JPH01248817A - Presetting type receiver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a preset receiver.

(Summary of the Invention) The present invention provides a preset type receiver that, when a preset number is entered by key, digitally displays the preset number and the preset reception frequency, thereby allowing the preset frequency to be preset without changing the frequency being received. This allows you to check the reception frequency that is being received.

(Prior art) In a preset type receiver, simply by inputting a preset number using the numeric keys and the enter key (execution key), the frequency preset to that preset number can be received. There is.

In FIG. 5, (66) shows an example of the dial display means of such a receiver, which includes, from the left, a band display section (1), a frequency display section (2), and a preset number display section. (3) It has a reception level display section (4) and a mode display section (5) above it.

In FIG. A, the display units (3) to (1) digitally display that "FM broadcasting" of frequency r80MHz J, which is preset to preset number "15", is being received. together with the display section 14)
, +5) to determine the reception level (electric field level) of the broadcast wave.
is "5", indicating that the muting switch is turned on and that the mode is stereo mode.

In such a reception state and display state, Δ,
When the number key, for example, the "2" key is pressed, "2" is displayed as the preset number on the display section (3), as shown in FIG.

When you press the enter key, the preset number "2" will be displayed.
For example, 999kHz of AM broadcasting is preset to
is selected, and the r
AMJ, r999kHzJ, and r2J are displayed, respectively. Also, the reception level at this time is "3"
is displayed, and since the muting switch is disabled during AM reception and the broadcast is monaural, the display section (5) does not display anything.

Therefore, by pressing a number key and the enter key, the reception frequency preset to the number key is selected, and the reception frequency, preset number, etc. are displayed.

In addition, if you press the number key "2" key (Figure B) and then press the number key, for example, the "0" key, the preset number "20" will be displayed as shown in the figure. Next, when the enter key is pressed, the frequency etc. preset to preset number "20" are digitally displayed as shown in FIG.

Also, from the state where the number keys are pressed (B in the same figure), for example, 4
If the next numeric key or enter key is not pressed within seconds, the display returns to the state before the numeric key was pressed, as shown in FIG.

(Problem to be Solved by the Invention) However, in the above case, when a number key is pressed while receiving a certain frequency, as shown in Figure B, the pressed number key (preset number) is displayed, but
The bands and frequencies preset to the number keys are not displayed, and if you want to display these bands and frequencies, you must also press the enter key.

However, when the enter key is pressed, the reception frequency changes from the frequency that has been received up to now to the frequency of the preset number entered by the key, as shown in C or E of the figure.

Therefore, with the above-mentioned receiver, it is not possible to check the preset frequency without changing the reception frequency.

This invention attempts to solve these problems.

[Means to solve the problem]

Therefore, in the present invention, there are provided a number key for inputting a preset number, an enter key, a first detection means for detecting when the number key is pressed, and a first detection means for detecting when the enter key is pressed. a second detection means for detecting this, a memory for storing data regarding reception frequencies corresponding to each of a plurality of different preset numbers, and a display means for digitally displaying the preset numbers and the reception frequencies. and when the numeric key is pressed, based on the detection output of the first detection means, data corresponding to the preset number input by the numeric key among the data stored in the memory. and based on the read data, digitally display the reception frequency preset to the preset number entered by the key and the preset number on the display means, and when the enter key is pressed, The preset receiver receives the frequency corresponding to the read data based on the detection output of the second detection means.

[Effect]

When you press a number key, the reception frequency does not change, but the frequency preset to the corresponding preset number is displayed digitally.

〔Example〕

In Figure 1, (10) points to the t'M receiving system, and (1
1) is the FM tuner circuit, and this tuner circuit (1) is the FM tuner circuit.
1) is configured using an electronic tuning method, that is, by changing the frequency division ratio Nf of the variable frequency divider circuit in the PLL for local oscillation, the FM reception signal of the frequency corresponding to the frequency division ratio Nf is changed to the FM intermediate frequency. It is converted into and output. This FM intermediate frequency signal is then supplied to an FM demodulation circuit (13) through an FM intermediate frequency amplifier (12) to demodulate a stereo composite signal or a monaural signal, and this demodulated signal is sent to a band switching switch circuit (31). is supplied to

Also, (20) shows the AM receiving system, and (20) shows its A
The M chainer circuit is also configured using an electronic tuning method, and outputs an AM intermediate frequency signal of a reception frequency corresponding to the frequency division ratio Na of the variable frequency divider circuit of the PLL. This AM intermediate frequency signal is then supplied to an AM detection circuit (23) through an AM intermediate frequency amplifier (22) to demodulate a monaural signal, and this demodulated signal is supplied to a switch circuit (31).

Then, from the switch circuit (31), the recovery circuit (13
) or (23), and this demodulated signal is supplied to a stereo demodulation path (32) to produce a stereo or monaural audio signal at the left and right channel output terminals (33L).

