JPH02238724A - Mobile receiver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mobile receiver used while moving, such as an automobile radio receiver, a portable radio receiver, and the like.

BACKGROUND OF THE INVENTION Currently, there are many radio broadcasting stations in various places, and there are broadcasting stations that transmit different broadcast waves of the same frequency in different areas. Particularly in the United States, there are many different broadcasting stations with the same frequency in adjacent areas. For this reason, when receiving radio broadcasts with a radio receiver that moves with a car, although it is possible to receive different broadcasts on the same frequency in different areas, it may not be possible to determine which broadcast station the broadcast station is. For example, currently in area A the frequency ft
If you move to area B while receiving broadcast a, you will receive broadcast b, which is different from broadcast a, on the same frequency f1.
The name of the broadcasting station for this b broadcast may not be known.

Problems to be Solved The present invention provides a mobile receiver that can easily identify the broadcasting station of the broadcast received at the destination, as in the conventional example described above.

Means for Solving the Problems In order to achieve the above object, the present invention includes a storage means in which received frequency data for each region and its broadcast station name data are stored, and determines the receivable broadcast frequencies at the current location. a receivability determination means; a reception area determination means for determining the area of the current location by comparing the reception frequency data determined to be receivable by the receivability determination means with the reception frequency data stored in the storage means; It is characterized by comprising means for presenting a broadcasting station name based on broadcasting station name data corresponding to reception frequency data of the area determined by the reception area determination means among the area data stored in the storage means. That is.

Operation The present invention has the above-mentioned configuration, and the reception area determination means compares the reception frequency at the current position determined to be receivable by the reception possibility determination means and the reception frequency data stored in the storage means. Accordingly, it is possible to determine which region the current location is in, and the name of the broadcasting station is read out from the received frequency data of the determined region and displayed on the display section.

EXAMPLES Examples of the present invention will be described below with reference to FIGS. 1 to 3. This embodiment is an example of an in-vehicle radio receiver. In the 11th ffl, 1 is an antenna, 2 is an electronic tuner consisting of a high frequency amplification circuit, a mixing circuit, a local oscillation circuit, an intermediate frequency amplification circuit, etc., 3 is a demodulation circuit, 4 is a low frequency amplification circuit, and 5 is a speaker. 6 is an operation section provided with various keys such as a brisset key, a sweep key, a region determination key, etc.; 7 is a PLL circuit, a memory circuit,
A control circuit that controls circuits such as a receivability determination circuit and a reception area determination circuit; 8 is a PL for setting a predetermined reception frequency in the electronic tuner 2 according to a control signal from the control circuit 7;
The PLL circuit 8 sets the reception frequency selected by the reset key to the electronic tuner 2 when the reset key of the operation unit 6 is operated, and when the sweep key is operated. 69 is a receivable determination circuit that sequentially changes the receiving frequency set in the electronic tuner 2;
This receivable determination circuit 9 determines whether or not the AGC output level of the electronic tuner 2 is equal to or higher than a predetermined value.
It is determined whether the output matches a predetermined value or not, and the determination result is output to the control circuit 7. When, for example, the reception frequency f1 is set in the electronic tuner 2 by the PLL circuit 8, the receivability determination circuit 9 determines that the AGC output level is equal to or higher than the predetermined level and the IF output matches the predetermined value. means that the broadcasting station of reception frequency f1 can be received. Reference numeral 10 denotes a storage circuit, and in this storage circuit 10, frequencies and broadcasting station name data of receivable broadcasting stations are stored in advance for each region. Reference numeral 11 denotes a reception area determination circuit 12 which compares the reception frequency determined to be receivable by the reception possibility determination circuit 9 with the reception frequency data stored in the storage circuit 10 and determines in which region the current position is located. is the reception frequency, area name (A.B.C...
...X>, etc. is a display section.

In addition, 13 is a user memory for storing the area name, receiving frequency, broadcasting station name, etc. input by the user himself when a new broadcasting station is opened in the future. , the data stored in the storage circuit 101:1m and the data stored in the user memory 13 are used.

Figure 3 shows an example of the regional distribution of a certain state in the United States.
Area A, Area B, Area C... The frequencies of broadcast stations that can be received in Area X are as follows, for example.
It is assumed that broadcasting of the same frequency f1 can be received in the region, E region, and X region, but the broadcast stations are all different.

The storage circuit 10 stores reception frequencies receivable in each region and their broadcasting station name data.

In this embodiment, the current position is determined by comparing the receiving frequency determined to be receivable by the receivable determination circuit 9 at the current position with the receivable frequency data for each region stored in the storage circuit 10. Determine which region it is,
The display unit 12 displays the reception frequency, as well as the area name (A, B, CD, . . . , X) of the current location and the name of the broadcasting station.

Next, the operation of this embodiment will be explained with reference to FIG. Now, a car equipped with the radio receiver shown in Fig. 1 moves from area X in Fig. 3 to another area, and uses the frequency f.
Assume that you are receiving broadcast number 1, but you do not know the name of the broadcasting station. Here, when the region determination key of the operation unit 6 is operated, the region determination mode is entered. In this region determination mode, first, as shown in FIG. 2, the reception frequency set in the electronic tuner 2 by the PLL circuit 8 is sequentially increased (up) by a predetermined frequency from the lowest reception frequency (
Step 20). The receivability determination circuit 9 determines whether the AGC output at each receiving frequency set in the electronic tuner 2 is greater than or equal to a predetermined value in step 21>, and in step 22) whether the IF output matches the predetermined value. The determination result is output to the control circuit 7. By changing the receiving frequency set in the electronic tuner 2 from the lowest receiving frequency to the highest receiving frequency, the receivable frequency determining circuit 9 determines the receivable frequency at the current position, and the result is stored in the control circuit 7. (Step 23). When it is determined in step 24 that the set reception frequency has been changed to the highest frequency, in step 25 the reception frequency data for each area stored in the storage circuit 10 is read out and transferred to the reception area determination circuit 11, Further, in step 26, the receivable frequency data at the current position stored in the control circuit 7 is determined by the reception area determination circuit 1.
Transferred to 1. The reception area determination circuit 11 includes a memory circuit 1
By comparing the receivable frequency data of each region read from 0 with the receivable frequency data at the current location transferred from the control circuit 7, it is determined which region (A.B.C.D.) the current location is. ) (step 27). This area determination is performed, for example, by determining the area where the receivable frequency at the current location matches the receivable frequency of each area read from the storage circuit 10 with the greatest number of matches (step 27). For example, when the above region determination operation is performed after moving from area The number of matches with the stored receivable frequencies of each region shown in the table is the largest in region B, and it is determined that the current location is in region B. When the current area is determined to be area B in step 27, in step 28,
The receiving area information is changed, and the broadcasting station name displayed on the display unit 12 is displayed based on the broadcasting station name data of area B stored in the storage circuit 10 (step 29).

On the other hand, if it is determined in step 27 that there is no matching area, the receivable frequency data of the X area stored in the storage circuit 10 in step 30 and the receivable frequency data stored in the control circuit 7 in step 23 The data are compared, and it is determined in step 31 whether or not they match. If the determination result in step 31 is a match, it means that although you have moved from area X, you are still within area Name data etc. will continue to be used.

If it is determined in step 31 that they do not match, the current position is A, B, C, D, E, F, etc. G.H. Therefore, in step 33, a request is made to set another area (outside the area shown in FIG. 3), and the area determination mode is ended.

In this way, according to this embodiment, even if there are different broadcast stations with the same reception frequency f1 in adjacent areas, the current area is automatically determined by operating the area determination key. Based on the broadcasting station data of the determined area, the name of the broadcasting station of the receiving frequency f1 is displayed on the display unit 12, and by looking at this display, the name of the broadcasting station currently being received can be grasped. Note that in the above embodiment, the name of the receiving broadcasting station in the determined area is displayed on the display unit 12;
The name of the receiving broadcasting station may be announced using a synthesized voice.

Effects of the Invention The present invention has the above configuration, and according to the present invention,
Even if there are broadcast stations on the same frequency, the present invention has the advantage of automatically determining the area name of the current location and presenting the name of the broadcast station of the broadcast currently being received.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a mobile receiver according to an embodiment of the present invention, FIG. 2 is a diagram showing the operation flow of the receiver, and FIG. 3 is a diagram showing regional distribution. DESCRIPTION OF SYMBOLS 1...Nantenna, 2...Electronic tuner, 3...Demodulation circuit, 4...Low frequency amplifier circuit, 5...Subika,
6. - Operation unit, 7... Control circuit, 8... PLL circuit, 9... Receivable determination circuit, 10... Memory circuit,
11... Reception area determination circuit, 12... Display section, 13
...User memory.

Claims (1)

[Claims] a storage means storing reception frequency data and broadcasting station name data for each region; a receivability determination means for determining a receivable broadcasting frequency at the current location; Reception area determination means for determining the area of the current location by comparing reception frequency data with reception frequency data stored in the storage means; and reception area determination means for determining the area of the current location among the area data stored in the storage means. A mobile receiver comprising means for presenting a broadcasting station name based on broadcasting station name data corresponding to reception frequency data of the area determined by.