JPH1093394A - Broadcast receiver - Google Patents

Abstract

(57) [Summary] [Problem] To be able to confirm the current area based on carrier frequencies from a plurality of broadcast stations that can be received in the current area, and to confirm the name of a broadcasting station suitable for the area. ,
Also, it is possible to automatically select a broadcasting station suitable for the current area. SOLUTION: A CPU 1 detects carrier frequencies from a plurality of broadcast stations which can be normally received in a current area by an FM broadcast receiver 8 while switching the reception frequency stepwise. Based on the plurality of frequencies, the local broadcasting station data memory 2-2 is searched to specify the current area, and to display the broadcasting station name together with the area name suitable for the current area,
Automatically selects the broadcast station that matches the area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving apparatus for receiving an FM broadcast or the like.

[0002]

2. Description of the Related Art In a conventional FM broadcast receiver, the name of a broadcasting station is preset in a memory in advance in association with a unique carrier frequency transmitted from each broadcasting station. There is known an arrangement in which the displayed frequencies and broadcast station names of a plurality of stations are respectively displayed.

[0003]

However, in this type, it is not possible to know the current area, and if the area is different, the broadcasting station is different. Unless the frequency and the frequency are checked and preset again, it is impossible to perform automatic channel selection, display of a broadcast station name, or the like. Note that in order to know the current area, it is necessary to mount a car navigation system, which is a vehicle-mounted GPS, on a car, but this is expensive. An object of the present invention is to enable the current area to be confirmed based on carrier frequencies from a plurality of broadcast stations that can be received in the current area, and to output a broadcast station name suitable for the area, The goal is to automatically select a broadcasting station that matches the current area.

[0004]

The means of the first invention (the invention described in claim 1) is as follows. (1) The receiving means receives a broadcast wave from a broadcast station. (2) The region-specific data storage means stores a region name for each region and carrier frequencies from a plurality of broadcasting stations broadcast for each region. (3) The detecting means detects carrier frequencies from a plurality of broadcast stations which can be normally received in the current area by the receiving means while switching the receiving frequency stepwise. (4) The reading means searches the area-specific data storage means based on the carrier frequencies from the plurality of broadcast stations detected by the detecting means, and reads the area name corresponding to the combination of the plurality of carrier frequencies. (5) The output means outputs the area name read by the reading means. Now, when carrier frequencies from a plurality of broadcast stations that can be normally received in the current area are respectively detected by the detection means,
The region name corresponding to the combination of the plurality of carrier frequencies is read from the region-specific data storage unit and output by the reading unit. Therefore, it is possible to confirm the specified current area based on carrier frequencies from a plurality of broadcast stations that can be received in the current area.

[0005] The means of the second invention (the invention of claim 2) is as follows. (1) The receiving means receives a broadcast wave from a broadcast station. (2) The region-specific data storage means stores the region name for each region, the carrier frequency from a plurality of broadcast stations broadcasted for each region, and the broadcast station name in association with each other. (3) The detecting means detects carrier frequencies from a plurality of broadcast stations which can be normally received in the current area by the receiving means while switching the receiving frequency stepwise. (4) The reading means searches the area-specific data storage means based on the carrier frequencies from the plurality of broadcast stations detected by the detecting means, reads out the area name corresponding to the combination of the plurality of carrier frequencies, The name of the currently selected broadcast station is read out of the broadcast station names corresponding to the area name. (5) The output means outputs the broadcast station name together with the area name read by the read means. Now, when carrier frequencies from a plurality of broadcast stations that can be normally received in the current area are respectively detected by the detection means,
The reading means searches the regional data storage means based on the combination of the plurality of carrier frequencies. Here, since the area name, the carrier frequency from a plurality of broadcasting stations broadcast for each area and the broadcasting station name are stored in the area-specific data storage means for each area, the reading means detects the area by the detecting means. The area name corresponding to the combination of the plurality of carrier frequencies and the name of the currently selected broadcasting station are read out of the broadcasting station names corresponding to the area name. The broadcast station name together with the read-out area name is output from a display screen or the like. Therefore, it is possible to specify the current area based on the carrier frequencies from a plurality of broadcast stations that can be received in the current area, and to output the name of the area and the name of the broadcast station suitable for the area.

