JP2985239B2 - Learning remote control transmitter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a learning remote control transmitter used for various electronic devices such as a television receiver, and more specifically, to a plurality of individual transmissions. Reconfigurable remote control transmitter that can be programmed to emulate any remote control signal in the machine, requiring less memory to store remote control signals per key The present invention relates to a learning remote control transmitter capable of learning in a predetermined memory with more remote control signals.

2. Description of the Related Art The operation and the configuration of a conventional learning remote control transmitter will be described with reference to FIGS. 8 to 12. Reference numeral 101 denotes an emulated remote control transmitter. This remote control transmitter 101
The light emitting section 102 of the learning remote control transmitter 111 is disposed so as to face the PIN diode 112, and the mode changeover switch 125 of the learning remote control transmitter 111 is set to the normal mode 126 (when the key 124 of the learning remote control transmitter 111 is pressed, The learning remote control transmitter is switched from a mode in which a learned predetermined remote control signal is transmitted to a learning mode 127 (a mode in which transmission of the remote control transmitter 101 to be emulated to a specific key 124 of the learning remote control transmitter 111 is learned). The display circuit 121 confirms that 111 has entered the learning mode 127. After that, press the key 103 of the remote control transmitter 101 to emulate
The optical signal 104 is transmitted from 2.

The transmitted optical signal 104 is the PI of the learning remote control transmitter 111.
Received by N diode 112.

The PIN diode 112 is a photoelectric conversion element that converts the optical signal 104 from the remote control transmitter 101 to be emulated during the learning mode into an electric signal. The converted electric signal faithfully amplifies the incoming signal. This is sent to preamplifier section 113.

The signal output from the preamplifier unit 113 is transmitted to the next frequency circuit 1
14 and a waveform shaping circuit 117.

First, the frequency circuit 114 is a circuit for measuring the frequency of a pulse in each burst of a pulse group (hereinafter referred to as a carrier frequency) by a frequency counter 115 inside the frequency circuit 114 in the learning mode. The carrier frequency is measured by measuring the number of clocks output from the basic clock generation circuit 123 for driving the clock. In addition, in the normal mode, the circuit is a circuit that measures in the learning mode when the key 124 of the learning remote control transmitter 111 is pressed and generates the carrier frequency simply by setting the stored carrier frequency value in the frequency counter 115.

As described above, the frequency circuit 114 measures the carrier frequency of the remote control signal from the preamplifier unit 113 in the learning mode, and the carrier frequency is output to the latch circuit 116 and latched simultaneously with the completion of the measurement.

The remote control signal output from the preamplifier unit 113 is
It enters the other circuit, a waveform shaping circuit 117 for extracting the envelope curve of the remote control signal. The signal output from the waveform shaping circuit 117 is a pulse signal from which the carrier frequency component of the remote control signal has been removed.
, The pulse widths T1H, T1L, T2H, T2L, T3H, T3L... Shown in FIG. 9 (a) are measured in order, and data of each pulse width of 2 bytes is used. As in (b),
The data is stored in a random access memory 122 (hereinafter referred to as SRAM).

Next, a method of measuring the pulse width of the remote control signal will be described with reference to FIGS. 9 (a), (b) and (c).
A change in the envelope curve input of the remote control signal, that is, the rising edge of the pulse of the remote control signal is detected, and an interrupt 128 is applied to the microprocessor 120. afterwards,
Immediately starts counting the number of frequency-divided clocks (in this case, frequency-divided by 16) obtained by dividing the clock output from the basic clock generation circuit 123 that drives the microprocessor 120 by the frequency divider 129. Start measuring the pulse width T1H. That is, “pulse width = count number of clock”. Then, at the same time as the falling edge of the pulse, the microprocessor 120 is again interrupted 128
multiply. Immediately thereafter, microprocessor 120 stops counting the divided clock and measures the width of the measured pulse.
The data of T1H is immediately taken into the work area having a capacity of about 500 bytes in the SRAM 122 and is stored.

