JPH11136096A - Radio receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability of the addition of an IC recording and reproduction part to a receiver. SOLUTION: A synthesizer receiver is provided with a memory 232 and a control circuit 234 which controls a write and read area for an audio signal to the memory 232. When one of channel selection keys K1 to K7 is operated while the power source of the receiver is OFF, the control circuit 234 writes or reads the audio signal in or out of the area of the memory 232 which corresponds to the operated channel selection key to record or reproduce the audio signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a radio receiver.

[0002]

2. Description of the Related Art There is an IC in which a memory is used as a recording medium for an audio signal, and the memory, a recording circuit and a reproducing circuit are integrated into one chip. Such an IC
Is not suitable for recording long messages like a tape recorder, but it is suitable for easily recording short messages such as memos.

[0003]

However, if a new message is recorded without deleting the old message, the new recording will be added to the old recording.
In other words, the next message is recorded following the previously recorded message. Therefore, if a plurality of messages are recorded, it takes time to search for and reproduce a desired message.

[0004] The present invention provides an I / O for recording and reproduction as described above.
In a radio receiver in which C is integrally incorporated, the operability particularly during reproduction is to be improved.

[0005]

Therefore, according to the present invention, there is provided a receiving circuit configured to receive a broadcast in a synthesizer system, a first memory for storing data of a receiving frequency of the receiving circuit, A first control circuit that reads the data of the reception frequency from the first memory and sets the data in the reception circuit, a plurality of tuning keys, a second memory in which writing / reading of audio signals is performed, And a second control circuit for controlling an area for writing / reading the audio signal to / from the second memory, and when one of the tuning keys is operated when the power supply of the receiving circuit is on, The first control circuit reads out reception frequency data from an area of the first memory corresponding to the operated tuning key, and reads the read reception frequency data. Is supplied to the receiving circuit, the receiving frequency is set to the receiving frequency indicated by the read data, and when one of the tuning keys is operated when the receiving circuit is turned off, The second control circuit writes or reads the audio signal to or from the area corresponding to the operated tuning key in the second memory to record or reproduce the audio signal. Radio receiver. Therefore, the tuning key acts as a recording and reproduction key, and a plurality of recordings and its reproduction are executed independently of other recording and reproduction.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a synthesizer type receiver, a broadcasting station can generally be preset to a tuning key. When the tuning key is pressed, the broadcasting station is preset to the pressed key. You can select a broadcasting station.

In this case, the preset is to write the data of the reception frequency into the address of the memory corresponding to the tuning key. Further, the tuning is realized by reading the data of the reception frequency from the address corresponding to the pressed tuning key and setting the reception frequency by the data. The number of tuning keys is generally 5 to 5.
There are about nine.

Therefore, when the power of the receiver is on, the tuning key is used for tuning, but when the power is off, the tuning key is idle.

On the other hand, a recording / reproducing apparatus using an IC is suitable for recording a message or the like as described above.

Therefore, in the present invention, when the power of the receiver is turned off, the tuning key functions as a recording key or a reproduction key. That is,
When the first tuning key is pressed, recording or reproduction is performed in the first area of the memory, and when the second tuning key is pressed, recording or reproduction is performed in the second area of the memory. , ...

An embodiment of the present invention will be described below.

In FIG. 1, reference numeral 10 denotes an AM / FM receiving unit, which comprises an AM receiving circuit 11 for receiving an AM broadcast, an FM receiving circuit 12 for receiving an FM broadcast, and a band switching switch. And a circuit 13.

In this case, the AM receiving circuit 11 includes the antenna input circuit to the AM detecting circuit and is configured in a superheterodyne system. Further, the receiving circuit 1
Reference numeral 1 denotes a synthesizer system in which an oscillation signal of a PLL VCO is used as a local oscillation signal, and P
By changing the frequency division ratio of the LL variable frequency dividing circuit, the local oscillation frequency changes and the reception frequency changes. The receiving circuit 11 outputs the received audio signal of the AM broadcast.

Similarly to the AM receiving circuit 11, the FM receiving circuit 12 is also constructed of a superheterodyne system and a synthesizer system, and the local oscillation frequency is changed by changing the frequency division ratio of the variable frequency divider of the PLL. The reception frequency is changed, and the received FM broadcast audio signal is output. Then, the audio signal from the AM receiving circuit 11 and the audio signal from the FM receiving circuit 12 are selected and extracted by the switch circuit 13 in accordance with the receiving band.

