupt generation part

8: timer 9: carrier counter

10: code memory unit 11: switch input unit

12: control operation unit 13: display unit

14: display driver 15: clock generator

According to the present invention, a control code and a control code format are promised so that the receiver includes a means for learning the control code at the receiver side in a set of remote control devices in which the transmitter and the receiver correspond one-to-one to the receiver. The present invention relates to a control code learning remote control receiver and a control code learning in the receiver and a method of controlling the same.

As shown in FIG. 1, a learning function is built to improve the inconvenience of using a plurality of remote control transmitters in a set of remote control devices in which a plurality of general-purpose transmitters RT1 to RTn and receivers RV1 to RVn correspond one-to-one. The remote control transmitter 1 is used.

Referring to FIG. 2, the learning transmitter 1 is characterized by a CPU 1A for controlling a transmitter, a ROM 1B storing a control process, a RAM 1C as a data memory, and inputting instructions such as learning and code output. A switch input unit (DD), an infrared signal output unit (1E) for outputting a control code, an infrared signal input unit (1F) in which an infrared signal is input and decoded, and a learning code storage unit for recording input and recognized control code information (1G), a display unit (1H) and a display driver (1I) for displaying the operation state, and a clock generator (1J) for supplying all the clock signals necessary for operation to learn and transmit the control code. .

That is, when the user operates the switch input unit 1D to set the learning mode by learning the control code of the one-to-one universal transmitter RT1, the CPU 1A sets the code storage area in the learning code storage unit 1G (allocation). Then, the code input to the infrared signal input unit 1F is analyzed and learned.

The infrared signal received by the infrared signal input unit 1F is converted into an electrical signal and subjected to amplification, waveform shaping, and envelope detection.

The envelope signal becomes a reference signal from which bit-by-bit information of the control code is decoded so that the number of carriers and the signal period (high or low level time) during this signal period are decoded, and repeated sets of a constant number of bits inputted successively. The control code value is converted into the code form promised and stored in the storage unit 1G.

The operation state is displayed on the display unit 1H through the display driving unit 1I while performing such a series of operations. In the subsequent control operation, the information memorized and stored in the memory unit 1G is read in response to the operation command input through the switch input unit 1D, so that the control code is output in the same control format as the control code learning unit. The function control to output to (1E) is executed.

However, according to the conventional remote control device, the learning transmitter does not output the control code by itself, but it is inconvenient to output the control code only by learning and storing the control code generated from an arbitrary general-purpose transmitter. Constraints are associated with control code values or control code transmission formats that are defined one-to-one correspondence during the transmission and reception periods, and the number of switches corresponding to the number of operation switches included in each general-purpose transmitter must be provided on the learning transmitter side. There is a problem that the performance is reduced, a large capacity memory corresponding to the number of switches is required, and confusion of the user is caused by a plurality of switch configurations.

The present invention includes a control code learning means in a remote control receiver and learns and records a specific control code generated from an arbitrary transmitter to correspond directly to the control operation of the receiver so that the corresponding control code is matched when the same control code is input. Control code learning remote control receiver and learning and control method to control the number of transmitters and the simplicity and simplicity of operation and the convenience of use according to the control code value and code transmission form. It is an object of the present invention to describe the configuration of the present invention and the control code learning and control operation according to the present invention with reference to Figures 3 to 8 as follows.

First, referring to FIG. 3, the control code learning remote control receiver of the present invention stores the input control code in a storage area corresponding to an operation function to be controlled, and performs the corresponding function when inputting the same control code as the stored control code. A CPU 2 for performing learning control, a ROM 3 for storing the learning control process, a RAM 4 as a control data memory, an infrared input unit 5 for amplifying and waveform correcting an input infrared signal; And a demodulator 6 for detecting an envelope from the waveform-compensated signal, an interrupt generator 7 for generating an interrupt from the demodulated envelope signal to decode the bit information, and the level information of the bit information by the envelope signal. The timer 8 for decoding the low time, the carrier counter 9 for counting the number of carriers of the bit information defined by the interrupt, and the learned control code are stored in correspondence with the corresponding operation function. And a code memory unit 10 to be decoded, a switch input unit 11 for inputting instructions such as learning and code output, a control operation unit 12 for performing a corresponding function when the control code is matched, and an operation state display. The display unit 13 and the display driver 14, and the clock generator 15 for supplying all the clocks necessary for operation, and the learning and control operation by the receiver of the present invention configured as described above are as follows.

