JP2005026769A - Receiver for terrestrial digital broadcasting and reception method of terrestrial digital broadcasting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terrestrial digital receiver for automatically setting a channel allocation of a moved place to the receiver itself when the receiver is moved and the channel allocation is changed. <P>SOLUTION: A CPU 23 of a GPS/FM multiplex receiver 2 detects a change in a reception area of the terrestrial digital receiver, figures out the revised reception area on the basis of a received GPS signal or a received signal of a FM multiplex broadcasting, acquires new channel allocation data corresponding to the reception area from a ROM 24, transmits the new channel allocation data after the revision to an E<SP>2</SP>P-ROM (16) at a side of a digital broadcast receiver 1 via an I/O-IF (25), and the receiver 1 updates channel allocation data (preset data) having been stored in the E<SP>2</SP>P-ROM (16) by using the new channel allocation data after the revision. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terrestrial digital broadcast receiving apparatus and a terrestrial digital broadcast receiving method, and in particular, when receiving a terrestrial digital broadcast such as a television or a radio, the channel arrangement is automatically reset according to the reception area. The present invention relates to a terrestrial digital broadcast receiving apparatus and a terrestrial digital broadcast receiving method.
[0002]
[Prior art]
Conventionally, television broadcasting has been centered on analog broadcasting, but in this field as well, the era of digitalization has come, and in recent years, the progress and popularization of digitalization of terrestrial digital broadcasting equipment has made remarkable progress. At present, satellite broadcasting has already been digitized, and terrestrial digitization is planned. If this digitalization of terrestrial waves is realized, it becomes possible to diversify the content provided by the broadcasting side, and the function of the receiver on the receiving side will be further enhanced. In addition, as a ripple effect when terrestrial waves are digitized, it is expected that digital broadcast receivers will become mobile.
[0003]
At present, as described above, digital broadcasting has already been generalized in satellite broadcasting. However, satellite reception parabolic antennas are necessary for receiving satellite broadcasting, and the orientation of the antennas must be fixed. On the other hand, in the case of terrestrial waves, viewing while moving in the form of carrying a small device or in-vehicle is possible, but at this time, there is a problem that the channel arrangement differs depending on the viewing area.
[0004]
The channel arrangement in this case is, for example, a reception broadcast (broadcast station) when the user presses channel 1 with a TV remote control or a reception broadcast (broadcast station) when channel 2 is pressed. , Refers to the arrangement of broadcasting that the user can actually control with the TV remote control. For example, in the current terrestrial broadcasting, the channel arrangement of NHK is generally 1 ch (channel) in the Kanto region and 2 ch in the Kansai region (hereinafter, the channel arrangement is set for each broadcasting station). This means that the channel number for each reception area and its transmission frequency are set in the receiver).
[0005]
At the time of initial installation after purchase of a TV, etc., the user can set a certain channel arrangement by entering the area code. However, every time the receiving area changes due to moving, etc., this channel arrangement setting is made. In particular, in a receiving apparatus that involves movement such as mobile or in-vehicle, it is necessary to reset the channel arrangement every time it passes through the boundary of the region where the channel arrangement is changed.
[0006]
An example of a conventional terrestrial digital broadcast receiver is shown in FIG.
FIG. 3 is a block diagram showing the overall configuration of a conventional terrestrial digital broadcast receiver.
In the figure, a conventional terrestrial digital broadcast receiver (digital broadcast receiver 9) includes a CPU 91 of a microcomputer which is mounted on the receiver and performs a channel selection operation, and data reading in which channel preset data for each region is written. Stores ROM 92, which is a dedicated memory, I / O-IF (93) serving as an interface connecting peripheral blocks of CPU 91 and other blocks, RAM 94, which is a working memory, tuner 95, and data set by the viewer. E2P-ROM (96) which is a non-volatile memory (E2-PROM).
[0007]
The operation of the conventional terrestrial digital broadcast receiver shown in FIG. 3 will be described below.
When a user who is a viewer performs an operation of setting a region code or the like from a channel setting screen such as a menu, the CPU 91 selects a selected region code from the storage contents of the ROM 92 in which channel preset data for each region is written. Channel preset data corresponding to the area is read and written into the E2P-ROM (96) which is a nonvolatile memory.
[0008]
When the user presses the direct channel selection button, the CPU 91 reads out the frequency value of the broadcasting station assigned to the selected direct channel selection button from the E ² P-ROM (96) which is a nonvolatile memory, and the tuner. As a result, the channel selection is completed. However, in order to speed up the processing, the frequency value of the broadcasting station allocated to the direct channel selection button is stored in advance in the RAM 94 which is a working memory, and is read out from the RAM 94. There is also.
