JP3826518B2 - Radio receiver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radio receiver.
[0002]
[Prior art]
There is an IC in which a memory is used as a recording medium for audio signals, and the memory, a recording circuit, and a reproducing circuit are integrated into one chip. Such an IC cannot record a long time like a tape recorder, but is suitable for easily recording a short message or the like like a memo.
[0003]
[Problems to be solved by the invention]
However, if you record a new message without deleting the old message, the new recording will be added to the old recording, that is, the next message will be recorded following the previously recorded message, When multiple messages are recorded, it takes time and effort to find and play the target message from among them.
[0004]
The present invention is intended to improve the operability particularly during reproduction in a radio receiver in which an IC for recording and reproduction as described above is integrated.
[0005]
[Means for Solving the Problems]
  For this reason, in the present invention,
  ReleaseA receiving circuit for receiving transmissions;
  A first memory for storing data of a reception frequency of the reception 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;
  Multiple tuning keys and
  A first operation key;
  A second memory in which audio signals are written and read;
  A second control circuit for controlling an area for writing / reading the audio signal to / from the second memory;
Have
  When one of the channel selection keys is operated when the power of the receiving circuit is on, an area corresponding to the operated channel selection key in the first memory is operated by the first control circuit. Read the received frequency data from
  Supply the read reception frequency data to the reception circuit and set the reception frequency to the reception frequency indicated by the read data.
  When one of the channel selection keys is operated when the receiving circuit is powered off, the second control circuit controls the area corresponding to the operated channel selection key in the second memory. On the other hand, the audio signal is recorded or reproduced by writing or reading the audio signal.Yes,
When the first operation key is operated when the power of the receiving circuit is off, the channel selection key number corresponding to the area of the second memory that is regarded as the audio signal is not written. Display
  Radio receiver
It is what.
  Therefore, the channel selection key functions as a record and playback key, and a plurality of recordings and playbacks thereof are executed independently of other recordings and playbacks.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
By the way, in a synthesizer receiver, generally, a broadcasting station can be preset to a tuning key, and when a tuning key is pressed, a broadcasting station preset to the pressed key can be selected. Has been.
[0007]
In this case, the preset is to write the data of the reception frequency to the memory address corresponding to the channel selection key. The channel selection is realized by reading the data of the reception frequency from the address corresponding to the selected channel selection key and setting the reception frequency with this data. The number of tuning keys is generally about 5-9.
[0008]
Therefore, the channel selection key is used for channel selection when the power source of the receiver is on, but the channel selection key is idle when the power source is off.
[0009]
On the other hand, a recording / reproducing apparatus using an IC is suitable for recording a message or the like as described above.
[0010]
Therefore, in the present invention, when the power of the receiver is turned off, the channel selection key functions as a recording key or a reproduction key. That is, when the first channel selection key is pressed, recording or reproduction is performed in the first area of the memory, and when the second channel selection key is pressed, recording or reproduction is performed in the second area of the memory. , And so on.
[0011]
Hereinafter, an embodiment of the present invention will be described.
[0012]
In FIG. 1, reference numeral 10 denotes an AM / FM receiver, which includes an AM receiver circuit 11 that receives AM broadcasts, an FM receiver circuit 12 that receives FM broadcasts, and a switch circuit 13 for switching bands. Have
[0013]
In this case, the AM receiving circuit 11 includes an antenna input circuit to an AM detection circuit and is configured in a superheterodyne system. Further, the receiving circuit 11 is configured in a synthesizer system, and the oscillation signal of the PLL VCO is used as a local oscillation signal, and the local oscillation frequency is changed by changing the division ratio of the variable frequency dividing circuit of the PLL. Thus, the reception frequency is changed. The receiving circuit 11 outputs the received AM broadcast audio signal.
[0014]
Similarly to the AM receiver circuit 11, the FM receiver circuit 12 is configured in 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 circuit of the PLL. 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 corresponding to the reception band.
[0015]
Reference numeral 20 denotes a recording / reproducing unit, which includes a built-in microphone 21, a microphone amplifier 22, and a recording / reproducing circuit 23.
