JPS61105993A - Acoustic device - Google Patents

Abstract

PURPOSE:To make a switching operating simple by providing a common operat ing unit, an audio unit and a display unit for plural source units such as units for a vehicle and switching the contents of display of a display unit automati cally to display the contents on the operated unit. CONSTITUTION:When the deck selector key of a combined use operation button section 14 in an operating unit 1 is operated, an operation command generating circuit 15 prepares operation on command to a deck unit 3, and at the same time, sends a signal to a picture switching command generating circuit 12. Picture switching command is sent from the picture switching command generating circuit 12 to a display picture switching command decoder 26 through shift registers 13, 25 and decoded to select a display data buffer 22. By this selection, display data from the deck unit 3 is sent to a display unit 21, The operation command generating circuit 15 makes the picture switching command generating circuit 12 send out picture switching command and then send out command which indicated that the operation unit is a deck to an audio unit 5 through the shift register 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention provides a plurality of source units, an operation unit having a common operation input means for the plurality of source units, and an operation unit that inputs audio from the plurality of source units. An audio unit 7 that selectively processes signals, and a display unit that displays operating states of the plurality of source units and the audio unit in a time-sharing manner, and the units are coupled by a bus means so as to be able to communicate with each other. The present invention relates to an audio device.

The recent development of car audio has been remarkable, and a large number of source (sound source) units are now being installed. However, since the living space of a car is limited and very narrow, it is impossible to bring devices that each have an operation input section and a display section into the car. Therefore, it has become possible to enable multiple source units to share an operation input section and a display.

[Technical background of the invention and its problems]

In conventional devices of this kind, when a source unit on the display unit is being displayed, if an operation is to be performed on a unit that is not displayed on the display unit, the unit is displayed before or after the operation. It was necessary to perform an operation to switch to the display and then check the display.

Therefore, when this type of audio device is used in a vehicle, there are safety problems because there are many operations and confirmation operations are required.

[Purpose of the invention]

The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional ones, and if an operation performed on a unit that is not displayed on the display unit is valid, the display for the operated unit will be displayed on the display unit. It is an object of the present invention to provide an audio device that is particularly suitable for use in a vehicle, and which enables easy switching of display contents by automatically switching the display contents.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, 1 is an operation unit, 2 is a display unit, and 3
4 is a deck unit as a source unit, 4 is a tuner unit as another source unit, and 5 is an audio unit. These units are coupled via a common bus 6 so that they can communicate with each other.

The operation unit 1 is connected to a common bus 6, and is connected to a screen selection key 11 for specifying a screen to be displayed on the display unit 2, a screen switching command generation circuit 12 for generating a screen switching command to the display unit 2, and a data a shift register 13 that performs input/output, a dual-purpose operation button section 14 that instructs operations to the deck unit 3, tuner unit 4, and audio unit 5, and an operation command generation circuit that generates operation commands for the target units. 15 and
It has a status coder 6 for decoding status codes from units 3-5.

The display unit 2 includes a display 21 that selectively displays the operating status of the units 3 to 5, and buffers 22 to 24 for display data from each of the deck unit 3, tuner unit 4, and deck unit 5. It has a shift register 25 that receives data from the bus 6, and a display screen switching command decoder 26 that decodes a display screen switching command in the received data.

The deck unit 3 includes a shift register 31 that is connected to the common bus 6 and performs input/output of data, and an operation command decoder 3 that decodes operation commands from the operation unit 1.
2, a deck mechanism 33 that plays the set cassette, and a deck mechanism 33 that plays the set cassette, and a deck mechanism 33 that operates the deck mechanism according to the decoded operation command. a deck mechanism controller 34 that monitors the status of the deck mechanism; a status code generation circuit 35 that generates a status code according to the status of the deck mechanism; and a display data generator that creates display data regarding the status of the deck mechanism. It has a circuit 36.

The tuner unit 4 includes a shift register 41 connected to a common bus 6 for inputting and outputting data, an operation command decoder 42 for decoding operation commands from an operation unit 1, and a tuner unit 4 for selecting a desired station from radio waves received by an antenna 7. A tuner 43 that selects and detects a wave, a tuner controller 44 that controls the tuner 43 using decoded operation commands and monitors its status, and a status code generation circuit 45 that generates a status code depending on the status of the tuner 43. and a display data creation circuit 46 that creates display data regarding the state of the tuner 43.

The audio unit 5 includes a shift register 51 that is connected to a common bus 6 and performs input/output of data, an operation command decoder 52 that decodes operation commands from the operation unit 1, a deck unit 3, and a tuner unit 4.
an audio circuit 53 that processes audio signals from the audio circuit 53 and has a graphics function, etc.; a power amplifier 54 that amplifies the power of the audio signal from the audio circuit 53 and supplies it to the speaker 8; An audio amount controller 55 to control, a display data creation circuit 56 to create display data regarding the control state by the audio amount controller 55, and a status code generation circuit 57 to generate a status code according to the state of the audio circuit 53, etc.
and has.

In the above configuration, when the deck selection key included in the dual-purpose operation button section 14 in the operation unit 1 is operated, the operation command generation circuit 15 generates an operation-on command for the deck unit 3, and the screen switching command generation circuit 12 to send a deck display command to the display unit 2 through the shift register 13. The screen switching command is sent from the screen switching command generating circuit 12 to the display screen switching command decoder 26 via the shift register 25, and is decoded here to select the display data buffer 22.

