JP3848931B2 - Terrestrial digital broadcast receiver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terrestrial digital broadcast receiver, and more particularly, to a terrestrial digital broadcast receiver that receives broadcast signals from a plurality of broadcast stations in and outside a region to which the same channel number is assigned.
[0002]
[Prior art]
In digital terrestrial broadcasting, a three-digit channel number may be assigned to each broadcasting station in each prefecture in each prefecture, and a duplicate channel number may be assigned to a broadcasting station in neighboring prefectures outside the area. Therefore, when cross-border reception is possible, broadcasts may be received from a plurality of broadcast stations having the same channel number within and outside the area. In order to distinguish these, a plurality of broadcasting stations having the same channel number are distinguished by a branch number, that is, by a pseudo four-digit number in which a branch number is added to a three-digit channel number. In this case, a list of selectable broadcast stations can be displayed on the screen by OSD, and a method of selecting can be considered. However, it is very troublesome for the viewer to select with a cross button, a determination button, or the like.
[0003]
In Patent Document 1, when there is an overlapping channel number in BS broadcasting and CS broadcasting, a channel selection that facilitates selection of a broadcasting station by OSD display of a broadcasting source (BS or CS) and channel number as a set An apparatus is described.
[0004]
In Patent Document 2, when there are a plurality of analog broadcast and digital broadcast programs transmitted using the same channel number, a channel selection device that makes OSD display of a selectable program together with the channel number and facilitates program selection. Are listed.
[0005]
[Patent Document 1]
JP 2002-94889 A (page 7, FIG. 13)
[0006]
[Patent Document 2]
Japanese Patent Laid-Open No. 2002-33970 (page 3, FIG. 3)
[0007]
[Problems to be solved by the invention]
Patent Document 1 describes the selection of a broadcasting station when there are overlapping channel numbers in BS broadcasting and CS broadcasting. However, in the case of cross-border reception of terrestrial digital broadcasting, channel numbers (3 There is no description of channel selection when there are overlapping digits.
[0008]
The digital broadcast receiver described in Patent Document 2 also describes the selection of a plurality of programs for analog broadcasting and digital broadcasting, but channel numbers (3 for different regions in the case of cross-border reception of terrestrial digital broadcasting). There is no description of channel selection when there are overlapping digits.
[0009]
An object of the present invention is to facilitate selection of a broadcast station when a terrestrial digital broadcast receiver can receive broadcast signals from broadcast stations in and outside a region where channel numbers overlap.
[0010]
[Means for Solving the Problems]
A terrestrial digital broadcast receiver according to a first aspect of the present invention is the terrestrial digital broadcast receiver that receives broadcast signals from broadcast stations in and outside the area to which the same channel number is assigned. That is, when a channel number that can be received from a plurality of broadcasting stations is selected, a broadcasting station in the area is selected. Each broadcast station is assigned to the adjacent numeric buttons of the remote controller as a value obtained by adding 1 to the branch number of each broadcast station, and assigned to the broadcast station names and broadcast stations in and outside the area. The number of the number button is displayed in OSD.
[0011]
According to this terrestrial digital broadcast receiver, each broadcasting station having the same channel within and outside the area is assigned to the adjacent numeric buttons of the remote controller as a value obtained by adding 1 to the branch number of each broadcasting station , and within and outside the area. The broadcast station name of each broadcast station and the numbers of the numeric buttons assigned to each broadcast station are displayed in OSD. Therefore, the user can easily select a broadcast station even in the case of cross-border reception by confirming a number corresponding to the broadcast station name from the OSD display and inputting this number from the adjacent numeric buttons on the remote controller.
[0012]
In addition, when a channel number capable of cross-border reception is selected, first, by selecting a broadcasting station in a region that is likely to be selected by many users, the process of selecting the broadcasting station after selecting the channel number is omitted. It is possible to select a broadcasting station more efficiently.
[0013]
A terrestrial digital broadcast receiver according to a second aspect of the present invention is a terrestrial digital broadcast receiver that receives broadcast signals from broadcast stations in and outside the region to which the same channel number is assigned, and has the following characteristics. That is, each broadcasting station is assigned to the adjacent numeric buttons of the remote controller. In addition, the broadcast station names of the broadcast stations in and outside the area and the numbers of the numeric buttons assigned to each broadcast station are displayed in OSD. Then, one of the broadcasting stations is selected by inputting a number from an adjacent number button.
[0014]
According to this terrestrial digital broadcast receiver, each broadcasting station in the area and outside the area having the same channel is assigned to the adjacent numeric buttons of the remote controller, and the names of the broadcasting stations in and outside the area and the broadcasting stations are assigned to each broadcasting station. OSD display of the number of the assigned number button. Therefore, the user can easily select a broadcast station even in the case of cross-border reception by confirming a number corresponding to the broadcast station name from the OSD display and inputting this number from the adjacent numeric buttons on the remote controller.
