JP2000165268A - Data receiver and its display control method - Google Patents

Abstract

(57) Abstract: The present invention relates to a data receiving apparatus, and can further reduce the time and effort required for restoring data reception as compared with the related art. A broadcast wave receiving state is detected and displayed on a display means (4), so that the viewer is displayed on the display means even if the receiving state deteriorates due to a change in the direction of the antenna (2). It is possible to easily recover the reception state by adjusting the direction of the antenna while observing the reception state, and thus it is possible to further reduce the time and effort required for restoring data reception as compared with the related art.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data receiving apparatus and a display control method therefor, and is suitably applied to, for example, a receiver for receiving data transmitted via a communication satellite in a digital satellite broadcasting system. .

[0002]

2. Description of the Related Art Conventionally, in a digital satellite broadcasting system, hundreds of channels of programs have been provided to users, and in addition to TV channels broadcasting television programs,
There are radio channels for broadcasting radio programs and music channels for broadcasting digital audio data reproduced from compact discs (CDs), which meet all user demands. A receiver of such a digital satellite broadcasting system is installed at each viewer's house, receives program data transmitted from a broadcasting station via a communication satellite, and transmits a program corresponding to the received program data to the viewer. To provide.

[0003] By the way, the receiver of the digital satellite broadcasting system stores in advance its main body operating program data for operating the main body of the receiver in an internal memory.
At the time of startup, the main body operation program data is read from the memory, and each circuit block in the receiver is operated based on the read main body operation program data.

[0004] When the main body operation program data needs to be rewritten after the receiver is installed at the viewer's home for the purpose of responding to the upgrading of the function of the main body of the receiver or the change of the broadcasting standard. There is. In this case, as a method of rewriting the main body operation program data, the receiver receives new main body operation program data transmitted from a broadcast station via a communication satellite, and stores the main body operation program data stored in a memory in advance. Program data
A method of rewriting the received new main body operation program data (hereinafter referred to as download) is adopted.

[0005]

However, in such a receiver, if the receiving condition deteriorates while the download is being executed, the rewriting of the main body operation program data cannot be continued. If the data rewriting fails, the function of the receiver itself may be impaired and the receiver may be in an unrecoverable state.

If the cause of the deterioration of the reception state is irregular weather such as rainfall, the download may be resumed after the weather recovers. However, if the antenna direction changes, the download may be stopped. In addition to the continuation being impossible, the receiver itself may not function. In this case, the viewer can no longer adjust the direction of the antenna, and there is a problem that there is no recovery means other than requesting repair of the receiver.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to propose a data receiving apparatus and a display control method thereof which can further reduce the time and effort required for restoring data reception as compared with the related art. It is.

[0008]

According to the present invention, there is provided a data receiving apparatus for receiving a broadcast wave and outputting data of a desired channel to an external device, comprising: an antenna for receiving the broadcast wave; Detection means for detecting the reception state of the received broadcast wave based on the data, and control means for displaying the reception state of the broadcast wave on an external display means are provided.

[0009] By detecting the reception state of the broadcast wave and displaying it on the display means, even if the reception state deteriorates due to a change in the direction of the antenna, the viewer can visually check the reception state displayed on the display means. The reception state can be recovered by adjusting the direction of the antenna.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 1, reference numeral 1 designates a receiving system of a digital satellite broadcasting system as a whole.
It comprises a receiver 3 and a monitor 4. The receiving system 1 receives a broadcast wave from a communication satellite (not shown) by an antenna 2 and receives the broadcast wave from a tuner 5 of a receiver 3.
To send to. The receiver 3 is a central processing unit (CPU)
Each circuit operates under the control of 6, and sends a received signal S 1 from the transponder selected by the tuner 5 to the demodulation circuit 7.

The demodulation circuit 7 demodulates the received signal S1 based on a predetermined method, and sends the resulting received data S2 to the error correction circuit 8. The error correction circuit 8 corrects the error of the received data S2, and sends the resulting received data S3 to the descramble circuit 9. The descrambling circuit 9 extracts the multiplexed data S4 of the contract channel from the received data S3 based on the encryption key information of the contract channel stored in the IC card (not shown) inserted into the receiver 3 body. To the demultiplexer 10.

