JP2003133980A - Broadcast receiver and method of displaying received data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcast receiver displaying data only if the data has been actually updated when receiving broadcast including data therein and displaying the received data. SOLUTION: When data as shown in (a) was received at a broadcast receiver RPA and stored in the broadcast receiver RPA before, the data is displayed in a display part 11 as shown in (c). When data is then newly received and the content is changed from (a) to (b), for example, from 'Tohoku Expressway: 10 km traffic jam from Utsunomiya IC; Joban Expressway: 3 km traffic jam from Sakuratsuchiura IC' to 'Tohoku Expressway: 10 km traffic jam from Utsunomiya IC; Joban Expressway: 20 km traffic jam from Sakuratsuchiura IC' as illustrated, the new data and the data stored in the broadcast receiver RPA are compared, and only the different portion is updated, that is, from 'Jobon Expressway: 3 km traffic jam from Sakuratsuchiura IC' to 'Joban Expressway: 20 km traffic jam from Sakuratsuchiura IC'. And then, the data is displayed on the display part 11 of the broadcast receiver RPA as shown in (d).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a broadcast receiver,
In particular, the present invention relates to a broadcast receiver capable of receiving a broadcast including data and displaying the received data.

[0002]

2. Description of the Related Art In recent years, the progress of digitization technology for broadcasting has made it possible to carry out broadcasting on a wide variety of channels. Due to such technological progress, the conventional broadcast format itself has changed significantly, and with this, the user can select a desired channel from various types of channels. In addition, in digital broadcasting, information such as a program name and song name being broadcast, traffic information, and weather forecast is added as additional information. By displaying such information, information about the program currently being broadcast and traffic information are added. It is possible to notify the weather forecast.

[0003]

However, when the above information is displayed each time it is received, the same information is displayed endlessly because the information is not always updated. Was uncomfortable. or,
Although there is an update flag that indicates that the data has been updated in the data being broadcast, originally, the update flag is a flag that indicates that the data being broadcast has changed, but Even in the same case, the update flag may be set only by the data transmission time on the broadcasting station side, and it is impossible to determine whether the data is actually the same or not by the update flag alone.

From the above, it is an object of the present invention to provide a broadcast receiver which receives a broadcast containing data and displays the received data only when the data is actually updated. That is.

[0005]

According to the present invention, the above object is to receive a broadcast including a predetermined channel, store the received data, compare the stored data with the currently received data, and compare the data. As a result, when the stored data is different from the currently received data, the stored data is updated, and when the data is updated, the updated data is displayed.

Further, according to the present invention, the above object can be achieved by displaying only the updated data section when the data is composed of a plurality of sections when the data is updated.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION (A) Schematic Description of the Present Invention FIG. 1 is a schematic explanatory diagram of the present invention, in which (a) is the content of data previously received and stored by a broadcast receiver, and (b) is This is the content of the data currently being received. And (c),
(D) is an example of data display of the broadcast receiver, RA is the main body of the broadcast receiver, 10 is an operation unit for selecting a channel and adjusting the volume, and 11 is information of the currently listened channel and received data. It is a display unit that displays, etc.

When the broadcast receiver RPA previously received the data as shown in (a) and stored the data in the broadcast receiver RPA, it is displayed on the display unit 11 as shown in (c). When the content of the newly received data is changed to the content shown in (b), for example, “Tohoku Expressway: Utsunomiya IC
10km of traffic jam heading to Joban Road: 3km of traffic jam heading Sakurachiura IC to "Tohoku Expressway: Utsunomiya IC heading 10
If there is a 20km traffic jam starting from Tsuchiura IC, the data stored in the broadcast receiver RPA will be compared with the newly received data. As a result, different locations will be displayed, "Joban: Sakura "3 km of traffic congestion at Tsuchiura IC at the beginning" was updated to "Joban: Sakura Tsuchiura IC at 20 km of congestion at the beginning" and displayed on the display 11 of the broadcast receiver RPA as shown in (d). To do.

