JP2006080719A - Broadcasting receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcasting receiver enabling even a user who receives cable television distribution to perform correct preset registration and viewing. <P>SOLUTION: The broadcasting receiver comprises: a tuner 11 for receiving and demodulating broadcasting radio waves of a set frequency at the time of detecting them; a storage part 14 storing frequencies of broadcasting stations and cable television stations for respective areas; and a control part 15 for reading the frequency of the broadcasting station of the area from the storage part 14 and setting it to the tuner 11 at the time of confirming the area on the basis of the operation of an input part 16, registering the pertinent frequency in the storage part 14 when the broadcasting radio waves of the broadcasting station are received by the setting, reading the frequency of the cable television station of the same area from the storage part 14 and setting it to the tuner part 11 when there is even one frequency at which the broadcasting radio waves are not received, and registering the pertinent frequency in the storage part 14 when distribution signals of the cable television station are received by the setting. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a broadcast receiver such as a television receiver or a VTR.

Conventional broadcast receivers such as television receivers and VTRs are the frequencies of broadcast stations that can be viewed in the area when the user purchases a new one for the first time or when the broadcast station is different from the previous one due to moving, etc. Must be registered in the broadcast receiver as a preset. In order to preset the reception frequency, the frequency is sequentially changed within a predetermined range to search for a receivable frequency, and the user is allowed to input the residence area and is registered in advance at the time of factory shipment. There is a method of reading out channel information (channel number, frequency, etc.) for each residential area and registering the information as a preset (see, for example, Patent Document 1).
JP-A-10-257402 (5th page, FIGS. 1, 2 and 4)

  By the way, for example, if you want to improve the situation where it is difficult to view with poor antenna reception and standing up with an antenna, or subscribe to cable TV distribution to achieve BS / CS broadcast requests other than terrestrial broadcast In such a case, the frequency that can be viewed through cable distribution and the channel information for each residential area that is registered in advance in the broadcast receiver do not always match, so that the preset registration using the channel information for each residential area may not allow normal viewing. there were.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a broadcast receiver that can perform preset registration correctly and can be viewed even for users who receive cable television distribution.

  A broadcast receiver according to the present invention searches for a broadcast signal based on set frequency information, receives and demodulates a broadcast signal based on the frequency information, and receives the demodulated reception. Separating means for separating video / audio data and other data from signals, storage means for storing frequency information of broadcasting stations and cable television stations for each area, input means for specifying the area, and input means When the area is confirmed based on the operation, the frequency information of the broadcasting station in the area is read from the storage means and set in the signal receiving means, and when the broadcast signal of the broadcasting station is received by this setting, the corresponding frequency information When there is at least one frequency information for which no broadcast signal has been received and the first control means for registering the information in the storage means, the frequency information of the cable TV station in the same region is stored. Reading from the set to the signal receiving means, when a broadcast signal of cable television station is received by the setting, in which a second control means for registering the corresponding frequency information in the storage means.

  According to the present invention, when the area is confirmed based on the operation of the input means, the frequency information of the broadcasting station in the area is read from the storage means and set in the signal receiving means, and the broadcast signal of the broadcasting station is received by this setting. When there is at least one frequency information for which no broadcast signal has been received, the frequency information of the cable TV station in the same region is read from the storage means to receive the signal. When the broadcast signal of the cable TV station is received by this setting, the corresponding frequency information is registered in the storage means, so that the preset registration is also correctly performed for the user who receives the cable TV distribution. Therefore, there is an effect that it is possible to view cable TV program broadcasts.

Embodiment 1 FIG.
1 is a block diagram showing a schematic configuration of a broadcast receiver according to Embodiment 1 of the present invention, FIG. 2 is a diagram showing an example of frequency information of a broadcasting station for each region in Japan, and FIG. It is a figure which shows an example of the frequency information of a cable television station.
In FIG. 1, a broadcast receiver 10 is a receiver of a television receiver, for example, which receives a program broadcast through a broadcast radio wave 22 from a broadcast station 20 or a broadcast relay station 21, and a cable distribution signal from a cable TV station 30. 31 is received. The broadcast relay station 21 is a device that relays to an area where the broadcast radio wave 22 from the broadcast station 20 does not reach directly. The cable television station 30 receives and reproduces the broadcast radio wave 22 from the broadcast station 20 or the broadcast radio wave 22 from the broadcast relay station 21, and distributes the reproduced program broadcast to the subscriber.

