JPH09238052A - Broadcast reception system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain safety driving by providing a same broadcast frequency search device and an output device so as to allow the system to receive automatically a radio wave with a highest electric field strength in its resident area among radio waves of a same broadcast program anywhere in the country. SOLUTION: A reception device 3 able to receive a radio wave is provided in addition to a reception device 1, and the same broadcast frequency search device 4 is provided, which retrieves a broadcast frequency with a highest electric field strength at present among plural save broadcast program frequencies for the same broadcast program desired to be received, and the search device 4 retrieves the desired radio wave among radio waves received by the receiver 3. Then the radio wave retrieved by the search device 4 is detected by a frequency storage device 5, and a frequency comparison device 6 is provided, which compares whether or not the detected radio wave frequency is the same as the frequency of the broadcast outputted by the output device 2 and the output device 2 outputs the broadcast of the frequency retrieved by the search device 4 when the comparison indicates negation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving system.

[0002]

2. Description of the Related Art
For example, while driving a long distance in a car and receiving a NHK FM broadcast on a car stereo radio in the car,
Every time the area changes, the reception of radio waves deteriorates, and it is necessary to adjust the frequency each time and adjust the frequency to the place where the radio waves received most often can be heard.

In this case, it is necessary to adjust the radio frequency one by one, and it is very dangerous because it may be troublesome and the safe driving may be impaired by adjusting the frequency during driving.

The present invention has been made in order to solve the above-mentioned conventional problems, and automatically receives the strongest radio wave in the same region regardless of the region in the country. It is an object of the present invention to provide a broadcast receiving system that can be operated and does not impair safe driving.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

From the broadcast radio waves in which the same broadcast is transmitted at different frequencies depending on the region, the strongest same broadcast frequency is retrieved from a plurality of the same broadcast frequencies in which the same broadcast as the one to be received is transmitted. The present invention relates to a broadcast receiving system having a broadcast frequency search mechanism 4 and an output mechanism 2 for outputting a broadcast of a frequency searched by the search mechanism 4.

Further, the same broadcast frequency search mechanism 4 is searched for the strongest same broadcast frequency at present among a plurality of the same broadcast frequencies in which the same broadcast as that output by the output mechanism 2 is transmitted. The output mechanism 2 is configured to output the broadcast of the searched frequency when the frequency searched by the search mechanism 4 and the frequency of the broadcast output by the output mechanism 2 are different from each other. The present invention relates to the broadcast receiving system according to claim 1.

Further, the same broadcast frequency search mechanism 4 is configured to operate when the reception level of the broadcast output by the output mechanism 2 becomes equal to or lower than a predetermined value. 2. The broadcast receiving system according to claim 1, wherein the output mechanism 2 is configured to search for the same broadcast frequency that is the strongest at present among the broadcast frequencies and output the broadcast of the searched frequency. is there.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention (how to carry out the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

A search mechanism 4 for searching the strongest frequency of a received signal from radio waves oscillating the same broadcast at different frequencies for each region is provided so that the broadcast of the frequency searched by this search mechanism 4 can be output. Therefore, it is possible to tune to the frequency with the best radio wave reception without adjusting the frequency with the best radio wave reception each time the area changes as in the conventional case.

Therefore, it is not necessary to manually adjust the frequency adjusting member of the car stereo during driving, and safe driving is not impaired.

Since the output mechanism 2 outputs the broadcast and the search mechanism 4 for searching the strongest frequency of the same broadcast is provided,
When the frequency of the same broadcast that receives a stronger radio wave than the currently received frequency appears, this frequency is output, so you can always receive the strongest radio wave of the received broadcast, You can receive the broadcast best.

When the strength of the currently received radio wave falls below a certain level, the same broadcast frequency search mechanism 4 operates so that the search mechanism 4 provides the strongest frequency of the same broadcast at this time. Since it is possible to search for and output the broadcast by receiving the strongest radio wave, it is possible to always receive a good radio wave.

[0014]

Embodiments of the present invention will be described with reference to the drawings.

A case of a first embodiment in which two receiving mechanisms are provided in a broadcast receiving system such as a radio or a television mounted on or carried in a vehicle such as an automobile or a train will be described with reference to FIG. The case of the second embodiment provided will be described with reference to FIG. In the broadcast receiving system as shown in FIG. 1, the receiving mechanism 1 receives a radio wave to be received, and the output mechanism 2 outputs the broadcast of the radio wave so that a desired broadcast can be received. A combination of the output mechanism 2 and the output mechanism 2 has the same configuration as that of a broadcast receiving system such as a normal radio or television.

In the present embodiment, a receiving mechanism 3 capable of receiving radio waves is provided separately from the receiving mechanism 1, and the same broadcast as the broadcast desired to be received is selected from among broadcast radio waves in which the same broadcast is transmitted at different frequencies depending on regions. The same broadcast frequency search mechanism 4 for searching the strongest same broadcast frequency among a plurality of the same broadcast frequencies transmitted by is provided so that the search mechanism 4 can search the radio wave received by the receiving mechanism 3. .

