JPH0229696A - Display system for audio apparatus - Google Patents

Abstract

PURPOSE:To execute a display at a high speed by storing in advance a fixed image part of each display in a display unit memory in accordance with an audio source, and transferring data for specifying a name of the audio source which is operating at present and a variable image part to a display unit. CONSTITUTION:A display controller 14a inputs serial data from a serial data bus 10, generates a fixed image by using fixed image data corresponding to an ID name and stores it in the first screen memory 14e-1, and also, generates a variable image by using variable image data and its attribute data (position, color, etc.) and stores it in the second screen memory 14e-2. A read-out control part 14f synthesizes and outputs the fixed image and the variable image which have been read from the first and the second screen memories and displays them on a display screen 14h of a liquid crystal, etc. Since it sill suffice that only data of the variable image data is transferred from an audio source, the display can be executed at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a display method in an audio 2@ device, and more particularly to a display method that provides a display according to an audio source in operation.

<Prior Art> In an audio system, a display section is provided for each audio source such as a tuner, a CD player, a DAT device, etc., and the operating status of each is displayed on the display section.

<Problems to be Solved by the Invention> However, providing a display section for each audio source increases the overall size and increases costs.

From the above, it is an object of the present invention to provide one audio source common to all audio sources.
An object of the present invention is to provide a display method that includes two display sections and centrally displays the operating status of each audio source on the display section.

Another object of the present invention is to divide the display screen of each audio source into a fixed part and a variable part, store the image data of the fixed part in the memory of the display unit, and transfer only the image data of the variable part from the audio source. To provide a display method that can display a display according to the audio source by simply performing the following steps.

Still another object of the present invention is to provide a non-volatile memory unit in which various fixed images are stored, and to display a wide variety of images by attaching the memory unit with the fixed image according to the user's preference. The aim is to provide a display method that can be used.

Means for Solving the Problems> FIG. 1 is a block diagram of the display system of the present invention.

10 is a serial data bus, 11, 12, 13 are audio sources for unit 1, unit 2, and unit 3, 1
4 is a display unit, 14a is a display controller, 14b is a replaceable ROM card, 14
h is a display screen such as a liquid crystal.

・Function> The various audio sources 11 to 13 and the display unit 14 are connected by the serial data bus 10, and the display of each audio source is divided into a fixed image part and a variable image part, and the fixed image part is replaced by a ROM card. 1
Store it in 4b.

Note that a plurality of ROM cards having different fixed images are prepared, and the user selects a ROM card that suits his/her preference and attaches it to the display unit 14.

The operating unit (audio source) transfers the unit salt and data specifying the variable image portion to the display unit 14 via the serial data bus 10, and the display controller 14a generates the variable image based on these data. At the same time, a fixed image corresponding to the operating unit is read from the ROM card 14b, and these images are combined and displayed on the display screen 14h.

<Embodiment> FIG. 1 is a block diagram of an audio system illustrating a display method according to the present invention.

10 is a serial data bus that can serially transmit data bidirectionally, 11, 12, 13, . . . are C
Audio sources such as D player, DAT device, tuner (unit 1, unit 2, unit 3, etc.), 14
is a display unit for displaying the status of the unit during operation.

As shown in FIG. 2, the serial data bus 10 is composed of two lines terminated at both ends with impedance elements having a predetermined value Zo, and each unit 11, 12, . ...
are driver/receiver circuits 21, 22. having a transmitting driver DV and a receiving receiver RV it.・・・・・・
It is connected to the serial data bus 10 via the serial data bus 10. The serial data output from each unit is transmitted in both directions on the serial data bus 10, disappears at the final end and is not reflected by a terminating resistor), and is taken into another unit, such as a display unit, during the transmission. It has become.

The display unit 14 includes a display controller 14a configured as a computer, a ROM card 14b,
It has a screen memory 14e that stores images to be displayed, a readout control section 14h that reads and outputs images stored in the screen memory, and a display screen 14g such as a liquid crystal display. Note that 14c is a ROM card insertion/ejection port, and 14d is a ROM card receiving part, so that any ROM card can be attached to the display unit.

The ROM card stores (i) image data of a fixed image portion of the display screen of each audio source, and (iii) attribute data such as position and color of a variable image portion (third image data).
(see figure). For example, if the AM tuner is displayed as shown in FIG. 4, the frequency and volume level will be displayed as a variable image part, and the rest will be a fixed image part, so the ROM card 14b will have a display corresponding to the tuner. image data for generating a fixed image (il), and (ii) attribute data such as display position of frequency and volume level, color, etc. Various cards with different fixed images are available.

