JPH0634335U - Radio receiver - Google Patents

Abstract

(57) [Summary] [Purpose] The preset contents can be erased and then restored easily. [Configuration] When the pressing time of the preset switch 13a of each channel of the radio receiver 1 is less than 2 seconds, the reception frequency of the channel is determined to be a calling operation of the reception frequency from the memory 12 via the processing circuit 11. It is read out and set, and the receiving circuit 2 receives it. When it is 2 seconds or more, the frequency of the broadcast being received is written as the reception frequency in the memory 12 as the reception frequency writing operation, and when it is 5 seconds or more, the restoration frequency writing operation is performed. The frequency of the broadcast received as is written in the memory 12 as the return frequency. When the recall switch 13c is pressed during reception, the receiving circuit 2 reads the return frequency from the memory 12 and checks the electric field strength thereof to determine whether or not reception is possible. If reception is possible, the reception frequency stored in the memory 12 is replaced with the content of the recovery frequency.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a radio receiver which is preferably implemented as a vehicle-mounted radio receiver having a so-called auto-preset function that automatically presets a frequency of a broadcasting station having a high received electric field strength.

[0002]

[Prior art]

 The conventional preset function is preferably carried out by an in-vehicle radio receiver mounted on an automobile, and for example, the frequency of broadcasting frequently heard by a listener in a normal living area, for example, a channel switch for a certain period of time. If you press and hold the channel switch that was preset as described above from the state where you are listening to other broadcasts, you can change the frequency stored in the storage means. It is realized by being read out and making the broadcast on that frequency audible.

In addition, when a listener listens to a radio broadcast while traveling outside the normal living area, the preset frequency in the living area cannot be heard, so that the broadcast that can be heard in that area is not possible. It is necessary to newly preset the frequency in the same procedure and listen to the broadcast of that frequency. For this reason, in order to reduce the burden of complicated preset operations, the reception frequency is swept so that the broadcast frequency with high reception electric field strength, that is, clear reception can be automatically preset. A configuration with a function called "auto preset" is used.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, the frequency preset in association with each channel switch in the living area and the frequency re-preset by auto-presetting in the living area again after rewriting the preset frequency are For example, they do not necessarily match due to differences in the electric field strength at the preset operation location. Therefore, even if the operator tries to listen to the desired broadcast, he / she does not know which channel switch the broadcast corresponds to, and in order to restore the original preset contents he / she is familiar with, a preset operation is performed for each channel switch. Has to be redone and is inferior in operability.

Therefore, even if the frequency is preset in the normal living area, if a different frequency is preset outside the living area, the previous frequency is rewritten, and when returning to the living area again, the frequency in the living area is set again. It had to be set again, which was a great deal of work.

An object of the present invention is to provide a radio receiver with improved operability that can be easily restored after erasing preset contents once.

[0007]

[Means for Solving the Problems]

 The present invention provides one or a plurality of preset operation means, a first storage means having a storage area individually corresponding to each preset operation means, and a storage area individually corresponding to each preset operation means. Information related to the reception frequency is written in the first storage means by a predetermined first operation of each of the two storage means and each preset operation means, and received by the second storage means by a predetermined second operation of the preset operation means. A radio frequency is set at the reception frequency setting means for writing the information related to the frequency and for reading the corresponding information from the first storage means by the preset third operation of the preset operation means, and at the frequency set by the reception frequency setting means. The reception frequency setting means includes a receiving means for receiving a broadcast and a return operation means. When the return operation means is operated, the reception frequency setting means stores the information. Whether or not it is possible to receive at the frequency corresponding to the stored second storage means is determined based on the output from the receiving means, and if possible, the second storage means is dealt with. A radio receiver characterized in that the stored contents of the first storage means are updated to the stored contents of the second storage means.

[0008]

[Action]

 According to the invention, the radio receiver comprises one or more preset operating means and return operating means. In addition, a first storage means and a second storage means each having a storage area individually corresponding to each preset operation means are provided therein, and both write and read information to and from each storage area. It is connected through the reception frequency setting means for performing the processing of. Further, the reception frequency setting means is connected to the reception means.

The operator can write the information related to the reception frequency from the reception frequency setting means to the first storage means by a predetermined first operation of each preset operation means. Similarly, the second operation, for example, the operation on the preset operation means for a longer time than the first operation allows the information related to the reception frequency for restoration to be written in the second storage means.

When receiving a radio broadcast, the reception frequency setting means performs corresponding third information from the first storage means by a third predetermined operation of the preset operation means, for example, an operation shorter than the first operation. Read out. The receiving means receives the radio broadcast at the frequency corresponding to the read information.

On the other hand, a return operation means is also provided in association with the reception frequency setting means, and when the return operation means is operated, the reception frequency setting means stores each of the information stored therein. It is determined whether or not reception at the frequency corresponding to the two storage means is possible, based on the output from the reception means, and when possible, the storage of the first storage means corresponding to the second storage means. The contents are updated to the contents stored in the second storage means.