[0015]
In the terrestrial digital broadcast receiver according to the third invention, in the terrestrial digital receiver according to the second invention, when a channel number that can be received from a plurality of broadcast stations is selected, a broadcast station in the region is selected. The
[0016]
In this terrestrial digital broadcasting receiver, when a channel number that can be received across borders is selected, the selection of the broadcasting station is made efficient by first selecting a broadcasting station in a region that is likely to be selected by many users. Can be done automatically.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
(1) Configuration FIG. 1 is a functional block diagram of a terrestrial digital broadcast receiver 1 according to an embodiment of the present invention. The receiver 1 includes a tuner 2, a digital decoder 3, an OSD circuit 4, a memory 5, a control unit 6, an operation unit 7, and an infrared receiving unit 8. The tuner 2 receives a terrestrial digital broadcast signal in a frequency band corresponding to a desired channel. Specifically, the tuner 2 receives a broadcast signal received by the antenna 9 and selects a three-digit channel number and a branch number according to a command input to the control unit 6 by the user. A broadcast signal in a frequency band corresponding to the selected channel is received, modulated to an intermediate frequency (IF), and output to the digital decoder 3. The digital decoder 3 decodes the broadcast signal received by the tuner 2. The OSD circuit 4 outputs a broadcast signal to the display device 11 according to a command from the control unit 6 and outputs an OSD display signal for displaying a branch number of a receivable broadcast station and the name of the currently receiving broadcast station. The memory 5 stores the transmission frequency and channel configuration information of each channel of the broadcast signal. The memory 5 stores information related to OSD display. The control unit 6 includes a CPU and controls each unit. Specifically, the control unit 6 stores information on the frequency band of each channel and the received channel information in the memory 5 in accordance with instructions received by the operation unit 7 and the infrared receiving unit 8, and stores these information in the channel. Refer to it when necessary when selecting a channel. In addition, the control unit 6 analyzes the channel information and acquires information regarding the 3-digit channel number and the 1-digit branch number. As the display device 11, a display screen of a television receiver may be used, or a CRT, LCD, or PDP may be used. The operation unit 7 receives user input from a group of buttons provided on the main body of the receiver 1 and outputs the input from the user to the control unit 6. The infrared receiving unit 8 receives infrared rays from the remote controller 10 and outputs an electrical signal based on the infrared rays to the control unit 6.
[0018]
FIG. 2 is a schematic diagram of the remote controller 10. The remote control 10 has a numeric button 101, a cross button 102, and an up / down button 103. The number button 101 includes buttons from “0” to “9”, buttons assigned 10 and 0, buttons assigned 11 and *, and buttons assigned 12 and #. For example, it is used to directly input a channel number. The cross button 102 includes an up / down button 102a, a left / right button 102b, and an enter button. For example, when a plurality of options are displayed on the OSD, the up / down button 102a and the left / right button 102b move the cursor, Used to determine. The up / down button 103 is used, for example, to change the channel in order.
(2) Cross-border reception of terrestrial digital broadcasting FIG. 3 is an explanatory diagram for explaining cross-border reception of terrestrial digital broadcasting. Here, a case where the receiver 1 is in Osaka will be described as an example. The 3-digit channel number of terrestrial digital broadcasting can be obtained from Equation (1) according to the ARIB standard.
Service type * 200 + remote control key ID * 10 + (service number + 1)
... (1)
Here, the service type is 0 in the case of television. When the remote control key ID = 1 and the service number = 0, the channel number is “011”. The channel number is calculated for each prefecture, and the channel number of the broadcasting station in the area may be the same as the channel number of the broadcasting station outside the area.
[0019]
In the example of FIG. 3, the same three-digit channel number “011” is assigned to broadcasting station A in Osaka, broadcasting station B in Wakayama, and broadcasting station C in Tokushima. When the receiver 1 in Osaka Prefecture can receive broadcast signals from broadcast stations B and C outside the area in addition to the broadcast station A in the area, the broadcast station A to the broadcast station C add to the channel number 011. And branch numbers 0 to 1. More specifically, branch number 0 is added to broadcast station A in the region, branch number 1 is added to broadcast station B, branch number 2 is added to broadcast station C, and each broadcast station A to C is identified by a pseudo four-digit number. Are distinguished.
[0020]
FIG. 4 is an example of a screen when a broadcasting station is selected in the cross-border reception of terrestrial digital broadcasting. Here, a case where broadcasts can be received from the three broadcasting stations A, B, and C described in FIG. 3 will be described.