The means of the third invention (the invention according to claim 3) is as follows. (1) The receiving means receives a broadcast wave from a broadcast station. (2) The detecting means detects carrier frequencies from a plurality of broadcasting stations that can be normally received in the current area by the receiving means while switching the receiving frequency stepwise. (3) The automatic channel selecting means selects any one of the carrier frequencies from the plurality of broadcast stations detected by the detecting means. Now, when carrier frequencies from a plurality of broadcast stations that can be normally received in the current area are respectively detected by the detection means,
The automatic tuning means selects one of the plurality of carrier frequencies. Therefore, it is possible to specify the current area based on the carrier frequencies from a plurality of broadcast stations that can be received in the current area, and to automatically select a broadcasting station suitable for this area.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing an on-vehicle FM broadcast receiving apparatus. CPU1 is R
This is a central processing for controlling the overall operation of the FM broadcast receiving apparatus according to a program in AM2. The storage medium 3 includes a magnetic / optical storage medium such as a floppy disk, an optical disk, and a RAM card, which can be removably mounted, and a semiconductor memory, and stores programs and data. In a state where the storage medium 3 is mounted, programs and data in the storage medium 3 are taken into the CPU 1 via the storage medium control unit 4 and stored in the storage device 5. The storage device 5 includes a ROM, a hard disk, an optical disk, and stores an operating system, various application programs, data files, character font data, and the like.
When a program or data is transmitted from another device via a communication line or the like, the program or data is fetched and stored in the storage device 5.
To be stored. The input unit 6, the display unit 7, and the FM broadcast receiver 8 are connected to the CPU 1 as input / output peripheral devices.

The input unit 6 is an input device provided with an automatic tuning key AS and the like, and the display unit 7 is a liquid crystal display device and the like. The FM broadcast receiver 8 is a radio receiver that receives an FM broadcast. Here, the CPU 1 shifts the reception frequency in increments of 0.1 MKHz while checking the reception state within the frequency band in the whole area where the FM broadcast is being performed, so that a plurality of broadcasts that can be normally received in the current area are performed. Each of the carrier frequencies from the station is detected, and a combination of the detected frequencies is used as a reception pattern of the current area.
It is stored in the reception pattern memory 2-1 in AM2.

The RAM 2 includes a reception pattern memory 2-1, a local broadcasting station data memory 2-2, and a local name data memory 2-
3. With a configuration having a work memory 2-4 and the like, the reception pattern memory 2-1 is a work memory for temporarily storing frequencies corresponding to a plurality of broadcasting stations that have been able to receive signals normally in the current area as described above. is there. The regional broadcast station data memory 2-2 stores carrier frequencies and broadcast station names from a plurality of broadcast stations being broadcast for each region. FIG. 2 shows the storage contents of the regional broadcast station data memory 2-2. ing. That is, the carrier frequencies (80.0 MHz, 82.0 M
Hz ...) and its broadcasting station name (FM00, FMxx ...)
Area A is broadcast pattern A, area B is broadcast pattern B, area C is broadcast pattern C
…… is defined as Here, F1, F2, F3 in each of the broadcast patterns A, B, C... Indicate a pattern match flag, and the CPU 1 determines the contents of the reception pattern memory 2-1 and the contents of the local broadcast station data memory 2-2. As a result of the comparison, when a pattern match is detected, the pattern match flag is turned on in association with the broadcast pattern. The area name data memory 2-3 stores the area name in association with the broadcast patterns A, B, C,... For each area. FIG. 3 shows the storage contents of the area name data memory 2-3. FIG. 4 is a diagram showing a manner in which the broadcast pattern differs for each region.

Next, the operation of the broadcast receiving apparatus will be described with reference to the flowcharts shown in FIGS. In addition,
Programs for realizing the functions described in these flowcharts are stored in the storage medium 3 or the storage device 5 in the form of program codes readable by the CPU 1, and the contents thereof are stored in the program memory ( (Not shown). FIG. 5 is a flowchart which is started when the power is turned on. First, immediately after the power is turned on (step A1), the execution of the area indexing process is started (step A2).