Therefore, even if the preset contents are once rewritten by the first operation, when the preset operation preset by the second operation can be heard by the operation of the return operation means, it is read out. Since the preset contents that should be used are automatically restored, even if the preset contents are changed, it is possible to easily restore the preset contents that are frequently used and improve the operability.

[0013]

【Example】

 FIG. 1 is a block diagram showing an electrical configuration of a radio receiver 1 according to an embodiment of the present invention. In this radio receiver 1, the reception signal received by the antenna 4 is input to the detection circuit 6 via the front end circuit 5 in the reception circuit 2 which is the receiving means, and demodulated into an audio signal. The audio signal is given to the speaker 8 via the low frequency amplifier circuit 7 and is sonicated.

An S meter detection circuit 9 is provided in relation to the front end circuit 5. The S meter detection circuit 9 receives an intermediate frequency output from the front end circuit 5 and outputs the intermediate frequency output. Is detected by direct current and is output to the processing circuit 11 which is realized by a microcomputer or the like and is a reception frequency setting means as a detection output indicating the reception electric field strength. The processing circuit 11 has a timer 15 and sends to a phase lock loop (hereinafter abbreviated as PLL) circuit 10 information such as an N value in order to perform a tuning operation as described later based on the S meter output. The data of is output.

In relation to the processing circuit 11, a memory 12 as first and second storage means, an operation switch 13, and a display device 14 are provided. The memory 12 stores the reception frequency and the return frequency preset by the input operation from the operation switch 13. In response to the tuning operation from the operation switch 13, the processing circuit 11 causes the front-end circuit 5 to perform a tuning operation based on the stored contents of the memory 12 and the display device 14 Is displayed.

That is, the processing circuit 11 responds to the operation of the preset switch 13a of a plurality of channels from 1 to n channels in the operation switch 13, in response to the reception frequency of the reception frequency corresponding to the preset switch 13a of the operated channel. The N value is read from the memory 12 and set in the PLL circuit 10. As a result, the modulated frequency of the front end circuit 5 becomes a value corresponding to the preset frequency, and reception is performed. When the auto preset switch 13b is operated, the processing circuit 11 changes the oscillation frequency of the PLL circuit 10 to sweep the reception frequency, and writes the N values to the memory 12 in order from the frequency with the highest received electric field strength. I'm going to get crowded. When the recall switch 13c is operated, an automatic return operation as described later is performed.

When receiving a radio broadcast, the operator presets the frequency of the broadcast that he or she wants to listen to in advance in the living area in association with each preset switch 13a, and presets the preset content as necessary. Read and receive. However, if the user tries to receive by going out of the living area, the preset contents in the living area cannot be received successfully. Therefore, it is necessary to rewrite the preset contents.

In such a case, in the present invention, if the preset contents in the living area are stored in the memory 12 as the return frequency by the second operation, the reception frequency can be set by the first operation. Even if the content is rewritten to another content, just by operating the recall switch 13c, when the reception frequency can be received, the reception frequency is automatically rewritten and it returns to the living area again. Sometimes you can save the trouble of resetting the preset contents.

FIG. 2 is a time chart showing a pressing time of the preset switch 13a of the radio receiver 1 of the present invention and an operation of the processing circuit 11 corresponding to the pressing time. In one embodiment of the present invention, the difference between receiving frequency calling, receiving frequency writing, and returning frequency writing is distinguished by the difference in the pressing time of the preset switch 13a corresponding to each channel. That is, at time t1, when the preset switch 13a of a certain channel is pressed, the timer 15 is activated to start measuring the pressing time of the preset switch 13a. If the time from pressing the switch to releasing the switch is less than 2 seconds, it is determined that the operation is to call the reception frequency, and the stored contents of the memory 12 corresponding to the pressed channel are read and reception is performed at the preset frequency.

If two seconds or more have elapsed from the time t1 when the preset switch 13a was pressed to the time t2 when the press was released, it is determined that the frequency writing operation for reception is performed, and The N value is written in the storage area of the reception frequency in the corresponding area of the memory 12. Furthermore, when the pressing time of the preset switch 13a has exceeded 5 seconds or more, it is determined that the frequency writing operation for the recovery is performed, and the recovery frequency storage area of the memory 12 corresponding to the pressed channel is Write the N value for the received frequency for recovery.

FIG. 3 is a flow chart showing the timer processing operation by pressing the preset switch 13a, FIG. 4 is a flow chart of the pressing processing of the recall switch 13c, and FIG. 5 is an embodiment of the present invention. It is a flowchart showing a part of the main processing of.

First, FIG. 3 shows, as an example, timer processing when the preset switch 13a of channel 1 is pressed. In step a1, it is confirmed whether or not the preset switch 13a of the channel 1 is pressed. If not, the flag SW1f (first switch-on flag) is cleared in step a2. If the preset switch 13a of the channel 1 has been pressed, the process moves from step a1 to step a3, and it is confirmed whether or not the flag SW1f is cleared. If the flag SW1f has been cleared, the preset switch 13a has not been pressed for the first time this time, so the timer 15 is activated after being reset in step a4. Next, in step a5, the flag SW1f is set to 1, in step a6 the reception frequency is called, and the memory 12 that stores the N value related to the reception frequency preset for channel 1 is stored. Is read from and received.

