JPH0565123U - Radio receiver - Google Patents

Abstract

(57) [Summary] [Purpose] Even if a broadcast station is preset with different reception bands mixed, the preset station can be selected while selecting the same band. [Structure] When the up key is operated with the receiving band selected in step 81, the preset number is incremented by "1", and then it is checked whether or not the incremented preset number is in the same band. (Steps 88 and 89) If the band is the same, the broadcasting station with the preset number registered is immediately received (Step 87). If the incremented preset number is not within the same band, the tuning mode is continued without shifting to the reception mode, and the increment processing for the preset number is performed (steps 89 and 88). Therefore, the preset station of another band is not selected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a radio receiver suitable for application to an AM / FM radio receiver in which a broadcasting station can be preset.

[0002]

[Prior Art]

 In AM / FM radio receivers that can preset broadcasting stations to be received, each broadcasting station in a plurality of receiving bands can be preset randomly regardless of the receiving bands.

Therefore, for example, as shown in FIG. 6, in a radio receiver equipped with a memory capable of presetting a total of 32 stations, a selected reception band (AM or FM) and a broadcasting station are stored in a corresponding area of the memory. A, B, ... Z (FM band), a, b, ... Z (AM band) frequencies (reception frequencies) are stored in the preset order.

In the figure, station A in the FM band is preset (memory) in preset number 1, and station a in the AM band is stored in preset number 2 in the next preset.

The selection of preset stations is usually performed in the order of presets. In other words, by operating the up / down keys provided on the radio receiver body, the up / down is repeated in the preset order. Normally, tuning is started from the younger preset number.

Therefore, for example, even when the preset station C having the preset number 4 is selected, when the up key is operated, the sweep of the channel selection is performed from the preset number 1. Therefore, in the example of the figure, “FM / A station” is selected. -AM / a station-FM / B station "is swept. In other words, the AM band preset station is temporarily selected in the middle of the process even though the user wants to receive the FM band.

[0007]

[Problems to be solved by the device]

 In this way, broadcasting stations can be preset randomly regardless of the reception band, which is very convenient, but on the other hand, in the preset station tuning mode, it can be executed only in the preset order. Even in a band that I didn't think of, there was the inconvenience that when a broadcast station in another reception band was preset before the target preset station, the target preset station could not be selected without going through this.

Therefore, the present invention solves such a conventional problem, and sequentially selects only preset stations within the reception band selected in spite of random preset operation. It proposes a radio receiver that can be stationed.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, a radio receiver capable of randomly presetting each broadcasting station in a plurality of receiving bands regardless of the receiving band is used to randomly receive preset stations. It is characterized in that only preset stations within the selected reception band can be sequentially selected regardless of the preset.

[0010]

[Action]

 As shown in FIG. 2, when selecting a preset station (preset channel), the reception band is first selected, and then the sweep direction is selected using the up / down keys. Then, even if the broadcasting station is randomly reset in a state where the AM band and the FM band are mixed, by selecting the reception band in advance, the preset stations can be preset in the reception band or in the reverse order. Sweeping of will start.

Therefore, even when the broadcasting stations are preset in the order shown in FIG. 6, only the broadcasting stations A and B preset in the FM band are sequentially selected when receiving the FM band C station, for example. Therefore, even if the station a in the AM band is preset on the way, this is skipped and the next preset station B in the same FM band is selected.

[0012]

【Example】

 Next, an example of a radio receiver according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a system diagram of a main part of a radio receiver 10 showing an example thereof. In this example, AM bands and FM bands are illustrated as reception bands.

In the figure, reference numerals 11 and 12 denote receiving antennas, 13 denotes an FM receiving unit, which includes various signal processing systems including an FM tuner and the like for converting an FM signal into an audio signal. Reference numeral 14 is also an AM receiver.

Reference numeral 15 denotes a control circuit composed of a microcomputer, which controls a changeover switch 16 by a control signal generated from this to switch a reception band, select a reception channel, and control a volume. Be implemented. In addition to this, the display state of the display unit 30 provided on the panel surface of the receiver is controlled.

