JP2001358563A - Mobile broadcast receiving method and mobile broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile broadcast receiving method and a mobile broadcast receiver capable of solving such a problem that, since broadcasting stations having the same broadcasting contents (programs) are stored, it takes time when calling up a station when selecting a channel, that the stored contents are too complicated to be grasped by a user due to the increased number of memories, and that too many stations in a group broadcasting the same programs cause the shortage of memories resulting in stations which are not stored. SOLUTION: Broadcasting stations having different frequencies and broadcasting the same contents are divided into groups based on the data of broadcasting stations which are previously stored in a first storage means 69. The data of the grouped stations are stored in a second storage means 70 in accordance with each selecting channel, and when a selection button 72 is selected, a tuner 62 is controlled to select a channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving method and a receiver for a mobile unit in which a channel selection is auto-preset to a television broadcast or a radio broadcast, and more particularly, to the same series broadcasting the same broadcast program. The present invention relates to a mobile broadcast receiving method and a mobile broadcast receiver that are suitable for channel selection in an area where stations are scattered and that effectively use a limited number of channel selection buttons.

[0002]

2. Description of the Related Art FIG. 4 shows the reception environment of a television broadcast in a certain area, taking channels and broadcast contents (programs) as examples. Here, codes such as broadcast contents A, A ′, and A ″ indicate broadcast stations of the same series, that is, stations that are broadcasting the same program at the same time. At present, various broadcasting stations, including satellite stations of the same series, are scattered in a complicated manner.In such a situation, you can enjoy TV and radio broadcasting while traveling by car, but the reception environment is Because of the more complicated changes due to movement, a tuning system that is easy for the user to operate is required.To receive television broadcasts and radio broadcasts, a mobile unit, especially a vehicle-mounted receiver, needs to select a receivable station to be selected. As a method of storing in a memory, a search is performed over all frequencies sequentially from a lower frequency (channel), that is, an automatic search is performed, and a method of storing all receivable stations, or a method of determining in advance. 5 shows an execution result of an auto search by a method of storing all receivable stations.
Shows the relationship between memory, channel, and broadcast content. In the case of this method, all the receivable stations searched regardless of the electric field strength are assigned to channels and sequentially stored in the memory. Also, FIG. 6 divides affiliated stations from receivable stations,
The result of the execution of the auto search of the method of storing only the representative station in the memory is shown. However, in order to determine the type of broadcast station, it is necessary to take in preset data from an external storage device or the like.

[0003]

The conventional mobile broadcast receiver employs the above-described channel memory system, and thus has the following problems. In the method of storing all receivable stations shown in FIG. 5, the same broadcast content (program) is used.
For example, when selecting the desired station E, it takes time and effort to call the desired station. In addition, as the number of memories increases, the stored contents become complicated for the user, making it difficult to grasp. Was. In addition, if stations having the same broadcast contents (programs) have a lot of overlapping storage, the number of memories corresponding to the number of tuning buttons is insufficient, and there is a problem that a station that is not stored is created.

On the other hand, in the system shown in FIG. 6 in which affiliated stations are divided and the representative stations are stored, the number of memories is simplified, but when the electric field strength decreases due to a moving situation, the same program is shifted to a station. But I couldn't do it right away, so I had to do an auto search each time and set the station memory again.
In addition, there is a possibility that the station with the best reception status is not stored between affiliated stations of the same broadcast content (program). In other words, stations with strong signal levels but interference are stored,
Stations with slightly weak signal levels but no interference were not stored.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and stores all the receivable stations without omission, and at the same time, when the reception state of the selected station is unstable, the reception state is good. It is an object of the present invention to provide a mobile broadcast receiving method and a mobile broadcast receiver which can easily call an affiliated station of the same program.

[0006]

In the mobile broadcast receiving method according to the present invention, at the time of an automatic search, the frequency of the broadcast received signal, electric field strength, multiplexed or stored in the first storage means in advance. Stations broadcasting different broadcast contents from the broadcast station data and the current location data obtained from the location information providing means are made to correspond to the respective tuning buttons, and the same broadcast with a different frequency from the stations broadcasting different broadcast contents If there is a station broadcasting the contents, the station data is sequentially grouped and arranged in the second storage means so as to correspond to each tuning button, and the station data is stored. At the time of tuning, a predetermined number is selected by selecting the tuning button. The station data stored in the first group of the group is called to control the tuner unit to select a station, and the selected tuning buttons are stored in the same group by continuous operation. It was to control the tuner unit calls the office data of the stations are broadcasting the same broadcast content is intended to select a channel.