[0016]
In this case, the recording / reproducing circuit 23 is composed of a single-chip IC. In this example, the recording / reproducing circuit 23 records and reproduces the audio signal as it is without converting it into digital data. It is. For this reason, 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 formation circuit 235.
[0017]
Here, the filter 231 performs anti-aliasing processing on the 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 stores it in each address in order for each sample. At the time of reading, the memory 232 sequentially takes out the samples written therein from each address. Output audio signals. The filter 233 performs a smoothing process on the audio signal extracted from the memory 232.
[0018]
Further, the control circuit 234 controls writing / reading of audio signals to / from the memory 232 and their addresses. When the command RECPWR and address AADR instructing the standby for writing are supplied, the control circuit 234 waits in a state where writing starts from the AADR address of the memory 232, and the command RECD indicating permission for writing is supplied. Then, writing starts from the AADR address.
[0019]
Further, when the command PLAYPWR and the address AADR instructing the waiting for reading are supplied, the control circuit 234 waits in a state in which reading is started from the address AADR of the memory 232, and the command PLAYDD indicating permission of reading is supplied. Then, reading is started from the AADR address.
[0020]
Further, at the time of writing and reading, when writing or reading progresses to the last address of the memory 232, data OVF indicating this is output from the control circuit 234. Further, at the time of reading, when reading proceeds to the last address when writing is performed, data EOM indicating this is output from the control circuit 234.
[0021]
If a command STOP for instructing stop is supplied while writing or reading is being performed on the memory 232, the writing or reading is stopped. Note that the start address AADR for writing to the memory 232 and the end of writing can be arbitrarily set or controlled as described above, so that a plurality of messages (audio signals) can be stored in one memory 232.
[0022]
Further, the control circuit 234 also controls the power supply state of the recording / reproducing circuit 23, that is, the IC 23. When the IC 23 is in the operating state, when the command STOPPWRD is supplied, the control circuit 234 is in a standby state and is almost in the current state. If the command POWERUP is supplied while waiting for the next valid command without consuming the power, the recording or playback (write or read) commands RECPWR and PLAYPWR are executed as described above. Accept.
[0023]
As an IC 23 capable of recording and reproducing as described above, for example, there is an ISD 33000 series IC manufactured by ISD. According to one of the ICs, the sampling frequency when recording an audio signal in the memory 232 is 6.4 kHz, the cutoff frequencies of the filters 231 and 233 are 2.7 kHz, and the recording time is 150 seconds at maximum. 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.
[0024]
Further, reference numeral 30 denotes an audio output circuit, which includes a switch circuit 31 that selectively extracts 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.
[0025]
Reference numeral 40 denotes a microcomputer for system control. In the microcomputer 40, a CPU 41, a ROM 42 in which a program for controlling the receiver is written, a work area RAM 43, an input port 44, an output port 45, and the like are integrated into a single chip.
[0026]
The ROM 42 is provided with a recording / reproducing routine 100 shown in FIGS. 2 and 3, for example, as a part of the program written therein. Details of this routine 100 will be described later.
[0027]
The ROM 42 is provided with a frequency information table FRQT as shown in FIG. That is, if this receiver is for Japan, the entire country of Japan is divided into 14 regions, for example, “Hokkaido” to “Kyushu 2” according to the broadcast reception status. The table FRQT has frequency data of AM broadcast stations and FM broadcast stations that can be received in each divided area. In the table FRQT in FIG. 4, as frequency data, there are frequency division ratios NA1 to NA7 and NF1 to NF7 corresponding to the frequency, for example, for seven stations for each area.
[0028]
Further, in the ROM 42, as shown in FIG. 5, for example, start addresses AADR1 to AADR7 for recording and reproducing audio signals in the memory 232 are prepared corresponding to channel selection keys K1 to K7 described later.
