JPH08182079A - Learning remote command transmitter - Google Patents

Abstract

PURPOSE: To provide a learning remote command transmitter not requiring a conventional complicated circuit and control software. CONSTITUTION: A program provided to a microprocessor 51 measures a time width of an envelope pulse 71 of a signal from which a carrier frequency signal is eliminated and the resulting signal is processed and processes coding. Then a carrier frequency 79 is decided based on a pulse width time 77 processing the coded data 76 and added to the envelope pulse to provide an output of a remote control waveform 64.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a learning remote control transmitter for learning and reproducing remote control signals from a plurality of transmitters.

[0002]

2. Description of the Related Art FIG. 4 shows a block configuration of a conventional learning remote control transmitter. In FIG. 4, the microprocessor circuit 1 drives and controls the key matrix circuit 2,
Moreover, by processing the signal input from the key matrix circuit 2, controlling the memory circuit 3, and controlling the frequency circuit 4 and the pulse width circuit 5, the signal output from the receiving circuit 6 is read and transmitted. The circuit 7 outputs a remote control signal for controlling an external device such as a television receiver.

FIG. 5 shows a part of the internal program structure of the microprocessor circuit 1 of the conventional learning remote control transmitter. In FIG. 5, the key scan input / output unit 8 is
The key matrix circuit 2 connected to the microprocessor circuit 1 of FIG.
And the data creation / writing unit 10.

The memory input / output unit 11 is connected to the data reading unit 9 and the data creating / writing unit 10, and controls the memory circuit 3 connected to the microprocessor circuit 1 of FIG. The carrier frequency setting unit 12 is connected to the data reading unit 9, the data creating / writing unit 10, and the frequency circuit input / output unit 13. Frequency circuit input / output unit 13
Controls the frequency circuit 4 connected to the carrier frequency setting unit 12 and connected to the microprocessor circuit 1 of FIG. The pulse width setting unit 14 is connected to the data reading unit 9, the data creating / writing unit 10, and the pulse width circuit input / output unit 15, and controls the pulse width circuit 5 connected to the microprocessor circuit 1 of FIG. .

Next, the operation of the conventional learning remote control transmitter will be described. FIG. 6 shows an example of detailed operation of a conventional learning remote control transmitter. In FIG. 6, when a designated key SW6 of the key matrix circuit 2 is pressed, the key scan input / output unit 8 recognizes that the key SW6 of the key matrix circuit 2 is pressed, and the key number 17
Is output to the data creation / writing unit 10. The data creation / writing unit 10 recognizes the input key number 17 and sets the learning operation for the subsequent processing.
Next, the transmission signal 18 of the remote control transmitter to be learned is transmitted to the receiving circuit 6. The reception signal 19 that has passed through the reception circuit 6 is input to the frequency circuit 4 and the pulse width circuit 5, respectively. The frequency circuit input / output unit 13 controls the frequency circuit 4 connected to the outside of the microprocessor circuit 1,
The carrier frequency included in the reception signal 19 is read as the carrier frequency width 20. The carrier frequency setting unit 12 converts the carrier frequency width 20 output from the frequency circuit input / output unit 13 into frequency data 21 and outputs the frequency data 21 to the data creation / writing unit 10. In parallel, the pulse width circuit input / output unit 15 controls the pulse width circuit 5 connected to the outside of the microprocessor circuit 1 to receive the received signal 19
Is read as the envelope pulse 22. The pulse width setting unit 14 sequentially measures the time width of the envelope pulse 22 output from the pulse width circuit input / output unit 15 for each pulse, and sequentially outputs the pulse width time 23 to the data creation / writing unit 10. The data creation / writing unit 10 converts the frequency data 21 output from the carrier frequency setting unit 12 and the pulse width time 23 data sequentially sent from the pulse width setting unit 14 into a predetermined number of bytes of data. The converted data is output to the memory input / output unit 11 as coded data 24. The memory input / output unit 11 sequentially outputs the coded data 24 sent from the data creation / writing unit 10 to the memory circuit 3 connected to the outside of the microprocessor circuit 1.

In the above process, the transmission of the transmission signal 18 of the remote control transmitter to be learned is completed, or the memory input / output unit 11 sets the external memory circuit 3 for the designated key SW6. It continues until the data writing range is exceeded. The learning operation for the key SW6 designated above is completed.

