JPH0795696B2 - Mobile receiver - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile receiver such as an automobile radio receiver and a portable radio receiver that are used while moving.

2. Description of the Related Art Currently, there are many radio broadcasting stations in various places, and there are broadcasting stations that transmit different broadcast radio waves having the same frequency in different regions. Particularly in the United States, there are many broadcasting stations with the same frequency in adjacent areas. Therefore, when a radio receiver moving together with a car receives a radio broadcast, it may not be possible to know which broadcast station the broadcast station is, although different broadcasts having the same frequency can be received in different areas. For example, if the user moves to the B area while receiving the a broadcast of the frequency f _{1 in} the A area, a b broadcast different from the a broadcast of the same frequency f ₁ is received. There are things I can't figure out.

DISCLOSURE OF THE INVENTION The present invention provides a mobile receiver capable of easily recognizing a broadcasting station name of a broadcast received at a destination, as in the conventional example.

Means for Solving the Problems In order to achieve the above object, the present invention determines a receiving area by a storage means in which receiving frequency data for each area and its broadcasting station name data are stored, and a key operation for instructing a moving direction. A designated operation unit, a unit for reading the reception frequency data and its broadcasting station name data corresponding to the designated area designated by this operation unit from the storage unit, and a receivable broadcast frequency at the current position. The determining means compares the receiving frequency data determined to be receivable by the receivability determining means with the receiving frequency data of the designated area read from the storage means to search for a receiving broadcasting station name in the designated area. It is characterized by comprising means for presenting.

Function The present invention has the above-described configuration, and when the moving direction is designated, the receivable frequency data and the broadcasting station name data in the designated area are read from the storage circuit,
By comparing this data with the currently received reception frequency data, the reception broadcasting station name in the destination area can be presented.

Embodiments Embodiments of the present invention will be described below with reference to FIGS. The present embodiment is an example of a vehicle-mounted radio receiver. In FIG. 1, 1 is an antenna, 2 is an electronic tuner including 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. Reference numeral 6 denotes an operation unit provided with various keys such as a preset key, a sweep key, and an area determination key. The area change key of the operation unit 6 is, as shown in FIG. It consists of a north key, an "S" (south) key, an "E" (east) key, and a "W" (west) key. 7
Is a control circuit that controls circuits such as a PLL circuit, a storage circuit, and a receivability determination circuit according to the operation of the operation unit 6, and 8 is a predetermined reception frequency set in the electronic tuner 2 according to a control signal from the control circuit 7. When the preset key of the operation unit 6 is operated, the PLL circuit 8 sets the reception frequency selected by the preset key in the electronic tuner 2 and when the sweep key is operated. The reception frequency set in the electronic tuner 2 is sequentially changed. Reference numeral 9 denotes a receivability determination circuit. The receivability determination circuit 9 determines whether the AGC output level of the electronic tuner 2 is a predetermined value or more and also determines whether the IF output matches the predetermined value. Then, the determination result is output to the control circuit 7. PLL
In the case where the circuit 8 judges that the receivability judgment circuit 9 sets the reception frequency f ₁ for example, it is judged that the AGC output level is equal to or higher than the predetermined level and the IF output matches the predetermined value, This means that the broadcasting station with the reception frequency f ₁ can be received at the current position. Reference numeral 10 denotes a memory circuit. In the memory circuit 10, frequency data of broadcast stations and broadcast station name data that can be received in each area are stored in advance. Reference numeral 11 is a display unit for displaying a reception frequency, a broadcasting station name, a region name (A, B, C ... X) and the like. Note that reference numeral 12 is a user memory for storing the area name, the broadcasting station name, and the reception frequency input by the user himself when a new broadcasting station is opened in the future. The data stored in the storage circuit 10 and the data stored in the user memory 12 are used.

Fig. 3 shows an example of regional allocation for a state in the United States.
The frequencies of the receivable broadcasting stations in the A region, B region, C region ... X region are as follows, for example,
It is assumed that the same frequency f ₁ can be received in the region, region C, and region X, but the broadcasting stations are all different.

