JPH1023344A - Broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically set and display channel information. SOLUTION: The tuning operation for selecting a broadcast channel is operated, whether or not extended data are superimposed on the selected channel is judged, and if so, the extended data are decoded, and channel information is extracted (S001-S003). Then, when the same information as the extracted channel information is not stored in a memory, it is stored in the memory (S004-S005). Also, when it is judged that the channel information is already stored in the memory, the received channel information is compared with the channel information stored in the memory, and only when the received channel information is updated, the received channel information is stored in the memory (S006-S005).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving apparatus capable of receiving service information such as channel information (channel number, broadcast station name, etc.).

[0002]

2. Description of the Related Art Recently, with the spread of satellite broadcasts, cable televisions, and the like, television broadcasts have been multichanneled. Broadcast channels include general-purpose channels for broadcasting various programs and specialized channels for news programs, movies, sports, and the like. The user can operate a channel selection key (numeric keypad, up / down key, etc.) provided on a remote commander or the like, for example, to select a desired channel from a large number of broadcast channels. .

[0003]

By the way, the diversification of broadcast channels has made it possible for the user to select various broadcast programs. However, the currently selected broadcast channel can be determined during channel selection. May disappear. Therefore, it is known to display channel information (channel caption) such as a channel number and a broadcast station name at the same time as selecting a channel. However, in this case, the user previously stores a broadcast station name or the like corresponding to the channel number in a memory or the like of the television receiver as channel information, and reads out and displays the channel information of the selected broadcast channel. is there. Therefore, when the user wants to display the channel information on the screen, the user must input and register the channel information for the broadcast channel. Also, after registering the channel information, for example, in the case of a power outage or moving, A
If the supply of the C power is temporarily stopped, the registered channel information is erased from the memory and needs to be stored again. Further, the channel number of a program supplied by a cable television company or the like may be changed, and also in this case, there is a problem that the changed channel number must be registered again.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a receiving means for receiving a broadcast, and a decoding means for extracting channel information from a received signal received by the receiving means. Means, memory means for storing the channel information, control means for reading out the channel information from the memory means by a required input operation, and control for generating channel caption information, and displaying the channel caption information on display means The broadcast receiving apparatus is provided with video signal processing means for superimposing and outputting the received signal.

According to the present invention, for example, channel information such as a channel number and a broadcast station name can be extracted from service data transmitted together with a broadcast program and displayed as a channel caption, so that a user sets channel information. You can save time and effort.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the television receiver according to the present invention will be described. FIG. 1 is a diagram showing some circuit blocks of the television receiver of the present embodiment. The tuner 1 includes, for example, a terrestrial broadcast tuner, a satellite broadcast tuner, and the like, and is configured to select a broadcast wave received by the antenna A. The reception signal selected and output here is supplied to the video processor 2 via the switch SW. The switch SW is connected to a reception signal output from the tuner 1 and an external input terminal t from an external device (not shown) such as a VCR or a laser disk player.
And supplies the video signal to the video processor 2.

The video processor 2 performs various kinds of signal processing such as separation of color signals, formation of color difference signals, and extraction of synchronization signals, and supplies video signals of RGB colors to the CRT 3. Further, the synchronization signal extracted here is supplied to a control unit 5 described later, and a clock synchronized with the horizontal scanning cycle is generated. Further, it is configured so that character information (menu screen, channel caption, etc.) generated by the OSD circuit 8 described later is superimposed on the video signal selected by the switch SW and output. An XDS (Extended Data Services) decoder 4 is configured to extract and decode extended data superimposed on a predetermined vertical blanking period of the reception signal selected by the tuner 1. The extended data extracted here is transmitted from the broadcast station as information (broadcast time, program name, broadcast station name, etc.) relating to the program currently being broadcast on the selected broadcast channel. By extracting the information, the information can be displayed on the screen.

The control unit 5 generates a clock based on a synchronization signal supplied from the video processor 2 and controls various functional blocks constituting the television receiver in synchronization. In addition, a command modulated by, for example, infrared rays output from a remote commander RC provided with various operation keys is input via the light receiving unit 6 and the tuner 1 is input.
Tune control, volume adjustment, various image quality adjustments, and switching control of the switch SW.