[0029]
Furthermore, a memory 51 is connected to the microcomputer 40 outside. The memory 51 is a ROM capable of electrically erasing and writing data, or a RAM backed up by a battery (not shown), that is, the memory 51 is a non-volatile memory, and a power source Even when the is turned off, the written data can be held. In the memory 51, a data table DTBL is prepared.
[0030]
For example, as shown in FIG. 6, this data table DTBL has seven data areas A1 to A7 corresponding to the seven channel selection keys K1 to K7, and these areas A1 to A7 are divided into AM receiving frequency divisions. The ratios NA1 to NA7, FM reception frequency dividing ratios NF1 to NF7, and recording flags FLG1 to FLG7 are stored one by one. In this case, the frequency division ratios NA1 to NA7 and NF1 to NF7 are stored as reception frequency data for selecting AM broadcast stations and FM broadcast stations preset in the channel selection keys K1 to K7. The recording flags FLG1 to FLG7 indicate the presence / absence of recording of the audio signal, and it is considered that there is no recording when “0” and there is recording when “1”.
[0031]
Further, in FIG. 1, an LCD 52 is connected to the microcomputer 52 as a display for displaying various information such as reception frequency, and various operation keys KPW to KPS and, for example, seven channel selection keys K1 to K7. Is connected. Note that these keys KPW to KPS and K1 to K7 are all constituted by non-lock type push switches, and some keys are used both for radio reception and recording / reproduction.
[0032]
In such a configuration, when the CPU 41 executes the program of the ROM 42, the respective processes and operations are executed as follows.
[0033]
[Power on / off]
Although not shown in the figure, the power source is alternately turned on and off each time the power key KPW among the operation keys KPW to KPS is pressed. 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.
[0034]
[Reception band switching]
This is a case where the reception band is switched between AM broadcast and FM broadcast. In this case, when the receiver is turned on, the band / vacancy search KBS among the keys KPW to KPS is pressed.
[0035]
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 reception band as a result of the switching is displayed on the LCD 52. Data indicating whether the reception band is AM broadcast or FM broadcast is held in the microcomputer 40.
[0036]
Therefore, the reception band can be switched between AM broadcast and FM broadcast by pressing the key KBS.
[0037]
[Channel selection by channel selection key]
This is a case where a preset station similar to the channel selection keys K1 to K7 is selected. In this case, when the receiver is turned on, any channel selection key Ki (any of i = 1 to 7) is selected from the channel selection keys K1 to K7.
[0038]
Then, among the areas A1 to A7 of the data table DTBL, the frequency division ratio NAi or NFi written therein is read out from the area Ai corresponding to the pressed channel selection key Ki in the reception band at this time. It is. The read frequency dividing ratio NAi or NFi is set in the variable frequency dividing circuit of the PLL of the receiving circuit corresponding to the receiving band at this time among the receiving circuits 11 and 12.
[0039]
Therefore, the target broadcast audio signal is taken out from the AM receiver circuit 11 or the FM receiver circuit 12, and this signal is switched from the switch circuit 13 to the state shown in FIG. The signal is supplied to the speaker 33 through 32 signal lines.
[0040]
Therefore, when the tuning keys K1 to K7 are pressed, the broadcasting station preset to the tuning key Ki can be selected and the broadcast can be listened to.
[0041]
[Broadcast station preset]
This is a case where AM broadcast stations and FM broadcast stations are preset to the tuning keys K1 to K7. In this case, when the receiver is powered on, the area / erase key KAE among the keys KPW to KPS is pressed.
[0042]
Then, every time the key KAE is pressed, the area names when the whole country of Japan in the table FRQT is divided into 14 are displayed in order on the LCD 52, and the frequency data of the broadcasting stations that can be received in the displayed area, in this case The frequency division ratios NA1 to NA7 and NF1 to NF7 are read from the table FRQT, and the read frequency division ratios NA1 to NA7 and NF1 to NF7 are written in the areas A1 to A7 of the data table DTBL, respectively.
[0043]
Therefore, simply by selecting a region name including a place where the receiver is used, AM broadcast stations and FM broadcast stations that can be received in the region are preset to the channel selection keys K1 to K7.