The storage circuit 10 stores the reception frequencies that can be received in each of the regions and the broadcast name data.

The present embodiment compares the reception frequency determined to be receivable by the receivability determination circuit 9 at the current position with the receivable frequency data of each area stored in the storage circuit 10 to determine the current position at the current position. Reading the name of the broadcasting station being received from the memory circuit 10, displaying the name of the broadcasting station on the display unit 11, and displaying the area name (A, B, C, D, ... X) of the current position. Is.

Next, the operation of this embodiment will be described. Now, suppose that the automobile in which the radio receiver shown in FIG. 1 is installed is traveling in the X region in FIG. 3 and is receiving the broadcast of the a broadcasting station of the frequency f _{1 on} the display unit 11. The area name X is displayed, and the reception frequency f ₁ and the broadcasting station name a are also displayed. Here it travels toward the X region north enters the area B, and which receives the other broadcast frequency f _1, the frequency f ₁
I don't know the name of the broadcasting station. Here, when the area change key "N" (north) of the operation unit 6 shown in FIG. 2 is pressed, the data of the area B from the storage circuit 1, that is, the frequency data and the name of the broadcasting station which can be received in the area B are received. The data is read and set in the control circuit 7. The receivability determination circuit 9 determines whether or not the AGC output of the frequency f ₁ that is currently being received is equal to or higher than a predetermined value, and also determines whether the IF output matches the predetermined value. Since the broadcast of the frequency f ₁ is receivable, both determinations in the receivability determination circuit 9 are “Yes”, and the determination result is output to the control circuit 7. In the control circuit 7, the receivable frequency data of the area B read from the storage circuit 10 and the frequency of the broadcast currently being received are received.
By comparing the f _1, it searches the broadcast station name b of frequency f ₁ in the region B, sends the broadcast station name data b to the display unit 11 displays the broadcast station name b on the display unit 11.

FIG. 4 shows the operation of changing the broadcasting station name.
At 20, the area change keys operated by the operation unit 6 are “N” (north), “S” (south), “E” (east), and “W”.
It is determined whether or not it is (west), and in accordance with the determination result, the data of the corresponding area is read from the memory circuit 10 in steps 21, 22, 23, and 24, and is set in the control circuit 7.
Change the area name display and the receiving broadcasting station name display in 11.

As described above, in the present embodiment, by operating the key in the moving direction, the broadcasting station name received at the moving destination can be displayed. Instead of displaying the receiving broadcast station name on the display unit, the receiving broadcast station name may be generated by a synthesized voice.

When the northeast direction is designated by the area change key shown in FIG. 2, the area change key "N" and then the area change key "E" may be pressed.

EFFECTS OF THE INVENTION The present invention is configured as described above, and has an advantage that the receiving station name of the moving destination can be presented to the user by designating the moving direction.

[Brief description of drawings]

FIG. 1 is a block diagram of a mobile receiver in one embodiment of the present invention, FIG. 2 is a diagram showing a region change key of the receiver, and FIG.
FIG. 4 is a diagram showing regional allocation, and FIG. 4 is a diagram showing an operation flow of the receiver. 1 ... Antenna, 2 ... Electronic tuner, 3 ... Demodulation circuit, 4 ... Low-frequency amplification circuit, 5 ... Speaker, 6 ... Operation part, 7 ... Control circuit, 8 ... PLL circuit, 9 ... … Receivability judgment circuit, 10 …… Memory circuit, 11 …… Display unit, 12 …… User memory.

Claims (1)

[Claims] 1. A storage means for storing reception frequency data for each area and its broadcasting station name data, an operation section for specifying a reception area by a key operation for instructing a moving direction, and an operation section for specifying the reception area. A means for reading the reception frequency data corresponding to the designated area and its broadcasting station name data from the storage means, a receivability determining means for determining the receivable broadcast frequency at the current position, and a receivability determining means for receiving the data. A mobile receiver comprising means for comparing the determined reception frequency data with the reception frequency data of the designated area read from the storage means to search for and present a reception broadcasting station name in the designated area. .