Further, reference numeral 20 denotes a recording / reproducing section, which has a built-in microphone 21, a microphone amplifier 22, and a recording / reproducing circuit 23.

In this case, the recording / reproducing circuit 23 is constituted by an IC integrated into one chip. In this example, the recording / reproducing circuit 23 records the audio signal as an analog signal without converting it into digital data. It is something to play. For this purpose, the recording / reproducing circuit 23 includes a low-pass filter 231, a memory 232, a low-pass filter 233, a control circuit 234, and a clock forming circuit 235.

The filter 231 performs an anti-aliasing process on an audio signal to be recorded. Further, the memory 232 samples the audio signal from the filter 231 at a predetermined frequency at the time of writing, and sequentially stores the samples at each address for each sample, and at the time of reading, extracts the sample written therein from each address in order. To output an audio signal. The filter 233 performs a smoothing process on the audio signal extracted from the memory 232.

The control circuit 234 further includes a memory 232
And controls the writing and reading of audio signals to and from these addresses. Then, the control circuit 234 issues a command RECPWR for instructing standby for writing.
When the address AADR is supplied, the apparatus waits in a state where writing is started from the AADR address of the memory 232, and when a command RECD indicating permission of writing is supplied, the A
Start writing from ADR address.

When the control circuit 234 receives the command PLAYPWR and the address AADR for instructing the standby of the read, the control circuit 234 waits in a state where the read is started from the address AADR of the memory 232 and the command indicating the permission of the read.
When PLAYDD is supplied, reading starts from the AADR address.

Further, at the time of writing or reading, when writing or reading has progressed to the last address of the memory 232, the data OVF indicating this is output from the control circuit 234. When reading has been performed up to the final address at the time of reading or writing, data EOM indicating this is output from the control circuit 234.

When a command STOP for instructing a stop is supplied while writing or reading to or from the memory 232, the writing or reading is stopped. The start address AADR of writing to the memory 232 and the end of writing can be arbitrarily set or controlled as described above.
Can store a plurality of messages (audio signals).

Further, the control circuit 234 also controls the power supply state of the recording / reproducing circuit 23, that is, the power supply of the IC 23. When the IC 23 is in the operating state and the command STOPPWRD is supplied, the IC 23 enters the standby state. Waits for the next valid command while consuming almost no current, and in this standby state, if the command POWERUP is supplied, the operation state is established, and the recording or reproduction (write or read) command RECPWR is executed as described above. , PLAY
Now accepts PWR.

The IC 23 capable of recording and reproducing data as described above is, for example, ISD3300 manufactured by ISD.
There are 0 series ICs. According to one of the ICs, the sampling frequency when recording the audio signal in the memory 232 is 6.4 kHz, and the filters 231 and 23
The cutoff frequency of 3 is 2.7 kHz and the recording time is up to 15
0 seconds. In the same series of ICs, the memory 232 is a non-volatile memory and does not need to be backed up even when the power is turned off.

Reference numeral 30 denotes an audio output circuit.
It has a switch circuit 31 for selectively extracting an audio signal from the receiving unit 10 and an audio signal from the recording / reproducing unit 20, an amplifier 32, and a speaker 33.

Reference numeral 40 denotes a microcomputer for controlling the system. This microcomputer 40
Are a CPU 41, a ROM 42 in which a program for controlling the receiver is written, and a RAM 4 for a work area.
3. The input port 44, the output port 45, and the like are integrated into one chip.

The ROM 42 is provided with, for example, a recording / reproducing routine 100 shown in FIGS. 2 and 3 as a part of the program written therein. The details of the routine 100 will be described later.

The ROM 42 is provided with a frequency information table FRQT as shown in FIG. 4, for example. That is, if this receiver is for Japan, the whole of Japan is divided into 14 areas, for example, from "Hokkaido" to "Kyushu 2" according to the broadcast reception status. And the table FRQT
Is the AM that can be received in each of the divided areas
It has data on the frequencies of the broadcasting station and the FM broadcasting station. In the table FRQT of FIG.
Frequency division ratios NA1 to NA7, NF1 to NF7 corresponding to the frequency
, For each region, for example, for seven stations.

Further, in the ROM 42, for example, as shown in FIG. 5, start addresses AADR1 to AADR7 for recording and reproducing an audio signal in the memory 232 are prepared corresponding to tuning keys K1 to K7 to be described later. .