When the flag SW1f is 1 in step a3, it is determined that the preset switch 13a of the channel 1 has been continuously pressed. In the next step a7, the pressing time of the preset switch 13a is checked. If 2 seconds have not elapsed, this process is terminated and the process proceeds to another process. If 2 seconds have elapsed, the current reception is being performed in step a8. The broadcast frequency is written in the area for storing the N value of the receiving frequency of channel 1 of the memory 12 as the receiving frequency. Next, in step a9, the pressing time is checked again. If 5 seconds have not elapsed, this process ends and the process proceeds to another process. If 5 seconds have elapsed, the frequency of the broadcast currently being received is determined in step a10. Is written in the area for storing the N value of the return frequency of the channel 1 of the memory 12 as the return frequency. In this way, the process of the timer process is completed, and the process proceeds to the process of pressing the recall switch 13c.

In step b1, it is confirmed whether or not the recall switch has been pressed. If not, the process returns to the main routine. If pressed, the return mode start flag RMf is set to 1 in step b2, and the process returns to the main routine.

In the main routine, it is first checked in step c1 whether or not the flag RMf is set to 1. If it is not set, the process proceeds to another process. The frequency is read from the memory 12, and the electric field strength of the recovery frequency is checked within a time period of about 0.1 second, in which the received voice is not interrupted. In step c3, it is confirmed whether or not the electric field strength is equal to or higher than a predetermined level and clear reception is possible. If it is possible, in step c4, the return frequency is set to the reception frequency. This completes the processing of the return mode of one channel.

When the reception is not possible in step c3 and when the reception is possible and the process of step c4 is completed, the return frequency is exchanged to the reception frequency of all channels in the next step c5. It is confirmed whether or not is completed. If it is not completed, this process is terminated and the process shifts to another process. When all channels have been exchanged, the flag RMf is cleared and the processing of the automatic return mode is terminated.

After this processing is completed, other processing such as displaying the reception frequency on the display device 14 is performed. The processing of the flowchart shown in FIG. 5 is repeated until the power of the radio receiver 1 is cut off or the reception frequencies of all channels are exchanged with the return frequency.

As described above, the preset contents can be returned to the preset return frequency by a simple switch operation. Therefore, even if the preset contents are once rewritten such as going out of the living area, the previous preset frequency corresponding to each preset switch 13a is automatically set when the return operation is performed and reception becomes possible. The operability can be improved without causing confusion and without having to redo complicated preset operations. Further, in the present embodiment, the switching to the automatic return mode is judged by whether or not the recall switch 13a is pressed, but other operations such as simultaneously operating a plurality of switches which are not normally operated are performed. You may make it use the means of.

[0029]

[Effect of device]

 As described above, according to the present invention, the information about the return frequency written in the second storage means by the preset second operation of the preset operation means is the same as that of the frequency at the frequency when the return operation means is operated. When reception becomes possible, the contents stored in the first storage means are updated and written. Therefore, even when the content stored in the first storage means is temporarily changed, the second storage means stores desired information, for example, information relating to the reception frequency of a broadcasting station that is frequently listened to. Even if the preset contents are changed, it is possible to easily return to the preset contents that are frequently used and improve operability.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a radio receiver 1 according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a pressing time of a preset switch 13a of the radio receiver 1 and an operation of the processing circuit 11 corresponding to the pressing time.

FIG. 3 is a flowchart showing a timer processing operation by pressing a preset switch 13a.

FIG. 4 is a flowchart of a pressing process of a recall switch 13c.

FIG. 5 is a flowchart of processing in the automatic return mode.

[Explanation of symbols]

 1 Radio Receiver 2 Reception Circuit 9s Meter Detection Circuit 10 PLL Circuit 11 Processing Circuit 12 Memory 13 Operation Switch 13a Preset Switch 13b Auto Preset Switch 13c Recall Switch 15 Timer

Claims (1)

[Scope of utility model registration request] 1. One or more preset operating means, a first storage means having a storage area individually corresponding to each preset operating means, and a storage area individually corresponding to each preset operating means. Information related to the reception frequency is written in the first storage means by a predetermined first operation of the second storage means and each preset operation means, and is stored in the second storage means by a predetermined second operation of the preset operation means. Reception frequency setting means for writing information related to the reception frequency and reading the corresponding information from the first storage means by a third predetermined operation of the preset operation means, and a frequency set by the reception frequency setting means, The receiving frequency setting means stores the information when the returning operation means is operated, including a receiving means for receiving a radio broadcast and a returning operation means. Whether or not reception at the frequency corresponding to each of the second storage means is possible is determined based on the output from the reception means, and when possible, the first corresponding to the second storage means. A radio receiver characterized in that the stored content of the storage means is updated to the stored content of the second storage means.