[0044]
[Recording audio]
This is a case where voice such as a message is recorded. In this case, when the power of the receiver is off, any one of the tuning keys K1 to K7 is pressed for a long time, for example, 2 seconds or more.
[0045]
That is, when the power is off, the processing of the CPU 41 is waiting for key input in step 101 of the routine 100. However, when any of the keys KPW to KPS and K1 to K7 is pressed, the processing proceeds to step 102. In step 102, the key input in step 101 is determined.
[0046]
In this case, since it is the channel selection key Ki, the process advances from step 102 to step 111, where it is determined whether or not the channel selection key Ki has been pressed for 2 seconds or more. In this case, since it has been pressed for 2 seconds or more, the process proceeds from step 111 to step 112. In this step 112, among the start addresses AADR1 to AADR7 of the memory 232 prepared in the ROM 42 shown in FIG. The start address AADRi corresponding to the pressed channel selection key Ki is acquired.
[0047]
Subsequently, in step 113, the control circuit 234 is instructed to record from the start address AADRi acquired in step 112, and recording is started. That is, the control circuit 234 is first supplied with a command POWERUP to turn on the power, 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 enter a recording standby state from the address AADRi of the memory 232, and then a recording execution command RECD is supplied. Therefore, the recording / reproducing circuit 23 starts recording from the address AADRi of the memory 232.
[0048]
Therefore, at this time, when a message or the like is spoken to the microphone 21, the 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 sample by sample from the address AADRi. That is, it is recorded.
[0049]
During this time, the processing of the CPU 41 proceeds to step 114, where it is determined whether or not a predetermined recording time, for example, 10 seconds has elapsed since the start of recording in step 113. If not, the process proceeds from step 114 to step 115. In this step 115, it is determined whether or not the stop key KPS among the operation keys KPW to KPS is pressed. Processing returns from step 115 to step 114.
[0050]
Therefore, when recording is started in step 113, the recording is continued and the state of the stop key KPS is checked until 10 seconds elapse.
[0051]
Then, if 10 seconds elapses before the stop key KPS is pressed after the start of recording, this is detected by step 114, and the process proceeds from step 114 to step 116. In step 116, the recording end process is executed. Is done. That is, a command STOP for stopping the recording / reproducing operation is supplied to the control circuit 234, 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 final address of the recording is stored in the control circuit 234.
[0052]
Further, if the stop key KPS is pressed during a period in which 10 seconds have not elapsed since the recording was started in step 113, that is, during a period in which steps 114 and 115 are repeated, this is detected in step 115, and the processing is performed. Proceeding from step 115 to step 116, the recording end processing is also executed.
[0053]
Therefore, when 10 seconds have elapsed since the recording was started, the recording is automatically terminated, and when the stop key KPS is pressed before the 10 seconds have elapsed, the recording is terminated at that time.
[0054]
When the recording is completed, the process proceeds from step 116 to step 117. In step 117, the recording flag FLGi of the area Ai corresponding to the tuning key Ki in the data table DTBL is recorded. Set to 1 ″. Thereafter, the process returns to step 101 and again waits for key input.
[0055]
Thus, when any of the channel selection keys K1 to K7 is pressed for 2 seconds or more when the receiver is turned off, recording is performed in the memory area of the memory 232 corresponding to the pressed key Ki. Done. In addition, since recording is performed in the memory area corresponding to the channel selection key Ki as described above, up to seven recordings can be performed independently.
[0056]
[Replay recorded audio]
This is a case where a voice such as a message recorded by [Recording voice] is reproduced. In this case, when the power of the receiver is off, the desired tuning key Ki among the tuning keys K1 to K7 is shortened, for example, with a length of 2 seconds or less.
[0057]
Then, the processing of the CPU 41 waiting for key input in step 101 proceeds to step 111 through step 102. In this case, however, the channel selection key Ki has not been pressed for 2 seconds. Proceeding to 121, in this step 121, it is determined whether or not the flag FLGi corresponding to the pressed channel selection key Ki among the flags FLG1 to FLG7 of the data table DTBL is "1".