The display unit 30 displays a reception band, a reception frequency, a preset station preset number, and the like.

The operation panel 20 is provided with the following operation keys. Shown in the figure are the typical keys, and 21 is a common key for tuning and preset, which is a toggle type. Press once to enter tuning mode, and press again to enter preset mode.

Reference numeral 22 denotes a reception band switching key (band key), which also has the same configuration as the common key 21, and can switch between the AM band and the FM band alternately. Reference numeral 23 is an up key. When this key is pressed, the preset station goes up. The reception frequency increases during tuning. A down key 24 is the reverse operation of the up key 23. A set key 25 is used for storing the preset station in the preset mode. 31 indicates a memory which is also used for that purpose.

As a preset of the broadcasting station to be received, this example is also configured so that 32 stations can be preset as in FIG. 6, and the preset station is random regardless of the reception band. Therefore, the AM band can be preset next to the FM band, and then the specific station of the FM band can be preset again. It is also possible for the user to arbitrarily select which preset number and which station is to be reset.

When these keys provided on the operation panel 20 are operated, a key signal corresponding to them is taken into the microcomputer 15, and various control signals corresponding to the key signals are generated.

Now, in the radio receiver 10 configured as described above, according to the present invention, the preset station can be selected as follows. In other words, even when the broadcasting station is randomly set in a state where the AM band and the FM band are mixed, by selecting the reception band (AM or FM) in advance, the reception band within the reception band can be changed as shown in FIG. Sweeping of preset stations is started in the preset order (or vice versa).

Therefore, even when the broadcasting stations are preset in the order shown in FIG. 6, for example, when receiving the FM band C station, only the broadcasting stations A and B preset in the FM band as shown in FIG. 2 are received. Channels are sequentially selected in connection with the operation of the up key 23. Therefore, even if the station a in the AM band is preset in the middle of the preset, this is skipped and the next preset station B in the same FM band is selected.

Next, the preset operation of the broadcasting station and the tuning operation of the preset station will be described with reference to FIG. This processing operation is completed through the flowcharts of FIGS. 3 to 5.

It will be described from FIG. When the common key 21 is pressed, the operation mode is changed to the tuning mode (steps 41 and 42), and the broadcasting station preset mode (hereinafter referred to as memory set mode) is canceled (step 43). When the tuning mode is entered, the state of the band key 22 is detected (steps 44 and 45), the receiving mode corresponding to the band key 22 is entered, and the memory set mode is canceled again (steps 46 and 47).

The reason why the memory set mode is canceled again is that when the tuning mode is immediately selected without operating the common key 21 (steps 41 and 44), the step 43 for canceling the memory set mode is skipped. Because they will.

When the up key 23 is operated after the band key 22 is operated or not operated at all (step 48), the reception frequency is increased by a predetermined frequency unit (eg, 10 KHz unit in the FM band) according to the reception band. (Step 49), when the down key 24 is operated in place of the up key 23, the reception frequency is also decreased in units of 10 KHz (steps 50, 51), and when the specific frequency is reached, the broadcasting station receives the signal. (Step 52). When the broadcasting station is received, the memo reset mode is released (step 53). This is because the operation in the memory set mode has not yet been reached.

Next, when neither the up key 23 nor the down key 24 is operated, or after the memory reset mode is released (steps 48, 50, 53), as shown in the flowchart of FIG. The presence or absence of the memory set mode is checked (step 61).

If the set key 25 is not operated, the mode is transition to step 41 shown in FIG. 3 because it is only the reception mode. However, when the set key 25 is operated, the memory set mode is selected and the preset The number is displayed on the display unit 30 (steps 62 and 63). The initial value of the preset number is "1", and when it is already used, the next smallest unused number is displayed. It is also possible to display the preset number that was previously selected.