Further, the data of the counter 119 of the pulse width circuit 118 is immediately cleared, and the counting of the next pulse width T1L is started. The microprocessor 120 waits for time until the next rise of the pulse T2H, or is doing other work. At the next rising edge of pulse T2H, stop counting,
In the same manner as above, the data of the pulse width T1L of the envelope curve is taken into the work area of the SRAM 122. In this manner, counting is performed until the work area of the SRAM 122 becomes full, and the work of storing the count is continued. At the same time as the termination, the data of the carrier frequency measured by the frequency circuit 114 is taken into a predetermined area of the SRAM 122. This completes the capture of data from the remote control transmitter to be emulated. For the following description, a portion of the remote control signal where the carrier frequency is on is called a mark, and a portion without the carrier frequency is called a space. That is, the data in which the remote control signal is taken in is written in the work area of the SRAM 122 alternately by space and 2 bytes starting from the mark.

Next, the method of compressing and registering the data taken into the work area of the SRAM 122 will be described.
The first compression of the envelope curve data of the remote control signal taken into the work area of AM122 is based on the combination of mark and space as one unit, and classified into several groups of pulse widths. 4 in group
Pulse number composed of bits (in hexadecimal notation) 1,2, ...
.. A, B, C,... F, and the data of 2 bytes stored in the work area is replaced with the pulse number.

For this purpose, first, the mark and space data taken into the work area data of the SRAM 122 are shown in FIG. 9 (c).
And re-register by replacing the data of mark, mark + space (hereinafter, mark + space is called period).

Next, a method of classifying the pulse width will be described with reference to FIG. 10. The classification is performed to classify the mark and the period of the pulse width into several pulse numbers.
Grouping is performed so that all marks and periods within a certain nominal range are appropriately classified into a certain number, and a lower limit, an intermediate value, and an upper limit are determined.

That is, the upper limit and the lower limit of the mark and the period are set for each of the pulse numbers 1, 2, 3,... Used. Next, as shown in FIG. 11 (a), the data stored in the work area is compared with the upper limit value and the lower limit value, and is replaced with data of an intermediate value. , 2, 3,..., And the pulse number is set to an intermediate value which is a representative value of the 2-byte width data of the mark and the period.
FIG. 11 (b) is an explanatory diagram in which the remote control signal is represented by a pulse number.

In this way, the first compression is performed by replacing the mark and space composed of each 2 bytes of the remote control signal with the pulse number composed of 4 bits.

In the next compression, the encoded remote control data, that is, the data of each key, must be further compressed. The data must carry all the important data so that the infrared signal can be correctly reconstructed during transmission.

The compression process is shown in FIGS. 12 (A) and (B). This process is also a step of eliminating code repetition in the remote control code.

As shown in FIGS. 12A and 12B, the first number is compared with the second number. If the two numbers do not match, the first two numbers and the next two numbers are compared. Compare.
And if the two numbers do not match again,
Compare the first three numbers with the next three numbers. In this way, the comparison is continued by incrementing by one number until the first half of the number stored in the work area is compared with the other half stored. If no match is found, the comparison is repeated from the beginning, but the first number is omitted, and if no match is found, the next two
The number is omitted. FIG. 12A shows a case where there is no head signal. “121213” is repeated. Therefore, "121
It is sufficient to store the pulse number sequence of "213" and the fact that the leading pulse number of the repetition number is the 0th. FIG. 12 (B) shows a case where there is a head number. , “3435” is a repetitive signal.
It is sufficient to store the pulse number sequence of 5 "and the fact that the first pulse number of the repeated portion is the second. This means that the remote control data is compressed.

That is, the emulated remote control signal stored in the work area of about 500 bytes of the SRAM 122 is a data signal, data of a carrier frequency, the number of types of pulse width data, a single signal or a continuous signal, and a repetition number. It is converted from pulse number or pulse width data. In this manner, the captured remote control signal data is compressed to a manageable storage size, and all data is re-decompressed to an uncompressed format for retransmission of the data during emulation. Is also held.

Thus, the learning process and the storing process are completed. These steps are common to all keys in the emulated transmitter.

Next, an outline of the operation of transmitting the emulated signal by the transmitter 111 will be described. In order to transmit the emulated signal, the stored code required by the transmitter is read, decompressed, and transmitted. It is necessary.
This is done by first determining which source has been selected so that the correct data block in SRAM 122 is addressed. Then, when a key 124 is pressed, all data blocks for that source are
The address of the SRAM is transferred to the microprocessor 120. When a predetermined code is found, a predetermined data block is copied to a work area of the SRAM.

