JP3131970B2 - Stereo playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereo reproducing apparatus suitable for application to a combination of, for example, an amplifier, a tuner, a tape deck, a CD player, and the like called a component stereo. .

[Summary of the Invention]

The present invention provides a stereo playback device suitable for component stereos and the like, in which a predetermined key is operated to control each unit in a timer-set state, so that the operation state when the timer is on can be easily confirmed. It was made.

[Conventional technology]

Conventionally, a plurality of audio signal sources such as a tuner a, a tape deck b, a CD player c, and the like, and an amplifier device d as a signal processing unit, as shown in FIG.
A variety of products called component stereos combining left and right speakers e have been commercialized. in this case,
In recent years, each of the signal sources a, b, and c and the amplifier device d are equipped with a control circuit including a microcomputer, and various controls are performed by the microcomputer. For example,
Various controls such as the reception frequency in the tuner a, the tape running of the tape deck b, the reproduction order of the CD player c, and the volume (volume) and function switching in the amplifier device d are performed by microcomputers mounted in respective devices. Like that.

On the other hand, some of such component stereos are provided with a timer function so that a radio broadcast can be automatically received and recorded at a preset time. Since this timer function may be controlled by the microcomputer described above, it can be realized relatively easily.

[Problems to be solved by the invention]

By the way, if the timer function is controlled by the microcomputer, it is possible to freely set the playback state (volume, graphic equalizer adjustment state, etc.) when the timer is turned on. In order to check the volume and sound quality set by the timer function, it is necessary to operate each device after adjusting it to the same state as when the timer was actually set, which is troublesome. Was.

In view of the above, an object of the present invention is to make it possible to easily confirm a state in which a timer is set.

[Means for solving the problem]

As shown in FIG. 1, for example, a stereo reproduction apparatus according to the present invention comprises: a plurality of audio signal sources; an audio signal processing unit for processing and outputting audio signals supplied from the plurality of audio signal sources; And a timer control unit (6) for operating the audio signal processing unit at a preset time, and a state of the audio signal source and the audio signal processing unit set to operate at the time set by the timer control unit (6). A stereo playback device comprising storage means (1a), (2a), and (5a) for storing, wherein a key for checking a time set by a timer control unit (6) is operated, The audio signal source and the audio signal processing unit are controlled to the set state stored in the storage means, and are set to a timer standby state by performing a predetermined operation after this check. A.

[Action]

According to such a configuration, only by operating the predetermined key (10) connected to the timer control unit (6), the audio signal from the timer-set sound source is set in various states such as the set volume and frequency characteristics. It is possible to play back more, and the setting state can be easily confirmed.

〔Example〕

Hereinafter, an embodiment of the stereo reproducing apparatus according to the present invention will be described with reference to FIG.
This will be described with reference to FIGS.

This example is applied to the component stereo as shown in FIG. 8, and the control units of the respective devices are connected via a bus line. That is, in FIG. 1, (1) is a control section of an amplifier device, (2) is a control section of a graphic equalizer, (3) is a control section of a CD player, (4) is a control section of a tape deck, and (5). Indicates the control unit of the tuner,
Each of the control units (1) to (5) is composed of a microcomputer, and each of the control units (1) to (5) is connected via a bus line (9).
(5) is connected. In this case, the amplifier device is provided with a function changeover (input sound changeover) switch, and the control section (1) of this amplifier device also performs function changeover control. The control unit (1) of the amplifier device, the control unit (2) of the graphic equalizer, and the control unit (5) of the tuner have memories (1a), (2a), and (5), respectively.
a) is connected. When a timer set command 1, 2 or 3 described later is supplied via the bus line (9), the memories (1a), (2a) and (5a) are stored in the control units (1), (2), The control state in (5) can be stored together with the command number, and timer operation commands 1, 2, 3 or timer check commands 1, 2, 3 described later are supplied via the bus line (9). When the control state stored together with the corresponding command number is stored in memory (1a), (2a), (5a)
From the control unit (1), (2),
(5) can be reproduced. In the case of the timer check commands 1 to 3 and the timer operation commands 1 and 2, when the function switched by the control unit (1) of the amplifier device is a CD player or a tape deck, the control unit (1) transmits the bus line ( 9) A CD play command or a tape play command is transmitted. Further, when the timer operation command is 3, a tape recording start command is sent from the control unit (1) to the bus line (9), and a CD play command is sent when the function to be switched is a CD player. Also, when the timer operation commands 1 to 3 are supplied, the control unit (5) of the tuner device turns on the power of each circuit of the stereo system. The control unit (5) turns off the power of each circuit.