Further, the microcomputer 40 includes:
The memory 51 is connected to the outside. The memory 51 is a ROM capable of electrically erasing and writing data, or a RAM (not shown) backed up by a battery.
Reference numeral 1 denotes a non-volatile memory, which can hold written data even when the power is turned off. Then, a data table DTBL is prepared in the memory 51.

This data table DTBL has, for example, as shown in FIG. 6, seven data areas A1 to A7 corresponding to seven tuning keys K1 to K7, and these areas A1 to A7 have AM reception areas. Frequency division ratios NA1 to NA7, F
The frequency division ratios NF1 to NF7 for M reception and the recording flags FLG1 to FLG7 are stored one by one. In this case, the dividing ratios NA1 to NA7, N
F1 to NF7 are A preset to tuning keys K1 to K7.
It is stored as reception frequency data for selecting the M broadcast station and the FM broadcast station. The recording flags FLG1 to FLG7 indicate the presence / absence of recording of an audio signal. When "0", there is no recording, and when "1", it is considered that there is recording.

Further, in FIG. 1, an LCD 52 is connected to the microcomputer 52 as a display for displaying various information such as a reception frequency, and various operation keys KPW to KPS and, for example, seven channel selection keys. K1 to K7 are connected. Note that these keys K
Each of PW to KPS and K1 to K7 is constituted by a non-lock type push switch, and some keys are used for both radio reception and recording / reproduction.

In such a configuration, the CPU 41
By executing the program of OM42, each process and operation are executed as follows.

[Power On / Off] Although the power supply section is not shown, every time the power key KPW of the operation keys KPW to KPS is pressed, the power is turned on and off alternately. When the power is off, the operating voltage is supplied only to the microcomputer 40, and the microcomputer 40 is in a standby state. When the power is on, power is supplied to all circuits, but the recording / reproducing circuit 23 is in a standby state.

[Switching of Reception Band] This is a case where the reception band is switched between AM broadcast and FM broadcast. Then, in this case, when the power of the receiver is on, the band / empty search KBS of the keys KPW to KPS is pressed.

Then, each time the key KBS is pressed, the switch circuit 13 is alternately switched between the AM receiving circuit 11 and the FM receiving circuit 12, and the received band resulting from the switching is displayed on the LCD 52. Further, the microcomputer 40 stores data indicating whether the reception band is an AM broadcast or an FM broadcast.

Therefore, by pressing the key KBS,
The reception band can be switched between AM broadcast and FM broadcast.

[Tuning by Tuning Key] This is a case of selecting a preset broadcasting station similar to the tuning keys K1 to K7. Then, in this case, when the power of the receiver is turned on, any one of the tuning keys Ki (i = 1 to 7) among the tuning keys K1 to K7 is pressed.

Then, the area A1 of the data table DTBL
The division ratio NAi or NFi written therein is read out from the area Ai corresponding to the pressed tuning key Ki in the reception band at this time among A7 to A7.
Then, the read frequency division ratio NAi or NFi is
Of the receiving circuits 11 and 12, it is set to the variable frequency dividing circuit of the PLL of the receiving circuit corresponding to the receiving band at this time.

Therefore, the AM receiving circuit 11 or F
An audio signal of a desired broadcast is extracted from the M receiving circuit 12, and this signal is transmitted from the switch circuit 13 to the speaker 3 through the signal line of the amplifier 32 when the power is on.
3 is supplied.

Therefore, when the tuning keys K1 to K7 are pressed, the broadcasting station preset for the tuning key Ki can be tuned and the broadcast can be heard.

[Preset of Broadcasting Station] This is a case where the AM broadcasting station and the FM broadcasting station are preset to the tuning keys K1 to K7. Then, in this case, when the power of the receiver is on, the area / erase key KAE among the keys KPW to KPS is pressed.

Then, every time the key KAE is pressed, the table
The names of the regions obtained by dividing the whole of Japan into 14 in FRQT are displayed on the LCD 52 in order, and the data of the frequency of the broadcasting station that can be received in the displayed region, in this case,
The division ratios NA1 to NA7 and NF1 to NF7 are read from the table FRQT, and the read division ratios NA1 to NA7 and NF1 to N
F7 is written to each of the areas A1 to A7 of the data table DTBL.