When the up key 23 is operated in this state, the preset number is displayed with the preset number being incremented by “1”, and when the down key 24 is operated, the preset number is decremented by “1”. The number is displayed (steps 64, 65, 66, 67).

After that, when the set key 25 is operated, the preset number at that time, the selected reception band and the reception frequency of the received broadcasting station are stored in a predetermined area of the memory 31, and then the memory set is performed. The mode is released (steps 68, 69, 70).

In this way, target broadcast stations are randomly preset. The reason for the randomness is that once preset, the process returns to the initial step 41 again, the reception band is selected again in steps 44 and 45, and then the memory set mode is set.

When neither the up key 23, the down key 24, nor even the set key 25 is operated, the memory set mode has already been released in step 53, so the process immediately returns to the initial step 41.

When neither the tuning mode nor the preset mode is selected in steps 41 and 44 shown in FIG. 3 and the band key 22 is selected, the reception mode of the preset station shown in FIG. 5 is entered.

When the reception band is selected in step 81, the reception band is changed to the corresponding reception band (step 82), and in that state, that is, when neither the up key 23 nor the down key 24 is operated, the preset displayed on the display unit 30. The broadcast station preset to the number is immediately received (steps 83, 84, 87).

However, when the up key 83 is operated here, the preset number is incremented by "1", and it is then checked whether or not the incremented preset number is in the same band (steps 88 and 89). ), If they are in the same band, the broadcasting station in which the preset number is registered is immediately received (step 87).

When the incremented preset number is not within the same band selected in step 81, the increment process for the preset number is performed without shifting to the reception mode (steps 89 and 88), and the same band identical judgment is performed. The process is executed.

For example, as shown in FIG. 6, when FM band broadcasting stations A, B, and C are preset in preset numbers 1 and 3 and 4, and AM band broadcasting station a is preset in preset number 2. When the up key 23 is operated to set the preset number to “2”, skip processing is performed because the band is not in the same band, and the preset number 3 is immediately changed. Since the preset number 3 is the same band, the reception mode is set (steps 88, 89, 87).

In this operation, when the down key 24 is operated, similarly, the decrementing process and the determining process of the same band are performed, and the preset station is received only when it is in the same band (steps 84, 85, 86). , 87). When the reception band is switched from the FM band to the AM band in step 81, the same reception processing and skip processing are performed, and therefore description thereof will be omitted.

Although not shown, when a preset station no longer exists by incrementing the preset number in the same band, a warning to that effect is displayed on the display unit 30. However, the explanation is omitted. The reception band described above is not limited to two bands.

[0039]

[Effect of the device]

 As described above, when receiving the preset stations, the radio receiver according to the present invention can sequentially select only the preset stations within the reception band within the selected reception band regardless of the random preset. It is characterized by the fact that

According to this, even if the broadcast station is preset in a state where different reception bands are mixed, the preset station can be selected while selecting the same band, so that the time until the target station is selected can be increased. It has the feature of being shortened. Furthermore, it is possible to solve the inconvenient problem that a station of another band is suddenly received when selecting a station of the same band.

[Brief description of drawings]

FIG. 1 is a system diagram showing an example of a radio receiver according to the present invention.

FIG. 2 is an explanatory diagram of a tuning operation of a preset station.

FIG. 3 is a flowchart showing an example of a preset station selection processing flow.

FIG. 4 is a flowchart showing an example of a preset station selection processing flow.

FIG. 5 is a flowchart showing an example of a preset station selection processing flow.

FIG. 6 is an explanatory diagram of a conventional tuning operation of a preset station.

[Explanation of symbols]

 10 Radio receiver 13 FM receiver 14 AM receiver 15 Microcomputer 20 Operation panel 30 Display

Claims (1)

[Scope of utility model registration request] 1. A radio receiver capable of randomly presetting each broadcasting station in a plurality of receiving bands regardless of the receiving band, and receiving a preset station, regardless of a random preset, within the selected receiving band. Then, a radio receiver characterized in that only preset stations within the reception band can be sequentially selected.