A mobile broadcast receiver according to the present invention has first storage means for storing in advance position data indicating a plurality of areas and broadcast station data such as a list of receivable stations and a list of broadcast station names in each area. Position information providing means for extracting current position data indicating the current position; frequency of received signals, electric field strength, multiplexed broadcast station data and current position data to be detected during auto search; When the broadcast station data exists, the detection information of the reception information detection means is outputted as it is, and when the multiplexed broadcast station data does not exist, the detection information is compared with the broadcast station data of the first storage means to correspond to the reception station. Means for acquiring and outputting broadcast station data to be transmitted, a second storage means, and stations which receive output data of the collation means and broadcast different broadcast contents. If there is a station that broadcasts the same broadcast content with a different frequency from the station that broadcasts different broadcast content, it is grouped sequentially and the second memory is made to correspond to each channel selection button. The station data is sequentially arranged in the means, and the station data is stored. At the time of selecting a station, the station data arranged and stored at the beginning of a predetermined group is called by selecting a tuning button, and the tuner section is controlled to select the station. Control means for controlling the tuner section by calling station data of stations broadcasting the same broadcast contents arranged and stored in a group by continuous operation of a tuning button.

In the mobile broadcast receiver according to the present invention, when there is a station which broadcasts the same broadcast content sequentially arranged in the same group in the second storage means, the mobile broadcast receiver is arranged and stored in the order of the station having the highest electric field strength. Control means.

In the mobile broadcast receiver according to the present invention, the control means controls the second storage means to store a specific broadcast station group corresponding to a channel selection button at a specific position. .

The mobile broadcast receiver according to the present invention is characterized in that the position information providing means is a GPS receiver.

[0011] The mobile broadcast receiver according to the present invention is characterized in that the location information providing means is a device for extracting the location information of a PHS or a relay station of a portable telephone.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a block circuit diagram of a mobile broadcast receiver. Reference numeral 61 denotes a television antenna, and reference numeral 62 denotes a tuner section from which an intermediate frequency signal of a tuning reception signal is extracted. A detection unit 63 detects and extracts a video signal and an audio signal from the intermediate frequency signal. The video signal and the audio signal are output to the multiplexed data decoding unit 65 and from an output terminal 64 (not shown) to the respective amplifying units, displays, and speakers. Also, the detection unit 63
The C voltage is provided to the tuner data detection unit 66 as a signal indicating the electric field strength. If there is broadcast station data to be multiplexed with the received signal and sent, the multiplexed data decoding unit 65 gives this to the tuner data detection unit 66. Further, the tuner data detecting section 66 is supplied with a signal indicating the frequency or the receiving channel number from the tuner section 62, and further, with the GPS receiver 74 receiving positional information, that is, current position data indicating latitude and lightness.

As described above, the tuner data detecting section 66 detects information such as the frequency or channel number, the electric field intensity information, the presence / absence judgment result, and the position information of the currently receiving broadcast station. If the position information is multiplexed with the received signal, the decoded broadcast station data has that role, and if not, the position information is given from the GPS receiver 74 of the navigation device.

Reference numerals 67 and 68 denote first and second data collating units, and reference numerals 69 and 70 denote first and second storage devices. The first storage device 69 stores distribution data of broadcast stations in each region in advance, and targets broadcast station data such as a broadcast station name corresponding to a location and a frequency (channel number). On the other hand, the second storage device 70 stores the frequency (channel number) of the receiving broadcast station, the broadcast station (broadcast contents),
Although data such as electric field strength is stored, stations having different broadcast contents are stored in association with the tuning buttons 72, respectively. Furthermore, the stations and frequencies (channels) of these different broadcast contents are different, but the broadcast contents (programs) are different.
If there is the same station, the same affiliated stations are grouped and sequentially arranged in a predetermined relationship to store the station data. 71
Is a control unit, which is triggered by a tuning button 72 and receives from the second data collating unit 68 a signal indicating the presence / absence of the same affiliated station corresponding to the station being received, a field strength comparison result, a storage order designation, etc. Instructions such as write permission, group designation, new / existing, and storage order designation are given to the storage device 70. A tuner control unit 73 receives the channel selection channel information instructed from the control unit 71, and outputs PLL data for determining the reception frequency of the receivable station of the tuner unit 62.

Here, the first storage means of the present invention is the first storage device 69, the second storage means is the second storage device 70, the received information detection means is the tuner data detection section 66, and the position information provision means is the The GPS receiver 74 corresponds to the first data matching unit 67 as the matching unit, and the second data matching unit 68 and the control unit 71 correspond to the control unit. Further, as the position information detecting means, a device for extracting the position information of the PHS or the relay station of the mobile phone may be applied.