At the same time, the compressed code is expanded for remote control code duplication. Then, a start value, a length value, a value of the number of repetitions, and the like are added to the copied code. The remaining operation to be performed is to generate the required carrier frequency. This is the frequency circuit 11
This is performed by setting predetermined data in the frequency counter 4.

A basic clock for driving the microprocessor 120 is input to the frequency circuit 114. The number of the basic clock is counted up to the set data, and when the value becomes the same, the output of the frequency counter 115 is inverted. It has become. By repeating this operation, a carrier frequency is created.

When transmitting the expanded code, first, the output of the pulse width counter 119 is set to “H” at the start of transmission, and the first data is set in the pulse width counter 119. After that, the data is subtracted one by one. The data
When it becomes "0", the output of the pulse width counter is set to "L". Then, the next data is set in the pulse width counter. Then, the same operation as described above is repeated.

The envelope curve of the emulated remote control signal is reconstructed. By taking the carrier frequency, the envelope curve, and the AND 130, it is possible to reconstruct the remote control signal. The reconstructed remote control signal drives the infrared light emitting diode 132 through the drive circuit 131, converts the electric signal to an optical signal, and transmits the signal to a television receiver or the like that operates with the emulated remote control transmitter. By doing so, the television receiver can be operated.

In this way, a reconfigurable remote control transmitter that can emulate several remote control transmitters, is easy to operate, and does not require interconnection or modification of the controlled devices is provided.

Problems to be Solved by the Invention However, in the method of learning keys as described above, SRAM is used.
If the capacity of 122 is constant, the number of keys that can be learned is limited, and if the number of keys that can be further learned is increased, the capacity of the SRAM 122 will increase, and it will be necessary to use an SRAM one rank higher,
In order to reduce the cost, it is necessary to reduce the SRAM capacity as much as possible in order to reduce the cost by integrating the microcomputer section and its peripheral circuits into one chip. Also, when the capacity of the SRAM is increased, the number of address lines of the SRAM is increased, and the design of the printed circuit board is actually complicated. Therefore, an object of the present invention is to provide a learning remote control transmitter in which the amount of SRAM per key required to register a learned pulse code string is reduced.

Means for Solving the Problems In order to solve the above-mentioned problems, pulse width data composed of 2 bytes in the order in which the pulse code sequence was received, which is a conventional method of registering a pulse code sequence, is composed of 4 bits. In the learning remote controller of the present invention, a pulse code string constituting a remote control signal is converted into a head pulse block, a data pulse block, a trailer block, etc., in order to further advance compression. Are divided into several blocks, and the pulse numbers are arranged in the pulse code train in the order of the frequency of use. The block composed of only the first and the other pulse numbers with the high frequency of use is referred to as a data pulse block. It is assumed that 1-bit “1” and “0” numbers are assigned to the two types of pulse numbers constituting the data pulse block. By re-registering the data pulse block, the data pulse block, which has conventionally been constituted by a set of 4-bit pulse numbers, is now constituted by a set of 1-bit pulse numbers in the present invention. Thus, the memory registration capacity per key can be greatly reduced.

Therefore, according to the present invention, at the time of registering a remote control code, a data pulse block composed of two or less types of pulse numbers including frequently used pulse numbers is determined.
By registering two types of pulse signals composed of one bit for the registration of the data pulse block, the memory capacity required for registering the data pulse block can be greatly reduced, and an IC having the same memory capacity can be obtained. In this case, the number of keys that can be learned can be greatly increased, and the memory use cost per key can be reduced.

Embodiment The configuration and operation of an embodiment of a learning remote control transmitter according to the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a remote control transmitter to be emulated. The light-emitting unit 2 of the remote control transmitter 1 is arranged to face the PIN diode 12 of the learning remote control transmitter 11 of the present invention, and the mode changeover switch 25 of the learning remote control transmitter 11 is set to the normal mode 26 (this learning remote control transmitter 11). If you press 24 of 11,
The mode is switched from a learned predetermined remote control signal transmission mode to a learned mode 27 (a mode for learning a signal of the remote control transmitter 1 to be emulated to a specific key 24 of the learning remote control transmitter 11), and the learning remote control transmission is performed. The display circuit 21 confirms that the machine 11 has entered the learning mode 27. After that, the key 3 of the remote control transmitter 1 to be emulated is pressed to transmit the optical signal 4 from the light emitting unit 2.