In this example, a timer control unit (6) is connected to the bus line (9), and a timer setting command and a timer are set by operating a timer setting key (10) connected to the timer control unit (6). The check command is sent to the bus line (9). In this case, the timer setting key (1
As shown in FIG. 2, the first, second, and third timer keys (11), (12), and (13), the next key (15), the up key (16), and the down key Key (17),
A timer check key (18), for example, disposed on the front of the tuner. Then, one of the timer keys (1
1) Press (13) and set the timer start time and end time by operating the next key (15), up key (16) and down key (17) while looking at the display panel provided on the tuner. Then, the timer set command 1, 2 or 3 is sent from the timer control unit (6) to the bus line (9). After pressing the timer check key (18),
By pressing any of the timer keys (11) to (13) within seconds, the timer check command 1, 2 or 3 is transmitted from the timer control unit (6) to the bus line (9). Further, after the timer is set, when the timer start time comes, a timer operation command 1, 2 or 3 is sent from the timer control unit (6) to the bus line (9), and when the timer end time comes, the timer off command is sent to the timer The signal is sent from the control section (6) to the control section (5) of the tuner device. The timer operation (command numbers 1 and 2) set by the first and second timer keys (11) and (12) is an automatic reproduction operation of music or the like from a tuner, a CD player or a tape deck.
The timer operation (command number 3) set by the third timer key (13) is an automatic recording operation on a tape deck of music or the like supplied from a tuner or a CD player.

Further, in the figure, reference numeral (7) denotes a remote control signal light receiving portion. When an infrared signal from a remote commander (not shown) is received by the remote control signal light receiving portion (7), the signal is supplied to a decoder (8). An operation command corresponding to the light receiving signal is transmitted from the decoder (8) to the bus line (9).
Can be sent to

Next, the operation of the stereo reproducing apparatus according to the present embodiment will be described with reference to the flowcharts of FIGS. 3 to 7 focusing on the timer function. First, when this timer function is used, a timer setting operation is performed. Need to do. At the time of this setting, each device constituting the stereo reproducing apparatus is operated to reproduce an audio signal from an arbitrary sound source (for example, a CD player) to be set. In this case, the graphic equalizer is operated to set the frequency characteristics as necessary. In this state, the timer is set by operating the timer setting key (10) connected to the timer control unit (6). That is, as shown in the flowchart of FIG.
Press any one of the timer keys (11) to (13), select the day of the week to operate with the up key (16) and the down key (17) while looking at the display on the tuner display, and then select the next key ( 15) Press to change the display, and then select the start key by using the up key (16) and down key (17)
Press the next key (15) to change the display when the selection is completed. In this way, the day of the week, the start time, the start time, the end time, and the end time are set.
When the setting is completed in this manner, the set command 1, 2 or 3 (corresponding to the keys (11) to (13)) is transmitted from the timer control unit (6) to each device via the bus line (9). You. The day of the week, the start time, and the end time are stored in a memory (not shown) in the timer control unit (6).

Then, in the control units (1), (2) and (5) of the amplifier device, graphic equalizer and tuner, as shown in the flowchart of FIG.
When each of the control units (1), (2) and (5) is received
The control status currently performed by the connected memory (1
a), (2a) and (5a) are stored. At this time,
Command numbers 1, 2 and 3 are also stored at the same time.

The setting is performed in this manner, and the setting is performed for each of the timer keys (11) to (13), so that a maximum of three types of setting can be performed. However, the timer key (13) is a key dedicated to timer recording.

And by setting the timer in this way,
When the set time of the day of the week is reached, the timer operation command 1,
2 or 3 is transmitted from the timer control unit (6) to each device via the bus line (9). Then, the control unit (1) of the amplifier device, the graphic equalizer and the tuner,
In (2) and (5), the timer operation command 1, 2 or 3
When each of the control units (1), (2) and (5) receives
The control data stored together with the corresponding command number 1, 2, or 3 is read out from the connected memories (1a), (2a), and (5a), and the amplifier device and the graphic equalizer are set in a state based on the read out control data. And activate the tuner. When the function switching at this time is a CD player, the control unit (1) of the amplifier device sends the CD player control unit (3) via the bus line (9) to the control unit (3) of the CD player.
A play command is sent, and if it is a tape deck, a tape play command is sent to the control unit (4) of the tape deck via the bus line (9). 4) Send a tape recording start command.

In this manner, when the set disclosure time comes, the reproduction or recording of music or the like from the sound source set under various conditions such as volume and frequency characteristics set at the time of the set operation is automatically performed, and the set end time. When this happens, the playback or recording stops automatically.

