JPH04325322A - Display device - Google Patents

Abstract

PURPOSE:To provide a display device which uses no narrow instrument panel, prevents forward inattention during a drive, allows a driver to surely observe the display of electronic apparatuses, and can be easily inputted with software. CONSTITUTION:The image display region 13A of a display device is projected on the front glass 6 of a vehicle such as an automobile, and an input operating means 30 is provided on the image display region 13A.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a vehicle such as an automobile, and more particularly to a display device in which the display device also serves as an input operation means and the display/input operation means is disposed on the windshield of the vehicle.

0002

[Prior Art] Conventional display devices for vehicles such as automobiles generally display the indicated values of instruments such as speedometers, tachometers, and gauges in analog or digital form. The device is an LED (Li
ght Emitting Diode), VFD (V
Accum Fluorescent Displry
) etc. are used. However, CR does not apply to map displays on navigation devices or interactive display operations between the driver and the display screen on a CD-I player.
T (Cathode Ray Tube), LCD (L
iquid Crystal Display), etc. are used.

[0003] Hereinafter, as a conventional automobile display device, C
A display device used in a D-I player will be explained. CD-I (Compact Disk-Intera
Focusing on the characteristics of CDs, such as their small size, large storage capacity, ease of random access, and suitability for mass productivity, ``ctive'' combines audio data, image data, and computer program-related data onto a single CD. Store, C
In addition to playing the CD on a D-I player, the user can easily access the information recorded on the CD using a pointing device.

FIG. 9 shows a schematic configuration of such a CD-I player. In the figure, 1 shows the overall configuration of a standard player, and 1a shows a CD or CD-I disc 15.
1b is a controller that controls the audio processor 1c, and 1d is a controller 6 capable of high-speed processing for real-time processing of audio data, etc.
8000 series CPU, 1e is a video processor,
Audio output is output from the audio processor 1c to the speaker 4.

[0005] CD-RTOS that handles various files
(Renl Time Operating System
m) is built into the ROM 1f based on OS-9. 1g is RAM, L from the video processor
Video output is taken out to a display device 13 such as a CD.

Two trigger keys 10A and 10B and an XY device 11 are used as the input device 30.

When the above-mentioned CD-I standard player 1 is installed in a car or the like, the above-mentioned display device is placed in parallel with various instruments arranged under the dashboard in front of the driver's seat. Various operation signals displayed on the vehicle are controlled by a remote controller or an input device located under the dashboard.

[0008]

[Problems to be Solved by the Invention] As mentioned above, the display device is often mounted on the instrument panel installed in front of the driver's seat so that the driver can easily see it, but in recent years, the display device has been installed in the center of the steering wheel so that the driver can easily see the display device. Since a protective air bag and the like are incorporated, the display area of the instrument panel is also limited, and it is desired that the display device be made thinner.

The present invention has been made to provide a display device that can meet the above-mentioned needs.The purpose of the present invention is to provide a display device not in a narrow area on the instrument panel but on the windshield so that the display device can be installed on the windshield. The present invention is intended to provide a display device in which restrictions on mounting on a management panel are relaxed.

0010

[Means for Solving the Problems] The display device of the present invention, as examples thereof are shown in FIGS. The image is displayed on 6 parts of the windshield of the vehicle, and the 6 parts of the windshield are used as a touch panel for input operation means 3.
It is also used as 0.

[0011]

[Operation] Since the display device of the present invention uses the windshield 6 in front of the driver as a display portion and an input portion, it is advantageous that there is no need to provide a display device or an input device on the instrument panel 9. space can be used effectively.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS A display device of the present invention applied to a CD-I standard player will be described below with reference to the drawings.

The display device of this example is a CD to which the present invention is applied.
-I discs, discs containing a mixture of CD-I discs and audio discs, and ordinary audio discs, that is, CDs, can be played, but in this example, the format of CD-I will be explained.

