JP3643736B2 - Digital broadcast receiver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a digital broadcast receiver.
[0002]
[Prior art]
The digital broadcast receiver includes a remote control device. As shown in FIG. 6, the remote control device normally includes a key input unit 201, a microcomputer unit 202, and a transmission unit 203. The microcomputer unit 202 includes a microcomputer 211 and a non-rewritable ROM 212 that stores its control program, control data, and the like.
[0003]
In response to a key input from the key input unit 201, the microcomputer 211 reads a control program and control data in the ROM 212, executes predetermined processing according to the key input, and generates a transmission signal. This transmission signal is transmitted to the digital broadcast receiver main body via the transmission unit 203.
[0004]
In this way, the remote control device is controlled by the microcomputer unit, but if it is found that there is a bug in the control program stored in the ROM of the microcomputer unit, or the function of the digital broadcast receiver itself is expanded If it is necessary to expand the function of the remote control device in accordance with this, it is necessary to replace the ROM storing the control program.
[0005]
In the future, as the functions of the main body of digital broadcasting receivers diversify, the advancement of remote control devices such as two-way communication functions will be advanced, and the amount of control programs and control data for remote control devices will increase. The Accordingly, there is a high possibility that bugs will occur in the control program and control data. In addition, it is expected that the need for function expansion of the remote control device will increase along with the function expansion of the main body of the digital broadcast receiver.
[0006]
[Problems to be solved by the invention]
The present invention provides a digital broadcast receiver capable of changing a control program and control data without replacing a storage device provided in the remote control device and storing the control program and control data. For the purpose.
[0007]
[Means for Solving the Problems]
The digital broadcast receiver according to the present invention provides a control program and control data for controlling a remote control device of the digital broadcast receiver, in addition to a control program and control data for controlling the digital broadcast receiver body. A digital broadcast receiver in which update data is sent by broadcasting. The digital broadcast receiver main body is a rewritable non-volatile storage in which a control program and control data for controlling the digital broadcast receiver main body are stored. First memory, means for downloading update data for control program and control data for controlling the main body of the digital broadcast receiver, and update data for control program and control data for controlling the remote control device; Dow content Means for rewriting the both update data loaded, the update data for the control program and control data for controlling the remote control device in the first memory, based on a given command, means for transmitting to a remote control device, and a remote When the update data is transmitted to the control device, a message indicating that the data of the remote control device is being updated and that the power source of the digital broadcast receiver should not be shut off is sent to the digital broadcast receiver. Means for displaying on a display connected to the main body, and the remote control device is a rewritable non-volatile second memory in which a control program and control data for controlling the remote control device are stored; And digital broadcast receiver Et transmitted, it receives the update data for the control program and control data for controlling the remote con roll apparatus, characterized in that it comprises a means for rewriting the updated data received contents of the second memory.
[0008]
The control program for controlling the remote control device in the first memory and the update data for the control data are transmitted to the remote control device via, for example, a cable connecting the digital broadcast receiver body and the remote control device. .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention applied to a CS digital broadcast receiver will be described below with reference to the drawings.
[0010]
[1] Explanation of CS digital broadcast receiver configuration
FIG. 1 shows the configuration of a CS digital broadcast receiver.
[0012]
The CS digital broadcast receiver is composed of a receiver body and a remote control device.
[0013]
The broadcast wave is sent to the tuner unit 2 via the antenna and the antenna input terminal 1, and high frequency processing and demodulation are performed. The output from the tuner 2 is sent to the DEMUX unit 3 where the packet is decoded.
[0014]
In the DEMUX unit 3, the packet is classified into MPEG data and attached information. The MPEG data separated by the DEMUX unit 3 is sent to the AV decoding unit 4. The attached information separated by the DEMUX unit 3 is sent to the system control unit 10.
[0015]
The system control unit 10 includes a CPU 11, a boot ROM 12 for starting up the CPU 11, a flash memory 13 for storing a receiver main body control program and receiver main body data, and a DRAM 14 for storing necessary data. The CPU 11 is started up by the boot ROM 12 and executes a predetermined process by reading out the receiver main body control program and the receiver main body data stored in the flash memory 13.
[0016]
The CPU 11 stores the attached information and the like sent from the DEMUX unit 3 in the DRAM 14. The CPU 11 sends information for channel selection to the tuner 2 and the DEMUX unit 3.
[0017]
A remote control signal from the remote control device 100 is input to the CPU 11 via the remote control signal light receiving unit 6. Further, the data port 7 is connected to the CPU 11.
[0018]
The AV decoding unit 4 demodulates the MPEG data sent from the DEMUX unit 3. The video signal and audio signal obtained by the AV decoding unit 4 are sent to the AV output terminal 5.
[0019]
[2] Description of the configuration of the remote control device [0020]
FIG. 2 shows the configuration of the remote control device 100.
[0021]
The remote control device 100 includes a key input unit 101, a microcomputer unit 102, a transmission unit 103, and a data port unit 104. The microcomputer unit 102 includes a microcomputer 111 and a flash memory 112 that is a rewritable nonvolatile memory that stores a remote control program and remote control data.
[0022]
In response to the key input from the key input unit 101, the microcomputer 111 reads the remote control control program and the remote control data in the flash memory 112, executes predetermined processing according to the key input, and generates a transmission signal. To do. This transmission signal is transmitted to the system control unit 10 of the CS digital broadcast receiver via the transmission unit 103.
[0023]
The data port unit 104 is provided for receiving data from the system control unit 10 of the CS digital broadcast receiver.
[0024]
[3] Description of downloading of update data for receiver main body control program and receiver main body data and remote control program and remote control data
In this embodiment, in a specific frequency band, update data for the receiver main body control program and receiver main body data, and the remote control program and remote control data are transmitted by broadcasting.
[0026]
FIG. 3 shows a processing procedure executed by the system control unit 10 when downloading update data.
[0027]
First, when a download command is input by the user (step 1), tuning is performed in a frequency band in which update data exists (step 2). Then, the radio wave condition is acquired (step 3), and it is determined based on the acquired radio wave condition and the like whether or not the download can be normally performed (step 4).
[0028]
If it is determined that the download is not possible, the current download process is terminated.
[0029]
If it is determined that the download can be normally performed, the update data is acquired and stored in the DRAM 14 (step 5). When the acquisition of all update data is completed, the contents of the flash memory 13 are rewritten with the update data stored in the DRAM 14 (step 6).
[0030]
FIG. 4 shows the contents of the flash memory 13 in the system control unit 10.
[0031]
At the time of shipment of the CS digital broadcast receiver, as shown in FIG. 4A, the flash memory 13 stores the receiver main body control program and the receiver main body data 28. In FIG. 4A, the receiver main body data includes hardware control data, font data, and image data. The flash memory 13 has a free area 29.
[0032]
FIG. 4B shows a state in which downloaded update data is stored. The update data includes update data for the remote control program and remote control data in addition to the update data for the receiver main body control program and the receiver main body data.
[0033]
Therefore, the flash memory 13 stores the update data 30 'for the remote control program and the remote control data, in addition to the update data 28' for the receiver main body control program and the receiver main body data. Reference numeral 31 denotes an empty area.
[0034]
[4] Description of download of remote control program and update data for remote control data from receiver body to remote control device
The operation when the remote control control program and the update data for the remote control data stored in the flash memory 13 of the receiver body are downloaded to the remote control device 100 will be described.
[0036]
First, as shown in FIG. 5, the data port 7 of the receiver main body 51 and the data port 104 of the remote control device 100 are connected by a cable 61. In FIG. 5, reference numeral 52 denotes a television receiver connected to the receiver main body 51.
[0037]
By operating the remote control device 100, the user remotely issues a command for causing the system control unit 10 of the receiver main body 51 to download the remote control control program and update data for the remote control data to the remote control device 100. The control signal is received via the light receiving unit 6.
[0038]
Upon receiving this command, the system control unit 10 sends update data for the remote control program and remote control data stored in the flash memory 13 to the data port 7. As a result, the remote control program and the update data for the remote control data are sent to the microcomputer 111 in the remote control device 100 via the data port 7, the cable 61 and the data port 104.
[0039]
The microcomputer 111 rewrites the contents of the flash memory 112 with the update data sent from the system control unit 10.
[0040]
When the system control unit 10 is transmitting update data for the remote control program and the remote control data to the remote control device 100, the display unit of the television receiver 52, as shown in FIG. It is preferable to display a message indicating that the data of the remote control device 100 is being updated and that the power supply should not be turned off.
[0041]
【The invention's effect】
According to the present invention, the control program and the control data can be changed without replacing the storage device provided in the remote control device and storing the control program and control data.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a digital television broadcast receiver.
FIG. 2 is a block diagram showing a configuration of a remote control device.
FIG. 3 is a flowchart showing a processing procedure executed by the system control unit when downloading update data.
FIG. 4 is a schematic diagram showing the contents of a flash memory in the system control unit.
FIG. 5 is a schematic diagram showing a state in which the data port of the receiver main body and the data port of the remote control device are connected by a cable.
FIG. 6 is a block diagram showing a configuration of a conventional remote control device.
[Explanation of symbols]
10 System control unit 11 CPU
13 Flash memory 51 Receiver body 100 Remote control device 104 Data port unit 111 Microcomputer 112 Flash memory

Claims (2)

In addition to the control program for controlling the digital broadcast receiver main body and the update data for the control data, the control program for controlling the remote control device of the digital broadcast receiver and the update data for the control data are sent by broadcasting. A digital broadcast receiver,
The digital broadcast receiver itself
A rewritable nonvolatile first memory storing a control program and control data for controlling the digital broadcast receiver body,
Means for downloading a control program and control data for controlling the digital broadcast receiver body, and a control program and control data for controlling the remote control device;
Means for rewriting the contents of the first memory with both downloaded update data ;
Means for transmitting a control program for controlling the remote control device in the first memory and update data for the control data to the remote control device based on a given command ; and
When the above update data is sent to the remote control device, a message indicating that the data of the remote control device is being updated and that the power of the digital broadcast receiver must not be shut off is received by digital broadcast. It has a means to display on the display unit connected to the machine body ,
Remote control device
A control program for controlling the remote control device and a rewritable non-volatile second memory storing control data, and a control program for controlling the remote control device transmitted from the digital broadcast receiver main body Means for receiving update data for control data and rewriting the contents of the second memory with the received update data;
A digital broadcast receiver comprising:   Update data for the control program and control data for controlling the remote control device in the first memory is transmitted to the remote control device via a cable connecting the digital broadcast receiver body and the remote control device. The digital broadcast receiver according to claim 1.

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