This selection allows the display data from the deck unit 3 to be sent to the display 21.

The operation command generation circuit 15 causes the screen switching command generation circuit 12 to send a screen switching command, and then sends a command indicating that the operating unit is a deck to the audio unit 5 through the shift register 13, Wait for the completion status code.

The operation on command is passed through a shift register 51, decoded by an operation command decoder 52, and input to an audio amount controller 55.

The controller 55 sets the volume of the audio circuit 53 to a value preset for the deck unit 3 and causes the audio circuit 53 to amplify the audio signal. The audio signal amplified by the audio circuit 53 is then power amplified by the power amplifier 54 and supplied to the speaker 8. The controller 55 also causes the status code generation circuit 57 to generate a status code indicating that the operation command is valid, and sends it to the operation unit 1 through the shift register 51.

The operating unit 1 receives the status code from the audio unit 5 through a shift register 13 and a status decoder 16 . The status decoder 16 that decodes the status code is the operation command generation circuit 1
A command is given to 2 to send a deck operation start command. This deck operation start command is sent to the deck unit 3 through the shift register 13.

The decking unit 3 receives the decking operation start command through a shift register 31 and decodes it with an operation command decoder 32. The deck mechanism controller 34 receives the start signal generated by this decoding from the decoder 32, operates the deck mechanism 33, and
After the status code generation circuit 35 generates and sends a status code indicating that the command has been accepted as valid, the display data generation circuit 36 generates data indicating the current operating state of the deck, and the data is sent to the shift register 31. The data is transmitted to the display unit 2 through the display unit 2.

For example, when the deck is in operation, the FF in the dual-purpose operation button section 14 is pressed.
When a key is operated, an FF command is generated by the operation command generation circuit 15, and this is sent to the deck unit 3 through the shift register 13. The deck unit 3 receives this OFF command through a shift register 31 and decodes it with an operation command decoder 32. Based on this decoded command, the decking mechanism controller 34 controls the decking mechanism to bring it into a fast forward state. The controller 34 also causes the status code generation circuit 35 to send a valid status code for the FF command to the operation unit 1, and then sends the FF status display data of the deck from the display data creation circuit 36 to the display unit 2. let

The audio unit 5 has functions such as graeco. To operate Graeco, press screen designation key 11
Operate to set Graeco.

In response, the screen switching command generation circuit 12 sends an audio display command to the display unit 2 through the shift register 13. This command is sent to the display screen command decoder 26 through the shift register 25 and decoded there.

In response to this decoded command, display data is output from the display data buffer (audio) 24 to the display 21. Then, data from the audio unit 5 is set in the display data buffer (audio) 24 through the shift register 25.

Thereafter, when a graphic operation is performed using the dual-purpose operation button section 14, the operation command generation circuit 12 sends a graphic operation command to the audio unit 5 through the shift register 13. This command is passed through a shift register 51 and decoded by an operation command decoder 52. This decoded command provides instructions regarding the graeco operation to the audio amount controller 55. The controller 55 receives the above instruction and causes the audio circuit 53 to correct the audio signal. This controller 55 also transfers the current grapheco display data from the display data creation circuit 56 to the shift register 5.
1 to the display unit 2.

In order to return the graphic display to the deck information display, it is sufficient to specify the deck screen using the screen designation key 11, and this instruction causes the screen switching command generation circuit 12 to output a deck screen instruction command to the display unit 2. Ru.

However, in consideration of operability in the car, when an operation key such as REV for the deck is operated on the dual-purpose operation button part 14 during the graphic display, the operation command generation circuit 12 is sent to the deck unit 3 through the shift register 13.
Send the REW command to
When the valid status code for the above command is received from , the screen switching command generation circuit 1 is automatically activated.
In contrast, the deck display command is sent to the display unit 2.

With this operation, when a command generated by a user's operation is valid for the target unit, the operating state for that command can be confirmed without operating the screen switching key.

Note that the same data transfer as described above is also performed for the tuner unit 4 and the deck unit 5.

In addition, the data of the above status code is input key valid/
Information such as invalidity information and operation completion is assigned to predetermined bits.

〔Effect of the invention〕

As explained above, according to the present invention, even when the operation by the operation unit is for a unit that is not currently displayed on the display unit, when the operation is effectively accepted by the unit, the display unit displays Since the content is automatically switched to the display of the relevant unit, there is no need to switch the display before or after the operation as in the past, and you can immediately check the display of the content changed by the operation. An extremely useful audio device can be obtained.

[Brief explanation of the drawing]

The drawing is a block diagram showing an embodiment of the device according to the invention. 1... i-made unit, 2... display unit, 3... deck unit, 4...
Tuner unit, 5... Audio unit, 6... Common lotus°.

Claims (1)

[Claims] a plurality of source units; an operation unit having common operation input means for the plurality of source units; an audio unit that selectively processes audio signals from the plurality of source units; In the audio device comprising a display unit that displays the operating status of the audio unit in a time-sharing manner, and in which the units are coupled by a bus means so as to be able to communicate with each other, operations for units not displayed on the display unit are performed. means for determining whether or not the operation is validly accepted by the operation unit when the operation is performed by the operation unit; and means for determining whether the operation is validly accepted by the operation unit; An audio device comprising means for switching to a unit display.