The transmitted optical signal 4 is the PIN of the learning remote control transmitter 11.
Received by the diode 12.

The PIN diode 12 is a photoelectric conversion element that converts the optical signal 4 from the remote control transmitter 1 to be emulated during the learning mode into an electric signal. The converted electric signal faithfully amplifies the input signal. The signal is sent to the preamplifier unit 13.

The signal output from the preamplifier 13 is divided into a frequency circuit 14 and a waveform shaping circuit 17, which are the next circuits.

First, the frequency circuit 14 is a circuit that measures the frequency of a pulse in each burst of a pulse group (hereinafter referred to as a carrier frequency as in the prior art) by the frequency counter 15 inside the frequency circuit 14 in the learning mode. Is a basic clock generation circuit 23 for driving the microprocessor 20
The carrier frequency is measured by measuring the number of clocks output from the. In the normal mode, when the key 24 of the learning remote control transmitter 11 is pressed, the carrier frequency is generated only by setting the value of the carrier frequency measured and stored in the learning mode in the frequency counter 15.

In the frequency circuit 14, in the learning mode, the preamplifier 13
The carrier frequency of the remote control signal output from is measured, and the carrier frequency is output to the latch circuit 16 and latched simultaneously with the completion of the measurement.

The remote control signal output from the preamplifier 13 enters a waveform shaping circuit 17 which extracts the envelope curve of the remote control signal, which is another circuit. Its waveform shaping circuit 17
Is a pulse signal from which the carrier frequency component of the remote control signal has been removed, enters the counter 19 of the next pulse width circuit 18, and has a pulse width T1H, T1 shown in FIG.
L, T2H, T2L, T3H, T3L ... are measured in order and each pulse width 2
The data is stored in a random access memory 22 (hereinafter referred to as an SRAM) in units of bytes as shown in FIG. 2 (b).

Next, a method of measuring the pulse width of the remote control signal will be described with reference to FIGS. 2 (a), (b) and (c).
A change in the envelope curve input of the remote control signal, that is, the rising edge of the pulse of the remote control signal is detected, and an interrupt 28 is issued to the microprocessor 20. After that, immediately start counting the number of divided clocks (in this case, divided by 16) obtained by dividing the clock output from the basic clock generating circuit 23 that drives the microprocessor 20 by the dividing circuit 29. Then, measurement of the pulse width T1H is started. That is, “pulse width = count number of clock”. Then, at the same time as the pulse falls,
The interrupt 28 is again applied to the microprocessor 20.
Immediately thereafter, the microprocessor 20 stops counting the frequency-divided clock, immediately captures the data of the measured pulse width T1H in the SRAM 22 in a work area having a capacity of about 500 bytes, and stores the data.

Further, the data of the counter 19 of the pulse width circuit 18 is immediately cleared, and the counting of the next pulse width T1L is started. The microprocessor 20 waits for time until the next pulse T2H rises, or is doing other work. The counter is stopped at the next rising edge of the pulse T2H, and the data of the pulse width T1L of the envelope curve is taken into the work area of the SRAM 22 in the same manner as described above. In this way,
The counting is performed until the work area of the SRAM 22 becomes full, and the work of storing the count is continued. At the same time, the data of the carrier frequency measured by the frequency circuit 14 is transferred to the SRAM
Take in 22 predetermined areas. This completes the capture of data from the remote control transmitter to be emulated.

For the following description, as in the prior art, the portion of the remote control signal on which the carrier frequency rides is called a mark, and the portion without the carrier frequency is called a space. In other words, the data of the remote control signal starts from the mark, and alternates between the space and the 2-byte data in the SRAM22.
Is written in the work area.

Next, a method of compressing the data taken in the work area of the SRAM 22 and registering the data in the memory will be described. First compression of the envelope curve data of the remote control signal taken in the work area of the SRAM 22 is performed by the mark and the space. Is regarded as one unit, and classified into several groups of pulse widths, and a pulse number composed of 4 bits in the classified pulse width group (in hexadecimal notation)
1, 2,..., A, B, C,..., E, and replaces the 2-byte data stored in the work area with the pulse number.

