JPS6358408B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a receiver, and particularly to a receiver improved so as to be able to easily recognize broadcasting station names, for example, when a common frequency is used in different regions.

Currently, various broadcasting frequencies are used in various places, and in some areas, the same frequency is often used. For example, in the case of AM broadcasting, the output
This tendency is particularly strong for broadcasting stations of less than 20kW. Therefore, when traveling from place to place by car, the driver can know the reception frequency of the car radio, but if he is not familiar with the local broadcast station, he cannot know what broadcasts he is listening to. in this way,
When listening to broadcasts in various locations using the same receiver, conventional receivers have the disadvantage that it is not easy to know the name of the broadcasting station being received.

Therefore, the main object of the present invention is to provide a receiver that eliminates the above-mentioned drawbacks and allows you to easily know the name of any broadcasting station even when receiving any broadcasting station in any area. It is to be.

To summarize, this invention presets a predetermined radio wave intensity pattern in an intensity pattern storage means corresponding to a plurality of predetermined regions and a predetermined broadcast frequency of a predetermined broadcasting station, Further, for each predetermined reception area, a predetermined broadcasting station name is preset in the frequency-broadcasting station name storage means in correspondence with the frequency, and the broadcasting station name is preset in the frequency-broadcasting station name storage means for each predetermined reception area. The reception area is determined, and based on the determined reception area, the corresponding broadcast station name from among the preset broadcast station names is read out, and the read broadcast station name is notified.

The above objects and other objects and features of the present invention will become more apparent from the following detailed description with reference to the drawings.

The drawing is a schematic block diagram showing one embodiment of the present invention. In the configuration, a received output of a receiving circuit 1 is given to a speaker 4 via a detection circuit 2 and an amplifier circuit 3. The above configuration is well known from conventional radio receivers.

Although not shown, the control circuit 5 includes, for example, a microcomputer and the like, and performs setting of the reception frequency of the receiver, switching of modes, and various calculations. Although not shown, the reception frequency setting circuit 6 includes, for example, a decoder and the like, and converts the reception frequency setting code given from the control circuit 5 into predetermined frequency information. This frequency information is given to the receiving circuit 1 and the radio wave intensity pattern storage circuit 8. The receiving circuit 1 changes its receiving frequency according to frequency information given from the receiving frequency setting circuit 6. An example of such a receiving circuit is an electronically tuned tuner. The receiving circuit 1 outputs an intensity signal of the received radio waves. Such a strength signal includes, for example, the AGC included in the receiving circuit 1.
The output of a circuit (not shown) is used. This strength signal is given to a reception frequency strength measuring circuit 7.
The received frequency strength measuring circuit 7 is for converting the applied strength signal into a digital code.

On the other hand, in the radio wave intensity pattern storage circuit 8, radio wave intensity patterns are preset corresponding to broadcast frequencies of a plurality of regions and a plurality of broadcast stations. The broadcast frequencies of the multiple broadcast stations mentioned above are:
For example, in the case of medium waves, frequencies are selected that are not used in other areas, such as the broadcast frequencies of commercial broadcasting in large cities and most NHK basic stations. This is because, as will be explained in detail later, these broadcast frequencies are used as reference broadcast frequencies when determining the reception area. The radio wave intensity pattern preset in the radio wave intensity pattern storage circuit 8 is determined as follows. That is, using the receiver of this embodiment, the strength of received radio waves when receiving a predetermined broadcasting frequency in a predetermined area is checked in advance, and the strength of the received radio waves is determined in each area and It is preset corresponding to each broadcast frequency. Furthermore, the radio wave intensity pattern storage circuit 8 is given regional information from the reception region determination circuit 10 . The frequency information and area information given to the radio wave intensity pattern storage circuit 8 act as address information for specifying a specific frequency and area, respectively.

Received radio wave intensity data 7a outputted from the received frequency intensity measurement circuit 7 and preset intensity data 8 outputted from the radio wave intensity pattern storage circuit 8.
a is given to the comparator circuit 9. The comparison circuit 9 is
Although not shown, it includes, for example, a subtraction circuit and the like, and subtracts preset intensity data 8a from received radio wave intensity data 7a. The subtracted output of the comparison circuit 9 is given to the reception area determination circuit 10. Although not shown, the reception area determination circuit 10 includes, for example, a memory circuit, an arithmetic circuit, an address counter, etc., and determines the reception area based on the comparison result provided from the comparison circuit 9. Note that, as described above, the area information 10a is provided to the radio wave intensity pattern storage circuit 8 of the reception area determination circuit 10, but this area information 10a
is updated at a predetermined timing by an address counter (not shown) of the reception area determination circuit 10. Further, when the reception area determination circuit 10 determines the reception area, the reception area determination circuit 10 sends the area determination information 1 to the control circuit 5.
Gives 0b. When the receiver is in the area determination mode, the control circuit 5 provides the reception area determination circuit 10 with a control signal. This control signal acts as an activation signal for the reception area determination circuit 10.