Next, when the designated key SW3 of the key matrix circuit 2 is pressed, the key scan input / output unit 8
Recognizes that the key SW3 of the key matrix circuit 2 has been pressed, and sets the key number 25 to the data reading unit 9
Output to. The data reading unit 9 recognizes the input key number 25 and sets the learning reproduction for the subsequent processing. The data reading unit 9 calculates the address 26 in which the data corresponding to the input key number 25 is stored and outputs it to the memory input / output unit 11. The memory input / output unit 11 sequentially reads the data stored in the area corresponding to the input address 26 with respect to the memory circuit 3 connected to the outside of the microprocessor circuit 1. The read data is output to the data reading unit 9 as coded data 27. The data reading unit 9 sequentially converts the input coded data 27 into frequency data 28 and pulse width time 29, and outputs them to the carrier frequency setting unit 12 and pulse width setting unit 14. The carrier frequency setting unit 12 converts the frequency data 28 sequentially output from the data reading unit 9 into a carrier frequency width 30 and outputs it to the frequency circuit input / output unit 13. The frequency circuit input / output unit 13 drives the frequency circuit 4 connected to the outside of the microprocessor circuit 1 and controls it to output a carrier frequency 31 corresponding to the input carrier frequency width 30. In parallel, the pulse width setting unit 14 outputs the envelope pulse 32 to the pulse width circuit input / output unit 15 by sequentially processing the pulse width time 29 output from the data reading unit 9. The pulse width circuit input / output unit 15 drives the pulse width circuit 5 connected to the outside of the microprocessor circuit 1, and outputs the envelope pulse 32 output from the pulse width setting unit 14 and the frequency circuit 4
The carrier frequency 31 output by the above is synthesized, and the remote control waveform 33 is controlled to be output. The transmission circuit 7
The remote control waveform 33 output from the pulse width circuit 5 is converted into a light signal and transmitted as a remote control signal 34. The learning reproduction for the designated SW3 is completed.

In this way, the conventional learning remote control transmitter can also learn and reproduce arbitrary remote control signals from a plurality of individual transmitters.

[0009]

However, in the conventional learning remote control transmitter as described above, the frequency circuit 4 and the pulse width circuit 5 are required, so that the circuit becomes complicated, and the frequency circuit 4 and the pulse width circuit 5 are provided. Since the microprocessor circuit 1 controls the above, there is a problem that the software for control becomes complicated.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a learning remote control transmitter capable of simplifying a circuit and eliminating complicated control software. To do.

[0011]

In order to solve the above problems, a learning remote control transmitter according to the present invention comprises a receiving circuit for receiving a transmission signal from the remote control transmitter to be learned in a learning mode, and the receiving circuit. The carrier is removed from the pulse group of the transmission signal of the remote control transmitter, the carrier removal circuit that outputs only the envelope pulse of the transmission signal, and the time width of each envelope pulse output from the carrier removal circuit is measured. A microprocessor circuit that encodes the time width according to the length, analyzes the arrangement and length of the encoded data to determine the carrier frequency, adds this carrier frequency to the envelope pulse of the remote control signal, and outputs it. A memory circuit for storing the coded data under the control of the microprocessor circuit, A transmitter circuit that outputs a control signal for controlling the external device to an external device under the control of the microprocessor circuit, and a key number corresponding to the designated key is input under the control of the microprocessor circuit. And a key matrix circuit that operates.

[0012]

According to this structure, the microprocessor circuit measures and encodes the time width of the envelope pulse of the signal processed by removing the carrier frequency by the carrier removing circuit, and encodes the encoded data into the processed pulse width time. Based on this, the carrier frequency is determined, and this carrier frequency is added to the envelope pulse of the remote control signal and output.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A learning remote control transmitter according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block configuration of a learning remote control transmitter of this embodiment. In FIG. 1, a microprocessor circuit 51 drives and controls a key matrix circuit 52, processes a signal output from the key matrix circuit 52, controls a memory circuit 53, and
The signal from the carrier removal circuit 54 is read and processed, and the remote control signal is output from the transmission circuit 56.

FIG. 2 shows a part of the internal program configuration of the microprocessor circuit 51 of the learning remote control transmitter of this embodiment. In FIG. 2, a key scan input / output unit 57 drives and processes a key matrix circuit 52 connected to the microprocessor circuit 51 of FIG. 1, and is connected to a data reading unit 58 and a data creating / writing unit 59. The memory input / output unit 60 is connected to the data reading unit 60 and the data creation / writing unit 59, and drives the memory circuit 53 connected to the microprocessor circuit 51 of FIG. The envelope pulse creating unit 61 is connected to the data reading unit 58 and the carrier frequency creating unit 63, and creates the remote control waveform 64. The pulse width time measuring unit 65 is connected to the envelope pulse input unit 66 and the data creating / writing unit 59, and measures the received waveform 67 from the carrier removing circuit 54 connected to the microprocessor circuit 51 of FIG. is there.

Next, the operation of the learning remote control transmitter of this embodiment will be described. FIG. 3 shows an example of detailed operation of the learning remote control transmitter of the present embodiment. In FIG. 3, a designated key Sw6 in the key matrix circuit 52 is designated.
When is pressed, the key scan input / output unit 57 recognizes that the key SW6 of the key matrix circuit 52 is pressed, and outputs the key number 68 to the data creation / writing unit 59. The data creation / writing unit 59 recognizes the input key number 68 and sets the learning operation for the subsequent processing.