The demultiplexer 10 outputs the multiplexed data S
4 are rearranged for each channel, a channel specified by the viewer is taken out, and the video data S5 is transmitted to the video decoder 11 and the audio data S6 is transmitted to the audio decoder 12. Video decoder 1
1 decompresses the video data S5 to decompress the video data S7 before compression and encoding, and sends it to the digital / analog (D / A) conversion circuit 13. D / A
The conversion circuit 13 converts the video data S7 into an analog signal, sends out the obtained video signal S8 to the monitor 4, and displays an image corresponding to the video signal S8 on the monitor 4.

The audio decoder 12 outputs the audio data S
6, the audio data S9 before compression encoding is restored by decompression decoding, and this is converted into a digital / analog (D /
A) Send to the circuit 14. The D / A conversion circuit 14 converts the audio data S9 into an analog signal, and obtains the resulting audio signal S1.
0 is sent to the monitor 4, and a sound corresponding to the sound signal S10 is output from a speaker (not shown) of the monitor 4.

As shown in FIG. 2, the flash memory 15 as a storage means includes a main body section 15A for storing main body operation program data for operating the main body of the receiver 3, and a download section for executing download. And a loader unit 15B for storing program data (ie, rewriting program data).
Incidentally, in the main body operation program data, a main body change flag indicating whether or not it is necessary to rewrite the main body operation program data is placed at the head.

The ROM 16 stores boot program data for selecting and starting one of the main body operation program data and the download program data stored in the flash memory 15. Therefore, when predetermined operation information is input from the operation unit 17, the CPU 6 reads the boot program data from the ROM 16, and reads the main body operation program data or the download program data from the flash memory 15 based on the boot program data.

When the CPU 6 reads out the main body operation program data, the CPU 6 controls the operation of each circuit based on the main body operation program data, thereby outputting the video and audio desired by the viewer from the monitor 4. Let it.
On the other hand, when reading the download program data, the CPU 6 reads the image data S1 for executing the download from the download program data.
By generating 1 and sending it to the monitor 4, an image corresponding to the image data S11 is displayed on the monitor 4.

By the way, the demultiplexer 10 as the data extracting means extracts the main body operation program data S14 from the multiplexed data S4 and sends it to the CPU 6 when the download is executed under the control of the CPU 6. The CPU 6 is configured to rewrite the main body operation program data stored in the flash memory 15 with new main body operation program data S14 supplied from the demultiplexer 10.

At the same time, the error correction code adding circuit 20
An error correction code is added again to the error-corrected reception data S3 sent from the error correction circuit 8, and the error-corrected reception data S15 to which the error correction code is added is sent to the comparison circuit 21. Comparison circuit 21 as detection means
Is obtained by comparing the received data S2 before error correction supplied from the demodulation circuit 7 with the received data S15 after error correction added with the error correction code supplied from the error correction code adding circuit 20. Error rate data S16 indicating the ratio of the error to S2 is calculated and sent to the CPU 6.

The CPU 6 calculates the error rate data S1
6 is the reception level data S indicating the reception level of the antenna 2
17 and sends it to the monitor 4, superimposing the reception level indicated by the reception level data S 17 on the image for executing the above-mentioned download, and displaying it on the monitor 4 to inform the viewer of the current reception level. It has been made like that.

Here, a download processing procedure using a GUI (graphical user interface) screen displayed on the monitor 4 will be described with reference to FIGS. The GUI screen W1 includes a “notification” icon 50 for displaying a predetermined message, a “various setting” icon 51 for performing various settings, a “reservation setting” icon 52 for performing reservation settings, and an “initial setting” for performing initial settings. Icon 53
Are displayed, and a "various settings" window 54 corresponding to the "various settings" icon 51 selected by the viewer's operation is displayed.