[0009]
FIG. 4 is a flowchart showing a processing procedure when a conventional terrestrial digital broadcast receiving apparatus is used.
After purchasing the receiver, the user inputs the region code of the region where the receiver is used into the receiver (step X1). As a result, the CPU 91 of the receiver reads channel preset data (table format) of the region that matches the input region code from the ROM 92 (step X2). Next, the CPU 91 writes the input region code or the channel preset data read from the ROM 92 into the E ² P-ROM (96) which is a nonvolatile memory (step X3).
[0010]
During normal viewing, a channel is set based on the data written in the E ² P-ROM (96), and the tuner 95 selects a channel with the set channel. The broadcast of the set channel can be viewed (step X4).
[0011]
However, here, when it is necessary to change to a channel plan corresponding to the current region, the channel arrangement setting (re-setting) based on the new channel plan is performed by the user (step X5). However, since the channel table stored in the ROM 92, which is a read-only memory, cannot be changed, the viewer obtains the new channel plan data after the change and manually rewrites the setting (step X6). Next, the tuner 95 selects a channel with the rewritten channel data (step X6). As a result, the viewer can watch the broadcast in this region for the first time.
[0012]
[Problems to be solved by the invention]
By the way, in the above conventional terrestrial digital broadcast receiving device, it is required that the channel setting at the time of purchase of the receiver by the user is designed so that it can be easily performed manually in the area where the receiver is used. Is done. However, the state once set is not automatically changed by the receiver. Therefore, when the receiver itself moves and the above-described channel arrangement changes, the user must manually receive each time of this movement. There was a problem that it was necessary to reset the channel arrangement on the machine.
[0013]
In particular, it is presumed that when terrestrial digital broadcasting is started, reception while moving becomes possible, and the number of cases where the channel arrangement should be reset increases.
For example, in the case of the receiver shown in FIG. 3, the channel preset data for each region that the receiver is equipped with is originally stored in the ROM 92, which is a memory for the microcomputer. there were.
[0014]
For this reason, with the conventional technology, when the terrestrial digital broadcasting is started, if the channel arrangement in the destination area is different from the channel arrangement before the movement, the user can manually set the channel in the existing receiver. There was a problem that the setting change processing had to be performed.
More specifically, the channel setting change process requires the user to perform a manual operation of manually changing all the settings stored in correspondence with the direct channel selection buttons on the remote controller. Therefore, there is a problem that it becomes a heavy burden on the viewer user.
[0015]
When there are many channel arrangements that are changed due to long-distance driving, etc., the user needs to perform the above-mentioned troublesome manual channel setting each time, and this work is specifically received in the destination area. Since every possible broadcast is manually set by the user, the amount of work is very large.
[0016]
The present invention has been made in view of the above-described conventional problems, and when the receiver moves and the channel arrangement changes, the destination channel arrangement is automatically set for the receiver. An object of the present invention is to provide a receiver for digital terrestrial broadcasting.
[0017]
Another object of the present invention is to provide a digital terrestrial broadcast receiving method capable of automatically setting a destination channel arrangement for a receiver when the receiver moves and the channel arrangement changes. It is to provide.
[0018]
[Means for Solving the Problems]
In order to solve the above problems, a terrestrial digital broadcast receiving apparatus according to the present invention is a terrestrial digital broadcast receiving apparatus comprising means for setting a channel arrangement corresponding to a region code set by a user. A reception area change detection means for detecting a change in area, and when the change in the reception area is detected by the reception area change detection means, the reception area after the change is determined and corresponds to the reception area after the change. The receiving area identifying means for acquiring channel arrangement data, and the channel arrangement resetting means for setting the channel arrangement based on the channel arrangement data acquired by the receiving area identification means.
By configuring in this way, when the receiver moves and the channel arrangement changes, the channel arrangement of the destination area can be automatically set for the receiver. A receiving device can be realized.
[0019]
The reception area change detecting means detects the change of the reception area by a reception signal of GPS or FM multiplex broadcasting.
With this configuration, the change in the reception area can be detected using an existing car navigation system (hereinafter, information such as GPS signals, FM multiplex broadcasts, and VICS data is received). Therefore, the cost increase of the apparatus can be suppressed.
[0020]
The reception area change detecting means monitors the reception signal of the GPS or FM multiplex broadcast at a predetermined constant period and detects the change of the reception area from a change in the signal level of the reception signal.
By configuring in this way, the change in the reception area can be detected easily using an existing car navigation system, so that the cost of the apparatus can be suppressed.