Next, the transmission signal 69 of the remote control transmitter to be learned is transmitted to the receiving circuit 55. The received signal 70 having the carrier component remaining after passing through the receiving circuit 55 is input to the carrier removing circuit 54. The carrier removing circuit 54 removes the carrier component from the received signal 70 and receives the waveform 67.
To the envelope pulse input section 66 in the microprocessor circuit 51. Envelope pulse input section 6
6 processes the received waveform 67 and outputs an envelope pulse 71.
Is output to the pulse width time measuring unit 65. The pulse width time measuring unit 65 sequentially measures the time width of the envelope pulse 71 for each pulse, and sequentially outputs the pulse width time 72 to the data creation / writing unit 59. Data creation / writing section 59
Converts each data of the pulse width time 72 sequentially sent from the pulse width time measurement unit 65 into data of the number of bytes determined according to the time width, and as the coded data 73, the memory input / output unit 60. Output to. Memory input / output unit 6
0 sequentially outputs the coded data 73 sent from the data creating / writing unit to the memory circuit 53 connected to the outside of the microprocessor circuit 51.

In the above processing, the transmission of the transmission signal 69 of the remote control transmitter to be learned is completed, or the memory input / output unit 6
0 indicates the designated key SW for the external memory circuit 53
It continues until the data write range set for 6 is exceeded. The learning operation for SW6 designated above is completed.

Next, when the designated key SW3 of the key matrix circuit 52 is pressed, the key scan input / output unit 57 causes the key SW3 of the key matrix circuit 52 to be pressed.
When the key is pressed, the key number 74 is output to the data reading unit 58. The data reading unit 58 recognizes the input key number 74 and sets the learning reproduction for the subsequent processing. The data reading unit 58 calculates an address 75 at which data corresponding to the input key number 74 is stored and outputs it to the memory input / output unit 60. The memory input / output unit 60 is the microprocessor circuit 5
The data stored in the area corresponding to the input address 75 is sequentially read from the memory circuit 53 connected to the outside of 1. The read data is output to the data reading unit 58 as coded data 76. The data reading unit 58 sequentially converts the input coded data 76 into a pulse width time 77 and outputs the pulse width time 77 to the envelope pulse generation unit 61 and the carrier frequency determination unit 62. The carrier frequency determining unit 62 determines the carrier frequency by analyzing the pulse width time 77 sequentially output from the data reading unit 58 at a plurality of designated pulse positions, and outputs the frequency data 78 to the carrier frequency creating unit 63. To do. The carrier frequency generation unit 63 processes the frequency data 78 input from the carrier frequency determination unit 62,
The carrier frequency 79 is output to the envelope pulse generator 61. The envelope pulse generation unit 61 processes the pulse width time 77 sequentially output from the data reading unit 58 to generate an envelope pulse, and synthesizes the envelope pulse with the carrier frequency 79 output from the carrier frequency generation unit 63 to generate a remote controller. The waveform 64 is output to the transmission circuit 56 connected to the outside of the microprocessor circuit 51. The transmission circuit 56 is the microprocessor circuit 5
Envelope pulse generator 6 connected to the inside of 1
Convert the remote control waveform 64 output from 1 into an optical signal,
It is transmitted as a remote control signal 80. S specified above
The learning reproduction for W3 ends.

As described above, according to the above-described embodiment, the complicated circuit of the conventional frequency circuit and the pulse width circuit is provided outside the microprocessor circuit 51, and the complicated software (frequency circuit input / output) for controlling the circuit. This has the advantage that a learning remote controller that does not require the section 13 and the pulse width circuit input / output section 15) can be configured.

[0021]

As described above, according to the present invention, the microprocessor circuit measures and encodes the time width of the envelope pulse of the signal processed by removing the carrier frequency by the carrier removing circuit, and encodes the encoded data. The carrier frequency can be determined on the basis of the pulse width time processed, and the carrier frequency can be added to the envelope pulse of the remote control signal and output.

Therefore, the circuit can be simplified and complicated control software can be eliminated.

[Brief description of drawings]

FIG. 1 is a block diagram of a learning remote control transmitter according to an embodiment of the present invention.

FIG. 2 is an internal configuration diagram of a microprocessor circuit of the same embodiment.

FIG. 3 is an explanatory diagram of an operation of the embodiment.

FIG. 4 is a block diagram of a conventional learning remote control transmitter.

FIG. 5 is an internal configuration diagram of a microprocessor circuit of the conventional example.

FIG. 6 is an explanatory diagram of an operation of the conventional example.

[Explanation of symbols]

 51 Microprocessor Circuit 52 Key Matrix Circuit 53 Memory Circuit 54 Carrier Removal Circuit 55 Receiver Circuit 56 Transmitter Circuit

Claims (1)

[Claims] 1. A reception circuit for receiving a transmission signal from a remote control transmitter to be learned in a learning mode, and a carrier for removing a carrier from a pulse group of the transmission signal of the remote control transmitter received by the reception circuit, the transmission signal. The carrier removal circuit that outputs only the envelope pulse and the time width of each envelope pulse output from the carrier removal circuit is measured, and the time width is coded according to the length, and the sequence and length of the coded data are measured. By analyzing the carrier frequency to determine the carrier frequency, by adding this carrier frequency to the envelope pulse of the remote control signal and outputting, by control from the microprocessor circuit,
A memory circuit that stores the coded data, a transmission circuit that outputs a control signal that controls the external device to an external device under the control of the microprocessor circuit, and a control from the microprocessor circuit A learning remote control transmitter having a key matrix circuit for inputting a key number corresponding to a designated key according to.