For this purpose, first, the mark and space data taken into the work area of the SRAM 22 is converted into mark and mark + space data (the mark + space is called a period as in the prior art) as shown in FIG. 2 (c). Replace and re-register.

Next, a method of classifying the pulse width will be described with reference to FIG.

The classification of the pulse width is performed to categorize the marks and periods into several pulse numbers, and group the groups so that all the marks and periods within a certain nominal range are properly classified into a certain number. Then, the lower limit, the intermediate value, and the upper limit are determined.

That is, the upper limit and the lower limit of the mark and the period are set for each of the pulse numbers 1, 2, 3,... Used. Next, as shown in FIG. 4 (a), the data stored in the work area is compared with the upper limit value and the lower limit value, and replaced with data of an intermediate value. , 2, 3,..., And the pulse number is set to an intermediate value which is a representative value of 2-byte width data of a mark and a period.

FIG. 4B is an explanatory diagram showing the remote control signal as a pulse signal.

In this way, the first compression is performed by replacing the mark and space composed of each 2 bytes of the remote control signal with the pulse number composed of 4 bits.

In the next compression, the encoded remote control data, that is, the data of each data, must be further compressed.
The data must carry all the important data so that the infrared signal can be correctly reconstructed during transmission.

FIG. 5 shows the compression process. This process is also a process of omitting a repeated code in the remote control code. The first number is compared with the second number, and if they do not match, the first two numbers and the next two
To one number. If the two numbers do not match again, the first three numbers are compared with the next three numbers. In this way, the comparison is continued by incrementing by one number until the first half of the number stored in the work area is compared with the other half stored. Still, if no match is found, the comparison is repeated from the beginning, but the first number is omitted, and if no match is found, the next second is omitted. FIG. 5A shows the numbers without head signals. “12121212121
Therefore, the pulse number sequence "121212121212" and the fact that the first pulse number of the repetition part is the 0th may be stored.

FIG. 5B shows a case where there is a head number, where "12" is a head signal and "3435" is a repetition signal. Therefore, “1
It is sufficient to store the pulse number sequence “23435” and the second pulse number at the beginning of the repetition portion. Thus, the remote control data is compressed.

With the compression up to this point, the acquired width pulse data consisting of 2 bytes was compressed so that it could be composed of 4 bits.
This is the same as the conventional compression means, and the present invention further compresses the compressed remote control data (remote control code).

Generally, the remote control code is shown in FIG. 6 (1), (2),
As shown in (3), it is composed of four types of blocks.
That is, a head pulse block meaning start,
It is composed of four types: a data pulse block indicating data, a trailer pulse block indicating end, and a repetition pulse block indicating repetition.

Within this block, the data pulse block is composed of two types of pulse width codes, which means the function of the remote control code, which is the most important data, and is composed of a set of binary data "1" and "0". ing.

At present, the data length of the data pulse block is increased by increasing the functions of the remote control code.

FIG. 7 is an explanatory diagram of a method of recompressing a remote control code according to the present invention. The most frequently used data pulse block in the remote control code is further compressed to thereby increase the memory registration capacity of the remote control code per key. Can be greatly reduced. First, a method of extracting a data pulse block of a remote control code will be described.
FIG. 7 (A) shows a pulse code string before data compression according to the present invention, in which pulse width data composed of 4 bits are arranged in order of frequency of use, and pulse width data 1 of frequency of use 1 Only number 2 and number 1 or number 1 and another
The compression process is performed on the assumption that a block composed of only one block is a data pulse block. In FIG. 7 (A), the pulse number that is most frequently used is “01”, the second is “02”, and the data pulse block is represented by pulse numbers “01” and “02”. Since a block always includes only two or less types of pulse numbers, a point where a different pulse number comes becomes a boundary bit with a data pulse block. This is shown in FIG. 7 (B).