[0058]
When FLGi = “1”, since recording is being performed in the area corresponding to the channel selection 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 channel selection key Ki is acquired.
[0059]
Subsequently, in step 123, the control circuit 234 is instructed to reproduce from the start address AADRi acquired in step 122, and reproduction is started. That is, the control circuit 234 is first supplied with a command POWERUP for turning on the power, and the recording / reproducing circuit 23 is changed from the standby state to the operating state. Next, the reproduction standby command PLAYPWR and the start address AADRi acquired in step 122 are obtained. Is supplied to enter a standby state for reproduction from the address AADRi of the memory 232, and then a reproduction execution command PLAYDD is supplied. Therefore, the recording / reproducing circuit 23 starts reproduction from the address AADRi of the memory 232.
[0060]
When the audio signal is reproduced from the memory 232, the audio signal is supplied to the speaker 33 through the signal line of the switch circuit 31 → the amplifier 32 switched to the circuit 23 side at the time of the low-pass filter 233 → reproduction. Therefore, the reproduction of the audio signal recorded from the address AADRi corresponding to the channel selection key Ki in the memory 232 is started.
[0061]
During this time, 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 proceeded to the final address at the time of recording. The Then, when the data EOM is not output, it is a time when a message or the like still continues, so the process proceeds from step 124 to step 125, where it is determined whether or not the stop key KPS is pressed. When not pressed, the process proceeds from step 125 to step 126, where it is determined whether or not the channel selection key Ki has been pressed. When not pressed, the process proceeds from step 126 to step 124. Return.
[0062]
Therefore, when the reproduction is started at step 123, the execution state of the reproduction continues and the processing of steps 124 to 126 is repeated until the reproduction is completed.
[0063]
When reproduction proceeds to the final address at the time of recording, data EOM indicating this is output from the control circuit 234, and this data EOM is detected by step 124. Proceed to 127. 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 then a command STOPPWRD for turning off the power is supplied. Therefore, the recording / reproducing circuit 23 enters a standby state.
[0064]
Then, the process returns to step 101 and waits for key input. Therefore, when the record selected by the channel selection key Ki is reproduced to the end, the receiver automatically enters a standby state.
[0065]
If the stop key KPS is pressed while playback is being performed and steps 124 to 126 are repeated, this is detected in step 125, and the process proceeds from step 125 to step 127 to execute the playback end process. Thereafter, in step 101, the process waits for key input. Therefore, when the stop key KPS is pressed during reproduction, the reproduction ends there, and thereafter the receiver enters a standby state.
[0066]
Further, when the channel selection key Ki is pressed while the reproduction is in progress and steps 124 to 126 are repeated, this is detected in step 126, and the process returns from step 126 to step 121. Therefore, thereafter, the recording in the area corresponding to the channel selection key Ki detected in step 126 in the memory 323 is reproduced.
[0067]
In this case, for example, when the channel selection key K2 is pressed and the channel selection key K2 is pressed, the recorded content of the channel selection key K2 is reproduced from the beginning. Further, for example, when the channel selection key K1 is pressed and playback is performed, when the channel selection key K1 is pressed again, the recorded contents of the channel selection key K1 are again played back from the beginning.
[0068]
Furthermore, when the flag FLGi is “0” in step 121, 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 and supplied to the amplifier 32. The speaker 33 outputs a warning sound “pipi-pi” telling that there is no recording in the memory area corresponding to the channel selection key Ki. Then, the process returns to step 101 and waits for key input.
[0069]
Thus, when a tuning key that has not been recorded is pressed, this is notified by a warning sound.
[0070]
[Free space search]
This is a case where, among the tuning keys K1 to K7, a tuning key that is not recorded in the corresponding memory area, that is, a tuning key that is free of recording is searched for. In this case, the band / empty search key KBS is pressed when the receiver is turned off.
[0071]
Then, the process of the CPU 41 waiting for the key input in step 101 proceeds to step 102. In this case, since the key KBS is used, the process further proceeds from step 102 to step 131.