  The broadcast receiver 10 described above includes a tuner unit 11 (signal receiving means), a separation unit 12, a decoding / playback unit 13, a storage unit 14, a control unit 15, and an input unit 16. The tuner unit 11 receives the broadcast radio wave 22 or the cable television distribution signal 31 having the frequency (frequency information) set by the control unit 15, demodulates it, and sends it to the separation unit 12. Further, when the broadcast radio wave 22 or the cable television distribution signal 31 having the set frequency is received, the control unit 15 is notified accordingly. The separation unit 12 separates the signal demodulated by the tuner unit 11 into video / audio data and other data. The decoding / playback unit 13 decodes the video / audio data and outputs the video and audio to a display unit (not shown).

  As shown in FIG. 2, the storage unit 14 stores the name of each country, the name of each prefecture, the name of the municipality for each prefecture, and the name of a broadcasting station that can be received for each city (area) (A broadcast). Station, B broadcast station..., Frequency band (VHF, UHF) and channel (1ch, 3ch...) Are stored as the first frequency information, and it is possible to receive services for each region as shown in FIG. The names of cable television stations (cable television A station, B station...) And frequency bands (VHF, MID...) Are stored as second frequency information. In addition, various data necessary for the control unit 15 to operate the receiver 10 normally is stored. The first and second frequency information and various data are written before shipment from the factory. The input unit 16 is a remote controller for operating power on / off, channel selection, VTR recording reservation, and the like.

  When detecting the preset registration instruction from the input unit 16, the control unit 15 first displays the local name of the whole country on the display unit, and when the local name is designated, displays the name of each prefecture. When a prefecture name is specified, the name of each municipality in that prefecture is displayed. When a city name is specified, it is determined that the confirmation of the residential area has been completed, and the first frequency information set for that residential area is stored. The frequency is read from the unit 14 and extracted for each broadcasting station and set in the tuner unit 11. When the same frequency detection notification is received from the tuner unit 11 every time this frequency is set, the corresponding frequency is stored in the storage unit 14. When there is at least one frequency that cannot be received by the first control means for performing preset registration, the second frequency information set in the same residential area is read from the storage unit 14 and the frequency of the cable television station is set to a low frequency. And a second control unit that presets the corresponding frequencies in the storage unit 14 when receiving notification of detection of the same frequency from the tuner unit 11. . After the preset registration, the frequency data is read from the storage unit 14 based on the channel operation of the input unit 16 and set in the tuner unit 11 to receive the broadcast of the frequency.

  Next, the operation at the time of presetting the reception frequency in the broadcast receiver according to the first embodiment will be described with reference to FIGS. FIG. 4 is a diagram showing an example of frequency arrangement of broadcast radio waves transmitted from each broadcasting station in the city M, and FIG. 5 is an example of frequency arrangement of cable distribution signals distributed from the cable TV station C in the city. FIG. 6 is a flowchart showing an operation at the time of presetting the reception frequency in the broadcast receiver according to the first embodiment.

  When detecting the reception frequency preset instruction from the input unit 16, the control unit 15 of the broadcast receiver 10 confirms the user's residence area (S1). First, the name of a region in the whole country is displayed on a display unit (not shown). When “Kanto” is specified by the input unit 16, for example, the name of each prefecture in that region is displayed. "" Is designated, the name of each municipality of the prefecture is displayed. When, for example, M city is designated from each municipality name, the confirmation of the residential area is completed (see FIG. 2). At this time, the first frequency information of the residential area (M city) is read from the storage unit 14, the frequency of the first broadcasting station A is extracted (S2), and is set in the tuner unit 11 (S3). Then, it is determined whether or not the notification of the same frequency is received from the tuner unit 11 (S4). If there is no notification of detection, the process proceeds to S6. The station frequency is preset registered in the storage unit 14 (S5). After that, it is determined whether or not all the frequencies of the first frequency information in the city M have been confirmed (S6). When all the frequencies are confirmed, the process proceeds to S8. The frequency of the next broadcasting station B is extracted from the frequency information (S7) and set in the tuner unit 11 (S3).