Therefore, only by selecting the area name including the place where the receiver is used, the AM broadcast station and the FM broadcast station which can be received in that area are preset to the tuning keys K1 to K7.

[Recording of Voice] This is a case of recording voice such as a message. In this case, when the power of the receiver is off, any one of the tuning keys Ki to K7 is pressed for a long time, for example, for 2 seconds or more.

That is, when the power is off, the CPU
In the process 41, the process waits for a key input in step 101 of the routine 100, but the keys KPW to KPS, K1 to
If any of K7 is pressed, the process proceeds to step 102, where the key input in step 101 is determined.

In this case, since the channel selection key is Ki, the process proceeds from step 102 to step 111,
In this step 111, it is determined whether or not the tuning key Ki has been pressed for 2 seconds or more. And in this case,
Since the button has been pressed for more than 2 seconds, the process proceeds from step 111 to step 112, and in this step 112,
From among the start addresses AADR1 to AADR7 of the memory 232 prepared in the ROM 42 shown in FIG. 5, the start address AADRi corresponding to the selected tuning key Ki is obtained.

Subsequently, in step 113, the control circuit 234 instructs the start address AAD obtained in step 112
Recording from Ri is instructed, and recording is started. That is, first, a command POWERUP for turning on the power is supplied to the control circuit 234, and the recording / reproducing circuit 23 is changed from the standby state to the operating state. Next, the recording standby command RECPWR and the start address AADRi acquired in step 112 are obtained. Is supplied to set a standby state for recording from the address AADRi of the memory 232, and thereafter, a recording execution command RECD is supplied. Therefore, in the recording / reproducing circuit 23, recording is started from the address AADRi of the memory 232.

Therefore, at this time, the microphone 2
When a message or the like is spoken toward 1, an audio signal from the microphone 21 is supplied to the memory 232 through the amplifier 22 and the low-pass filter 231, and is sequentially written one sample at a time from the address AADRi. That is, it is recorded.

In the meantime, the processing of the CPU 41 proceeds to step 114, in which it is determined whether or not a predetermined recording time, for example, 10 seconds, has elapsed from the start of recording in step 113. If it has not elapsed, the process proceeds from step 114 to step 115. In step 115, it is determined whether or not the stop key KPS among the operation keys KPW to KPS has been pressed. The process returns from step 115 to step 114.

Therefore, when recording is started in step 113, the recording is continued until ten seconds have elapsed, and the state of the stop key KPS is checked.

Then, after the recording is started, the stop key KPS
If 10 seconds have elapsed before is pressed, this is detected in step 114, and the process proceeds from step 114 to step 116, where recording termination processing is executed. That is, the control circuit 234
, A command STOP for stopping the recording / reproducing operation is supplied, and then a command STOPPWRD for turning off the power is supplied. Therefore, the recording / reproducing circuit 23 enters a standby state.
At this time, the last address of the recording is stored in the control circuit 2.
34.

During a period in which 10 seconds have not elapsed since the start of recording in step 113, that is, in a period in which steps 114 and 115 are repeated, the stop key K is set.
When PS is pressed, this is detected in step 115, and the process proceeds from step 115 to step 116,
Again, the recording end processing is executed.

Therefore, when ten seconds have elapsed after the start of recording, the recording is automatically terminated. When the stop key KPS is pressed before the ten seconds have elapsed, the recording is terminated at that point. become.

Then, when the recording is completed, the process proceeds from step 116 to step 117, and this step 11
7, in the data table DTBL, the tuning key Ki
Is set to "1", which indicates that the recording flag FLGi of the area Ai corresponding to. And then
The process returns to step 101 and waits for a key input again.

Thus, when the power of the receiver is off,
When any one of the tuning keys K1 to K7 is pressed for 2 seconds or more, recording is performed in the memory area of the memory 232 corresponding to the pressed key Ki. In addition, since recording is performed in the memory area corresponding to the tuning key Ki in this way, up to seven recordings can be performed independently.

[Reproduction of Recorded Voice] This is a case where voice such as a message recorded by [Record Voice] is reproduced. In this case, when the power of the receiver is off, a desired tuning key Ki among the tuning keys K1 to K7 is pressed for a short time, for example, within 2 seconds.

Then, the processing of the CPU 41 which has been waiting for a key input in the step 101 proceeds to the step 111 through the step 102. In this case, since the channel selection key Ki has not been pressed for 2 seconds, the processing is executed in the step 41. From 111, proceed to step 121, and in this step 121,
It is determined whether the flag FLGi of the flags FLG1 to FLG7 of the data table DTBL corresponding to the selected tuning key Ki is "1".