[0072]
In step 131, by checking the flags FLG1 to FLG8, it is determined whether or not there is an empty area in the memory 232 corresponding to the channel selection keys K1 to K7. Sometimes, the process proceeds from step 131 to step 132, and in this step 132, by checking the flags FLG1 to FLG8, a number indicating an empty memory area, that is, a number indicating an empty channel selection key is displayed on the LCD 52. Is displayed.
[0073]
Subsequently, in step 133, it is determined whether or not the display of step 132 has been executed for a predetermined number of times or for a period of time. If not, the process proceeds from step 133 to step 134. In this step 134, the keys KPW to KPS, It is determined whether any of K1 to K7 has been pressed. If not, the process returns from step 134 to step 132.
[0074]
Thus, thereafter, steps 132 to 134 are repeated, and during this repetition, for example, when the memory areas corresponding to the tuning keys K1, K3, K4, and K6 are vacant, the numbers indicating these tuning keys are: In step 132, 1 → 3 → 4 → 6 → 1 → 3 →... That is, numbers indicating vacant channel selection keys are cyclically displayed for a predetermined time.
[0075]
When the number of vacant channel selection keys is displayed for a predetermined number of times or for a period of time, this is determined in step 133, the process returns from step 133 to step 101, and again waits for key input.
[0076]
If any one of the keys KPW to KPS and K1 to K7 is pressed while steps 132 to 134 are repeated, this is determined by step 134, the process returns from step 134 to step 101, and the key is input again. Wait.
[0077]
In step 131, when none of the memory areas A1 to A7 corresponding to the channel selection keys K1 to K7 is vacant, the process proceeds from step 131 to step 135, and in this step 135, the vacant selection is displayed on the LCD 52. “0” indicating that there is no station key is displayed, and then the process returns to step 101 to wait for key input.
[0078]
Thus, when the band / empty search key KBS is pressed when the receiver is turned off, the tuning keys not recorded in the corresponding memory area among the tuning keys K1 to K7 are displayed in order on the LCD 52. become. When the display is completed, the key input is again waited, or when any key is pressed during the display, the display is ended and the key input is waited.
[0079]
Therefore, when recording is performed by pressing the channel selection key displayed on the LCD 52, the old recording recorded by the channel selection key is not erased by overwriting.
[0080]
[Delete Record]
This is a case where the record of the arbitrary channel selection key Ki (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 pressing the area / erase key KAE.
[0081]
Then, the process of the CPU 41 waiting for the key input in step 101 proceeds to step 102, and in this case, since the keys are KAE and Ki, the process further proceeds from step 102 to step 141.
[0082]
In step 141, the flag FLGi corresponding to the channel selection key Ki pressed together with the area / erase key KAE is reset to "0". Therefore, recording is performed in the memory area corresponding to the channel selection key Ki. In other words, it is assumed that there is no record in the channel selection key Ki, and then the process returns to step 101 to wait for key input again.
[0083]
  [Summary]
  According to this receiver, when any of the channel selection 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. Can be performed independently up to seven. Also during playback, there is no need to select or play multiple records in sequence to find the target record, and one-touch target.messageEtc. can be played. That is, it can be used as if there are seven IC recording / reproducing devices, and recording / reproducing can be organized physically and visually.
[0084]
Furthermore, if the number of keys used for recording and reproduction is too large, the user cannot remember what key was recorded on which key. However, if the tuning key is, for example, about seven as described above, It is also possible to remember which channel selection key was recorded, especially visually, and it is easy to reproduce the target message. Even if you select the wrong channel key, it is easy to find the target record.
[0085]
In addition, when the band / vacancy search key KBS is pressed, the channel selection keys with no recording among the channel selection keys K1 to K7 are displayed in order on the LCD 52, thereby reducing the trouble of overwriting the old record with the new record. Can do.
[0086]
  In addition, most keys used for recording and playback receive broadcasts.RuTherefore, the receiver does not become full of keys and does not hinder downsizing of the receiver.