The user operates the switch input unit 11 to set the learning mode, and the control code (infrared signal) generated by the general-purpose transmitter is received by the infrared input unit 5 and amplified and waveform-formed.

That is, referring to FIG. 4, the infrared input unit 5 converts the infrared signal received by the photodiode D0 into an electrical signal, and the anode P5 of the photodiode D0 is connected to the anode P1 of FIG. The waveform signal is induced, and this signal is prevented by the direct current component through the capacitor (C1), then amplified by the transistor (Q1), and the noise component is passed through the bandpass filter of the resistors (R6) and (R7) and the capacitor (C2). The waveform is removed and amplified according to the switching amplification operation of the transistor Q1. The output terminal OUT outputs an amplified and corrected signal (a pulse position modulated signal with a carrier of 38 KHz) as shown in FIG.

This signal is input to the demodulator 6 and the carrier counter 9. The demodulator 6 performs an envelope detection of the input signal and outputs an envelope detected signal as shown in FIG. 5C. Is supplied to the interrupt generator 7.

The interrupt generator 7 generates an interrupt at the rising edge or the falling edge of the detection signal as shown in FIG. 5E. The interrupt signal is provided to the timer 8 as a signal for decoding the bit information.

In other words, when the timer 8 defines the rising edge of the detection signal to the next rising edge or the falling edge to the next falling edge as the bit, which is the basic unit of the control code, (C) and (D) of FIG. Decode the level high time and level low time of the detected signal as shown in.

The carrier counter 9 then counts the number of carriers n in one bit period.

The 1-bit level high time, level low time, and number of carriers thus decoded become 1-bit components, and the bit information is provided to the CPU 2, and the CPU 2 inputs the input bit information to the code memory unit 10. Are recorded in the storage area.

For example, if a plurality of bits (bit0, bit1, ..., bit7, ...) are continuously inputted, eight storage areas (addresses: 000 to 111) are stored in the code memory unit 10 as shown in FIG. And record the number of carriers, the level high time and the level low time, which are basic information of bits (bits 0 through 7).

At this time, the basic information of successively input bits is compared with the basic information of a control code previously input, and if different, it is registered as a new bit, and the address of the registered area is stored in the address storage area in the structure as shown in FIG. Record continuously.

Using such a collection of addresses, the repeated bit pattern is found, and the address at which the repeating pattern starts is recognized as the address of the start bit, and the address at which the repeating pattern ends is recognized as the address of the last bit. Addresses between the stored contents (carrier number, level high time, level low time) of the eight basic bits (bit 0 to bit 7) information recognized and the address ending from the address at which the repetition pattern starts are stored in the user-defined remote control function. The control code was learned by writing to the corresponding storage area. In this case, the stored information overcomes the limitation of storage capacity by storing an array of basic bit information that is at least 3 bytes in a compressed form, and requires 8 or more basic bit information storage areas and secures an address of 4 bits or more in binary. Allocates area

The information recorded as described above compares the basic bit information input when performing the remote control operation with the address of the repetition pattern to determine whether the corresponding function is executed.

FIG. 7A is a flowchart showing the control code learning process.

That is, when the switch input unit 11 is decoded and the learning instruction is set, the code storage unit 10 sets a storage area as shown in FIG. 7 and decodes bit information such as the number of carriers, level high time, level low time, and the like.

In this way, the bit information of the input control code signal is decoded and registered sequentially. At this time, it is determined whether or not the new bit information is registered, and if it is a new bit, it is registered together with the corresponding information and the registered address is recorded. Only record.

If the control code is not input for more than a certain time, the learning mode is canceled, and if bit information is input for more than the number (n; set value) of repetitive pattern recognition from the recorded address of the bit, continuous padding is performed from the start and end bits. By recognizing this, the collection of bit information and repetition patterns of the addresses are recorded in the storage area set in the code memory section 10, and then the learning mode is released.