As shown in FIG. 2, the remote commander RC includes, for example, a numeric keypad 10 for directly selecting a broadcast channel and a display key 1 for displaying a screen.
1. A favorite key 12 for displaying a favorite menu for selecting a channel by frequently selecting a channel or a user's favorite channel, an XDS key 13 for displaying extended data, a volume control, etc. Up / down key 14, for example, a menu key 15 for displaying an adjustment / setting menu screen for performing various adjustments such as image quality and various settings of the television receiver main body, an exit key 16 for ending the menu screen, a television receiver Power key 17 for turning on the power to the machine
And the like are provided. For example, when a favorite menu or an adjustment / setting menu screen is displayed, the volume volume adjustment key 13 is used as a selection key for selecting an item. When various operation keys are operated, a command corresponding to the operation keys is transmitted to the transmission unit 18.
Is output as infrared light, and is input to the control unit 5 via the receiving unit 6 of the television receiver body, and various controls are performed.

Returning to FIG. Memory (RAM
A random access memory 7 is configured to store, for example, channel information such as a channel number and a broadcast station name from among the extended data extracted by the XDS decoder 4.
Then, for example, when the display key 11 is operated by the remote commander RC, for example, the channel information of the selected channel is read out, superimposed on the video signal as a channel caption, and displayed on the screen. Become so. As will be described later with reference to FIG. 7, when a channel number or the like is updated, the updated information is stored.

[0011] Further, information related to broadcast programs other than channel information is also temporarily recorded in the RAM 7, and can be read out and displayed on the screen by the user operating the XDS key 13 of the remote commander RC. In addition,
In order to collectively obtain the channel information of the receivable broadcast channels, a storage mode for scanning all the broadcast channels under the control of the control unit 5 and storing the channel information may be provided. As in the conventional case, the channel information can be set by the user independently of the extended data.

The OSD circuit 8 generates, for example, a menu screen or the like displayed on the display unit of the CRT 3 as character information when selecting various adjustment / setting items, and supplies it to the video processor 2. In the present invention, for example, based on the channel data read from the RAM 7 when channel selection is performed, character information as channel caption data is generated and supplied to the video processor 2.

The television receiver of the present embodiment is configured, for example, as shown in the block diagram of FIG. 1 so that channel information can be extracted from extended data extracted from a broadcast wave selected by the tuner 1. Extract and R
Recording is possible on AM7. Therefore, the user can store channel information by performing channel selection by a normal operation.

An example in which channel information transmitted from a broadcast station by extended data is displayed as a channel caption will be described below with reference to FIGS. 3 to 6 show the display unit 3a of the CRT 3.
FIG. 4 is a diagram schematically showing the state of FIG.

FIGS. 3A and 3B show an example in which the display key 11 of the remote commander RC is operated to display the channel number of the currently selected broadcast channel and the name of the broadcast station. (A) is an image only, FIG.
(B) shows an image and a channel caption. For example, as shown in FIG. 3A, when the user operates the display key 11 while watching a broadcast program by selecting a certain broadcast channel, the display shown in FIG. As described above, the channel number “12” and the broadcast station name “CBS” are displayed by the OSD circuit 8 at the upper right of the screen, for example.
Display the channel caption. The user can know the currently selected channel number and broadcast station name from the channel caption display.

As shown in FIGS. 4A and 4B, each time a channel is selected, a channel number and a broadcast station name corresponding to the channel may be displayed. For example, FIG. 4A shows a case where, for example, a channel number “12” and a broadcast station name “CBS” are selected as in FIG. Is switched,
As shown in FIG. 4B, the channel caption “23” and the broadcast station name “PBS” after the switching are displayed.

Also, as shown in FIG.
When the television receiver is turned on by operating the power key 17 with the power of the television receiver turned off and no image displayed on the display unit 3a, the image is displayed on the display unit 3a. At the same time, as shown in FIG. 5B, the channel caption of the last selected channel number “12” and the broadcast station name “CBS” is displayed. As a result, the channel number and broadcast station name selected at the time of power-on can be ascertained.