FIG. 6 is a flow chart showing the area indexing process. First, initialization processing for clearing the pattern matching flags F1, F2, F3... Corresponding to the respective broadcast patterns A, B, C... In the local broadcasting station data memory 2-2 and clearing the work memory 2-4. Is performed (step B1). Next, within the range of all frequency bands (76.0 MHz to 108.0 MHz) of FM broadcast, the minimum reception frequency (76.0 MH)
z) is set in the work memory 2-4 (step B2), and it is checked whether the radio broadcast of this reception frequency can be normally received (step B3). Set to 2-1 (step B4). Then, the work memory 2-4
(Step B5), and if it does not reach the maximum value, 0.1 MHz is added to the reception frequency in the work memory 2-4 (step B5). Step B6). Then, returning to step B3, similarly, it is checked whether normal reception is possible while adding 0.1 MHz to the reception frequency until the maximum reception frequency is reached. If reception is possible, the reception frequency at that time is received. It is sequentially set in the pattern memory 2-1.

When the reception pattern in the current area is obtained in this manner, the CPU 1 compares the contents of the reception pattern memory 2-1 with the broadcast pattern of the area A stored in the local broadcast station data memory 2-2. Compare (Step B
7). That is, a plurality of frequencies that can be normally received in the current area are set as reception patterns in the reception pattern memory 2-1, and each reception frequency that forms this reception pattern and each frequency that forms the broadcast pattern A The frequency and the frequency are compared, and if both match completely (step B
8) In order to specify the area corresponding to the broadcast pattern compared this time as the current area, the pattern matching flag in the local broadcast station data memory 2-2 corresponding to the broadcast pattern is turned on (step B9). In this case, the pattern match flag F1 corresponding to the broadcast pattern A is turned on. As a result, when the broadcast pattern corresponding to the current area is selected, the head is automatically selected from among the broadcast stations constituting the broadcast pattern (step B1).
0), the name of the selected broadcasting station is stored in the local broadcasting station data memory 2
-2, and a guide is displayed on the display screen (step B11). The area name data memory 2-3 is searched based on the selected current area broadcast pattern,
The area name corresponding to the broadcast pattern is read out and displayed (step B12).

On the other hand, as a result of comparing the reception pattern and the broadcast pattern A, if a mismatch is detected between them, the process proceeds to step B13 to check whether the two patterns are similar. In this case, if only a part of the frequency is different and all other frequencies are the same frequency, they are recognized as similar patterns, and the area corresponding to the broadcast pattern compared this time is set in the work memory 2-4 (step B14). ). And
It is checked whether an uncompared broadcast pattern exists in the local broadcast station data memory 2-2 (step B15).
Since this is the case where broadcast pattern A is the comparison target,
Next, the broadcast pattern B is designated as a comparison target, and the received pattern and the broadcast pattern B are compared (step B1).
6) As a result, if they match (step B)
8) The above-described processing (steps B9 to B12) is executed, the pattern matching flag corresponding to the broadcast pattern B is turned on, or the first station of this broadcast pattern is automatically selected. Is displayed and output. If the reception pattern and the broadcast pattern B are similar, the area corresponding to the broadcast pattern B is set in the work memory 2-4. (Step B14).

Next, a pattern C is designated as an uncompared broadcast pattern, and the broadcast pattern C is compared with the received pattern (steps B15 and B16). The operation proceeds to the execution of step B14, and if they are similar, the operation proceeds to the execution of step B14. Even if all the broadcast patterns in the local broadcast station data memory 2-2 are sequentially specified one by one and compared with the reception pattern in this way, if a mismatch is detected, it is determined in step B15 that there is no broadcast pattern. Since the broadcast pattern is detected, the process proceeds to step B17 to check whether a broadcast pattern similar to the received pattern exists by referring to the contents of the work memory 2-4. here,
If a similar pattern exists, its number is 1
If so, the pattern matching flag corresponding to this broadcast pattern is turned on in order to identify the area of the pattern as the current area, but if there are a plurality of similar patterns, the broadcast pattern closest to the reception pattern is turned on. A pattern is selected, and a pattern matching flag corresponding to the broadcast pattern is turned on (step B18). Then, the process proceeds to steps B10 to B12, where the name of the broadcast station and the name of the area are displayed together with the automatic channel selection. On the other hand, if there is no similar pattern, a display indicating that the current area cannot be specified is performed (step B19).

When the area indexing process is performed immediately after the power is turned on, the process returns to step A1 in FIG. here,
Since it is detected that the power is not immediately turned on, step A
Then, the process proceeds to step A2 (area identification processing). If the reception sensitivity is not good, the process proceeds to step A2 (area identification processing). It is checked whether the selected auto tuning key AS has been operated (step A4). Here, auto tuning key A
If S is not operated, the process returns to step A1, but if the auto tuning key AS is operated, a broadcast pattern for which the pattern match flag is turned on is designated in the local broadcast station data memory 2-2, The next station currently selected is automatically selected (step A5), and the name of the selected broadcasting station is read out and displayed (step A6).
Then, the process returns to step A1.