The data structure of CD-I is Form 1 and Form 2.
It is compatible with CD-ROM modes 1 and 2. These forms can be specified for each block or can be mixed on one disk as described above. The difference between the CD-I format and the CD-ROM format is that an 8-byte subheader is provided at the beginning of the user data (2048 bytes), and this subheader contains each block that stores audio, images, and data. is time-division multiplexed. In order to process these in real time, necessary data is written in duplicate and stored. This subheader contains file number FNO, channel number CHNO, submode SM, and data type DTY.
It consists of four items.

Each of the above formats will be explained with reference to FIG. In form 1, as shown in Figure 8A, a sink (12 bytes) SY is provided at the beginning, followed by a header (4 bytes) HE, and further a subheader (8 bytes) S.
HE is provided. After this, user data (2048
byte) UD1 is provided, and this includes an error detection code (4 bytes) EDC and a P parity (17 bytes) for error correction.
2 bytes) P, Q parity (104 bytes) Q is added. Form 1 has improved error correction capability, and is suitable for handling data such as character data and program data in which errors cannot be interpolated.

FIG. 8B shows the structure of Form 2. In form 2, a sink (12 bytes) SY is provided at the beginning, followed by a header (4 bytes) HE,
Furthermore, a subheader (8 bytes) SHE is provided. After this, user data (2324 bytes) UD2 is provided, and a reserve area (4 bytes) RE is provided. This form 2 is suitable for handling interpolable data such as audio data and video data.

The subheader SHE added to the beginning of user data includes a file number (2 bytes) FNO and a channel number (2 bytes), as shown in FIG. 8C.
It consists of CHNO, submode (2 bytes) SM, and data type (2 bytes) DTY.

CD-I discs have external diameter dimensions, central hole dimensions, mechanical dimensions such as thickness, optical parameters such as refractive index and reflectance, disc rotation method, recording linear velocity, track shape,
Recording parameters such as track pitch, usage environment, etc. are all the same as a normal CD for music.

Although writing of audio data will not be explained, video data is processed according to the type of image data. That is, in the case of a natural image, the sampling frequency of the luminance signal Y is 7.6MH2, and the color difference signal U
, V sampling frequency is 3.8MHz, 4:
Sampled at a ratio of 2:2. Then, each bit is compressed to 4 bits and recorded, and when reproduced, it is made into 8 bits.

In the case of graphics, a CLUT (color lookup table) is used. CLUT graphics are 256 colors (8 bits), 128 colors (7 bits)
There are three modes: 16 colors (4 bits) and 16 colors (4 bits).
You can select and use the color you need from 16 million colors.

[0021] In the case of animation, run-length codes are used. This compresses image data using color information and the length between pixels. You can use this code to create full-screen animations.

FIG. 7 shows a system diagram when the display device of the present invention is applied to a CD-I standard player. In FIG. 5, a CD-I disk 15 is rotated by a spindle motor 21 at CLV (constant linear velocity). The rotation of the spindle motor 21 is controlled by a spindle servo circuit 22 based on a clock reproduced by a CD reproduction circuit 28. In addition, spindle servo circuit 2
2 is supplied with the output of the system controller 20.

The recorded signal on the CD-I disc 15 is reproduced by the optical head 23. Optical head 23 is supported by a two-axis device. The output of the focus/tracking servo circuit 25 is supplied to this two-axis device. The output of the system controller 20 is supplied to the focus/tracking servo circuit 25 . focus·
A tracking servo circuit 25 applies servo to the optical head 23 in two axes, the focusing direction and the tracking direction, based on the output of the photodetector.

The optical head 23 also has a slide feed mechanism 24 using a linear motor, for example, to read the CD-I.
The disc 15 is movable in the radial direction. This slide feed mechanism 24 is controlled by a feed servo circuit 26. The feed servo circuit 26 includes a system controller 2.
An output of 0 is provided. This slide feed mechanism 24 allows the optical head 23 to access a desired track position.