  In M city, for example, as shown in FIG. 4, since there are five frequencies in the VHF band and two frequencies in the UHF band, the operations from S3 to S7 are repeated until the frequency of the G broadcasting station is confirmed. When all the frequencies of the first frequency information are confirmed in S6 when this operation is repeated, it is determined whether or not there is an undetected frequency in the first frequency information (S8). If there is no undetected frequency, it is determined that the frequencies of all broadcasting stations in M city have been preset registered in the storage unit 14, and the above-described series of operations is terminated.

  When there is an undetected frequency, it is determined that there is a possibility of receiving cable television distribution, and is included in the second frequency information of the cable television C station in the same area (M city). The lowest frequency among the existing frequencies is extracted (S9) and set in the tuner unit 11 (S10). Then, it is determined whether or not the notification of the same frequency has been received from the tuner unit 11 (S11). When there is no notification of detection, the process proceeds to S14, but when the notification of the same frequency is received from the tuner unit 11, the reception frequency And preset registration in the storage unit 14 (S12). Thereafter, it is determined whether or not all the frequencies of the cable TV C station in the city M have been confirmed (S15). When all the frequencies of the cable TV C station are confirmed, the preset registration of the frequency of the cable TV C station is terminated. However, when not all have been confirmed, the next frequency is extracted from the second frequency information (S14) and set in the tuner unit 11 (S3). In M city, for example, as shown in FIG. 5, since there are two frequencies in the MID band and five frequencies in the UHF band, the operations from S10 to S15 are repeated until the highest frequency is confirmed in the cable television C station. . While repeating this operation, if all the frequencies of the cable television C station in the city M are confirmed in S15, the preset registration of the frequency of the cable television C station is terminated.

  As described above, according to the first embodiment, in order to perform preset registration, the presence / absence of broadcast radio waves is confirmed using the frequency of the first frequency information in the residential area, and the frequency at which broadcast radio waves could not be detected is 1 When there is one, the search is performed within one or more frequency ranges registered in the second frequency information, so that the preset registration can be correctly performed even for a user who receives cable television distribution. There is an effect that it is possible to view a TV program broadcast.

Embodiment 2. FIG.
In the second embodiment, an analysis unit is added to the broadcast receiver of the first embodiment shown in FIG. 1, and frequency preset registration of terrestrial digital broadcasting, BS and CS digital broadcasting (hereinafter simply referred to as “digital broadcasting”) is performed. Is made possible. FIG. 7 is a block diagram showing a schematic configuration of a broadcast receiver according to Embodiment 2 of the present invention, and FIG. 8 is a diagram showing a breakdown of network information distributed by digital broadcasting. In addition, the same code | symbol is attached | subjected to the same or equivalent part as Embodiment 1 demonstrated in FIG. 1, and description is abbreviate | omitted.

  The broadcast receiver according to the second embodiment includes a tuner unit 11 (signal receiving means), a separation unit 12, a decoding / playback unit 13, a storage unit 14, a control unit 15, an input unit 16, and an analysis unit 17 ( Analysis means). The analysis unit 17 analyzes whether or not network information NIT (Network Information Table) exists in other data separated by the separation unit 12 (excluding video / audio data). The described frequency data (frequency information) is extracted and notified to the control unit 15.

  As shown in FIG. 8, the network information NIT described above is a digital broadcast (terrestrial digital broadcast or BS) described in “Chapter 6 Data Structure of Program Arrangement Information Standard ARIB STD-B10 used for Digital Broadcasting”. And CS digital broadcasting), information included in other data distributed simultaneously with the video / audio data of the program, and this information describes the frequency at which the broadcast station broadcasts. Note that digital broadcasting is not rewritten even if it is distributed by cable TV.

  As described in the first embodiment, the storage unit 14 stores the name of the country, the name of the prefecture for each country, and the name of the municipality for each prefecture. Broadcast station, B broadcast station..., Frequency band (VHF, UHF) and channel (1ch, 3ch...) Are stored as first frequency information, and the names of cable television stations that can receive services for each region ( Cable TV A station, B station...) And frequency bands (VHF, MID...) Are stored as second frequency information. Further, the name and frequency of a digital cable television station that can receive a service for each area, in which the name, frequency band (frequency information) and channel that can be received for each city (area) are stored as third frequency information. A band (frequency information) is stored as fourth frequency information. Further, as described in the first embodiment, various data necessary for the control unit 15 to operate the receiver 10 normally is stored, and the first and second frequency information and the third and third frequency information are stored. The frequency information 4 and various data 4 are written before shipment from the factory.

  In addition to the first and second control means described above, the control unit 15 reads out the third frequency information of the digital broadcasting station in the residential area specified by the input unit 16 from the storage unit 14 and extracts the frequency. When the tuner 11 is set and a digital broadcast radio wave is received by this setting, the third control means for preset registration of the corresponding frequency in the storage unit 14 and the analysis unit 17 when the reception frequency is registered. The fourth control means for determining whether or not the frequency is the same as the frequency detected by the first control means and notifying the result, and when there is at least one frequency at which the radio wave of the digital broadcast is not received, or the fourth control means When the notification indicates that both frequencies are different, the fourth frequency information of the digital cable television station in the same region is read from the storage unit 14 and the frequency is extracted to the tuner unit 11. Constant and, when the signal of the digital broadcast is received by the set, and a fifth control means for presetting register the corresponding frequency in the storage unit 14.

Next, the operation at the time of presetting the reception frequency of the digital broadcast in the broadcast receiver of the second embodiment will be described based on the flowchart shown in FIG.
When the control unit 15 of the broadcast receiver 10 detects the preset instruction of the reception frequency of the digital broadcast from the input unit 16, the control unit 15 confirms the user's residence area (S1). As in the first embodiment, when the municipality name of the residential area is determined according to the user's designation, the third frequency information of the residential area is read from the storage unit and the frequency of the digital broadcast is extracted (S2). The tuner unit 11 is set (S3). Then, it is determined whether or not the notification of the same frequency has been received from the tuner unit 11 (S4). When there is no notification of detection, the process proceeds to S6, but when the notification of the same frequency is received from the tuner unit 11, digital broadcasting is performed. Are preset registered in the storage unit 14 (S5). On the other hand, the analysis unit 17 analyzes whether or not the network information NIT exists in the other data separated by the separation unit 12, and when the information is detected, extracts the frequency data described in the NIT. To the control unit 15. When the frequency data from the analysis unit 17 is received, the control unit 15 determines whether the frequency data and the frequency preset and registered in the storage unit 14 are the same (S5a). If both frequencies are different, it is determined that there is a possibility that the distribution from the cable television station is received, and the process proceeds to S9. If the frequencies are the same, it is determined that the digital broadcast frequency is received. It is then determined whether all the frequencies of the third frequency information in the same area have been confirmed (S6). When all the frequencies are confirmed, the process proceeds to S8. When all the frequencies are not confirmed, the next frequency is extracted from the third frequency information (S7) and set in the tuner unit 11 (S3).

  When it is determined that all the frequencies of the third frequency information have been confirmed in S6 when the operations from S3 to S7 are repeated, it is determined whether or not there is an undetected frequency in the third frequency information. (S8). If there is an undetected frequency, it is determined that there is a possibility of receiving cable television distribution, and the process proceeds to S9. If there is no undetected frequency, all frequencies in the third frequency information are set. It is determined that the preset has been registered in the storage unit 14, and the series of operations described above is terminated.