As described above, in this broadcast receiving apparatus, while confirming the reception state within the frequency band in all the areas where FM broadcasting is performed, the frequency of 0.1 MHz is checked.
The reception frequency is shifted in increments of, and each of the frequencies from a plurality of broadcast stations that can be normally received in the current area is detected, and a combination of the detected frequencies is recognized as a reception pattern in the current area. The current area is specified by comparing the reception pattern with the broadcast pattern for each area stored in the area broadcast station data memory 2-2. Therefore, the current area is specified together with the specified area name. The broadcast station name can be displayed in association with the broadcast station name, and a broadcast station suitable for the current area can be automatically selected. In this case, the local broadcast station data memory 2-2 stores the frequencies and broadcast station names from a plurality of broadcast stations broadcast for each region as broadcast patterns for each region, and also stores the regional name data memory 2-3.
Stores the name of the area corresponding to the broadcast pattern. Therefore, based on the broadcast pattern specified as the current area, the broadcast station name and the area name can be read out and displayed.

In the above-described embodiment, the area broadcast station data memory 2-2 and the area name data memory 2-
3 is a different memory, but may be the same memory. Further, the area name and the broadcast station name are displayed and output, but the area name and the broadcast name may be output as audio.
Further, in the above-described embodiment, FM radio broadcasts are received, but television UHF broadcasts may be received.

[0018]

According to the present invention, the current area can be specified based on carrier frequencies from a plurality of broadcast stations that can be received in the current area, so that the current area can be confirmed or the current area can be identified. It is possible to confirm the name of the broadcasting station that matches the broadcasting station, and to automatically select the broadcasting station that matches the current area.

[Brief description of the drawings]

FIG. 1 is a block diagram of a broadcast receiving apparatus.

FIG. 2 is a diagram showing storage contents of a local broadcasting station data memory 2-2.

FIG. 3 is a diagram showing storage contents of a region name data memory 2-3.

FIG. 4 is a diagram showing a state where broadcast patterns are different for each region.

FIG. 5 is a flowchart that is started when power is turned on.

FIG. 6 is a flowchart showing step A2 (region indexing process) of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 RAM 2-1 Reception pattern memory 2-2 Regional broadcasting station data memory 2-3 Regional name data memory 3 Storage medium 4 Storage medium control unit 5 Storage device 6 Input unit, 7 Display unit 8 FM broadcast receiver

Claims (3)

[Claims] 1. Receiving means for receiving a broadcast wave from a broadcasting station, region-specific data storing means for storing a region name for each region, and carrier frequencies from a plurality of broadcasting stations being broadcast for each region, Detecting means for detecting carrier frequencies from a plurality of broadcasting stations which can be normally received in the current area by the receiving means while switching the frequency stepwise; and carrier frequencies from the plurality of broadcasting stations detected by the detecting means. Reading means for retrieving the area-specific data storage means on the basis of the above, and reading the area name corresponding to a combination of a plurality of carrier frequencies; and output means for outputting the area name read by the reading means. A broadcast receiving apparatus characterized by the above-mentioned. 2. A receiving means for receiving a broadcast wave from a broadcasting station, a region name for each region, a carrier frequency from a plurality of broadcasting stations broadcasted for each region and a broadcasting station name are stored in association with each other. Area-specific data storage means, detection means for detecting carrier frequencies from a plurality of broadcast stations that can be normally received in the current area by the reception means while switching the reception frequency in a stepwise manner, Searching the regional data storage means based on the carrier frequencies from the plurality of broadcast stations, and reading out the area name corresponding to the combination of the plurality of carrier frequencies, among the broadcast station names corresponding to the area names, A reading means for reading the name of the currently selected broadcasting station, and an output means for outputting the name of the broadcasting station together with the area name read by the reading means. And a broadcast receiving apparatus. 3. A receiving means for receiving a broadcast wave from a broadcasting station, and a carrier frequency from a plurality of broadcasting stations which can be normally received in the current area by the receiving means while switching the receiving frequency stepwise. A broadcast receiving apparatus comprising: a detecting unit; and an automatic tuning unit that selects any one of carrier frequencies from a plurality of broadcast stations detected by the detecting unit.