The output of the optical head 23 is supplied to a CD reproducing circuit 28 via an RF amplifier 27. The CD reproducing circuit 28 includes a bit clock reproducing circuit, an EFM demodulating circuit,
It consists of a CIRC error correction circuit, etc. In the CD playback circuit 28, the output of the optical head 23 is EFM demodulated and subjected to error correction processing. This CD playback circuit 28 is controlled by the system controller 20.

The output of the CD playback circuit 28 is transmitted to the signal processing circuit 2.
9. The signal processing circuit 29 includes a sync detection circuit, a descrambling circuit, an error correction circuit, and the like. A sync is detected by the CD reproducing circuit 28, and the scrambler is released. Then, the header address is checked and the target block is accessed. In the case of Form 1, error correction processing is further performed. This signal processing circuit 29 is controlled by the system controller 20.

The system controller 20 receives input from the input operation means 30, which will be described later, and is composed of a touch panel formed on the windshield, and includes at least two trigger keys 10A, 10B and an X-Y device 11. has.

31 is a CPU for controlling the CD-I system. As the CPU 31, a 68000 series CPU is used. A master controller 32 is connected to the CPU 31 . Further, the CPU 31 and the system controller 20 are bidirectionally connected. CPU31
A bus 33 is derived from. Note that the CPU 31 and the master controller 31 may be integrated into one chip.

The data reproduced by the signal processing circuit 29 is
Sent to bus 33. The bus 33 includes RAMs 35A and 35 via video controllers 34A and 34B, respectively.
B is connected. The bus 33 also includes a system ROM.
36. A non-volatile RAM 37 for backup is bidirectionally connected. Further, an audio decoder 38 is connected to the bus 33.

Of the data reproduced by the signal processing circuit 29, image data is supplied to video controllers 34A and 34B under the control of the CPU 31. Video controllers 34A and 34B form a video signal based on this image data.

This video signal is transmitted to the video synthesizer 3.
9. A video synthesizer 39 synthesizes the video signal from the video controller 34A and the video signal from the video controller 34B. The output of this video synthesizer 39 is supplied to the above-mentioned LCD 13 via an LCD drive circuit 40. The LCD 13 is of a projection type, and a projected image is projected onto the windshield 6.

Audio data of the data reproduced by the signal processing circuit 29 is supplied to an audio decoder 38 under the control of the CPU 31. Among the four modes of audio data, for example, in the case of ADPCM,
The audio decoder 38 decodes ADPCM. The decoded audio data is supplied to the D/A converter 41 and supplied to an analog signal. The signal is then output from the headphone output terminal 3 via the low-pass filter 42 and amplifier 43.

The specific structure and operation of this example in the above structure will be explained using FIGS. 1 to 6.

As shown in FIG. 1, the above-mentioned CD-I standard player 1 of the present invention is installed at a predetermined position on, for example, an instrument panel 9 below a dashboard 7 provided in front of the driver's seat of an automobile. The CD-I disc 15 is inserted from the disc insertion slot 8.

The display screen 13A in this example is the dashboard 7.
The image is projected from an LCD 13 disposed on the lower side of the vehicle to a position where it does not interfere with driving on the windshield 6 of the automobile.

FIG. 2 is a cross-sectional view of the main part of the driver's seat portion of the LCD 13 of this example as seen from the lateral direction. A projection image is projected onto the windshield 6 from a projection type LCD 13.

FIG. 3 shows an example of the optical system of the color projection type LCD 13. In the figure, 50 is a light source, 51 is a total reflection mirror, 52 is a red dichroic mirror, 53 and 55 are blue dichroic mirrors, 54 and 55 are total reflection mirrors, 56 is a green dichroic mirror, 57, 58, 59
are R, B, and G liquid crystal panels, respectively, using TFT (Thin Fi)
LM Transistor). 80
, 81 and 82 are condenser lenses arranged opposite to the R, B, and G liquid crystal panels, and 83 is a projection lens.