[0021]
The reception area change detection means may use the GPS or the FM multiplex broadcast reception computer system.
By configuring in this way, the reception area change detecting means can be configured using a computer system for an existing car navigation system, so that the cost of the apparatus can be suppressed.
[0022]
Further, the reception area identifying means determines the changed reception area from the reception signal of the GPS or the FM multiplex broadcast.
By configuring in this way, it is possible to determine the reception area after the change using an existing car navigation system, so it is possible to suppress an increase in the cost of the device.
[0023]
Further, the reception area identifying means can use the GPS or the CPU for receiving the FM multiplex broadcast.
By configuring in this way, the reception area identifying means can be configured using a computer system for an existing car navigation system, so that the cost of the apparatus can be suppressed.
[0024]
The terrestrial digital broadcast receiving method according to the present invention is a terrestrial digital broadcast receiving method comprising means for setting a channel arrangement corresponding to an area code set by a user, and detects a change in the reception area. When a change in the reception area is detected by the reception area change detection step and the reception area change detection step, the reception area after the change is determined, and channel arrangement data corresponding to the reception area after the change is acquired. A reception area identification step, and a channel arrangement resetting step for setting a channel arrangement based on the channel arrangement data acquired in the reception area identification step.
By configuring in this way, when the receiver moves and the channel arrangement changes, the channel arrangement of the destination area can be automatically set for the receiver. A receiving method can be realized.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a terrestrial digital broadcast receiver according to the present invention will be described below in detail with reference to the drawings.
In the description of this embodiment, the terrestrial digital broadcast receiving apparatus according to the present invention will be described in detail. However, the terrestrial digital broadcast receiving method according to the present invention is realized as a terrestrial digital broadcast receiving apparatus. Since it is a method, the description regarding the reception method of the said terrestrial digital broadcasting is contained in the following description.
[0026]
FIG. 1 is a block diagram showing the overall configuration of a terrestrial digital broadcast receiver according to an embodiment of the present invention.
In FIG. 1, the terrestrial digital broadcast receiver of the present embodiment includes a digital broadcast receiver 1 and a GPS (Global Positioning System) / FM multiplex receiver 2.
[0027]
The digital broadcast receiver 1 includes a CPU 11 of a microcomputer that is mounted on the receiver and performs a channel selection operation, a ROM 12 that is a data read-only memory in which channel preset data for each region is written, peripheral blocks of the CPU 11 and other blocks. An I / O-IF (13) that bears an interface to be connected, a RAM 14 that is a working memory, a tuner 15, and an E ² P-ROM (16) that is a nonvolatile memory for storing data set by a viewer Prepare.
[0028]
The GPS / FM multiplex receiver 2 includes a GPS or FM multiplex antenna 21 for receiving GPS radio waves or FM multiplex broadcast radio waves, and a GPS or FM multiplex tuner 22 for selecting GPS radio waves or FM multiplex broadcast radio waves. A CPU 23 which is a microcomputer for the GPS or FM multiplex tuner 22, and a ROM 24 which is a data read-only memory in which channel arrangement data for each area (table format channel arrangement information assigned to each area) is written; An I / O-IF (25) serving as an interface connecting the peripheral blocks of the CPU 23 and other blocks is provided.
[0029]
The ROM 12 of the digital broadcast receiver 1 can store channel arrangement data corresponding to the shipping destination of this receiver.
The GPS / FM multiplex receiver 2 can receive information used in a car navigation system such as a GPS signal, FM multiplex broadcast, and VICS data.
The ROM 24 of the GPS / FM multiplex receiver 2 can store channel arrangement data corresponding to an area in a sufficient range where the user is assumed to travel with the receiver.
[0030]
The ROM 24 may be a memory originally attached to the GPS or FM multiplex tuner 22 or may be a memory provided separately.
Note that the CPU 23, the ROM 24, and the I / O-IF (25) of the GPS / FM multiplex receiver 2 are originally a computer system for receiving GPS or FM multiplex broadcasting.
[0031]
Hereinafter, each component included in the terrestrial digital broadcast receiving apparatus of the present embodiment will be described.
When a user who is a viewer sets a region code or the like from a channel setting screen such as a menu, channel arrangement data (channel preset data) for each region in the ROM 12 of the read-only memory is read by the CPU 11 of the microcomputer and is nonvolatile. Is written in the E ² P-ROM (16) of the memory. At the same time, the set region code is also sent to the CPU 23 which is a microcomputer for the GPS or FM multiplex tuner 22.