Next, the operation will be described. The operation of the circuit configuration of FIG. 1 will be described with reference to the flowchart of FIG. For example, when the power of the receiver is turned on, an auto search starts (step ST1), a channel is selected (step ST2), and it is determined whether there is a selected station (step ST3). The station operation is repeated, and if there is a station, a signal designating the selected channel is sequentially given to the tuner section 62 from the control section 71, converted into PLL data, and applied to the tuner section 62 (step ST).
4). As a result, the reception signals sequentially selected have an intermediate frequency extracted therefrom and demodulated by the detection unit 63 into a video signal and an audio signal. At this time, it is determined whether or not the broadcast station data being received is multiplexed with the video signal or the audio signal (Step S).
T5) If there is multiplexed data, broadcast station data is demodulated by the decoding function of the multiplexed data decoding unit 65 (step ST6). On the other hand, when there is no multiplexed data, the position acquisition information is obtained by the latitude and longitude given from the GPS receiver 74 of the navigation device (step S).
T7).

In the first data collating unit 67, the first data collating unit 67 uses the frequency or channel number of the receiving station and the position information to perform the first
The broadcast station data stored in the storage device 69 is collated (step ST8), the broadcast station data of the receiving station is obtained, and transmitted to the second data collation section 68 together with the detection information obtained by the tuner data detection section 66. Is done. However, if the broadcast station data is multiplexed with the received signal, the process is skipped because the broadcast station data included in the detection information is used as it is.

In the second data collating unit 68, the group already stored in the second storage device 70 is collated with the broadcast station data (step ST9), and the result is compared with the control unit 7
Send to 1. Here, if there is a group that matches the station currently being received, the control unit 71 sends the second storage device 7.
Writing to "0" is permitted, and the group to which the data is to be written is specified. If there is no group that matches the broadcast station data of the currently receiving station, or if the station is the first receivable station after starting the auto search, a new group is added to the second storage device 70.

At the time of writing to the second storage device 70, the control unit 71 can specify the order of registration in the group. Rules for the registration order include the order of the electric field strength, the order of the channel numbers (the order of the lower frequencies), and the like. For grouping, it is also possible to preferentially position a specific affiliated station such as NHK at the top of the group arrangement. Then, it is determined whether the auto research is completed (step ST10).
Returning to step 2, channel selection is performed.

An example of the arrangement state of the broadcasting stations preset by the automatic search as described above can be described with reference to FIG. Tuning button, memory No. The relationship among (group), channel and broadcast contents (displaying the master station of the same program) is shown. Eight tuning buttons are assigned to each group. Each group is assigned to a station having a different broadcast content (program). When there are a plurality of stations having different frequencies from the stations having different broadcast contents and having the same broadcast contents (programs), the channels (reception frequencies) are grouped and the station data is arranged and stored.
Within a group, for example, they are stored in the order of the youngest channel number. By storing broadcast stations two-dimensionally in this way, selecting stations with different broadcast contents is performed by appropriately selecting the channel selection button numbers 1 to 8, and selecting the same broadcast contents is performed by selecting the same button. Channels can be sequentially selected by continuously pressing the channel selection button or pressing the channel several times in sequence. These functions can be provided by the control unit 71.

As described above, according to the first embodiment, first, stations having different broadcast contents are allocated to correspond to the respective channel selection buttons, and the station data are arranged and stored. Since the station data is arranged and stored by grouping the stations, an effect is obtained that even if the number of tuning buttons is small, all the receivable stations in the area selected in the auto search can be stored so that the stations can be selected. Also, when it is desired to reselect a station having the same broadcast content due to a change in the reception state, the user can easily operate the station because the same channel selection button can be used. Further, when the stations in each group are arranged and stored in the order of the received signal level, that is, the electric field strength is large, there is an effect that a station having a good reception state can be selected at the time of channel selection. In addition, when a group of stations having frequently used broadcast contents is positioned in association with a channel selection button at an easily operable position, there is an effect that the usability is improved.

[0022]

As described above, according to the present invention, at the time of the automatic search, the frequency of the broadcast reception signal, the electric field strength, the broadcasting station data which is multiplexed or stored in the first storage means in advance, and The stations broadcasting different broadcast contents from the current location data obtained from the location information providing means are made to correspond to the respective tuning buttons, and the same broadcast contents are broadcasted at different frequencies from the stations broadcasting different broadcast contents. If there are stations, the station data are sequentially grouped and arranged in the second storage means in correspondence with the respective tuning buttons, and the station data is stored. At the time of tuning, the first of a predetermined group is selected by selecting the tuning button. The station data stored in the array is called to control the tuner unit to select a station, and the selected channel selection button is continuously operated to release the same broadcast content stored in the same group in the same group. The station data of the selected station is called and the tuner section is controlled to select a station, so that even if the number of tuning buttons is small, all receivable stations in the area selected for auto search can be selected. The effect that can be memorized is obtained. Further, when it is desired to reselect a station having the same broadcast content due to a change in the reception state, the user can easily operate the station because the station can be sequentially selected with the same tuning button.