The data pulse block of the remote control code compressed as described above is extracted, and a code indicating a predetermined 4-bit data pulse block is inserted. In this example, if "1111"('F' in hexadecimal) is used, the compressed remote control code is as shown in FIG.
It is represented as

Next, a method of compressing the data pulse block will be described. Note that the extracted data pulse block is composed of two or less pulse width codes.
Two types of pulse width data are assigned to one bit of “0” or “1”. In FIG. 7 (D), "0" is "01" and "1" is "0".
It shows the result of compression by rewriting the data pulse block by assigning it to 2 '. By this conversion, information on the bit length of the data pulse is lost. Therefore, by storing the bit length of the data pulse block at the same time as the conversion as shown in FIG.
By using this method, the memory registration capacity of the data pulse block can be reduced to several bytes, even though it required 10 bytes or more.

Taking advantage of this, compressing the remote control code,
It is stored as a 4-bit head pulse, a trailer, and a data pulse block represented by a group of 1 bit.

That is, the emulated remote control signal stored in the work area of the SRAM 22 includes a data signal, carrier frequency data, pulse width data, a type of pulse number, a single-shot signal or a continuous signal, and the repetition starts from what pulse signal. The data is converted into data such as pulse width data in the data pulse block and bit length of the data pulse block.

Thus, the learning process and the storing process are completed. These steps are common to all keys in the emulated transmitter.

After the transmitter 11 has been configured as desired by the user, in order to utilize the transmitter, it is necessary to read, decompress, and transmit the required code. This is done by first identifying which key 24 has been selected so that the correct remote control data block for the key in SRAM 22 is addressed. When a key is pressed, the SRAM addresses of all remote control data blocks for that source are transferred to microprocessor 20. When a predetermined code is found from the code, a predetermined remote control data block is copied to the work area of the SRAM 22.

At the same time, the compressed code is expanded for remote control code duplication. Then, a start value, a length value, a value of the number of repetitions, and the like are added to the copied code, and a carrier frequency is generated by setting predetermined data in a frequency counter of the frequency circuit 14.

A basic clock for driving the microprocessor 20 is input to the frequency circuit 14, and the number of the basic clock is counted up to the set data, and the output of the frequency counter 15 is inverted when the value becomes the same. It has become. By repeating this operation, a carrier frequency is created.

In transmitting the expanded code, first, the output of the pulse width counter 19 is set to “H” at the start of transmission, and the first data is set in the pulse width counter 19. After that, the data is subtracted one by one. The data is “0”
The output of the pulse width counter is now “L”
To Then, the next data is set in the pulse width counter. Then, the same operation as described above is repeated.

The envelope curve of the emulated remote control signal is reconstructed. By taking the carrier frequency, envelope curve, and AND30, it is possible to reconstruct the remote control signal. The reconfigured remote control code is
By driving the infrared light emitting diode 32 through the drive circuit 31, the signal is transmitted as a remote control signal to a television, a video or the like.

In this way, a reconfigurable remote control transmitter that can emulate several remote control transmitters, is simple to operate, and does not require interconnection or modification of the controlled equipment is provided.

According to the above embodiment, a data pulse block is extracted from a pulse code sequence obtained by compressing a remote control signal, and the data pulse block is further compressed, so that the pulse number of the most frequently used pulse width data is obtained. Since it is possible to compress from 4 bits to 1 bit, the memory capacity required for registering the data of the emulated remote control code can be reduced, and it can be handled with a fixed memory capacity (for example, 64 k bits). Can greatly increase the number of keys that can be
With a one-chip microcomputer with a built-in RAM, the number of keys that can be learned was from about 20 to 30 keys, but it became more than 50 keys, so it was possible to greatly improve the function at the same cost and if the functions were the same, until now Since there was no general-purpose one-chip microcomputer with a large memory, the learning remote control transmitter was composed of three chips using a microcomputer, a gate array, an SRAM and a dedicated IC. This enables the conventional general-purpose one-chip microcomputer to have the same function.

This compression method becomes more effective as the data pulse block becomes longer. In addition, the data pulse block and the trailer are alternately provided as in a remote controller with a timer reservation function for video, and the content of the data pulse block is one. If one is different, the compressed registration can be performed in the same manner as described above by setting a predetermined 4-bit pulse reservation number to a plurality.