When FLGi = "1", since recording is being performed in the area corresponding to the tuning key Ki, the process proceeds from step 121 to step 122,
In this step 122, the memory 232 shown in FIG.
Among the start addresses AADR1 to AADR7, the start address AADRi corresponding to the pressed tuning key Ki is obtained.

Subsequently, in step 123, the control circuit 234 instructs the control circuit 234 to start address AAD acquired in step 122.
Playback from Ri is instructed, and playback is started. That is, first, a power-on command POWERUP is supplied to the control circuit 234, and the recording / reproducing circuit 23 is changed from a standby state to an operating state.
In addition, the start address AADRi acquired in step 122 is supplied, and a standby state for reproduction from the address AADRi in the memory 232 is established. Thereafter, a reproduction execution command PLAYDD is supplied. Therefore, in the recording / reproducing circuit 23, reproduction is started from the address AADRi of the memory 232.

When the audio signal is reproduced from the memory 232, the audio signal is supplied to the speaker 33 through the low-pass filter 233 → the switch circuit 31 which is switched to the circuit 23 side at the time of reproduction → the signal line of the amplifier 32. Is done. Therefore, the memory 23
2, the reproduction of the audio signal recorded from the address AADRi corresponding to the tuning key Ki is started.

In the meantime, the processing of the CPU 41 proceeds to step 124. In this step 124, it is determined whether or not the control circuit 234 has output data EOM indicating that the reproduction has progressed to the final address at the time of recording. Is determined. And when the data EOM is not output, the message etc. still continues,
The process proceeds from step 124 to step 125, where it is determined whether the stop key KPS has been pressed. If not, the process proceeds from step 125 to step 126,
In this step 126, it is determined whether or not the tuning key Ki has been pressed. If not, the process returns from step 126 to step 124.

Therefore, when the reproduction is started in step 123, the execution state of the reproduction is continued, and the processing of steps 124 to 126 is repeated until the reproduction is completed.

When reproduction proceeds to the last address at the time of recording, at this time, data EOM indicating this is output from the control circuit 234 and this data EO is output.
M is detected in step 124, and the process proceeds to step 1
From 24, the process proceeds to a step 127. Then, in step 127, a reproduction end process is executed. That is, a command STOP for stopping the recording / reproducing operation is supplied to the control circuit 234, and a command ST for turning off the power is next supplied.
OPPWRD is supplied. Therefore, the recording / reproducing circuit 23 enters a standby state.

Then, the process returns to step 101 and waits for a key input. Therefore, the tuning key Ki
When the recording selected in is played back to the end, the receiver automatically enters the standby state.

During reproduction, steps 124 to 1
If the stop key KPS is pressed while step 26 is repeated, this is detected in step 125, and the processing proceeds from step 125 to step 127, where the reproduction end processing is executed. Becomes Therefore, when the stop key KPS is pressed during the reproduction, the reproduction is terminated there, and thereafter, the receiver enters a standby state.

Further, during reproduction, steps 124 to
If the tuning key Ki is pressed when 126 is repeated, this is detected in step 126, and the process returns from step 126 to step 121. Therefore, thereafter, the recording in the area of the memory 323 corresponding to the tuning key Ki detected in step 126 is reproduced.

In this case, for example, while the reproduction is being performed by pressing the tuning key K1, when the tuning key K2 is pressed, the recorded contents of the tuning key K2 are reproduced from the beginning. Further, for example, when the tuning key K1 is pressed and the reproduction is performed, when the tuning key K1 is pressed again, the recorded content of the tuning key K1 is reproduced again from the beginning.

Further, at step 121, the flag
When FLGi is "0", the process proceeds from step 121 to step 128. In this step 128, the forming circuit 53 is driven to form an error sound signal, which is supplied to the amplifier 32. A beep sound is output to notify that there is no record in the memory area corresponding to the station key Ki. Then, the process returns to step 101 and waits for a key input.

Thus, when a tuning key for which recording has not been performed is pressed, this is notified by a warning sound.

[Search of Free Area] This is a case of searching for a tuning key that has not been recorded in the corresponding memory area, that is, a tuning key that has a vacant recording among the tuning keys K1 to K7. is there. In this case, when the power of the receiver is off, the band / empty search key KBS is pressed.

Then, the process of the CPU 41 waiting for a key input in step 101 proceeds to step 102. In this case, since the key is the key KBS, the process further proceeds from step 102 to step 131.

In this step 131, the flags FLG1 to FLG8 are checked, and
2, it is determined whether or not there is an empty area in the area corresponding to the tuning keys K1 to K7.
And in this step 132, the flags FLG1 to FLG
By checking G8, a number indicating a vacant memory area, that is, a number indicating a vacant tuning key is displayed on the LCD 52.

Subsequently, in step 133, it is determined whether or not the display in step 132 has been executed a predetermined number of times or for a predetermined period. If not, the process proceeds from step 133 to step 134, and in this step 134, the key KPW It is determined whether any one of .about.KPS and K1 .about.K7 has been pressed. If not, the process returns from step 134 to step 132.

Thus, thereafter, steps 132 to 134
During this repetition, for example, when the memory area corresponding to the tuning keys K1, K3, K4, K6 is vacant, the numbers indicating these tuning keys are changed from 1 → 3 → by step 132. 4 → 6 → 1 → 3 →
It is displayed as ... That is, the numbers indicating the vacant channel selection keys are displayed cyclically at predetermined time intervals.

When the number of the vacant tuning key is displayed for a predetermined number of times or for a predetermined period, this is displayed in step 13.
3, the process returns from step 133 to step 101, and waits for a key input again.

If any of the keys KPW to KPS and K1 to K7 is pressed while steps 132 to 134 are repeated, this is determined in step 134,
The process returns from step 134 to step 101, and waits for a key input again.

If it is determined in step 131 that none of the memory areas A1 to A7 corresponding to the tuning keys K1 to K7 is free, the process proceeds from step 131 to step 135.
"0" indicating that there is no vacant tuning key in D52
Is displayed, and then the process returns to step 101 to wait for a key input.

Thus, when the power of the receiver is off,
When band / empty search key KBS is pressed, tuning key K1 ~
Of the K7, channel selection keys not recorded in the corresponding memory area are sequentially displayed on the LCD 52. And
When the display is completed, the display waits for a key input again, or when any key is pressed during the display, the display is ended there and the display also waits for a key input.

Therefore, when recording is performed by pressing the tuning key displayed on the LCD 52, the old record recorded by the tuning key is not erased by overwriting.

[Erase of Recording] This is an arbitrary tuning key K
This is the case where the record of i (the record of the corresponding memory area) is deleted. In this case, when the power of the receiver is off, the channel selection key Ki is pressed while the area / erase key KAE is pressed.

Then, the processing of the CPU 41 waiting for a key input in step 101 proceeds to step 102. In this case, since the keys are the keys KAE and Ki, the processing further proceeds from step 102 to step 141.

Then, in this step 141, the flag FLGi corresponding to the tuning key Ki pressed together with the area / erase key KAE is reset to "0", so that the memory area corresponding to the tuning key Ki is reset. Is regarded as having no record, that is, the tuning key Ki is regarded as having no record. Thereafter, the process returns to step 101 to wait for a key input again.

[Summary] According to this receiver, when any one of the tuning keys K1 to K7 is pressed while the power is off, recording and reproduction are performed on the memory area corresponding to the pressed key Ki. Is performed, up to seven recordings can be performed independently. Also, at the time of reproduction, there is no need to find or select a target record by sequentially selecting or reproducing a plurality of records, and a target MS or the like can be reproduced with one touch. In other words, it can be used as if there are seven IC recording / reproducing devices, and the recording / reproducing can be organized physically and visually.

Further, if the number of keys used for recording and reproduction is too large, the user will not be able to remember what key is recorded in which key. Therefore, it is possible to remember what is recorded on which tuning key, and particularly visually, and it is easy to reproduce a target message or the like. Even if the wrong key is selected, it is easy to find the desired record.

When the band / empty search key KBS is pressed, the non-recording tuning keys among the tuning keys K1 to K7 are sequentially displayed on the LCD 52, so that the old recording is overwritten with the new recording. Can be reduced.

Further, since most of the keys used for recording and reproduction are also used as keys for receiving broadcasts, the receiver does not become full of keys and does not hinder miniaturization of the receiver. .