The screen memo 1J14e has a first screen memory 114e-1 that stores fixed images and a second image memory that stores variable images.

The overall operation of FIG. 1 will be explained below.

RO that has a display pattern that matches the user's preferences in advance
Select the M card 14)) and attach it to the display unit 14.

In such a state, when the power of the audio device is turned on and a predetermined audio source is put into operation, the audio source transmits its own unit salt (ID name) and data specifying the variable image portion to the serial data bus 10. Send according to the format. Figure 5 is an example of data sent from the AM tuner, with ID name (AM)
, volume data (VOL DATA), and a 1-digit to 4-digit frequency value are each expressed in 1 byte and sent to the serial data bus 10.

The display controller 14a takes in the serial data from the serial data bus 10, generates a fixed image using the fixed image data corresponding to the 10 people, and stores it in the first screen memory 14e-1, and also generates a fixed image using the fixed image data corresponding to the 10 people and stores it in the first screen memory 14e-1. A variable image is generated using attribute data (position, color, etc.) and stored in the second screen memory 14e-2.

The readout control unit 14f reads from the first and second screen memories, synthesizes the fixed image and the variable image, outputs the composite image, and displays the composite image on a display screen 14h such as a liquid crystal display.

Thereafter, every time the operating state changes and variable image data is sent from the audio source, the display controller 14a generates only variable images and stores them in the first screen memory 114.
The contents of e-2 are updated to change the display on the display screen 14h.

Also, when the audio source is switched, the ID name and variable image data are sent from the selected audio source in the same way as above, so a fixed image and a variable image are generated in the same way, and the composite image is displayed on the display screen 14h. to be displayed.

In addition, in the above, the fixed image part of each audio source is RO
We have explained the case where multiple ROM cards with different fixed images are stored in the M card, and the desired pattern is displayed by inserting the specified ROM card. (Mekoli may also be made non-replaceable).

Moreover, although the case where a ROM card is used has been described above, the present invention is not limited to a ROM card, and any non-volatile memory may be used.

<Effects of the Invention> According to the present invention, one display unit is provided for all audio sources, the display of each audio source is divided into a fixed image portion and a variable image portion, and the fixed image portion of each display is displayed as an audio source. Data specifying the name of the currently operating audio source and the variable image portion are stored in the memory of the display unit in correspondence with each other, and the operating status of the audio source is displayed by transmitting data specifying the name of the currently operating audio source and the variable image portion to the display unit via the serial data bus. Because of this configuration, the operating status of each audio source can be selectively displayed using one display unit, making it possible to reduce size and cost.Moreover, since only variable image data needs to be transferred from the audio source, high-speed operation is possible. It is now possible to display.

Further, according to the present invention, an RO in which a vast number of fixed images are stored
Since M cards are prepared and a ROM card having a fixed image that suits the user's preference is selected and displayed, a wide variety of displays can be made.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the display system of the present invention, Fig. 2 is an explanatory diagram of the serial data bus, and Fig. 3 is a ROM
An example of data stored on the card, Figure 4 shows the fixed image part and °
FIG. 5 is an explanatory diagram of the variable image portion, and FIG. 5 is an explanatory diagram of data sent from the audio source. 10... Serial data bus, 11.12, 13... Audio source, 14... Display unit, 14a... Display controller, 14b... RO
M card, 14h display screen patent applicant Alpine Co., Ltd. agent Patent attorney Chiki Saito ZZ Figure 3 Figure 4

Claims (2)

[Claims] (1) A serial data bus connects various audio sources and a display unit that displays according to the audio source in operation, and the display of each audio source is divided into a fixed image part and a variable image part, and each display is fixed. The image portion is stored in the memory of the display unit in correspondence with the audio source, and data specifying the currently operating audio source and variable image portion is transferred to the display unit via the serial data bus, and the display unit stores the data that identifies the currently operating audio source and the variable image portion. Along with generating a variable image,
A display method for audio equipment characterized by displaying a composite image of the variable image and a fixed image according to an audio source in operation. (2) The audio device according to claim 1, wherein the memory is configured with a replaceable non-volatile memory unit, and the fixed image of the audio device is changed by replacing the non-volatile memory unit. display method.