Then, in this example, the set contents can be checked at any time after the timer is set and before the set disclosure time is reached. That is, as shown in the flowchart of FIG. 5, within 5 seconds after pressing the timer check key (18), the timer check command 1, 2, or 3 corresponding to the keys (11) to (13) is issued by the timer control unit (6). Is transmitted to each device via the bus line (9). When the control units (2) and (5) of the graphic equalizer and tuner receive the timer check command 1, 2 or 3, as shown in the flowchart of FIG. 6, the control units (2) and (5) Reads the control data stored together with the corresponding command number 1, 2 or 3 from the connected memories (2a) and (5a), and operates the graphic equalizer and the tuner in a state based on the read control data. . At this time, the setting of the equalizing level of each frequency band is displayed on the display unit of the graphic equalizer. In the control unit (1) of the amplifier device, the seventh
As shown in the flowchart of FIG. 3, upon receiving the timer check command 1, 2 or 3, the control unit (1) stores the control data stored together with the corresponding command number 1, 2 or 3 into the connected memory (1a ), Operating the amplifier device in a state based on the read control data,
At this time, it is determined whether or not the function switching is for a CD player or a tape deck. If the function switching is for a CD player, a CD play command is sent to the control section (3) of the CD player via the bus line (9), and If it is a deck, a tape play command is sent to the control unit (4) of the tape deck via the bus line (9). Note that even if the timer check command is 3, the tape recording start command is not sent.

By operating in response to the timer check command in this manner, music or the like is reproduced under the same conditions as when the timer is set. That is, the amplifier device, the graphic equalizer and the tuner are connected to the memories (1a), (2a) and (5a) connected to the respective control units (1), (2) and (5).
Since the operating state at the time of setting is reproduced based on the data stored at the time of setting, for example, the third timer key (13)
When using FM to set the 82.5MHz FM broadcast to be recorded on the tape deck with the low frequency emphasized by the graphic equalizer, just press the timer check key (18) and the timer key (13) at any time. So this 8
A 2.5MHz FM broadcast is played back from the speaker with the same frequency characteristics and the same volume as the set when the low range is emphasized, and played back in the same state as recorded when the timer is running. Can be performed. Then, after confirming the reproduced sound, the stereo apparatus is turned off to be in a standby state until it is operated by the timer. When the timer is checked, the set day of the week, the start time, and the end time are also displayed on the display of the tuner.

Thus, according to this example, the timer check key (18)
Just press one of the timer keys (11) to (13)
Since the state of the timer setting is checked, the key of each device is not operated at all except for the operation of the timer check key (18) and the timer keys (11) to (13). Music and the like can be played back in a set state (frequency characteristics, volume, etc.), and the playback sound can be easily checked with the timer set without performing complicated key operations.

In the above-described embodiment, a memory is provided on the control unit side of each device to store the control content when the timer is operated. For example, the control data of each device is stored in the timer control unit (6). A memory may be provided, and the control content of each device may be stored in the memory. By doing so, for example, by merely providing a backup circuit for the memory only in the memory of the timer control unit (6), it is possible to prevent the contents of the timer set from being lost when the power is turned off.

Further, a timer setting key may be provided on the remote commander side so that the timer can be set and the set contents can be checked from the remote commander.

Furthermore, the present invention is not limited to the above-described embodiment, but may take various other configurations.

〔The invention's effect〕

According to the present invention, the playback is performed in the same state as when the timer is set only by operating a predetermined key, so that the playback is easily performed in the same state as when the timer is set without operating each device (ie, when the timer is activated). This has the advantage that the timer setting status can be easily confirmed. In particular, when the timer can be freely set for the volume and sound quality as in the above-described embodiment, it is difficult to confirm the set contents only by the display, so that the effect of confirming the reproduced sound is great.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a schematic diagram showing a key arrangement of one embodiment, FIG. 3, FIG.
FIG. 6, FIG. 6 and FIG. 7 are flow charts for explaining one embodiment, and FIG. 8 is a front view showing an example of a conventional stereo apparatus. (1), (2), (3), (4) and (5) are control units,
(1a), (2a) and (5a) are memories, (6) is a timer control unit, (9) is a bus line, and (10) is a timer setting key.

Claims (1)

(57) [Claims] A plurality of audio signal sources, an audio signal processing unit for processing and outputting audio signals supplied from the plurality of audio signal sources, and the audio signal source and the audio signal processing unit being preset. A stereo playback device comprising: a timer control unit that operates at a time; and a storage unit that stores states of the audio signal source and the audio signal processing unit that are set to operate at the time set by the timer control unit. When a key for checking the time set by the timer control unit is operated, the audio signal source and the audio signal processing unit are controlled to the setting state stored in the storage unit, and A stereo reproducing apparatus which is set to a timer standby state by performing a predetermined operation after this check.