Note that, in the above description, the receiving unit 10
In this case, the receiving circuit 11 and the FM receiving circuit 12 are provided. However, the receiving circuit 11 may have a TV broadcast audio receiving circuit. The keys KAE and KBS used when the power is off
May be any other key that is not used when no broadcast is received. Furthermore, in the above description, it is assumed that recording can be performed by pressing the tuning key Ki for a long time, and that reproduction can be performed by pressing the key shortly.
If you press i twice shortly (double-click),
Recording can be performed, and once a short press, playback can be performed.

[0088]

According to the present invention, when any one of the channel selection keys is pressed when the power is off, new recording and reproduction can be performed independently of other recording and reproduction. Further, it is not necessary to select or reproduce a plurality of records in order to find a target record, and a target message or the like can be reproduced with one touch.

Further, if the number of keys used for recording and reproduction is too large, the user cannot remember what key was recorded in which key. However, if the number of keys is selected, the number is not so large. It is possible to remember what is recorded on which tuning key, and particularly visually, and it is easy to reproduce a target message or the like.
Even if the wrong key is selected, it is easy to find the desired record.

Further, a tuning key without recording can be displayed. Furthermore, the receiver does not become full of keys and does not hinder downsizing of the receiver.

[Brief description of the drawings]

FIG. 1 is a system diagram illustrating one embodiment of the present invention.

FIG. 2 is a flowchart showing a part of one embodiment of the present invention.

FIG. 3 is a flow chart showing a continuation of FIG. 2;

FIG. 4 is a diagram showing one form of a data table.

FIG. 5 is a diagram showing one form of a data table.

FIG. 6 is a diagram showing one form of a data table.

[Explanation of symbols]

10 AM / FM receiver, 11 AM receiver circuit, 12
FM receiving circuit, 20: recording / reproducing unit, 21: microphone, 23: recording / reproducing circuit, 30: audio output unit, 33: speaker, 40: microcomputer, 41: CPU,
42 ROM, 43 RAM, 51 memory (for storing data), 52 LCD, 53 forming circuit, 100 recording / reproducing routine, 231 low-pass filter (for anti-aliasing), 232 memory (for recording / reproducing) , 23
3: low-pass filter (for smoothing), 234: control circuit,
KPW to KPS: Operation keys, K1 to K7: Tuning keys

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masateru Ohara 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation

Claims (5)

[Claims] 1. A receiving circuit configured to receive a broadcast by using a synthesizer method, a first memory storing data of a receiving frequency of the receiving circuit, and reading data of the receiving frequency from the first memory. A first control circuit to be set in the receiving circuit, a plurality of tuning keys, a second memory in which writing / reading of audio signals is performed, and a writing / reading of the audio signals in / from the second memory. A second control circuit for controlling an area, wherein when the power supply of the receiving circuit is on, one of the tuning keys is selected.
When one is operated, by the first control circuit,
In the first memory, data of a reception frequency is read from an area corresponding to the operated tuning key, and the data of the read reception frequency is supplied to the reception circuit, and a reception frequency of the read data is read. When the power of the receiving circuit is turned off, one of the tuning keys is set.
When one is operated, by the second control circuit,
A radio receiver in which writing or reading of the audio signal is performed in an area corresponding to the operated tuning key in the second memory to record or reproduce the audio signal. 2. The radio receiver according to claim 1, wherein when the power of the receiving circuit is off, one of the tuning keys is selected.
When the first operation is performed, the second control circuit writes the audio signal to an area of the second memory corresponding to the operated tuning key, and When an audio signal is recorded and the power of the receiving circuit is turned off, one of the tuning keys is selected.
When the second operation is performed, the audio signal is read out from the second memory by reading the audio signal from the area corresponding to the operated tuning key in the second memory. A radio receiver that plays audio signals. 3. The radio receiver according to claim 2, wherein said first operation is a long press, and said second operation is a short press. 4. A radio receiver according to claim 1, further comprising a display element, wherein the first radio receiver is used for receiving a broadcast when a power supply of the receiving circuit is turned off. A radio receiver in which, when a key is operated, the number of a tuning key corresponding to an area in which the audio signal is not written in the second memory is displayed on the display element. 5. The radio receiver according to claim 1, wherein the second key used for receiving a broadcast is provided when the power of the receiving circuit is off. When one of the tuning keys is operated while being operated, a process for assuming that the audio signal in the area corresponding to the operated one tuning key in the second memory is deleted. Radio receiver to do.