In the frequency-broadcasting station name storage circuit 11, broadcasting station names are preset corresponding to a plurality of reception areas and a plurality of broadcasting frequencies. The plurality of reception areas may be exactly the same as the plurality of reception areas classified in the radio wave intensity pattern storage circuit 8 described above.
However, the plurality of broadcast frequencies in the frequency-broadcast station name storage circuit 11 include, for example, broadcast frequencies of low-power local broadcast stations in addition to the broadcast frequencies that should serve as the reference. This frequency/broadcasting station name storage circuit 11 is connected to the control circuit 5 via an address bus and a data bus.

Address information is given to the voice memory 13 from the control circuit 5, and its contents are read out. The read voice information is synthesized by the voice synthesizer 12. The output of this speech synthesizer 12 is first sent to the amplifier circuit 3.
given to.

Note that a set frequency UP switch 14 and a set frequency DOWN switch 15 are connected to the control circuit 5. The control circuit 5 increases the set frequency code given to the receiving frequency setting circuit 6 by a predetermined frequency every time the set frequency UP switch 14 is operated. Conversely, the control circuit 5 controls the set frequency
Every time the DOWN switch 15 is operated, the set frequency code given to the reception frequency setting circuit 6 is lowered by a predetermined frequency. Such switches 14 and 15 are operated in normal times to change the set frequency.

In operation, when the power is turned on, the control circuit 5
puts the receiver in the area determination mode and provides an activation signal to the reception area determination circuit 10. In response, an address counter (not shown) of the reception area determination circuit 10 is started and provides area information 10a to the radio wave intensity pattern storage circuit 8. Furthermore, the control circuit 5 provides a predetermined setting frequency code to the reception frequency setting circuit 6. This predetermined setting frequency code is the setting code of the broadcasting frequency of the broadcasting station, which is the predetermined standard described in the configuration. This reference broadcast frequency setting code is updated to a different reference broadcast frequency setting code at every predetermined timing. In addition,
The timing of updating the reference broadcasting frequency setting code and the timing of incrementing the address counter (not shown) of the reception area determination circuit 10 are selected in the following relationship. That is, the address counter of the receiving area determination circuit 10 is incremented by +1 each time the reference broadcasting frequency setting code is updated through all predetermined reference broadcasting frequencies.

Frequency information from the reception frequency setting circuit 6 is given to the reception circuit 1 and the radio wave intensity pattern storage circuit 8. Therefore, the receiving frequency of the receiving circuit 1 is set to a predetermined reference broadcasting frequency. The intensity of the radio wave received by the receiving circuit 1 is converted into a digital code by the receiving frequency intensity measuring circuit 7 and is provided to the comparing circuit 9. Further, the intensity pattern corresponding to the area information 10a and the frequency information is read out from the radio wave intensity pattern storage circuit 8 and provided to the comparison circuit 9. The comparator circuit 9 subtracts the preset strength data 8a from the received radio wave strength data 7a, and stores the result in a storage circuit (not shown) of the reception area determination circuit 10. By the way, the update timing of the reference broadcasting frequency from the control circuit 5 and the increment timing of the address counter (not shown) of the reception area determination circuit 10 (that is, the update timing of the area information 10a) are selected to have the above-mentioned relationship. Therefore, as many subtraction results as there are predetermined reference broadcast stations for one region can be obtained.
These multiple subtraction results are accumulated and stored in the storage circuit of the reception area determination circuit 10 as determination information. The above operation cycle is repeated, and the storage circuit of the reception area determination circuit 10 stores determination information corresponding to each of a plurality of predetermined areas. Next, the arithmetic circuit (not shown) of the reception area determination circuit 10 selects the one with the smallest value among the plurality of determination information. Then, the area corresponding to the selected determination information is determined as a receiving area, and the area determination information 10b is provided to the control circuit 5.