(B) First Embodiment of the Present Invention (a) Configuration of the Broadcast Receiver of the Present Invention FIG. 2 is a configuration diagram of the broadcast receiver of the present invention. In the figure, reference numeral 1 is an antenna for receiving broadcasting, for example, digital broadcasting, 2 is a tuner section for receiving via the antenna 1, extracting desired reception channel information, and outputting the extracted signal, 3 is a tuner section 2. It is a signal demodulation unit that converts the output signal into digital data and then performs a predetermined demodulation process to demodulate the interleaved reception data.

Reference numeral 4 deinterleaves the transmission data output from the signal demodulation unit 3 to restore the original data sequence, and then performs predetermined error correction processing to obtain channel data including channel information corresponding to a plurality of channels. Restored and selected by the user based on an instruction from the control unit 9 described later 1
It is a channel selection unit that extracts and outputs channel information corresponding to one channel.

Reference numeral 5 denotes an audio decoding unit which performs predetermined expansion processing on the channel information output from the channel selection unit 4 and outputs PCM audio data. Reference numeral 6 denotes analog PCM audio data output from the audio decoding unit 5. Digital that converts to a signal and outputs
It is an analog converter (D / A converter).

Reference numeral 7 is an amplifier for amplifying the analog signal output from the digital-analog converter 6 with a predetermined amplification factor,
Reference numeral 8 is a speaker for outputting a sound corresponding to the analog signal amplified by the amplifier 7, 9 is a control unit for controlling the entire digital broadcast receiver, and 10 is an operation for searching for a channel desired by the user and operation such as volume adjustment. An operation unit 11 is provided with various keys for performing the operations, and a display unit 11 displays information about the currently listened channel and received data such as traffic information.

Reference numeral 9a denotes a system controller, which performs processing such as channel selection from the operation unit 11 and writing to and reading from a memory described later. Reference numeral 9b denotes a channel search unit for performing a channel search via the system controller 9a when there is an instruction to search for a desired channel from the operation unit 11, 9c a buffer for temporarily storing the received data, and 9d for a temporary storage in the buffer 9c. The memory 9e stores the data stored therein, 9e is a data comparison unit for comparing the contents of the data temporarily stored in the buffer 9c and the data stored in the memory 9d, and 9f is the information of the currently listened channel, the data stored in the memory 9d, Is a display control unit that performs control for displaying on the display unit 11.

(B) Data structure of digital broadcast FIG. 3 is a diagram showing an example of the data structure of the digital broadcast in the first embodiment of the present invention, in the case where traffic information is added. As shown in the figure, a plurality of channels are multiplexed in one digital broadcast signal and transmitted in a predetermined frame unit. One channel is composed of music data and program additional information for a music program, and the program additional information includes traffic information indicating information such as a program name, song name, artist name, traffic jam and regulation, for example, "Tohoku Expressway: Utsunomiya". I
As shown in the figure, the data "C is 10 km of traffic jam" is included in the code "938 c96 ...".

(C) Data structure of traffic information FIG. 4 is a data structure of traffic information. The data transmitted from the broadcasting station is displayed as (a) and (b) on the receiver, but the actual data has character codes such as (c) and (d). It is transmitted in frames. And, in the figures of (a) and (b), the display is carried out over two lines, but this is because the line feed code (0
This is because a 0d) exists and the character code after that is displayed as the second line. That is, it is possible to treat the data before the line feed code as the data displayed on the first line and the data after the line feed code as the data displayed on the second line.

In FIG. 4C, the code 33 is (d).
Then the code has been changed to 3230. And
Since the position of this code is after the line feed code, it can be determined that the data displayed on the second line has been changed.

(D) Flowchart of the first embodiment of the present invention FIG. 5 is a flowchart of the first embodiment of the present invention, which is an example in which the data as shown in FIG. 4C is already stored in the memory 9d. is there. First, the system controller 9a extracts data from the received broadcast (step 101).
For example, the traffic information data (FIG. 4D) in the additional information is extracted from the digital broadcast, and the extracted reception data is stored in the buffer 9c (step 102). Then, the data comparison unit 9e compares the data stored in the buffer 9c with the memory 9c.
It is determined whether the data stored in d (FIG. 4C) are the same data (step 103).

