JP2007214692A - Analog broadcast receiver and dvd recorder provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an analog broadcast receiver capable of displaying an EPG of a broadcast station that is newly opened after the production thereof. <P>SOLUTION: The DVD recorder 10 provided with the analog broadcast receiver includes: a reception section 11 for receiving a television broadcast radio wave; an EPG extract section 14 for extracting EPG data from a VBI of the television broadcast radio wave; a ROM for storing a GCN table for listing up GCN codes; and a control section 16 for extracting EPGs of broadcast stations registered in the GCN table and outputting the extracted EPGs as its control, and the DVD recorder 10 is configured to analyze the received EPG data and add a newly detected GCN code to the GCN table when detecting the new GCN code not existing in the GCN table. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an analog broadcast receiver using EPG and a DVD recorder provided with the same.

  2. Description of the Related Art Conventionally, a technique for superimposing a character signal on a broadcast radio wave of terrestrial analog broadcasting and transmitting an EPG (Electronic Program Guide) relating to the genre of the program to be broadcast and the broadcast time has been widespread. This EPG is taken out by a broadcast receiving apparatus such as a television broadcast receiving apparatus and displayed as a program guide on the TV screen, so that the program can be searched according to the viewer's preference. This broadcast receiving apparatus is also mounted on a video tape recorder, a DVD recorder, an HDD recorder, and the like.

  FIG. 5 is a schematic diagram showing a system configuration of a G guide system 100 for displaying an EPG on a television screen. On the transmitting side, the G guide system 100 converts program guide information created by a broadcaster into a predetermined file format, compresses and encrypts it, and then VBI (vertical blanking time: vertical blanking time) of TV broadcast radio waves. Interval) is inserted and organized, and transmitted from the sending device to each broadcast receiving device. On the other hand, the receiving side receives a television broadcast radio wave from the broadcast receiving device, takes out a character signal from the VBI as data, temporarily stores this data in a memory or the like, and then decrypts and decompresses the data, thereby Are taken out and displayed as a program guide on the TV screen.

  By the way, various proposals have been made for the use of EPG. For example, Patent Document 1 discloses a program guide data collection and distribution system. According to this document, each broadcasting station provides its own data to all-station EPG data, and acquires and distributes data from other stations from all-station EPG data. Thus, even when the number of broadcasting stations is newly increased, EPG can be provided without changing the system of each station.

  Patent Document 2 discloses a program information display apparatus that determines increase / decrease in services from a service description table and an event information table of digital broadcasting.

Further, Patent Document 3 discloses a digital broadcast receiving apparatus corresponding to a new broadcasting station by channel search at the initial setting of the device or re-channel search at the time of non-viewing.
JP 2000-101525 A JP 2001-86425 A JP 2004-128883 A

  However, Patent Document 1 described above is an invention relating to the EPG transmission side, and does not describe the reception side. In Patent Document 2, a list of currently viewable channels can be obtained, but this does not correspond to the case where a new broadcasting station is established. In Patent Document 3, a broadcast program can be viewed even if a new broadcast station is established by re-channel search for detecting a frequency, but a technique for acquiring an EPG of a new broadcast station is not described.

  As described above, in the conventional broadcast receiving apparatus, when there is a newly opened broadcast station, a broadcast program can be received by detecting the frequency, but it is possible to display an EPG related to the broadcast station. Can not. This is because the broadcast receiving apparatus has a GCN table in which GCN codes (broadcast station numbers) are listed in advance, and is configured to display only EPGs of broadcast stations registered in the GCN table. If it is desired to be able to display the EPG of a newly opened broadcasting station, it is possible to update the EPG software in the apparatus, but this is expensive and time-consuming.

  An object of the present invention is to provide an analog broadcast receiving apparatus capable of displaying an EPG of a broadcasting station newly established after production. Another object of the present invention is to provide a DVD recorder equipped with this analog broadcast receiving apparatus.

In order to achieve the above object, the present invention includes a receiving unit that receives a television broadcast radio wave, an EPG extraction unit that extracts EPG data from the VBI of the television broadcast radio wave, and a storage unit that stores a GCN table listing GCN codes. In an analog broadcast receiving apparatus comprising a control unit that extracts and outputs an EPG of a broadcasting station registered in the GCN table,
The received EPG data is analyzed, and when a new GCN code not in the GCN table is detected, the detected new GCN code is added to the GCN table.

  According to this configuration, if there is a newly opened broadcast station after the production of the analog broadcast receiver, the GCN code corresponding to the new broadcast station is detected from the received EPG data, and the GCN table in the storage unit is automatically set. By updating, the EPG of the newly opened broadcasting station can be displayed immediately.

A receiving unit that receives a television broadcast radio wave, an EPG extraction unit that extracts EPG data from the VBI of the television broadcast radio wave, a storage unit that stores a GCN table listing GCN codes, and a broadcast station registered in the GCN table An analog broadcast receiving device including a control unit that controls to extract and output the EPG
The received EPG data is analyzed, and when a new GCN code not in the GCN table is detected, the detection result is notified,
If there is an instruction to add the new GCN code to the GCN table, the addition is executed.

  According to this configuration, if there is a broadcast station newly opened after the production of the analog broadcast receiver, the GCN code corresponding to the new broadcast station is detected from the received EPG data, and the user is notified of the detection result. If there is an instruction from, the EPG of the newly opened broadcasting station can be displayed by updating the GCN table in the storage unit.

When the present invention is embodied, a receiving unit that receives a television broadcast radio wave, an EPG extraction unit that extracts EPG data from the VBI of the television broadcast radio wave, a ROM that stores a GCN table listing GCN codes, and the GCN In a DVD recorder provided with an analog broadcast receiving device having a control unit that controls to extract and output an EPG of a broadcasting station registered in a table,
The received EPG data is analyzed, and when a new GCN code not in the GCN table is detected, the detected new GCN code is added to the GCN table.

  According to the present invention, since the EPG of a broadcasting station newly established after production can be displayed, the user can effectively use the latest EPG.

  Hereinafter, a DVD recorder equipped with an analog broadcast receiving device will be described as an example. FIG. 1 is a block diagram showing the configuration of the DVD recorder, and FIG. 2 is a block diagram showing the configurations of the EPG extraction unit and control unit of FIG. 1 and 2 show only the configuration necessary for the present invention, and other configurations that do not need to be described are omitted. The DVD recorder 10 includes a receiving unit 11, an audio detection circuit 12, a video detection circuit 13, an EPG extraction unit 14, a DVD recording / reproducing unit 15, a control unit 16, an audio output terminal 17, a video output terminal 18, a light receiving unit 19, and a remote controller 20. Etc.

  The receiving unit 11 includes an antenna 11a, and has a function as a tuner that receives a broadcast radio wave transmitted from a broadcasting station by the antenna 11a, and selects and receives a desired broadcast program. The receiving unit 11 extracts a video signal and an audio signal from the received broadcast radio wave, and outputs the video signal and the audio signal to the video detection circuit 13 and the audio detection circuit 12, respectively. The receiving unit 11 outputs the broadcast radio wave to the EPG extraction unit 14 for extracting the character signal superimposed on the broadcast radio wave.

  The audio detection circuit 12 detects an audio signal from the video signal and the audio signal input from the receiving unit 11, amplifies the audio signal by an amplifier circuit (not shown), and outputs it from the audio output terminal 17. The audio output terminal 17 is connected to a speaker (not shown) such as a television broadcast receiver.

  The video detection circuit 13 detects a video signal from the video signal and the audio signal input from the receiving unit 11, amplifies the video signal by an amplifier circuit (not shown), and outputs the video signal from the video output terminal 18. The video output terminal 17 is connected to a monitor (not shown) such as a television broadcast receiver.

  The EPG extraction unit 14 extracts a character signal transmitted by being superimposed on a broadcast radio wave, and acquires an EPG. Here, the EPG includes information such as the GCN code of the broadcasting station, the program name of the program, the broadcast date, the program start time, the program end time, the reservation code, the channel, and the genre for about two weeks. Information is stored in the EPG storage unit (see FIG. 2).

  The DVD recording / reproducing unit 15 records the received broadcast program on the inserted DVD and reproduces data recorded on the DVD.

  When a channel selection operation, a mode selection operation, or the like sent from the remote controller 19 is input through the light receiving unit 18, the control unit 16 drives and controls each unit of the DVD recorder 10 according to a system program or a control program.

  The EPG extraction unit 14 and the control unit 16 will be described in detail with reference to FIG. As shown in FIG. 2, the EPG extraction unit 14 includes a data capturing circuit 14a, a buffer memory 14b, an EPG storage unit 14c, an output IF 14d, and the like. The control unit 16 includes a storage unit including a CPU (Central Processing Unit) 16a, a ROM (Read Only Memory) 16b, and a RAM (Random Access Memory) 16c, an input IF 16d, and the like. And each part of the EPG extraction part 14 and each part of the control part 16 are connected by the bus | bath 16e.

  The data capturing circuit 14a extracts a character signal which is EPG data inserted into the VBI from the video signal input from the receiving unit 11, performs synchronous reproduction and error correction on the character signal, The data is temporarily stored in the buffer memory 14b. The buffer memory 14b outputs the accumulated EPG data to the EPG storage unit 14c in units of pages under the control of the CPU 16a.

  The EPG storage unit 14c stores EPG data transferred in units of pages from the buffer memory 14b, and updates and stores the EPG when it is time to send the EPG from the transmission device on the transmission side under the control of the CPU 16a. The output IF 14 outputs the EPG read from the EPG storage unit 14c to the monitor.

  The CPU 16a operates according to a control program stored in the ROM 16b and control data stored in the RAM 16c. The CPU 16a controls character signal timing control in the data fetch circuit 14a and data transfer from the data fetch circuit 14a to the buffer memory 14b. Further, the CPU 16a transfers the EPG data temporarily stored in the buffer memory 14b to the EPG storage unit 14c and stores it in the page unit.

  The CPU 16a controls the EPG extraction unit 14 to acquire new EPG data at the time when the EPG is transmitted from the transmission device on the transmission side. As a result, the EPG stored in the EPG storage unit 14c can be updated.

  Here, the CPU 16a controls to extract and output the EPG of the broadcasting station registered in the GCN table. In other words, EPGs of broadcasting stations that are not registered in the GCN table are not extracted and are therefore not displayed on the monitor. The GCN table here is a list of broadcast station names and their GCN codes in association with each other, and is stored in the ROM 16b. Broadcast stations that are open at the time of production are registered in advance in the GCN table, but broadcast stations that are subsequently opened are not registered in the GCN table. Therefore, the EPG of a newly opened broadcasting station cannot be displayed in the state at the time of shipment.

  Further, when an EPG display instruction is input from the remote controller 19, the CPU 16a reads the EPG from the EPG storage unit 14c, outputs the EPG from the output IF 14d, and displays the EPG on the monitor.

  The input IF 16d outputs an operation instruction input via the light receiving unit 18 to the CPU 16a.

  The control unit 16 also performs control so that the EPG of the newly opened broadcasting station can be displayed. This control will be described below. FIG. 3 is a flowchart showing the operation of the DVD recorder 10 corresponding to the establishment of a new broadcasting station.

  First, when EPG data is received in step S10, the process proceeds to step S11 where the EPG data is analyzed and a GCN code is detected. Then, the process proceeds to step S12, where the detected GCN code is compared with the GCN code in the GCN table stored in the ROM 16b. Determine whether or not.

  When a new GCN code is detected in step S12, the process proceeds to step S13, and the detected new GCN code is added to the GCN table. As a result, the EPG extraction unit 14 extracts the EPG of the broadcasting station corresponding to the new GCN code, and the EPG can be displayed on the monitor. When the user operates the remote controller 20 or the like to give an EPG display instruction, an EPG including a new broadcasting station is displayed.

  On the other hand, if a new GCN code is not detected in step S12, it is determined that there is no newly opened broadcasting station, and this process ends. In this case, when there is an instruction to display the EPG, the normal EPG is displayed.

  According to the above embodiment, if there is a newly opened broadcasting station after the production of the DVD recorder 10, the GCN code corresponding to the new broadcasting station is detected from the received EPG data, and the GCN table in the ROM 16b is automatically stored. By updating, the EPG of the newly opened broadcasting station can be displayed immediately. As a result, the user can effectively use the latest EPG.

  Next, another embodiment of control for enabling display of the EPG of a newly opened broadcasting station will be described. FIG. 4 is a flowchart showing an operation in another embodiment of the DVD recorder 10 corresponding to the establishment of a new broadcasting station. The same processes as those in FIG. 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  First, step S10 to step S12 are executed. If a new GCN code is detected in step S12, the process proceeds to step S20 to notify the detection result. For this notification, for example, a message indicating whether a new broadcast station is detected but a new GCN code may be added to the GCN table may be displayed on the monitor.

  Thereafter, the process proceeds to step S21, waits for an input instruction from the user, and if there is an instruction that the detected new GCN code may be added, the process proceeds to step S13, and the detected new GCN code is added to the GCN table. To do.

  On the other hand, if a new GCN code is not detected in step S12, or if there is an instruction not to add a new GCN code in step S21, this process ends.

  According to the above embodiment, if there is a newly opened broadcasting station after the production of the DVD recorder 10, the GCN code corresponding to the new broadcasting station is detected from the received EPG data, and the detection result is notified to the user. If there is an instruction from the user, the EPG of the newly opened broadcasting station can be displayed by updating the GCN table in the ROM 16b. As a result, the user can effectively use the latest EPG.

  The ROM 16b stores in advance a table in which frequencies corresponding to all the channels defined by the country are stored. On the other hand, since the EPG data includes channel information, it has been newly opened. When the GCN code of the broadcasting station is detected, the channel and frequency of the broadcasting station corresponding to this GCN code are known. Therefore, if control is performed so as to receive the frequency of this channel, the user can view the program of the newly opened broadcasting station.

  The broadcast receiving apparatus of the present invention can be mounted on a television broadcast receiving apparatus, a video tape recorder, a DVD recorder, an HDD recorder, or the like, or a complex machine thereof.

It is a block diagram which shows the structure of the DVD recorder of this invention. It is a block diagram which shows the structure of the EPG extraction part and control part of FIG. 1 of this invention. It is a flowchart which shows operation | movement of the DVD recorder corresponding to establishment of the new broadcasting station of this invention. It is a flowchart which shows the operation | movement in other embodiment of the DVD recorder corresponding to establishment of the new broadcasting station of this invention. It is the schematic which shows the system configuration | structure of the conventional G guide system.

Explanation of symbols

10 DVD recorder 11 Receiving unit 14 EPG extracting unit 16 Control unit 16b ROM

Claims (3)

A receiving unit that receives TV broadcast radio waves, an EPG extraction unit that extracts EPG data from the VBI of the TV broadcast radio waves, a ROM that stores a GCN table listing GCN codes, and broadcast stations registered in the GCN table In a DVD recorder provided with an analog broadcast receiving device having a control unit that controls to extract and output an EPG,
A DVD recorder characterized by analyzing received EPG data and adding a new detected GCN code to the GCN table when a new GCN code not found in the GCN table is detected. A receiving unit that receives a television broadcast radio wave, an EPG extraction unit that extracts EPG data from the VBI of the television broadcast radio wave, a storage unit that stores a GCN table listing GCN codes, and a broadcast station registered in the GCN table An analog broadcast receiving device including a control unit that controls to extract and output the EPG
An analog broadcast receiving apparatus that analyzes received EPG data and adds a detected new GCN code to the GCN table when a new GCN code not in the GCN table is detected. A receiving unit that receives a television broadcast radio wave, an EPG extraction unit that extracts EPG data from the VBI of the television broadcast radio wave, a storage unit that stores a GCN table listing GCN codes, and a broadcast station registered in the GCN table An analog broadcast receiving device including a control unit that controls to extract and output the EPG
The received EPG data is analyzed, and when a new GCN code not in the GCN table is detected, the detection result is notified,
The analog broadcast receiving apparatus, wherein if there is an instruction to add the new GCN code to the GCN table, the addition is executed.