JP2003163979A - Apparatus having remote control function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio apparatus capable of efficiently writing data such as a correction program by a simple operation without moving the apparatus. <P>SOLUTION: The apparatus having the remote control function comprises a data writing unit 2 for transmitting an infrared signal including a data code to an infrared photodetector 17 for receiving a remote control signal from an infrared remote controller. The writing unit 2 transmits the infrared signal containing write data of data to be written in the photodetector 17. The format of the remote control signal is the same as that of the remote control signal of a command transmitted by an infrared remote controller, and can be received by the function provided originally in the audio apparatus. A confirming inverting code is eliminated and a data amount is increased, thereby improving a transmitting efficiency. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a data writing method in an apparatus having a remote controller control function of receiving a command signal from an infrared remote controller and controlling the operation thereof.

[0002]

2. Description of the Related Art An apparatus for controlling operation by a control unit such as a microcomputer controls the operation of the microcomputer by a control program stored in a built-in memory. However, there may be bugs in this control program. In such cases,
In the worst case, the memory is recreated and replaced, but in order to make it possible to fix the bug more economically and easily, a modification program that rewrites only the part of the control program where a bug exists is written to the device memory, and a part of the control program is written. The behavior of is being changed.

[0003]

In a conventional device for changing the operation by a correction program, as a means for writing the correction program, the device and the correction program writing device are connected by a cable to execute the correction program. I was trying to transfer to the device. However, since such a cable connector of the device is generally provided on the back surface of the device, it is inconvenient to move the device to expose the back surface when connecting the cable.

An object of the present invention is to provide a device having a remote controller control function capable of writing data such as a correction program by a simple operation without moving the device.

[0005]

According to the present invention, a receiving means for receiving a remote control signal in a consumer format including a data code of a plurality of bytes, a storage means, and the remote control signal received by the receiving means are inputted, In the mode, the multi-byte data code is recognized as command data and confirmation data for confirming the command data,
Processing means for executing a process corresponding to the confirmed command data and writing the data code of the plurality of bytes as write data of different contents in the storage means in the write mode. To do. Also, the present invention stores a control program in advance, a storage means for later storing a correction program for correcting a part of the control program, and a remote controller signal in a consumer format including a data code of a plurality of bytes. The receiving means and the remote control signal received by the receiving means are input, and in the normal mode, the data code of a plurality of bytes is recognized and confirmed as command data and confirmation data for confirming the command data. Control means for executing a process corresponding to the command data based on the control program, and for writing the data code of the plurality of bytes in the storage means as the correction program in the write mode. . This invention
In the above invention, a display means is provided, and the control means is
The confirmation information of the write data written in the storage means in the writing mode is displayed on the display means.

An apparatus having a remote controller control function of the present invention is provided with a receiving means for receiving a remote controller signal, and executes processing corresponding to a command transmitted from a remote controller by receiving the remote controller signal. In general, in home electric appliances, infrared rays are used as remote control signals, and in vehicles and the like, radio waves and ultrasonic waves are used as remote control signals.
In the present invention, data is written to the device using this remote control signal.

The format of the remote control signal transmitted by the remote control device includes command data for controlling the device, and the command data includes a data body and confirmation data for confirming the data body. The confirmation data is composed of, for example, inverted data obtained by inverting the data body. When the device receives this command data and confirms it with the confirmation data, the device executes the process corresponding to the command data.

On the other hand, in the write mode, a signal of the same format as the remote control signal (this signal is also referred to as remote control signal in this specification) is sent, but the data code at this time is not command data, but is written in the device. It is write data that is data to be written. In this case, this write data is written in the storage means. As a result, it is possible to write data in the device using the remote control device and increase the amount of data that can be transmitted by one remote control signal to perform writing efficiently.

Although the amount of write data to be transmitted is increased by transmitting the write data without the confirmation data, the data can be correctly received by displaying the confirmation information of the write data on the display. It is possible to judge whether or not it has been written. The confirmation information includes, for example, parity information.

The storage means for storing the control program and the correction program may be the same, for example, an EEPROM. The control program is stored in the mask ROM and only the correction program is stored in the EEPROM. The mask ROM and the EEPROM store the control program and the correction program. The means may be configured.