At this time, the line feed code (0a 0
d) The data up to the previous line is treated as the data of the first line and the line after the line feed code is treated as the data of the second line.
It is judged whether the data is different from the data stored in. In step 103, the data comparison unit 9e causes the buffer 9c (see FIG.
Data stored in (d)) and memory 9d (FIG. 4 (c))
When it is determined that the data stored in the buffer 9c is different, for example, a part of the data stored in the memory 9d is "33" and a part of the data stored in the buffer 9c is "3".
If it is "230", it means that there is a difference in the data, that is, the difference in the data after the line feed code here, so only the line feed code and subsequent lines are updated and stored in the memory 9d (step 104).

Next, the system controller 9a sends the contents stored in the memory 9d to the display control unit 9f, and the sent data is sent to the display unit 11 by the display control unit 9f.
All are displayed as in (b) (step 105). Next, the system controller 9a determines whether or not a predetermined time, for example, 30 seconds has elapsed since the display on the display unit 11 (step 106). If the time has not elapsed, the display continues, and if 30 seconds has elapsed, the display is continued. The display on the section 11 is finished (step 107). The data stored in the buffer 9c by the data comparison unit 9e in step 103 and the memory 9d
If it is determined that the data stored in the same is the same, no data is displayed (step 108).

(C) Second Embodiment of the Present Invention (a) Configuration of Broadcast Receiver of the Present Invention The configuration of the broadcast receiver of the present invention is the same as that of the first embodiment (FIG. 2), and the data of digital broadcast is The structure and the data structure of the traffic information are the same as in the first embodiment (FIGS. 3 and 4).

(D) Flowchart of the second embodiment of the present invention FIG. 6 is a flowchart of the second embodiment of the present invention, which is an example in which the data as shown in FIG. 4C is already stored in the memory 9d. is there. Further, the same numbers are attached to the same processes as those of the first embodiment (FIG. 5) of the present invention.

In step 104, since there is a difference in the data after the line feed code, only the line feed code and subsequent lines are updated and stored in the memory contents of the memory 9d. Next, the system controller 9a reads the updated data, that is, the data after the line feed code from the memory 9d and transmits it to the display control unit 9f, and the data after the transmitted line feed code is displayed by the display control unit 9a.
f is displayed on the display unit 11 as shown in FIG. 1D (step 201).

[0023]

As described above, according to the present invention, when the data stored in the broadcast receiver is different from the currently received data, the stored data is updated, and when the data is updated, the updated data is displayed. Therefore, it is possible to provide a broadcast receiver that displays data only when the data is actually updated.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of the present invention.

FIG. 2 is a configuration diagram of a broadcast receiver of the present invention.

FIG. 3 is a diagram showing an example of a data configuration of digital broadcasting in the first embodiment of the present invention.

FIG. 4 is a data configuration diagram of traffic information.

FIG. 5 is a flowchart of the first embodiment of the present invention.

FIG. 6 is a flowchart of a second embodiment of the present invention.

[Explanation of symbols]

RA ... Broadcast receiver body 10 ... Operating section 11 ... Display section

Claims (4)

[Claims] 1. A receiving means for receiving a broadcast including data, a storing means for storing the data received by the receiving means, and a data comparing means for comparing the data stored in the storing means with the currently received data. And a data updating means for updating the stored data when the stored data is different from the currently received data by the comparison, and the updated data is displayed when the data is updated by the data updating means. A broadcast receiver, characterized by comprising: 2. The broadcast receiver according to claim 1, wherein the display means displays only a section including updated data when the data is divided into a plurality of sections. 3. A received data display method for receiving a broadcast including data and displaying the received data, wherein a broadcast including a predetermined channel is received, the received data is stored, and the stored data and the currently received data are received. The stored data is compared, and when the stored data is different from the currently received data as a result of comparison, the stored data is updated, and when the data is updated, the updated data is displayed. Received data display method. 4. The received data display method according to claim 3, wherein when the data is updated, if the data is composed of a plurality of sections, only the updated data section is displayed.