[0087]
  In the above description, the receiving unit 10 includes the AM receiving circuit 11 and the FM receiving circuit 12. However, the receiving unit 10 may include a TV broadcast sound receiving circuit. In addition, the keys KAE and KBS used when the power is off can be used as long as they are not used when the broadcast is not received.The
TheFurther, in the above description, recording is possible when the channel selection key Ki is pressed for a long time, and playback is possible when the channel selection key is pressed for a short time. For example, when the channel selection key Ki is pressed twice in succession (double-clicking). Recording can be performed, and playback can be performed by briefly pressing once.
[0088]
【The invention's effect】
According to the present invention, when any of the tuning keys is pressed when the power is off, new recording / reproduction can be performed independently of other recording / 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.
[0089]
Furthermore, if the number of keys used for recording and playback is too large, the user cannot remember what key was recorded on which key, but if it is a tuning key, the number is not so large, so It is also possible to remember whether it was recorded in the channel selection key, especially visually, and it is easy to reproduce the target message. Even if you select the wrong channel key, it is easy to find the target record.
[0090]
In addition, a tuning key without recording can be displayed. Furthermore, the receiver does not become full of keys and does not hinder downsizing the receiver.
[Brief description of the drawings]
FIG. 1 is a system diagram showing an embodiment of the present invention.
FIG. 2 is a flowchart showing a part of one embodiment of the present invention.
FIG. 3 is a flowchart showing one mode continued from 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 illustrating one form of a data table.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... AM * FM receiving part, 11 ... AM receiving circuit, 12 ... FM receiving circuit, 20 ... Recording / reproducing part, 21 ... Microphone, 23 ... Recording / reproducing circuit, 30 ... Audio | voice output part, 33 ... Speaker, 40 ... Microcomputer 41 ... CPU, 42 ... ROM, 43 ... RAM, 51 ... memory (for data storage), 52 ... LCD, 53 ... former circuit, 100 ... recording / reproduction routine, 231 ... low pass filter (for anti-aliasing), 232 ... memory (For recording / reproduction) 233 ... low pass filter (for smoothing) 234 ... control circuit, KPW to KPS ... operation keys, K1 to K7 ... tuning keys

Claims (4)

A receiving circuit for receiving broadcasts;
A first memory for storing data of a reception frequency of the reception 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;
Multiple tuning keys and
A first operation key;
A second memory in which audio signals are written and read;
A second control circuit for controlling an area for writing / reading the audio signal to / from the second memory,
When one of the channel selection keys is operated when the power of the receiving circuit is on, an area corresponding to the operated channel selection key in the first memory is operated by the first control circuit. Read the received frequency data from
Supply the read reception frequency data to the reception circuit and set the reception frequency to the reception frequency indicated by the read data.
When one of the channel selection keys is operated when the receiving circuit is powered off, the second control circuit controls the area corresponding to the operated channel selection key in the second memory. For recording or reproducing the audio signal by writing or reading the audio signal,
When the first operation key is operated when the power of the receiving circuit is off, the channel selection key number corresponding to the area of the second memory that is regarded as the audio signal is not written. A radio receiver designed to display The radio receiver according to claim 1,
When one of the channel selection keys is subjected to a first operation when the receiving circuit is powered off, the operated channel selection key in the second memory is controlled by the second control circuit. For the area corresponding to, write the audio signal to record the audio signal,
When one of the channel selection keys is subjected to the second operation when the receiving circuit is powered off, the operated channel selection key in the second memory is controlled by the second control circuit. A radio receiver that reads out the audio signal and reproduces the audio signal in an area corresponding to. The radio receiver according to claim 2,
The first operation is a long press,
A radio receiver in which the second operation is a short press. The radio receiver according to claim 1, claim 2 or claim 3,
A second operation key;
When one of the channel selection keys is operated while operating the second operation key when the receiving circuit is powered off, one of the operated channel selection keys in the second memory. A radio receiver that performs processing to consider that the audio signal in the area corresponding to is erased.

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