[0011]

1 is a block diagram of an audio apparatus and a data writing apparatus for writing a correction program in the audio apparatus according to an embodiment of the present invention. In FIG. 1A, the audio device 1 includes an audio circuit 15 for processing an audio signal and a servo mechanism 16 for controlling tracking of a CD head, and an infrared remote control device operated by a user (not shown). The infrared light receiving unit 17 for receiving the infrared remote control signal transmitted by (1). CPU 1 which is a control unit
0 controls the audio circuit 15 and the servo mechanism 16 based on the command data included in the remote control signal input via the infrared light receiving unit 17.

The CPU 10 includes the audio circuit 1
5, the servo mechanism 16 and the infrared light receiving unit 17 are connected, the mask ROM 19 and the EEPROM 1
1, the RAM 12, the operation unit 13, and the display unit 14 are connected. The mask ROM 19 stores a control program for controlling the operation of this device. Also, EEP
The ROM 11 stores a correction program, correction control data, and the like.

The CPU 10 executes a control operation according to a command input from the operation unit 13 or the infrared light receiving unit 17 according to a control program. Also, the CPU 10
When the power is turned on, the EEPROM 11 is checked, and if there is a correction program for correcting the control program, this correction program and the correction control data which is the parameter value on the control program according to the correction program are stored in the RAM.
Expand to 12. The modification program is a program that functions as a subroutine for the control program,
When the processing address on the control program reaches a predetermined start address, the processing is passed to the correction program, the correction program performs the predetermined processing, and then returns to the return address of the control program.

The data writing device 2 writes the correction program in the audio device 1. The data writing device 2 is a device that transmits an infrared signal in the same format as the infrared remote control device attached to the audio device 1, and transmits a correction program instead of command data as a data code of this infrared signal. This infrared signal is also called a remote control signal like the signal transmitted by the infrared remote control device.

The correction control data is composed of data written by the data writing device 2 similarly to the correction program, and data generated inside the audio device 1 in response to the writing of the correction program. Writing the correction program also includes writing the correction control data.

In FIG. 1B, the data writing device 2
Is CPU 20, ROM 21, LED driver 22, L
An ED 23, a switch 24 and an interface connector 25 are provided. The ROM 21 stores a correction program to be transferred to the audio device. This ROM 21
May be composed of a flash ROM, and the correction program may be written via the interface connector 25-CPU 20. Alternatively, the ROM in which the correction program is stored in advance may be inserted into the socket for setting.

The LED 23 is an infrared LED, and emits light having a wavelength that can be received by the infrared light receiving unit 17 of the audio device 1. Further, the LED driver 22 generates a carrier having a frequency (about 38 kHz) that can be demodulated by the infrared light receiving unit 17, superimposes the code input from the CPU 20 on this carrier, and applies the code to the LED 23.
When an attendant performs a predetermined operation on the switch 24, C
The PU 20 starts transfer of the correction program. At this time, the audio device 1 is also set to the writing mode by the operation of the staff member.

The format of the code transmitted from the LED 23 is, for example, as shown in FIG. This is the same as the code format for controlling home electric appliances transmitted by the infrared remote control device attached to the audio device 1 (FIG. 1B), and is readable as a normal function of the CPU 10.

This code format is called NE
This is a so-called C (trademark) remote control format, which includes a reader code, a custom code, and a data code. The reader code is a code for establishing synchronization with the infrared light receiving unit 17. The custom code is an identification code of the audio device 1 which is the device that should receive this remote control signal, and this identification code is set to a unique one different from other models so as not to cause a malfunction to other devices. There is. The custom code is defined as a 1-byte code such as 78 (Hex), and 2 bytes of this custom code and an inverted code for parity are transmitted. Various command data for controlling the audio device 1 are also defined as 1-byte code data, and 2 bytes of this command data and inverted data for parity of the command data are transmitted.

On the other hand, the remote control signal transmitted by the data writing device 2 is composed of the same reader code as above, a custom code similar to the above, and a 2-byte data code having no parity inversion code. This is similar to the signal of the infrared remote control device in that a code for identifying the audio device 1 is embedded as a custom code, but in that the correction program to be written in the audio device 1 as a data code is embedded in 2 bytes. Is different. The data writing device 2 can continuously transmit the remote control signal of this format at a predetermined interval such as 10 ms to transfer the correction program to the audio device 1 by 2 bytes.