[0032]
When the user presses the direct channel selection button, the CPU 11 writes the above-described channel arrangement data with the frequency value of the broadcasting station assigned to the selected direct channel selection button (the channel selection button pressed by the user). Is read out from the E ² P-ROM (16) and set in the tuner 15, whereby the channel selection is completed. However, in order to speed up the processing, the frequency value of the broadcasting station assigned to the direct channel selection button may be stored in advance in the RAM 14 which is a working memory and read from the RAM 14. Is possible.
[0033]
On the other hand, the GPS / FM multiplex receiver 2 configured as a set with the digital broadcast receiver 1 receives the FM multiplex broadcast. Here, the receiver such as the reception after the movement of the receiver is performed. When the reception area is changed, the CPU 23 which is a microcomputer for the GPS or FM multiplex tuner 22 detects that the reception area has been changed (reception area change detection means), and the received GPS or FM multiplex broadcast is received. The changed reception area is determined from the received signal (reception area identification means).
[0034]
Also, new channel arrangement data corresponding to this reception area is obtained from the ROM 24, and the new channel arrangement data after the change is obtained via the I / O-IF (25) on the digital broadcast receiver 1 side E ² P-ROM. (16) to update the channel arrangement data (preset data) stored in the E ² P-ROM (16) with the new channel arrangement data after the change (channel arrangement resetting means).
[0035]
The channel arrangement information unique to each region is acquired by a GPS or FM multiplex tuner 22 that receives FM multiplex broadcasts, and this information is stored as data by the CPU 23, via the I / O-IF (25). It is also possible to send it to the digital broadcast receiver 1 side.
[0036]
Further, the reception sensitivity (signal level of the reception signal) of the tuner 15 is monitored by the CPU 23 for the FM multiplex tuner 22 at a predetermined constant period (time interval). Is detected and the current reception area is specified when the reception sensitivity reaches a signal level that can be viewed after the receiver has moved, and the channel arrangement data corresponding to the specified current reception area Is obtained from the ROM 24, sent to the E ² P-ROM (16) on the digital broadcast receiver 1 side via the I / O-IF (25), and stored in the channel data. (Preset data) can be updated.
[0037]
FIG. 2 is a flowchart showing a processing procedure when using the terrestrial digital broadcast receiving apparatus according to the embodiment of the present invention.
Hereinafter, a processing procedure when the digital terrestrial broadcast receiving apparatus according to the present embodiment is used will be described with reference to FIG.
First, when using the receiver for the first time, the user inputs the area code of the area where the receiver is used into the receiver and sets the area code (step S1).
[0038]
As a result, the CPU 11 of the digital broadcast receiver 1 reads channel preset data (table format) in the region that matches the input region code from the ROM 12 (step S2). Next, the CPU 11 stores the set area code or the read channel plan data in the E2P-ROM (16) as user setting data (step S3). Simultaneously with this storage, the set region code is also sent to the CPU 23 which is a microcomputer for the GPS or FM multiplex tuner 22.
[0039]
During normal viewing, the CPU 11 sets a channel based on the stored data in the E ² P-ROM (16) and causes the tuner 15 to select a channel, whereby the user views the broadcast. (Step S4).
At the same time as the channel selection, the CPU 11 acquires channel arrangement data corresponding to the current region from the channel preset data, and sets the channel arrangement in the apparatus based on this data (step S5).
[0040]
Here, when the apparatus is moved, the reception area of the apparatus is also changed (step S6). In this case, the CPU 23 that is the microcomputer for the GPS or FM multiplex tuner 22 detects that the reception area has been changed, and the received reception area that has been changed is determined from the received GPS or FM multiplex broadcast reception signal. New channel arrangement data corresponding to the reception area is acquired from the ROM 24 (step S7).
[0041]
Next, the CPU 23 sends the acquired new channel arrangement data after the change to the E ² P-ROM (16) on the digital broadcast receiver 1 via the I / O-IF (25), and this channel. The channel arrangement data (preset data) stored in the E ² P-ROM (16) is updated with the arrangement data. As a result, a new channel arrangement is set in the receiver (step S8).
[0042]
As a result, the user can select a channel based on the new channel arrangement (that is, when the user presses the direct channel selection button, the CPU 11 allocates the selected direct channel selection button). The frequency value of the broadcast station is read from the E ² P-ROM (16) in which the above-described channel arrangement data is written and set in the tuner 15, thereby completing the channel selection).