Thereafter, the user operates the switch input unit 11 to set the operation mode. In the operation mode, when the control code is input as shown in (b) of FIG. 7, the inputted control code information and the learned memory information are sequentially compared. If control codes match each other, the control operation corresponding to the control codes is executed. If no control codes match, the control operation ends without performing the control operation.

8 shows a remote control system to which the control code learning remote control receivers RCV1 to RCVn of the present invention are applied. The control code learning remote control receiver is used by using a general-purpose transmitter RT1 corresponding to the general-purpose receiver RV1. Remote control of (RCV1 to RCVn).

In this case, the remote control receivers RCV1 to RCVn learn the control codes output from the general-purpose transmitter RT1 as described above, and record them in a storage area corresponding to an operation function desired by the user. There is a possibility that an error in which the plurality of learning receivers RCV1 to RCVn operate simultaneously may occur. Therefore, the learning receiver selection code recording area is allocated to the code storage area of the learning code storage unit 10, and one or more other Allocate a learning receiver selection code recording area to record a receiver selection code and another receiver selection code when the control code is learned.

When the control operation is executed, the control code recorded in the receiver selection code storage area is compared with the input control code, and the control code reception operation is executed only in the same case. In other words, the same control code as that of the other receiver is executed. If is input, the control code receiving operation is stopped, thereby preventing operation errors of the learning receivers.

The receiver operating state accompanying the series of operating processes is displayed on the display unit l3 through the display driving unit 14 so that the user can recognize the operating state of the device.

As described above, according to the present invention, when applied to a system for controlling a plurality of different remote control devices, a system for selecting a plurality of monitors from a broadcasting station, and the like for remote control, a plurality of remote control receptions are performed using one remote control transmitter. It is convenient to control the devices, and the number of transmitters and the number of switches for operation can be reduced, so that the operation can be simplified and simplified, and the receiver itself operates the control code generated from the general-purpose transmitter without being restricted by the control code value or code transmission format. Since it is used in accordance with the function, there is an effect that can be convenient for remote control system operation.

Claims (4)

A CPU 2 for storing learning in a storage area corresponding to an operation function to control the input control code and performing learning control so that the function is executed when the same control code is stored as the stored control code, and the learning control process is stored. A ROM (3) and a RAM (4) as a control data memory, an infrared input unit (5) for amplifying and waveform correcting an input infrared signal, a demodulation section (6) for detecting an envelope in the waveform corrected signal, and demodulation An interrupt generator 7 for generating an interrupt from the envelope signal and decoding the bit information, a timer 8 for decoding the level high and low time of the bit information by the envelope signal, and bit information defined by the interrupt. A carrier counter 9 for counting the number of carriers of the carrier, a code memory unit 10 in which the learned control code is stored and decoded in correspondence with a corresponding operation function, and command input such as learning and code output. A switch input unit 11, a control operation unit 12 for performing a corresponding function when the control code is matched, a display unit l3 and a display driver 14 for displaying the operating state, and supplying all the clocks necessary for operation Control code learning remote control receiver comprising a clock generator (15). A code learning process for receiving and decoding control codes generated from a remote control transmitter and recording them in a learning code storage area corresponding to a control function of a receiver to be controlled, and a control code recorded in a learning process during a control operation. Control code learning remote control receiver learning and control method consisting of a control process for performing the operation function corresponding to the code if the same compared to the code. The method of claim 2, wherein the code learning process sets a learning code storage area in the learning code storage unit 10 when the switch input unit 11 decrypts the result learning instruction, and decodes the input bit information to register the new bit. Records the register address of the bit. If the bit is already input, only the register address is recorded. If more than the number of bit patterns that can recognize the repeated bit pattern is input from the recorded bit address, the contents of the bit information and the corresponding address are recorded. Learning and control method of a control code learning remote control receiver comprising the step of releasing the learning mode after recording the repetition pattern set in the set learning code storage area. 4. The learning code storage area according to claim 2 or 3, wherein the learning code storage area allocates one or more different receiver selection code storage areas from the receiver's own selection code storage area, and the receiver's own selection code and one or more other code in the code learning process. Learning the control code including a process of recording a receiver selection code in the storage area and executing a receiving operation if the control code inputted in the control process and the recorded receiver selection code match; And control method.