When the control circuit 5 receives the area determination information 10b, it switches the receiver to the normal reception mode. After that, the user selects the set frequency change switch 14, 15.
When the receiver is tuned to a desired broadcasting station by operating the
Frequency-broadcasting station name storage circuit 1 stores predetermined address information based on 0b and the set frequency information at that time.
Give to 1. As mentioned above, the frequency-broadcasting station name storage circuit 11 has preset broadcasting station names corresponding to predetermined reception areas and broadcasting frequencies, and is preset in accordance with the address information given from the control circuit 5. Then, the station name of the broadcasting station that the receiver is receiving at that time is read out. This read broadcast station name information is given to the audio memory 13, and the corresponding audio information is read out. The voice synthesizer 12 synthesizes the voice information and sends it to the speaker 4 via the amplifier circuit 3.
Let it be uttered from Therefore, the user can know the name of the broadcasting station being received.

As described above, according to this embodiment, the strength patterns of radio waves preset corresponding to a plurality of reference broadcasting frequencies for each of a plurality of regions are compared with the strength of the received radio waves obtained from the receiving circuit 1. Since the reception area is determined, the reception area can be determined very accurately. Therefore, the user can know the exact name of the broadcasting station.

In the above-described embodiment, the preset strength data 8a is subtracted from the received radio wave strength data 7a for each predetermined area, and the sum is used as judgment information. The intensity data 8a may be multiplied, and the multiplication results may be accumulated for each region and used as determination information. Furthermore, if the advantage of being able to determine the receiving area very accurately as in the above-mentioned embodiment is not desired, the radio wave intensity pattern storage circuit 8 may be configured to use a single standard corresponding to a plurality of predetermined areas. The intensity pattern of radio waves for broadcast frequencies may be preset. In this case, updating of the reference broadcast frequency setting code in the control circuit 5 will be omitted.

Further, in the above-described embodiment, the output of the received frequency strength measurement circuit 7 is directly compared with the contents of the radio wave strength pattern storage circuit 8. However, for example, a storage circuit may be provided and each time the reference broadcast frequency is updated. The intensity data 7a of the received radio waves may be stored once and then subjected to comparison calculations later.

Further, in the above-described embodiment, the receiver is automatically switched to the region determination mode when the power is turned on, but a region determination mode changeover switch may be newly provided, for example.

In addition, in the above embodiment, audio is used to announce the name of the broadcasting station, but it is also possible to use optical notification means such as a character display using a dot matrix or a light emitting diode to notify visually. The name of the broadcasting station may be announced in a recognizable manner.

As described above, according to the present invention, the receiving area is determined based on the intensity of the broadcast radio waves received by the broadcast radio wave receiving means and the predetermined radio wave intensity pattern stored in advance in the intensity pattern storage means. Based on the receiving area determination information and frequency information, the corresponding broadcasting station name is read out from the frequency-broadcasting station name storage means and announced, so even if any broadcasting station is received in any area, it is easy to receive. You can know the name of the broadcasting station.

[Brief explanation of drawings]

The drawing is a schematic block diagram showing one embodiment of the present invention. In the figure, 1 is a receiving circuit, 4 is a speaker, and 5 is a receiving circuit.
1 is a control circuit, 7 is a reception frequency strength measurement circuit, 8 is a radio wave strength pattern storage circuit, 9 is a comparison circuit, 1
0 represents a receiving area determination circuit, 11 represents a frequency/broadcasting station name storage circuit, 12 represents a voice synthesizer, and 13 represents an audio memory.

Claims (1)

[Scope of Claims] 1. Broadcast radio wave receiving means for receiving broadcast radio waves; Receiving frequency setting means for setting the receiving frequency of the broadcast radio wave receiving means; Broadcast radio waves received by the broadcast radio wave receiving means. a radio wave intensity detection means for detecting the intensity of a radio wave, and an intensity pattern memory that stores in advance a predetermined radio wave intensity pattern corresponding to a plurality of predetermined areas and corresponding to a broadcast frequency of a predetermined broadcasting station. Means: When the broadcast radio wave receiving means receives a broadcast radio wave from the predetermined broadcasting station, the radio wave intensity detected by the radio wave intensity detection means and the radio wave intensity pattern stored in the intensity pattern detection means are combined. reception area determining means for determining which of the plurality of predetermined reception areas the current reception area corresponds to based on the plurality of predetermined reception areas, and outputting area determination information when determining the area; frequency-broadcasting station name storage means for pre-storing a predetermined broadcasting station name corresponding to the frequency for each received reception area; frequency information from the reception frequency setting means and area determination information from the area determination means; broadcasting station name reading means for reading out a corresponding broadcasting station name from the frequency-broadcasting station name storage means; and a broadcasting station for notifying the broadcasting station name read by the broadcasting station name reading means. A receiver equipped with name notification means.