[0043]
According to this embodiment, the detection of the change of the reception area and the acquisition of the channel arrangement corresponding to the new reception area after the change are automatically performed by receiving the GPS or FM multiplex broadcast for the navigation system with this apparatus. After that, the new channel arrangement after the change of the reception area is automatically performed by this apparatus, so that there is an effect that the user does not need to manually reset the channel arrangement accompanying the movement of the reception area. .
[0044]
Further, according to this embodiment, the information processing of this apparatus necessary for detecting the change of the reception area, obtaining the channel arrangement corresponding to the new reception area after the change, and performing the new channel arrangement after the change of the reception area. As a means, since the CPU 23 responsible for information processing for GPS or FM multiplex broadcasting is used, there is no need to install a new CPU, and there is an effect that the configuration of the apparatus can be simplified.
[0045]
Note that at least a part of the processing of each component of the terrestrial digital broadcast receiving apparatus according to the present invention is executed by computer control, and the above processing is performed according to the procedure shown in part of the flowchart of FIG. A program or the like to be executed by a computer may be distributed after being stored in a computer-readable recording medium such as a semiconductor memory, a CD-ROM, or a magnetic tape. A computer including at least a microcomputer, a personal computer, and a general-purpose computer may read the program from the recording medium and execute the program.
[0046]
【The invention's effect】
As described above, according to the terrestrial digital broadcast receiving apparatus of the present invention, stationary and / or portable terrestrial digital equipped with means for setting a channel arrangement corresponding to a region code set by a user. In the broadcast receiving apparatus, when a change in the reception area is detected, when the change in the reception area is detected, the reception area after the change is determined, and the channel arrangement data corresponding to the reception area after the change is acquired, Further, since the channel arrangement is set based on the acquired channel arrangement data, when the receiver moves and the channel arrangement changes, the channel arrangement of the destination area is changed to the receiver. It is possible to realize a receiver for digital terrestrial broadcasting that can be automatically set.
[0047]
Further, a series of processing means from the change of the reception area to the acquisition of the changed channel arrangement can be configured by using an existing car navigation system that receives GPS signals, FM multiplex broadcasting, VICS data, and the like. Therefore, the cost increase of the apparatus can be suppressed.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing the overall configuration of a terrestrial digital broadcast receiving apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart showing a processing procedure when using a terrestrial digital broadcast receiver according to an embodiment of the present invention.
FIG. 3 is a block diagram showing the overall configuration of a conventional terrestrial digital broadcast receiver.
FIG. 4 is a flowchart showing a processing procedure when a conventional terrestrial digital broadcast receiver is used.
[Explanation of symbols]
1 Digital Broadcasting Receiver 2 GPS / FM Multiplex Receiver 11, 23 CPU
12,24 ROM
13,25 I / O-IF
15 Tuner 16 E ² P-ROM

Claims (7)

In a terrestrial digital broadcast receiver having means for setting a channel arrangement corresponding to a region code set by a user,
A reception area change detection means for detecting a change in the reception area;
When a change in the reception area is detected by the reception area change detection means, the reception area after the change is determined, and reception area identification means for acquiring channel arrangement data corresponding to the changed reception area;
Channel arrangement resetting means for setting a channel arrangement based on the channel arrangement data acquired by the reception area identifying means;
A terrestrial digital broadcast receiver characterized by comprising: 2. The reception apparatus for digital terrestrial broadcasting according to claim 1, wherein the reception area change detecting means detects the change of the reception area by a reception signal of GPS or FM multiplex broadcasting. The reception area change detection means monitors the received signal of the GPS or FM multiplex broadcast at a predetermined fixed period and detects the change of the reception area from a change in the signal level of the reception signal. The terrestrial digital broadcast receiving apparatus according to claim 2. 4. The terrestrial digital broadcast receiving apparatus according to claim 2, wherein the reception area change detecting means uses the GPS or the FM multiplex broadcast receiving computer system. 2. The receiving apparatus for terrestrial digital broadcasting according to claim 1, wherein the receiving area identifying means determines the changed receiving area from the received signal of the GPS or the FM multiplex broadcasting. 6. The receiver for digital terrestrial broadcasting according to claim 5, wherein the reception area identifying means uses a CPU for receiving the GPS or the FM multiplex broadcast. In a method for receiving terrestrial digital broadcasting comprising means for setting a channel arrangement corresponding to a region code set by a user,
A reception area change detection step for detecting a change in the reception area;
When the reception area change is detected by the reception area change detection step, the reception area after the change is determined, and the reception area identification step for acquiring channel arrangement data corresponding to the changed reception area;
A channel arrangement resetting step for setting a channel arrangement based on the channel arrangement data acquired by the reception area identifying step;
A terrestrial digital broadcast receiving method, comprising:

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