Meanwhile, while the number of broadcast channels increases, the broadcast channels actually viewed by each user are limited by hobbies and the like. In such a case, it is conceivable to select a number of broadcast channels desired by each user to configure a favorite menu, select a channel number or the like displayed in the favorite menu, and perform channel selection. I have. Therefore, in the present invention, when the favorite key 12 is operated, for example, as shown in FIG. 6, the channel caption (“12”) is displayed.
At the same time as “CBS”), a favorite menu M in which a list of channel numbers and broadcast station names is displayed is displayed. Then, the user operates the up / down key 13 to move the cursor C in the direction of the arrow to select a broadcast channel. As a result, when the user wants to select a predetermined broadcast channel, the user can select a channel number and a broadcast station name.

As described above, the channel caption display described with reference to FIGS. 3 to 6 obtains information constantly updated by the extended data superimposed on the selected reception signal even when the broadcast channel is changed. This eliminates the need for the user to reset the settings each time. Also, even if the supply of AC power is temporarily cut off, for example, in the case of a power outage or moving, channel information can be obtained and stored by receiving extended data again. That is, in the present invention, it is possible to store the channel information without the user performing a complicated setting operation.

The process of extracting the channel information from the received extended data and storing it in the memory 7 will be described below with reference to the flowchart of FIG. The flowchart described here shows an example in which channel information is stored for a selected broadcast channel. First, a tuning operation for selecting a broadcast channel is performed while the power is on (S001). Then, it is determined whether or not the extended data is superimposed on the broadcast channel selected by the channel selection operation (S002). Extract. If the same information as the channel information extracted here is not stored in the memory 7, the flow advances to step S005 to proceed to step S005.
To memorize. If it is determined in step S004 that the received channel information has already been stored, the process advances to step S006 to compare the received channel information with the channel information stored in the memory 7 and update the received channel information. Only in this case, the received channel information is stored in the memory 7.

When the television receiver is used for the first time, a predetermined command is input from, for example, the remote commander RC, and all the receivable broadcast channels are scanned under the control of the control unit 5, and step S001 is performed. Alternatively, the processing steps from step S005 to step S005 may be repeatedly performed. When the extended data is not superimposed on the selected broadcast channel (S002), the storage process of the channel information is not performed. In this case, even if the broadcast channel is selected, the broadcast station name and the like are not displayed, so that the user can set it as necessary.

In the above-described embodiment, an example has been described in which the present invention is applied to a television receiver. However, the present invention may be applied to, for example, a television tuner connected to a television receiver as an external input device.

[0023]

As described above, the broadcast receiving apparatus of the present invention can extract and store the channel information from the broadcast wave transmitted from the broadcast station, so that the channel caption (channel number, broadcast This eliminates the need for the user to perform complicated setting operations to display the (station name, etc.). Further, since the channel information provided by the broadcasting station can be stored, even if the channel information is updated, it can be dealt with on the spot.
Further, for example, due to a power outage or moving,
Even if the voltage is cut off and the stored channel information is erased in the memory, the channel information can be stored in the memory by receiving the channel information again.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment in which a broadcast receiving device of the present invention is applied to a television receiver.

FIG. 2 is an exemplary view for explaining operation keys constituting a remote commander for operating the television receiver of the embodiment.

FIG. 3 is a diagram illustrating a display example of a channel caption.

FIG. 4 is a diagram illustrating another display example of a channel caption.

FIG. 5 is a diagram illustrating still another display example of a channel caption.

FIG. 6 is a diagram illustrating still another display example of a channel caption.

FIG. 7 is a flowchart illustrating a process for storing channel information.

[Explanation of symbols]

1 tuner, 2 video processor, 4 XDS decoder, 5 control unit, 7 memory, 8 OSD circuit, 11
Display key, 12 Favorite key, 13
XDS key, RC remote commander

Claims (2)

[Claims] A receiving unit for receiving a broadcast; a decoding unit for extracting channel information from a received signal received by the receiving unit; a memory unit for storing the channel information; Control means for reading the channel information to control generation of channel caption information; and video signal processing means for superimposing and outputting the received signal so as to display the channel caption information on a display means. A broadcast receiving apparatus, comprising: 2. The system according to claim 1, wherein the channel caption information includes a channel number and a broadcast station name.
A broadcast receiving apparatus according to claim 1.