It is taken out in <3 Susumu>.

Furthermore, (40) shows a microcomputer for system control, and (41) its CPU.

(42) is a ROM in which the program is written.

(43) is a RAM for the work area, (44) is a RAM for preset data, (51) to (55) are input ports and output ports, and (56) is a display drive circuit. 44), (51)~(56
) is connected to the CPU (41) through a system path (49).

In this case, the ROM (42) is also provided with, for example, a flownayat routine (100) shown in FIG.

Further, the RAM (44) is, for example, as shown in FIG.
Data area A1-A2 for 20 stations for presetting
0, and also has a data area Ao for one station for the last channel. These data areas Ai (i=0 to 20) contain band data Bi for distinguishing between FM broadcast and AM broadcast, and reception frequency (tuning frequency) in the tuner circuit (11) or (12). Data N 1 , that is, in this example, data Ni of the frequency division ratio Nf or Na and display data Di for digitally displaying the received frequency are stored (preset) in pairs for each station. .

Also, in area Ao, data Bo, No, and D are stored.

In addition to this, preset number data Po is also stored. Note that the suffixes "1" to "2" of the data area At
0” corresponds to preset numbers “1” to “20”. Although not shown, the power supply of the RAM (44) is banked up.

Furthermore, (61) indicates a keyboard, which has numeric keys and an enter key etc. composed of non-locking type pushbutton switches, and its key output is a board (5
1).

Also, from baud) (52), data B of the reception band is
i and frequency division ratio data Ni are taken out and supplied to the tuner circuit (11) or (21). moreover,
Data Bi of the reception band is taken out from the boat (54), and this data Bi is sent to the switch circuit (31), (
62) as a control signal, and the boat (
A muting signal is also taken out from 54), and this muting signal is supplied to the demodulation circuit (32).

Furthermore, the intermediate frequency signals from the intermediate frequency amplifiers (12) and (22) are supplied to detection circuits (19) and (29), and detection signals indicating the reception levels of the FM broadcast waves and AM broadcast waves are extracted, One of these detection signals is selected by the switch 1Ifl (62), and this selected detection signal is supplied to the boat (53) through the A/D converter (63), and the demodulation circuit (32) outputs the stereo / A mode signal indicating monaural is extracted and supplied to the boat (55).

Further, display data is taken out from the drive circuit (56) and supplied to the dial display means (66) described above. Note that the display means (66) is constituted by, for example, a fluorescent display tube.

In such a configuration, when the power is turned on, the CPL
The processing of I (41) is performed at step (1) of routine (100).
01), and in this step (101), the data Bo, No, Do, Po of the broadcast (last channel) received when the power was last turned off is integrated from the area Ao of the RAM (44). Then, in step (102), data No. is set in the chainer circuit (11) or (21) according to the band data Bo, and the switch circuit (31)
, (62) are connected to the state shown in the figure or the state opposite to that shown, and then in step (103), the data Bo
lDo + Po is supplied to the display means (66) through the drive circuit (56).

Therefore, in steps (102) and (103), the broadcast that was broadcast when the power was turned off last time is received again, and the reception band, reception frequency, and preset number are changed to, for example, FIG. As shown in Figure A), the display section (1) of the display unit (66)
(3) is digitally displayed.

Next, in step (104), the converter (63
) is supplied to the display means (66), and the reception level of the broadcast received in steps (102) and (103) is digitally displayed on the display section (4), and the reception mode at this time is displayed. It is displayed on the display section (5).

Therefore, through the above processing, the receiver is in the state it was in when the power was last turned off.

Then, the processing of the CPU (41) proceeds to step (111), and in this step (11!), the key output of the keyboard (61) (including the output when no key is pressed) is captured, and then In step (112), it is checked whether the key output in step (111) is a numeric key, and if the key output is a key other than a numeric key, the process proceeds from step (112) to step (113) to After processing corresponding to the output is performed, the process returns to step (111).

Therefore, at the regular time, that is, when any broadcast is being received, steps (111) (112) are performed.
), it is waiting for key input.

Then, when the number keys on the keyboard (61) are pressed,
For example, if the "2" key is pressed, this is the step (11
2), the process proceeds from step (112) to step (121), and in this step (121), display data for the "2" key pressed in step (111) is formed, and this display data is supplied to the display means (66), and as shown in FIG.
``2'' is digitally displayed.

Subsequently, in step (122), data B2 and D2 are read from area A2 corresponding to preset number "2" of RAM (44), and this data B21D2 is supplied to display means (66) and displayed in B of the same figure. As shown, the reception band and frequency preset to the preset number r2J, in this case rAMJ and r999kHz j, are digitally displayed on the display sections +1) and (2).

Next, the process proceeds to step (123) where the key output of the keyboard (61) is captured in the same way as Stella and Pu (111), and then in step (124), the key output in step (123) is Is it □
If it is a key other than a numeric key, the process proceeds from step (124) to step (125). In step (125), it is checked whether the key output in step (123) is the enter key, and if the key output is the enter key. Otherwise, the process goes to step (12)
5), proceed to step (131).