[0021]
When the channel number 011 is selected by the number button 101 or the up / down button 103, the broadcast station in the area (branch number 0) is displayed as default, and the logo information 201, the channel number “011”, and the broadcast station selection information 203 are OSD. Is displayed. In this example, the broadcasting station A is a broadcasting station in the area (branch number 0). Logo information 201 is logo information of a broadcasting station currently displayed on the screen. In this example, logo information of the broadcasting station A is displayed. The channel number “011” is the currently selected three-digit number. The broadcast station selection information 203 includes broadcast station names that can be selected by the same channel number “011” and the buttons of the numeric buttons 101 of the remote controller 10 assigned to each broadcast station. In this example, the broadcasting station names are broadcasting station A, broadcasting station B, and broadcasting station C, and each button assigned to the broadcasting station name is a value calculated by branch number +1 of each broadcasting station. In this example, the branch number of the broadcasting station A is “0”, and 0 + 1 = 1 is assigned. Similarly, since the branch number of the broadcasting station B is “1” and the branch number of the broadcasting station C is “2”, the numbers assigned to each broadcasting station are 2 and 3. For example, since the number of the broadcasting station A is 1, when the button “1” of the number button 101 is pressed, the broadcasting station A is selected. In this way, the number obtained by adding 1 to the branch number is assigned because the button “0” is separated from the buttons “1”, “2”, etc. in the number button 101. This is to assign a station to an adjacent button. Note that the broadcast station name displayed on the screen may be highlighted so that it can be distinguished from other broadcast stations, or a flag may be displayed beside the broadcast station name displayed on the screen.
(3) Flowchart FIG. 5 is a flowchart of the branch number change process.
[0022]
Step S11: A channel number (three-digit number) is selected.
[0023]
Step S12: It is determined whether or not there are a plurality of branch numbers in the same channel number selected in step S11. When there are a plurality of branch numbers, the process proceeds to step S13, and when there are no plurality of branch numbers, the process returns.
[0024]
Step S13: As shown in FIG. 4, logo information 201 and channel number 202, which is a three-digit number, are displayed in OSD, and broadcast station selection information 203 is displayed in OSD.
[0025]
Step S14: It is determined whether or not the numeric button 101 of the remote controller 10 has been pressed. If the numeric button 101 is pressed, the process proceeds to step S15, and if the numeric button 101 is not pressed, the process returns.
[0026]
Step S15: Switch to the display of the broadcasting station assigned to the button pressed in step S14. For example, in the example of FIG. 4, when the broadcast station A is displayed, when the button “3” of the number button 101 is pressed, the display is switched to the display of the broadcast station C to which “3” is assigned.
(4) Summary According to this terrestrial digital broadcast receiver, the adjacent numeric buttons 101 of the remote controller 10 are set as the value obtained by adding 1 to the branch number of each broadcast station for each broadcast station within and outside the area having the same channel. The broadcast station names of the broadcast stations in and outside the area and the numbers of the numeric buttons assigned to each broadcast station are OSD-displayed as broadcast station selection information. Therefore, the user can easily select a broadcast station even in the case of border reception by confirming a button corresponding to the broadcast station name from the broadcast station selection information and inputting the button.
[0027]
In addition, when a channel number capable of cross-border reception is selected, a broadcasting station can be selected more efficiently by first selecting a broadcasting station in a region that is likely to be selected by many users. .
[0028]
【The invention's effect】
According to the present invention, a terrestrial digital broadcast receiver can easily select a broadcast station when it can receive from a plurality of broadcast stations having the same channel number within and outside the area.
[Brief description of the drawings]
FIG. 1 is a functional block diagram of a terrestrial digital broadcast receiver 1 according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a remote controller 10;
FIG. 3 is an explanatory diagram for explaining cross-border reception of terrestrial digital broadcasting.
FIG. 4 is a screen example in the case of selecting a broadcasting station in cross-border reception of terrestrial digital broadcasting.
FIG. 5 is a flowchart of a broadcast station selection process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Terrestrial digital broadcast receiver 2 Tuner 3 Digital decoder 4 OSD circuit 5 Memory 6 Control part 7 Operation part 8 Infrared receiving part 9 Antenna 10 Remote control 11 Display apparatus 101 Number button 102 Cross button 103 Up / Down button

Claims (3)

In a terrestrial digital broadcast receiver that receives broadcast signals from broadcast stations within and outside the region to which the same channel number is assigned,
When a channel number that can be received from multiple broadcast stations is selected, select a broadcast station in the area,
Assign each broadcast station to the adjacent numeric buttons of the remote controller as a value obtained by adding 1 to the branch number of each broadcast station, the names of the broadcast stations in and outside the area, and the numeric buttons assigned to each broadcast station. A terrestrial digital broadcast receiver characterized by OSD displaying numbers and selecting one of the broadcast stations by inputting the number from an adjacent number button. In a terrestrial digital broadcast receiver that receives broadcast signals from broadcast stations within and outside the region to which the same channel number is assigned,
Each broadcasting station, assigned to adjacent numeric buttons of the remote controller, the regional and the broadcasting station name of the broadcast station of the outside, and a number to the OSD display numeric button allocated to each broadcasting station, from adjacent numeric buttons A terrestrial digital broadcast receiver, wherein any one of the broadcast stations is selected by inputting the number.   The terrestrial digital broadcast receiver according to claim 2, wherein when a channel number receivable from a plurality of broadcast stations is selected, a broadcast station in the area is selected.

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