On the GUI screen W1, the CPU 6
The “various settings” window 54 is operated by the viewer.
When the "download" icon 55 is selected from among the icons displayed in the above, the GUI screen W2 is displayed next.
On the GUI screen W2, the CPU 6 displays a predetermined message "Checking whether download is possible."
Check whether download is possible. As a result, the CPU 6
Indicates that the GUI screen W
3 while it is determined that downloading is not possible, any one of the GUI screens W4 to W6
Move on to

GUI screen W3 moved from GUI screen W2
In step 2, the CPU 6 displays a predetermined message "Download information for improving the data of this model" on the screen, and when the "to next step" icon 56 is selected by the viewer, the GUI 6 The screen moves to the screen W10.

On the other hand, on the GUI screen W2, the CPU 6
Is the case where it is determined that downloading is not possible, and the reason is, for example, that an IC card is not inserted, or
If it is related to an IC card indicating that the C card is abnormal, the screen shifts to the GUI screen W4, and a predetermined message “Download is not possible due to contract conditions” is displayed on the GUI screen W4.

On the GUI screen W2, the CPU 6
Is the case where it is determined that downloading is not possible, and the reason is related to the main body operation program data such that the received data is not a new version of the main body operation program data or the main body operation program data itself does not exist. In some cases, GUI screen W5
And a predetermined message "No need to download because the software is already up-to-date" is displayed on the GUI screen W5.

Further, on the GUI screen W2, the CPU 6
Indicates that the download is impossible, and if the reason is that the reception level of the antenna 2 is low, the screen shifts to the GUI screen W6. In the GUI screen W6, the predetermined message “The antenna level is not sufficient. No, please check the installation of the antenna. "Is displayed. On these GUI screens W4 to W6, the CPU 6
When the "return" icon 60 is selected by the user's operation, the user returns to the GUI screen W1 and stops downloading or starts over from the beginning.

In the GUI screen W10, the CPU 6
A predetermined message "Download cannot be stopped halfway. Please wait for about 20 minutes with the power on. Do you want to download?" Is displayed and prompt the viewer to download. In this GUI screen W10, the CPU
6 indicates that when the “execute” icon 70 is selected by the viewer's operation, the antenna 2 immediately before the download starts
Judge whether the reception level of is higher than a predetermined level,
As a result, when it is determined that the reception level of the antenna 2 is equal to or higher than the predetermined level, the screen shifts to the GUI screen W11.
The screen moves to the screen W6. On the other hand, on the GUI screen W10, when the “do not perform” icon 71 or the “return” icon 60 is selected by the viewer operation,
The screen returns to the GUI screen W1.

On the GUI screen W11, the CPU 6
When downloading is started, a predetermined message “Downloading. Please wait for a while.” Is displayed on the screen, and the reception level being downloaded is displayed by a bar-shaped bar. In this GUI screen W11, when the CPU 6 executes the download and terminates the download, the CPU 6 moves to the GUI screen W12 and displays a predetermined message “Download completed successfully.” When the "OK" icon 75 is selected,
Display the initial screen of the changed new main body operation program data.

On the GUI screen W11, the CPU 6
Indicates that the GUI screen W
Go to step 15 and press the "OK" button to adjust the antenna. "
Is displayed. On the GUI screen W15, if the viewer determines that the deterioration of the reception state is due to irregular weather, the viewer waits until the weather recovers and the reception state returns to the original state. In this state, when the receiving state is recovered, the CPU 6 returns from the GUI screen W15 to the GUI screen W11 to resume the download.

On the other hand, if the viewer determines that the deterioration of the reception state is due to a change in the direction of the antenna 2, the viewer follows the instruction on the GUI screen W 15 to operate the operation unit 17.
Is pressed (not shown). By this viewer's operation, the CPU 6 shifts from the GUI screen W15 to a GUI screen W16 as an antenna level adjustment screen, and together with a predetermined message "Please adjust the direction of the antenna." Is indicated by a bar-like bar.

The viewer adjusts the reception level of the antenna 2 by adjusting the direction of the antenna 2 while watching the reception level displayed on the GUI screen W16.
Thus, when the viewer determines that the reception level of the antenna 2 has recovered, the viewer presses the enter button of the operation unit 17. In response to this, the CPU 6 terminates the GUI screen W16 which is an antenna level adjustment screen, and
Return to and restart the download.