  Further, when the operations from S3 to S7 are repeated, if it is determined in S5a that it is different from the frequency data described in the NIT, it is determined that there is a possibility of receiving cable television distribution, and the same region The lowest frequency is extracted from the frequencies included in the fourth frequency information of the digital cable television station (S9), and is set in the tuner unit 11 (S10). Then, it is determined whether or not the notification of the same frequency has been received from the tuner unit 11 (S11). When there is no notification of detection, the process proceeds to S14, but when the notification of the same frequency is received from the tuner unit 11, the reception frequency And preset registration in the storage unit 14 (S12). Thereafter, it is determined whether or not all the frequencies in the fourth frequency information have been confirmed (S15). When all the frequencies have been confirmed, the preset registration of the frequency of the digital cable television station is finished, but all have been confirmed. If not, the next frequency is extracted from the fourth frequency information (S14) and set in the tuner unit 11 (S3). While repeating the operations from S10 to S15, when it is determined in S15 that all the frequencies of the fourth frequency information have been confirmed, the preset registration of the reception frequency of the digital broadcast is terminated.

  As described above, if there is something that differs from the frequency broadcast by the broadcast station that starts by using the third frequency information for each residential area to check for the presence of digital broadcast radio waves to perform preset registration Since the search is performed by using the fourth frequency information described in the frequency band used by the cable television distribution, the preset registration can be correctly performed even for the user receiving the cable television distribution. It is possible to view the program broadcast of

It is a block diagram which shows schematic structure of the broadcast receiver which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the frequency information of the broadcasting station for every area | region of the whole country. It is a figure which shows an example of the frequency information of the cable television station for every area | region of the whole country. It is a figure which shows the example of arrangement | positioning of the frequency of the broadcast radio wave transmitted from each broadcasting station in M city. It is a figure which shows the example of arrangement | positioning of the frequency of the cable delivery signal delivered from the cable television C station in the same city. 4 is a flowchart showing an operation at the time of presetting a reception frequency in the broadcast receiver according to the first embodiment. It is a block diagram which shows schematic structure of the broadcast receiver which concerns on Embodiment 2 of this invention. It is a figure which shows the breakdown of the network information delivered by digital broadcasting. 6 is a flowchart showing an operation at the time of presetting the reception frequency of digital broadcast in the broadcast receiver of the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Broadcast receiver, 11 Tuner part, 12 Separation part, 13 Decoding / reproducing part, 14 Storage part, 15 Control part, 16 Input part, 17 Analysis part, 20 Broadcast station, 21 Broadcast relay station, 22 Broadcast radio wave, 30 Cable television station 31 Cable delivery signal.

Claims (2)

A signal receiving means for searching for a broadcast signal based on the set frequency information and receiving and demodulating when a broadcast signal based on the frequency information is detected;
Separation means for separating the demodulated received signal into video / audio data and other data;
Storage means for storing frequency information of broadcasting stations and cable television stations for each region;
Input means to identify the region;
When the area is confirmed based on the operation of the input means, the frequency information of the broadcasting station in the area is read from the storage means and set in the signal receiving means, and the broadcast signal of the broadcasting station is received by this setting Comprises first control means for registering relevant frequency information in the storage means;
When there is even one frequency information for which no broadcast signal has been received, the frequency information of the cable TV station in the same region is read from the storage means and set in the signal receiving means, and by this setting, the broadcast signal of the cable TV station is received. And a second control means for registering the corresponding frequency information in the storage means. The storage means stores frequency information of digital broadcasting stations and digital cable television stations for each region,
Analyzing whether there is frequency information in the other data separated by the separating means, and analyzing means to read when the frequency information is detected,
The frequency information of the local digital broadcasting station specified by the input means is read out from the storage means and set in the signal receiving means. When a digital broadcast signal is received by this setting, the corresponding frequency information is Third control means for registering in the storage means;
When frequency information is registered by the third control means, a fourth control means for determining whether the frequency information is the same as the frequency information read by the analysis means and notifying the result,
When there is only one frequency information for which a digital broadcast signal has not been received, or when the notification from the fourth control means indicates that both frequencies are different, the frequency information of the digital cable TV station in the same region Is read out from the storage means and set in the signal receiving means, and when a digital broadcast signal is received by this setting, a fifth control means is provided for registering the corresponding frequency information in the storage means. The broadcast receiver according to claim 1.

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