FIG. 3 shows the mask RO of the audio device 1.
It is a figure explaining the memory content of M19 and EEPROM11. The control program 1 is stored in the mask ROM 19.
01, the EEPROM 11 is checked when the power is turned on, and if the correction program is stored, the load program 100 for expanding the correction program in the RAM 12 is stored.
Address monitoring program 10 which is a monitoring program for shifting the processing from the control program to the modification program while the modification program is being expanded in the RAM 12.
2 is stored. The address monitoring function may be realized by a function of microcomputer hardware other than the software realized in this way.

The EEPROM 11 has a control program 1
Fix programs 201 and 2 for correcting a part of 01
02 is stored. Each correction program 201, 202
Are start addresses 201a and 202 which are addresses on the control program to jump to this modification program.
a and return addresses 201b and 202b which are addresses on the control program to be restored when the processing of the correction program is completed. The fix is
It functions as a subroutine that bypasses the bug part of the control program, and the start address and return address are set to appropriate addresses immediately before and after this bug part. The correction program receives the process from the control program in the mask ROM 19 at the start address, executes the process, and returns to the return address of the control program.

The correction programs 201 and 202 are used for the mask ROM 1 after the audio device 1 is manufactured.
When a defect (bug) of the control program 101 in 9 is found, the data writing device 2 causes the EEPROM 1
It is written in 1. The timing of writing this correction program may be before or after the sale of the device, but it should be done by the staff at any time.

The control program 101 includes a write mode processing program 101a in addition to a program for controlling the audio reproducing function. When a staff member performs a predetermined operation on the operation unit 13 or the infrared remote control device, the CPU 10 writes a process to the program 101a.
And the operation mode is changed from the normal mode to the write mode. The normal mode is a processing mode for reproducing an audio source such as an audio CD, and the writing mode is a processing mode for writing the correction program in the EEPROM 11. In the operation in the normal mode, the content of the remote control signal received by the infrared light receiving unit 17 is decoded as command data for controlling the operation of the apparatus, and the operation control based on this is executed, but in the operation in the writing mode, the infrared light receiving unit is operated. The content of the remote control signal received by 17 is written in a predetermined area of the EEPROM 11 as a correction program. The operation of this writing mode will be described later.

After writing the correction program, when the power is turned off and then turned on again, the load program 100 is first activated to check the EEPROM 11. When the correction program is written in the EEPROM 11, the correction program including the start address and the return address and the correction control data are stored in the RA.
Expand to M12.

After the operation of the load program 100, the processing shifts to the control program, and the normal mode operation is started. In this normal mode operation, when the correction program is installed (when it is expanded in RAM12)
Monitors if the process has reached the start address,
When the process reaches the start address, it is interrupted to shift the process to the fix program.

In this apparatus, even when the power switch of the operation unit 13 is turned off, the CPU 10 and the RAM 12 are in the standby state in which the power is supplied when the power outlet is inserted, and the writing is performed. After operating in the mode, the power plug is removed once and the CPU1
0, after the power supply to the RAM 12 is cut off, when the power plug is again plugged into the outlet and the power is supplied, the load program 100
The correction program and the correction control data are expanded in the RAM 12.

FIG. 4 is a flow chart showing the work procedure for setting the audio device 1 in the write mode and writing the correction program. First, the operation unit 13 or the infrared remote control device (not shown) is operated in a predetermined sequence to set the operation mode of the audio device 1 to the writing mode (s
1). After that, the infrared LED 23 of the data writing device 2 is opposed to the infrared light receiving unit 17 of the audio device 1 and the switch of the data writing device 2 is turned on.
The correction program is transferred via the infrared light receiving unit 17. This transfer is a 2-byte transfer using the format of the remote control signal of the infrared remote control device as described above. When the transfer of all the data (correction program) is completed (s3), the checksum of the transferred data is displayed on the display unit 14 of the audio device 1 (s4). The clerk compares the displayed checksum with the correct checksum of the correction program known in advance, and if the displayed checksum is correct, the store button of the operation unit 13 (for example, an input switch button or a reproduction button) is displayed. Button is assigned as a store button in the write mode) is turned on (s6). Then, the CPU 10 of the audio device 1 stores the correction program buffered in the RAM 12 in a predetermined area of the EEPROM 11 (s7). By turning off the power, the operation in the write mode is completed. If the checksum is incorrect, the power is turned off without doing anything to end the write mode operation.

By thus displaying the checksum on the display unit 14 so that it can be confirmed whether the data (correction program) has been transferred correctly, even if the data cannot be verified by the inverted code, the data can be verified. The accuracy of the transfer can be guaranteed.