On the GUI screen W11, the CPU 6
When the lid (not shown) for inserting the IC card is opened or the IC card is removed during execution of the download, the screen shifts to the GUI screen W17, and a predetermined message “insert the card and close the lid” is displayed. please."
Is displayed. In the GUI screen W17, when the viewer inserts the IC card and closes the lid in accordance with the displayed message, the viewer returns to the GUI screen W11 and resumes downloading.

Incidentally, the GUI screens W11, W15 and W
At 17, the CPU 6 turns off the power or resets a reset button (not shown) provided on the receiver 3 body.
Is detected, the download is restarted and the GUI screen W20 is displayed. This GUI
On the screen W20, the CPU 6 displays a predetermined message “Download will be performed”, and then moves to the GUI screen W11 to resume the download.

Here, the download processing procedure by the CPU 6 will be described. In step SP12 entered from step SP11, the CPU 6 reads the boot program data from the ROM 16, and reads the main body change flag of the main body operation program data stored in the main body 15A of the flash memory 15 based on the boot program data. . In step SP13, the CPU
6 checks whether the read main body change flag is set, that is, whether it is necessary to rewrite the main body operation program data. As a result, when the CPU 6 determines that the main body operation program data does not need to be rewritten, it proceeds to step SP14, and when it determines that it needs to be rewritten, it proceeds to step SP15.

In step SP14, the CPU 6
The main body operation program data is read from the main body part 15A of the flash memory 15 and activated, and the program is started at step SP1.
Then, the program proceeds to 6 to execute the main body operation program data. Then, in step SP17, the CPU 6
During execution of the main body operation program data, it is determined whether a download request is received from a broadcasting station that provides the program and new body operation program data is transmitted, thereby determining whether or not the download is possible. I do. As a result, when the CPU 6 determines that the download is possible, the process proceeds to step SP18, and when the CPU 6 determines that the download is not possible, the process returns to step SP16 to continue the execution of the main body operation program data.

In step SP18, the CPU 6
By setting the main body change flag of the main body operation program data, it indicates that the main body operation program data needs to be rewritten, and the process returns to step SP12 to repeat the operation.

In step SP13, the CP
If U6 determines that the main body operation program data needs to be rewritten, the process proceeds to step SP15,
The download program data is read from the loader unit 15B of the flash memory 15, and the download program data is activated.

At step SP20, the CPU 6
By executing the download program data, the main unit operation program data stored in the main unit 15A of the flash memory 15 is rewritten with new main unit operation program data sent from the broadcasting station. In step SP21, the CPU 6 shifts to step SP22 when the reception level of the antenna 2 is deteriorated during execution of the download, and if the reception level is not deteriorated, executes the download as it is and shifts to step SP23.

In step SP22, the CPU 6
A GUI screen W16 as an antenna level adjustment screen is displayed on the monitor 4 to urge the viewer to adjust the direction of the antenna 2. In step SP24, when the viewer adjusts the direction of the antenna 2 by the viewer, the CPU 6 determines whether or not the reception level of the antenna 2 has recovered, and as a result, determines that the reception level of the antenna 2 has recovered. Returns to step SP20 and resumes downloading.
If it is determined that the reception level has not yet recovered, the process returns to step SP22, and adjustment is performed until the reception level recovers.

On the other hand, in step SP23, the CPU
6 determines whether or not the rewriting of the main body operation program data has been completed. As a result, if it is determined that the rewriting of the main body operation program data has been completed, step SP
Then, the process returns to step SP20 to continue the download. In step SP25, the CPU 6 drops the main body change flag of the main body operation program data to indicate that rewriting of the main body operation program data is not required, and then returns to step SP12 to return to the rewritten new main body operation program data. The receiver 3 is started based on the program data.