The radio wave retrieved by the search mechanism 4 is detected by the frequency storage mechanism 5, and it is determined whether the frequency of the detected radio wave is the same as or different from the frequency of the broadcast output by the output mechanism 2. A frequency comparison mechanism 6 for comparison is provided, and when the frequencies are different, the output mechanism 2 outputs the broadcast of the frequency searched by the search mechanism 4.

At this stage, the receiving mechanism 1 adjusts so that the frequency searched by the search mechanism 4 can be received.

As described above, the receiving mechanism 1 receives the strongest radio wave of the broadcast desired to be received at the present time, and the output mechanism 2 outputs the broadcast. Thereafter, at the next time point, the strongest broadcast frequency is received. By repeating the reception by 3 and the search by the search mechanism 4, the strongest radio wave of the received broadcast can be always received, and the best broadcast can be received.

Next, in the broadcast receiving system as shown in FIG. 2, the receiving mechanism 1 receives the radio wave to be received, and the broadcast of the radio wave is output by the output mechanism 2 so that the desired broadcast can be received. According to the second embodiment of the present invention, when the reception level of the broadcast output by the output mechanism 2 becomes lower than a predetermined value, the same broadcast as the broadcast output by the output mechanism 2 is received. The same broadcast frequency search mechanism 4 that searches for the strongest same broadcast frequency among the plurality of same broadcast frequencies being operated is activated, and at the same time, the reception mechanism 1 receives radio waves in all frequency bands of the broadcast being received, The search mechanism 4 searches for the strongest same broadcast frequency among a plurality of same broadcast frequencies at the present time, and the searched frequency is detected by the frequency storage mechanism 5, and the detected frequency of the radio wave is detected. The broadcast to be output in the output mechanism 2.

The reception level detecting mechanism 7 is provided to determine whether the reception level of the broadcast output by the output mechanism 2 is below a predetermined value. It is configured to detect whether or not the reception level of the broadcast being broadcast falls below a predetermined value, and to operate the search mechanism 4 when the reception level falls below the predetermined value.

Further, various methods are conceivable in which the strongest frequency of the received signal is automatically selected from the radio waves in which the same broadcast is oscillated at different frequencies for each region and the signal is output.

[0023]

EFFECT OF THE INVENTION A search mechanism is provided for searching the strongest frequency of a received signal from radio waves oscillating the same broadcast at different frequencies for each region, and the broadcast of the frequency searched by this search mechanism can be output. Therefore, it is possible to tune to the frequency with the best radio wave reception without adjusting the frequency with the best radio wave reception each time the area changes as in the conventional case.

Therefore, it is not necessary to manually adjust the frequency adjusting member of the car stereo during driving, and safe driving is not impaired.

When the output mechanism outputs a broadcast and a search mechanism for searching the strongest frequency of the same broadcast is provided, when the frequency of the same broadcast that receives a radio wave stronger than the currently received frequency appears. Since this frequency is output, the strongest radio wave of the received broadcast can always be received, and the best broadcast can be received.

When the strength of the currently received radio wave falls below a certain level, the same broadcast frequency search mechanism operates so that this search mechanism searches for the strongest frequency of the same broadcast. Since it is possible to output the broadcast by receiving the strongest radio wave, it is possible to always receive a good radio wave.

When the broadcast receiving system of the present invention as described above is adopted for a car stereo or the like, in particular, when driving a car for a long distance, even if the region changes, the radio wave with the best reception condition can be obtained. It can be received automatically and always can receive good broadcasts.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a broadcast receiving system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a broadcast receiving system according to another embodiment of the present invention.

[Explanation of symbols]

 2 Output mechanism 4 Search mechanism

Claims (3)

[Claims] 1. The strongest same broadcast frequency is searched for among a plurality of same broadcast frequencies from which the same broadcast as the one to be received is transmitted from among broadcast radio waves in which the same broadcast is transmitted at different frequencies depending on regions. A broadcast receiving system having a same broadcast frequency search mechanism and an output mechanism for outputting a broadcast of a frequency searched by this search mechanism. 2. The same broadcast frequency search mechanism is configured to search for the strongest same broadcast frequency among a plurality of same broadcast frequencies from which the same broadcast as that output by the output mechanism is transmitted. Then, the output mechanism is configured to output the broadcast of the searched frequency when the frequency searched by the search mechanism and the frequency of the broadcast output by the output mechanism are different. The broadcast receiving system described. 3. The same broadcast frequency search mechanism is configured to operate when the reception level of the broadcast output by the output mechanism becomes equal to or lower than a predetermined value. 2. The broadcast receiving system according to claim 1, wherein the output mechanism is configured to search for the strongest same broadcast frequency at the present time and output the broadcast of the searched frequency.