Then, in this step (131), step (
121) was last executed for a predetermined period of time, e.g. 4
It is checked whether seconds have elapsed, and if not, the process returns to step (123).

Therefore, after steps (121) and (122) display the new preset number and its frequency as shown in FIG.
3)-(125)2. (131) is repeated to wait for the input of the numeric key or enter key.

Then, in step (123), when the enter key is pressed, this is determined in step (125), and the process proceeds from step (125) to step (141). Area A i% In this case, data B from area A2
2. N2 is read out, and then in step (142), the chainer circuit (11) is read out according to the data B2.
Or, data N2 is set in (21), and
The switch circuits (31), (62) are connected to the state shown or the opposite state as shown, followed by step (143).
), similarly to step (104), data on the reception mode and reception state is supplied to the display means (66) and digitally displayed on the display sections (41, (51)).

Therefore, steps (121) to (125).

(141) to (143), in this case, the reception state is set to the frequency preset to the preset number "2", and as shown in C of the same figure, the display means (66
), the reception band, frequency, preset number, reception status, and reception mode are digitally displayed.

Subsequently, the processing of the CPU (41) proceeds to step (144), where data B2*N2 of preset number "2" is processed.
rD2 and data indicating that the preset number is "2" are written to area AO of RAM (44) as last channel data Bo"Po, and then the process returns to step (111), and from then on, as described above. Waits for key input.

Further, in step (123), for example, when the "0" key is input, this is determined in step (124) and the process proceeds from step (124) to step (121).
) and thus step (121).

(122) as shown in the same figure, the display section 13),
+1).

(2) The preset number "20" and the reception band and frequency preset to this preset number "20", in this case, rAMJ and r 1602kHz
J is displayed digitally.

Then press the "1-0" key followed by the enter key.
Through steps (125) and (141) to (144), the reception state of the broadcast preset to the preset number "20" is established, and this is digitally displayed as shown in FIG.

Furthermore, steps (123) to (125), (1
31), this state changes to 4.
If this continues for seconds, this is determined in step (131), and the process proceeds from step (131) to step (132).
In this step (132), data Bo, Do, and Po (these are data of the broadcast currently being received in step (144)) are read from area Ao of the RAM (44), and these data Bo, , Do
, Po displays the display means (66) in step (133).
The display state is returned to the original state as shown in FIG. 1A, and then the process returns to step (111) to wait for key input again.

In this way, according to the present invention, display or channel selection is performed. In this case, especially according to the present invention, when a preset number is input, the display means (66) displays the fourth preset number without changing the reception frequency. As shown in Figure B or D,
``Since the reception band and reception frequency preset to the preset number can be displayed at the same time as the preset number, the preset contents can be confirmed without changing the reception status.

Furthermore, by pressing the enter key after confirmation, the user can call up the broadcast he or she wants to listen to without making a mistake.

In addition, in the above, the reception band data Bt can also be obtained from the frequency division ratio data Ni or the magnitude of the display frequency Di, and in that case, it is not necessary to store it in the area Ai of the RAM (44). Also, since there is a certain relationship between the frequency division ratio and the reception frequency, the data Ni or D
It is not necessary to memorize one of i, and furthermore, both data N
It is also possible to store common data for i and Di and obtain data Ni and Di from this common data.

Further, although the method of presetting data in the RAM (44) has not been described, this can be done in the same manner as in the past.

(Effects of the Invention) According to this invention, when a preset number is input, the preset number is displayed simultaneously on the indicator 'EIt (66) as shown in @4 Figure B or D, without changing the receiving frequency. Since the reception band and reception frequency preset to that preset number can be displayed, the preset contents can be confirmed without changing the reception status.

Furthermore, by pressing the enter key after confirmation, the user can call up the broadcast he or she wants to listen to without making a mistake.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of an example of the present invention, and FIGS. 2 to 5 are diagrams for explaining the same. (10) is the FM reception system, (20) is the AM reception system, (40
) is a microcomputer, and (66) is a display means.

Claims (1)

[Claims] Numeric keys for inputting a preset number; an enter key; first detection means for detecting when the numeric key is pressed; and first detection means for detecting when the enter key is pressed. Second to detect
, a memory for storing data regarding reception frequencies corresponding to each of a plurality of different preset numbers, and a display means for digitally displaying the preset numbers and the reception frequencies, the number keys is pressed, based on the detection output of the first detection means, reads out data stored in the memory that corresponds to the preset number keyed in using the numeric keys; The reception frequency that is preset to the preset number entered by the key above based on the data entered,
The preset number is digitally displayed on the display means, and when the enter key is pressed, the frequency corresponding to the read data is received based on the detection output of the second detection means. Preset type receiver.