In the above configuration, the CPU 6 constantly monitors the reception state of the antenna 2 during the execution of the download. If the reception state is deteriorated by a change in the direction of the antenna 2 in this state, the operation of the viewer is performed. , A GUI screen W16 as an antenna level adjustment screen is displayed on the monitor 4. Therefore, the viewer can adjust the direction of the antenna 2 while watching the reception level displayed on the GUI screen W16, thereby recovering the reception level of the antenna 2 and restarting the download.
As in the conventional case, the function of the receiver 3 is impaired due to the failure of the download, and it is possible to avoid the necessity of repair at the time of restoration.

Since the GUI screen W16 is created using only the minimum necessary information, it is possible to avoid an increase in the program size of the download program data and to avoid an increase in the memory capacity of the flash memory 15. You.

According to the above configuration, when the receiving state deteriorates due to a change in the direction of the antenna 2 during the execution of the download, the GUI screen W serving as an antenna level adjustment screen is displayed.
By displaying 16 on the monitor 4, the viewer can adjust the direction of the antenna 2 while viewing the reception level of the antenna 2 displayed on the GUI screen W16 to recover the reception state of the antenna 2. Thus, the restoration work can be performed only by a simple operation by the viewer.

In the above-described embodiment, the case has been described where the GUI screen W16 is displayed on the monitor 4 and the receiving state is restored when the receiving state deteriorates during the execution of the download. However, the present invention is not limited to this, and when the reception state deteriorates during reception of program data, an antenna level adjustment screen may be displayed on the monitor 4 to recover the reception state.

In the above-described embodiment, a case has been described where the reception level is calculated by comparing the reception data S2 before error correction and the reception data S3 after error correction with data to which an error correction code is added. However, the present invention is not limited to this, and the electric field strength when radio waves are received may be used as the reception level.

Furthermore, in the above-described embodiment, a case has been described where the reception level is displayed as a bar on the GUI screen W16. However, the present invention is not limited to this.
The reception level may be displayed on the display 16 using numerical values.

[0047]

As described above, according to the present invention, the reception state of the broadcast wave is detected and displayed on the display means. It is possible to easily recover the reception state by adjusting the direction of the antenna while visually checking the reception state displayed on the display means, and thus it is possible to further reduce the time and effort required for restoring data reception as compared with the related art. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a receiver according to the present invention.

FIG. 2 is a schematic diagram illustrating a configuration of a flash memory.

FIG. 3 is a schematic diagram illustrating a download processing procedure.

FIG. 4 is a schematic diagram illustrating a download processing procedure.

FIG. 5 is a flowchart showing a download processing procedure by a CPU.

[Explanation of symbols]

1 ... receiving system, 2 ... antenna, 3 ... receiver,
4 monitor 5 tuner 6 CPU 7
Demodulation circuit, 8 error correction circuit, 15 flash memory, 16 ROM, 17 operation unit, 20 error correction addition circuit, 21 comparison circuit.

Claims (6)

[Claims] 1. A data receiving apparatus for receiving a broadcast wave and outputting data of a desired channel to the outside, comprising: an antenna for receiving the broadcast wave; and a receiving state of the broadcast wave received by the antenna based on the data. A data receiving device comprising: a detecting unit for detecting the broadcast wave; and a control unit for displaying the reception state of the broadcast wave on an external display unit. 2. An extracting means for extracting receiving program data from the data, wherein the control means writes the receiving program data into a storage means and displays a receiving state of the receiving program data on the display means. The data receiving device according to claim 1, wherein: 3. The data receiving apparatus according to claim 1, wherein the control means displays, on the display means, instruction information for adjusting the direction of the antenna together with the reception state of the broadcast wave. . 4. A display control method for a data receiving apparatus for receiving a broadcast wave and outputting data of a desired channel to the outside, wherein the broadcast wave is received by an antenna, and a reception state of the broadcast wave is determined based on the data. Detect
A display control method for a data receiving apparatus, wherein the reception state of the broadcast wave is displayed on an external display means. 5. The method according to claim 4, wherein receiving program data is extracted from said data, said receiving program data is written into a storage means, and a receiving state of said receiving program data is displayed on said display means. Display control method for a data receiving device. 6. A display control method for a data receiving apparatus according to claim 4, wherein said display means displays instruction information for adjusting the direction of said antenna together with a reception state of said broadcast wave.