According to the present invention, when there is a station which broadcasts the same broadcast content sequentially arranged in the same group in the second storage means, the control means for controlling the second storage means causes the station having a large electric field strength to be transmitted. Since the arrangement is made so as to be arranged and stored in order, there is an effect that the stations can be sequentially tuned from the station having the good reception state at the time of tuning.

According to the present invention, the control means stores the specific broadcast station group in the second storage means in correspondence with the channel selection button at the specific position.
A group of stations having frequently used broadcast contents can be positioned in association with a channel selection button located at a position that is easy to operate, which has an effect of improving usability.

According to the present invention, the position information providing means has G
Since the apparatus for extracting the position information of the PS receiver, the PHS or the relay station of the mobile phone is configured to be applied, there is an effect that the existing position information can be used.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram showing a mobile broadcast receiver according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart for explaining the operation of the first embodiment of the present invention.

FIG. 3 is a diagram for explaining an effect of the first embodiment of the present invention.

FIG. 4 is a diagram showing a broadcast station distribution example for explaining the background of the present invention.

FIG. 5 is a diagram illustrating a tuning preset state of a conventional mobile broadcast receiver.

FIG. 6 is a diagram illustrating a tuning preset state of a conventional mobile broadcast receiver.

[Explanation of symbols]

61 antenna, 62 tuner, 63 detector, 6
4 output terminal, 65 multiplexed data decoder, 66 tuner data detector, 67 first data collator, 68 second data collator, 69 first storage device, 70 second storage device, 71 control unit, 72 channel selection button , 73 Tuner control unit, 74 GPS receiver.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) H04N 5/44 H04B 7/26 EF term (Reference) 3D020 BA02 BA05 BB01 BC03 BD05 BE03 5C025 AA23 BA27 DA07 5J103 AA13 CB05 DA44 FA03 GA07 JA09 JA13 JA22 JA23 LA02 LA04 MA09 5K067 AA34 BB00 EE02 GG11 HH22 HH23 JJ52 JJ56 KK00

Claims (6)

[Claims] At the time of an automatic search, a frequency of a received signal of a broadcast, an electric field strength, multiplexed or pre-stored broadcast station data stored in a first storage means, and current location data obtained from a position information providing means. Stations broadcasting different broadcast contents are made to correspond to the respective channel selection buttons. If there is a station broadcasting a different broadcast content and broadcasting the same broadcast content at a different frequency, the stations are sequentially grouped. The station data is sequentially arranged in the second storage means so as to correspond to each of the tuning buttons, and the station data is stored. At the time of tuning, the station data arranged and stored first in a predetermined group is called by selecting the tuning button. The tuner section is controlled to select a station, and the selected tuning buttons are arranged in the same group by continuous operation and stored in the same group. A broadcast receiving method for a mobile object, comprising: controlling a tuner section to select a channel by calling the data. 2. A first storage means for storing in advance location data indicating a plurality of areas and broadcast station data such as a list of receivable stations and a list of broadcast station names in each area, and extracting current location data indicating a current location. Position information providing means, reception information frequency means for detecting the frequency of the received signal, electric field strength, multiplexed broadcast station data and the current location data at the time of the auto search, and this information is provided when the multiplexed broadcast station data is present. The detection information of the reception information detection means is output as it is, and when the multiplexed broadcast station data does not exist, the detection information is compared with the broadcast station data of the first storage means, and the broadcast station data corresponding to the reception station is determined. A matching unit that acquires and outputs the data, a second storage unit, and a station that receives the output data of the matching unit and broadcasts different broadcast contents. If there is a station that broadcasts the same broadcast content with a different frequency from the station that broadcasts the different broadcast content, group them sequentially and associate them with each of the tuning buttons. The second
The station data is sequentially arranged in the storage means, and the station data is stored.When the station is selected, the station data arranged and stored at the beginning of the predetermined group is called by controlling the tuner section, and the tuner is controlled to select the station. Control means for controlling the tuner unit by calling station data of stations broadcasting the same broadcast content arranged and stored in the group by continuous operation of the tuning button. Body broadcast receiver. 3. If there is a station which broadcasts the same broadcast contents sequentially arranged in the same group in the second storage means, the control means controls to arrange and store the stations in order of the electric field strength. The broadcast receiver for a mobile object according to claim 2, wherein 4. The mobile broadcast receiving apparatus according to claim 2, wherein the control means controls the second storage means to store a specific broadcast station group in correspondence with a specific tuning button. Machine. 5. The broadcast receiver according to claim 2, wherein the location information providing means is a GPS receiver. 6. The mobile broadcast receiver according to claim 2, wherein the position information providing means is a device for extracting position information of a PHS or a relay station of a mobile phone.