In the projection type LCD 13 described above, the light emitted from the light source 50 is separated into three primary colors R, G, and B by the dichroic mirrors 52, 53, and 54, and then transmitted to the TFT-LCDs 57, 58, and 5.
9 and then the dichroic mirrors 55, 56 again.
are combined and projected onto the windshield 6 in front of the driver of the automobile via the projection lens 63.

Furthermore, the display screen area 13A of the windshield 6 on which the image of this example is displayed has a touch panel configuration. This method is implemented, for example, as shown in FIG. In FIG. 4, 61 is a film electrode, and 62 is a windshield electrode. and a transparent electrode 65 such as Nesa provided on the other side of the film 63.
2, a transparent electrode 67 provided on a film or windshield 6 to face the transparent electrode 65, and a minute dot spacer or film insulator 68 spaced apart on the transparent electrode 67. .

The film electrode 61 is on the side pressed with a finger for input, that is, it is a movable electrode, and the windshield electrode 62 is on the side of the windshield 6, that is, the fixed electrode side. The film electrode 61 and windshield electrode 62 constructed in this way are attached to the display screen 13A of the windshield 6 as shown in FIG. Hard code layer 6 on the surface with your finger
4 toward the windshield substrate 62 on the back side, the transparent electrodes 65 and 67 come into contact, and the pair of electrodes becomes electrically conductive. The X and Y coordinates of the point of contact are supplied to the host computer to determine the position.

The above-mentioned input operation means 30, that is, the touch panel includes, of course, trigger keys 10A, 10B and X-Y.
The device 11 can be displayed.

FIG. 6 shows an example of a display image projected onto the input operation means 30, which is the touch panel. The figure shows an example of a display when a predetermined track is selected by the CD-I standard player 1.

[0043] For example, when selecting music, a CD-
A predetermined program number in I is displayed. By touching the cursor 70 next to this song number with a fingertip, the cursor 70 is moved to a predetermined song position to select a song. A CD button operation section 71 is displayed below the track number display column, and a CD button operation section 71 is displayed below the track number display field.
P), playback (PLAY), fast forward (FF), rewind (R
EW) buttons, etc. are displayed, and if you touch these with your fingertips, a predetermined CD-I player operation will be performed.

According to the display device of the present invention, it is not necessary to provide a display screen and an input device in a narrow instrument panel, and an input operation means that does not cause the driver to be inattentive to the road ahead while driving can be obtained.

[0045]

[Effects of the Invention] According to the display device of the present invention, since the display device and the input device can be displayed on the windshield, there is no need to arrange the display device and the input operation means on the narrow instrument panel. This also makes it possible to avoid being careless about what is going on in visual recognition and input operations even while driving.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a display device of the present invention.

FIG. 2 is a sectional side view of a main part of the display device of the present invention.

FIG. 3 is a configuration diagram showing an optical system of a projection type LCD used in the longitudinal device of the present invention.

FIG. 4 is a basic configuration diagram of a touch panel used in the display device of the present invention.

FIG. 5 is an assembled perspective view of a touch panel used in the display device of the present invention.

FIG. 6 is an explanatory diagram showing an example of a display screen of the display device of the present invention.

FIG. 7 is a system diagram of a display device of the present invention.

FIG. 8 is an explanatory diagram of the format of CD-I used in the display device of the present invention.

FIG. 9 is a configuration diagram of a conventional CD-I standard player.

[Explanation of symbols]

1 CD-I standard player 5 Handle 6. Windshield 7 Dashboard 9 Instrument panel 13A Display image area

Claims (1)

[Claims] Claim 1: In a display device of an electronic device mounted on a vehicle, an image of the display device is displayed on a windshield portion of the vehicle, and the windshield portion is also used as a touch panel as an input operation means. A display device characterized by: