JP2573040Y2 - Car radio receiver - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle radio receiver, and more particularly, to a reception frequency data memory which can be received in each of divided areas, and stores data such as a broadcasting station name corresponding to the reception frequency data. The present invention relates to an in-vehicle radio receiver including a stored broadcast station data memory and a time display device.

[0002]

2. Description of the Related Art Conventionally, in the field of on-vehicle radio receivers, the whole country is divided into a plurality of blocks, and a receivable reception frequency data memory and a corresponding reception frequency data are provided for each regional block. Broadcast station data that stores data such as the name of a broadcast station is stored in advance in a memory in a radio receiver, and a reception signal of a desired broadcast station is obtained by using the stored content of the memory when selecting a station. In-vehicle radio receivers are known. This kind of on-vehicle radio receiver is known in foreign countries as a so-called ID logic type data-equipped radio receiver.

[0003] In a country whose land is vast, such as the United States, a large number of broadcast stations are arranged in the land, and among these broadcast stations, only broadcast contents of a specific broadcast genre are broadcast all day. Some are doing. Here, the specific genre refers to a music program, a news program, and the like.
Some stations specialize in broadcasting country and rock.

[0004] In-vehicle radio receivers used in a region having such a region block usually include various data related to a broadcasting station in each region, for example, a broadcasting station name,
The above-described ID logic type data in which the broadcast frequency, the content of the broadcast program, and the like are stored are mounted, and among the various selection keys provided in the on-vehicle radio receiver, a program of a specific genre is broadcast. A selection key for each genre for directly selecting a station is also provided, and a configuration is adopted in which one of a large number of broadcasting stations can be selected with a minimum number of operations.

On the other hand, the above-mentioned ID logic type data specifies a regional block, and its unit is a state (state) and a city (city). Is displayed on the display device of the in-vehicle radio receiver, the audible broadcast station in that state / city can be received, and the station broadcasting a program of a specific genre is automatically selected. Have the ability to

[0006]

The above-described radio receiver equipped with the ID logic type data generally has a timekeeping function, and a display surface of a display device for displaying a reception frequency and the like is provided on the display surface. The current time is displayed together with the display, or the current time is displayed by a switching operation. However, in a country such as the United States where the land is vast, there is a problem that a time difference exists in each region within the land. In other words, the current time displayed by the clock is not the local time even if the car is currently running and the state and city in which the car is running are displayed on the display device of the on-vehicle radio receiver, and the broadcasting station is automatically selected. Therefore, there is a discrepancy between the announcement of the received broadcast and the like, which is inconvenient. The present invention solves this problem, and displays the state and city where the car is running on the display device of the radio receiver,
It is intended to automatically switch the time display to that of the local area.

[0007]

According to the present invention, a display means capable of displaying a reception frequency and a current time, and reception frequency data for storing receivable frequency data for each pre-divided region are provided. A memory, a time difference data memory for storing time difference data for each of the divided areas, a selecting means capable of selecting any of the divided areas, and when a new divided area is selected by the selecting means, The frequency data and the time difference data corresponding to the new divided area are read from the reception frequency data memory and the time difference data memory, the frequency data of the current divided area is set to the read frequency data, and the current time and An operation is performed on the read time difference data to obtain the time of the new divided area, and the set frequency data is obtained by the operation. Time is achieved by providing a control means for displaying changes the reception frequency and the current time of said display means in response to.

[0008]

The ID logic memory stores reception frequency data receivable for each region divided in advance and data such as a broadcast station name corresponding to the reception frequency data. The corresponding frequency data etc. are called and reception control is performed, at the same time, from the data memory storing the time difference of each divided region, the time difference of the corresponding region is read by the microcomputer with the operation of changing the reception region, The time is calculated based on the time in the area before the change and the current time in the area after the change is displayed on the display, so if the area changes as the car travels, the time difference is automatically corrected, The trouble of handling the watch is completely eliminated.

[0009]

1 is a block diagram of an embodiment of an ID logic type data-equipped on-vehicle radio receiver according to the present invention, wherein 1 is a front end, 2 is an intermediate frequency amplifier, 3 is a demodulator, 4 is an audio frequency amplifier circuit, 5 is a phase locked loop (PLL), 6 is a milestone computer, 7 is a display unit, 8 is an ID logic memory, 9 is an operation unit, 10 is a speaker, and 11 is the ID logic memory. Another time difference database, which is constituted by a ROM, stores a time difference of each of the pre-divided areas stored in the ID logic memory 8. In this embodiment,
Time differences of other states, such as HA, AK, CO, and IL, are stored based on CA (California). Reference numeral 12 denotes a receiving antenna. The dotted line shows the data-equipped in-vehicle radio receiver,
The front end 1 has an input coupled to the reception antenna 12 and an output coupled to the intermediate frequency amplifier circuit 2, and a reception tuning frequency is selected by the PLL 5. The microcomputer 6
Is connected to the PLL 5, the display unit 7, the ID logic memory 8, the time difference database 11 and the operation 9, respectively, and controls each unit of the data-equipped in-vehicle radio receiver in response to a user request.

The operation of this embodiment will be described mainly with reference to FIG. Antenna 12, front end 1, intermediate frequency amplifying circuit 2, demodulation circuit 3, audio frequency amplifying circuit 4, phase locked loop (PLL) 5, microcomputer 6, operation unit 9,
The part consisting of the speaker 10 has the same configuration and operation as a normal radio receiver, and therefore a description of this point is omitted. Now, assuming that the receiver is in the ID logic mode, and the traveling state changes due to the movement of the vehicle, the electric field strength of the received signal naturally becomes weaker. .

The operation is performed by a state / city selection key (not shown) included in the operation unit 9. When the state / city selection key is first pressed, a state / city input mode is entered. A state / city showing the current location of the car is displayed. Next, when the state / city selection key is pressed for 1.7 seconds or more, the state input mode is set. At this time, when a key in a desired direction of the up / down key (both are included in the operation unit 9 but not shown) is pressed, the state input mode is pressed. When the name is scroll selected and the up / down key in the desired direction is pressed for 1.7 seconds or more, the state name is fast-forwarded, and is sequentially displayed on the display unit 7 for 500 ms.

When the state / city selection key is pressed again, the mode is changed to the city input mode. At this time, when the key in the desired direction of the up / down key is pressed, the city name is scrolled and selected in the same manner as described above. When the key of the desired direction of the down key is pressed for 1.7 seconds or more, the city name is fast-forwarded and sequentially displayed on the display unit 7 for 500 ms. Thereafter, if the state / city selection key is pressed for 1.7 seconds or longer, or if no key input is performed within 5 seconds, the state / city input mode is automatically released,
Return to normal mode.

When the state / city displayed on the display unit 7 is changed by the above operation, the microcomputer 6 sets the time difference between the state / city before change and the state / city after change as a reference. Database 1
1, the current time in the state / city after the change is calculated and displayed on the display unit 7.

The microcomputer 6 reads out a receivable broadcast station corresponding to the displayed state / city from the data stored in the ID logic memory 8 and drives the phase synchronization circuit 5 to switch to broadcast reception in that area. At this time, if the broadcast content of a specific genre is specified as described above, the broadcast station of that genre is automatically selected from the receivable broadcast stations.

In the configuration of the above-described embodiment, the time display is automatically corrected for the time difference when the display of the state / city is changed, but it is needless to say that the time can be manually corrected.

[0016]

As described above, according to the present invention, when a new divided area is selected by the selecting means, the frequency data and the time difference data corresponding to the new divided area are obtained from the reception frequency data memory and the time difference data memory. Is read, the frequency data of the current divided area is set to the read frequency data, and the current time and the read time difference data are operated to obtain the time of the new divided area,
The reception frequency of the display means and the display of the current time are changed according to the set frequency data and the time obtained by the calculation, so that when the area changes with the traveling movement of the car, the user can change the display. By simply selecting a region, it is possible to switch to a reception frequency that can be received in the region, and to easily change to a current time in the region in consideration of a time difference.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front end 2 Intermediate frequency amplification circuit 3 Demodulation circuit 4 Audio frequency amplification circuit 5 Phase synchronization circuit (PLL) 6 Microcomputer 7 Display unit 8 ID logic memory 9 Operation unit 10 Speaker 11 Time difference database 12 Antenna

Claims (1)

(57) [Scope of request for utility model registration] 1. A display means capable of displaying a reception frequency and a current time; a reception frequency data memory for storing frequency data receivable for each of divided regions; and a time difference data for each of the divided regions. A time difference data memory, selecting means for selecting any of the divided areas, and when a new divided area is selected by the selecting means,
The frequency data and the time difference data corresponding to the new divided area are read from the reception frequency data memory and the time difference data memory, the frequency data of the current divided area is set to the read frequency data, and the current time is set. And the calculated time difference data to calculate the time of the new divided area, the set frequency data,
And a control means for changing the display of the reception frequency of the display means and the display of the current time according to the time obtained by the calculation.