According to the present invention, as is apparent from the above embodiment, the registration of the pulse code sequence is divided into blocks, the data pulse blocks are extracted, and the data pulse blocks are displayed with one bit and two types of pulse numbers. As a result, the data registration capacity can be greatly reduced, and the memory capacity used for the learning remote control transmitter can be reduced by one rank to an integrated circuit. A remote control signal having a long pulse code string, which has not been provided, can also be adapted to a long remote control signal by reducing the memory registration capacity per key.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a learning remote control transmitter according to the present invention, FIG. 2 (a) is an explanatory diagram of the remote control signal, and FIG.
FIG. 2B is a work area diagram illustrating a method of capturing pulse width data of a remote control signal, FIG. 2C is a work area diagram illustrating a method of reregistering the captured data, and FIG.
FIG. 4 is an explanatory diagram of a method of classifying a pulse width of a remote control signal used in the present invention. FIG. 4 (a) is an explanatory diagram of a method of registering pulse width data used in the present invention, and FIG. 4 (b) is a remote control signal. FIG. 5 (A), (B).
FIG. 6 is an explanatory diagram of a method of detecting a repetitive portion of a remote control signal used in the present invention. FIGS. 6 (1), (2) and (3) are explanatory diagrams of a typical example of remote control code blocking, and FIG. FIG. 7 is an explanatory diagram of a method of compressing a remote control signal according to the present invention;
FIG. 7A is an explanatory diagram of the state of the pulse code train before compression, FIG. 7B is an explanatory diagram of the result of performing the block division of FIG. 7A, and FIG. FIG. 7D is a state explanatory view of the result of replacing the data pulse block with the preset pulse number in the data pulse block of FIG. 7B. FIG. 7D re-registers the data pulse block of FIG. FIG. 7 (E) is a state explanatory view of valid bit storage of the data pulse block of the above (D), FIG. 8 is a configuration diagram of a conventional learning remote control transmitter,
FIG. 9 (a) is an explanatory diagram of the remote control signal, and FIG. 9 (b)
FIG. 9 (c) is a work area diagram illustrating a method of re-registering the captured data, and FIG. 10 is a work area diagram illustrating a method of re-registering the captured data. FIG. 11 (a) is an explanatory diagram of a method for registering the same pulse width data, FIG. 11 (b) is an explanatory diagram showing a remote control signal by a pulse number, and FIG.
FIGS. 12A and 12B are explanatory diagrams of a method of detecting a repeated portion of the remote control signal. 11… Learning remote control transmitter, 12… PIN diode, 14
... frequency circuit, 18 ... pulse width circuit, 20 ... microprocessor, 22 ... SRAM, 24 ... key part, 31 ... drive circuit, 32 ... light emitting diode.

Claims (2)

(57) [Claims] 1. A receiving means for receiving a remote control signal of a remote control transmitter to be emulated in a learning mode, a frequency for measuring a carrier frequency in each burst of the remote control signal, and generating a carrier frequency when reconfiguring the remote control signal. Circuit, a pulse width circuit that measures the pulse width of each pulse of the envelope curve after removing the carrier frequency from the remote control signal, and outputs the envelope curve of the remote control signal at the time of reconstructing the remote control signal; Connected to the outputs of the pulse width circuit and the frequency circuit, the pulse width measured by the pulse width circuit is classified for each pulse width, converted into a corresponding pulse number, stored, and emulated by the remote control transmission. Program to reconstruct compressed remote control signals corresponding to each key pressed on the machine And microprocessor means, which,
Memory means for storing the compressed remote control signal and addressed by the microprocessor means; and transmitting means for transmitting the remote control signal for controlling the selected remote controlled product or appliance controlled by the microprocessor means The microprocessor means further classifies the compressed, remote control signal composed of pulse numbers into data blocks in which the same pulse number as a header block having no repetition of pulse numbers appears repeatedly, and the data A learning remote control transmitter characterized in that only blocks are recompressed and stored. 2. A pulse number constituting a remote control signal is arranged in an order of high frequency of use, and a block composed of only a pulse number of high frequency of use and another pulse number following the number is defined as a data block. In the remote control signal, at least one is determined, the data block is replaced with a predetermined determined pulse number, the remote control signal is re-registered, and the data block is
2. The learning remote control transmitter according to claim 1, wherein re-compression is performed with 1-bit data of "1" and "0", and the length of the data block is stored.