FIG. 5 is a flowchart showing the operation when a remote control signal is input from the infrared light receiving unit 17 of the CPU 10. When a remote control signal is input (s
10) First, check the custom code (s1)
1). The check of the custom code is a check of whether the custom code is correctly received, that is, whether the custom code body and the inverted code match. When the custom code is correctly received, it is determined whether the custom code is the custom code (for example, 78h) of this device (s12). If the code is a custom code for this device, it is understood that this remote control signal is a remote control signal addressed to this device. Then, it is determined whether the current mode is the normal mode or the write mode (s13). In the case of the normal mode, the 2-byte data code is regarded as the command data and the inversion command data, respectively, and it is determined whether or not they match (s
14). If they match, the process proceeds to the processing operation corresponding to this command data.

On the other hand, when the current mode is the write mode, the received 2-byte data code is buffered in the RAM 12 as a part of the correction program (s16).

If the received custom code does not match the inverted custom code, the custom code does not correspond to the own device, or the received command data does not match the inverted command data. , Do nothing and return.

FIG. 6 is a flow chart showing the operation of the load program when the power plug is inserted.
When the power plug is plugged into the outlet, EEPRO
It is determined whether or not there is data (correction program and correction control data) in M11 (s21), EEPROM
If the data such as the correction program is stored in 11, the data is read (s22) and it is verified whether this data is correct (s23). When the data is correct, this data is expanded in the RAM 12 (s24),
Address coincidence monitoring is set (s25), and the mode shifts to the normal mode.

If data such as a correction program is not stored in the EEPROM 11 or if the stored data is not correct, the normal processing is directly performed.

In this embodiment, the remote control signal in the NEC format has been described as an example, but the format of the remote control signal is not limited to this, and any format can be used as long as it transmits the inverted code of the command data. Applicable.

In this embodiment, the audio device has been described as an example, but the present invention can be applied to any device as long as it can be operated by the remote control device. Further, although the remote control signal of this embodiment is an infrared remote control signal, the remote control signal is not limited to infrared rays,
Media such as radio waves and ultrasonic waves can be used.

[0037]

As described above, according to the present invention, the receiving means for receiving the remote control signal from the remote control device can be used to write the data into the device, and in this case, the data is transmitted without the confirmation code. By doing so, the amount of data per remote control signal can be increased,
Data transmission can be made efficient. Further, in this case, by displaying the confirmation information of the data on the display, it is possible to confirm whether or not the data is correctly transmitted and written.

[Brief description of drawings]

FIG. 1 is a block diagram of an audio device and a data writing device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a format of a remote control signal received by the audio device.

FIG. 3 is a block diagram of a memory of the audio device.

FIG. 4 is a flowchart showing the operation of the audio device.

FIG. 5 is a flowchart showing the operation of the audio device.

FIG. 6 is a flowchart showing the operation of the audio device.

[Explanation of symbols]

1 ... Audio device, 2 ... Data writing device, 10 ... CP
U, 11 ... EEPROM, 12 ... RAM, 13 ... Operation part, 14 ... Display part, 15 ... Audio circuit, 16 ... Servo mechanism, 17 ... Infrared light receiving unit, 19 ... Mask RO
M, 20 ... CPU, 21 ... ROM, 22 ... Driver, 2
3 ... Infrared LED, 24 ... Switch, 25 ... Interface connector

Claims (3)

[Claims] 1. A receiving unit for receiving a remote control signal in a consumer remote control format including a data code of a plurality of bytes, a storage unit, and the remote control signal received by the receiving unit, and in the normal mode, the plurality of bytes are input. The data code of is recognized as the command data and the confirmation data for confirming the command data, and the process corresponding to the confirmed command data is executed. An apparatus having a remote controller control function, comprising: a processing unit that writes the write data to the storage unit. 2. A control program is stored in advance and a storage means for later storing a modification program for modifying a part of this control program, and a remote control signal of a consumer remote control format including a data code of a plurality of bytes are received. Receiving means for inputting the remote control signal received by the receiving means, and in the normal mode, the data code of a plurality of bytes is recognized and confirmed as command data and confirmation data for confirming the command data. A remote control control function, which executes a process corresponding to the command data based on the control program and writes the data code of the plurality of bytes as the correction program in the storage means in the write mode. Equipment. 3. The remote control according to claim 1, further comprising display means, wherein the control means displays confirmation information of write data written in the storage means in the write mode on the display means. A device with functions.