JP2003280628A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a semiconductor ROM-IC for image storage matching with the resolution (the number of pixels) of a display device needs to be manufactured for the conventional demonstration device (image display device). <P>SOLUTION: A timing controller performs image processing and an external signal input from a PC, etc., is cut out to the resolution (the number of pixels) of the display device and used to enable adaptation to various resolutions (the number of pixels). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device for displaying an image on a display device, and more particularly to an image display device used for demonstrating a display device such as a liquid crystal display device.

[0002]

2. Description of the Related Art A conventional demonstration device (image display device) will be described with reference to FIG. The demonstration device (image display device) 101 shown in FIG. 5 includes a timing controller 102 and a memory (semiconductor ROM-IC) 1.
03, the output terminal 105, and the operation unit 106.

The timing controller 102 reads the image data of the memory (semiconductor ROM-IC) 103 by the setting of the operation unit 106, generates the timing, and outputs the output terminal 1
A process such as outputting a drive signal to a display device such as a liquid crystal module connected to 05 is performed.

As described above, the conventional demonstration device (image display device) has a method in which a memory containing image data is installed in advance and the contents of this memory are displayed. In addition, a dedicated or general-purpose signal source device is used to set parameters, test patterns, and again, a memory with built-in image data is installed.
The method of displaying the contents of this memory was taken.

[0005]

However, in the prior art, since a semiconductor ROM-IC that has been written in advance is mounted as a memory, it is necessary to replace or rewrite the ROM-IC in order to change the image to be displayed. Met. Further, even when a moving image is to be displayed, it is necessary to create moving image data in advance according to the number of pixels to be displayed and then store it in a medium such as a ROM-IC, which makes it difficult to support various resolutions. Met.

[0006]

In order to solve the above problems, an image display device of the present invention has a removable memory, an operation section for giving an input instruction from the outside, and a parallel digital video signal from the outside. An image display device having an input terminal for driving, a timing controller for generating a drive signal for driving a display device, and an output terminal for outputting a drive signal for driving the display device, the input from the operation unit In response to the instruction, the timing controller reads the image signal that is the parallel digital video signal from the input terminal, and further cuts out the screen at arbitrary coordinates with the number of vertical and horizontal pixels according to the number of pixels of the display device, The image display device converts the signal into a drive signal for the display device by signal processing and outputs the drive signal to the output terminal.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An image display apparatus according to claim 1 of the present invention is a removable memory storing image data, an operation section for giving an input instruction from the outside, and a drive signal for driving a display device. An image display device comprising: a timing controller that generates a signal, and an output terminal that outputs a drive signal that drives the display device, wherein the timing controller outputs the image data from the memory according to an input instruction from the operation unit. It is characterized in that it is read out and converted into a drive signal of the display device by signal processing and output to the output terminal.

An image display apparatus according to a second aspect of the present invention is a removable memory, an operation section for giving an input instruction from the outside, and an input terminal for inputting a parallel digital video signal from the outside. An image display device comprising: a timing controller that generates a drive signal that drives a display device; and an output terminal that outputs a drive signal that drives the display device, wherein the timing is changed according to an input instruction from the operation unit. The controller reads the image signal that is the parallel digital video signal from the input terminal, further cuts out the screen at arbitrary coordinates with the number of vertical and horizontal pixels according to the number of pixels of the display device, and performs the display by the signal processing. It is characterized in that it is converted into a drive signal of the device and output to the output terminal.

An image display device according to a third aspect of the present invention is a removable memory, an operation unit for giving an input instruction from the outside, and an input terminal for inputting a serial digital video signal from the outside. An image including: a decoder that decodes the serial digital video signal into a parallel digital image signal; a timing controller that generates a drive signal that drives a display device; and an output terminal that outputs a drive signal that drives the display device. In the display device, in response to an input instruction from the operation unit, the timing controller reads an image signal decoded into parallel data by the decoder after being input from the input terminal, and further, a pixel of the display device. Cut out the screen at arbitrary coordinates with the number of vertical and horizontal pixels according to the number,
It is characterized in that it is converted into a drive signal of the display device by signal processing and output to the output terminal.

An image display device according to a fourth aspect of the present invention is a removable memory, an operation unit for giving an input instruction from the outside, and an input terminal for inputting a parallel digital video signal from the outside. An image display device comprising: a timing controller that generates a drive signal that drives a display device; and an output terminal that outputs a drive signal that drives the display device, wherein the timing is changed according to an input instruction from the operation unit. The controller reads the image signal which is the parallel digital video signal from the input terminal, further cuts out the screen at arbitrary coordinates with the number of vertical and horizontal pixels corresponding to the number of pixels of the display device, and performs the signal processing to display the display device. It is characterized in that it is converted into a command string for the control IC and output to the output terminal.

An image display device according to a fifth aspect of the present invention is a removable memory, an operation section for giving an input instruction from the outside, and an input terminal for inputting a serial digital video signal from the outside. An image including: a decoder that decodes the serial digital video signal into a parallel digital image signal; a timing controller that generates a drive signal that drives a display device; and an output terminal that outputs a drive signal that drives the display device. In the display device, in response to an input instruction from the operation unit, the timing controller reads an image signal decoded into parallel data by the decoder after being input from the input terminal, and further, a pixel of the display device. Cut out the screen at arbitrary coordinates with the number of vertical and horizontal pixels according to the number,
A command sequence for the display device control IC is converted by signal processing and output to the output terminal.

Further, the image display device of the present invention is characterized in that the removable memory is electrically rewritable and a writing means is provided in the device.

Further, the image display device of the present invention is characterized in that the operation of the timing controller is switched between the still image display and the moving image display, and only the memory is accessed during the still image display.

Further, the image display apparatus of the present invention is characterized in that the timing controller displays an image of a predetermined size by enlarging or reducing it in accordance with the resolution of the output destination display device.

(Embodiment 1) Hereinafter, (Embodiment 1) of the present invention will be described with reference to the drawings. Figure 1
It is a block diagram which shows the demonstration apparatus (image display apparatus) of this Embodiment. As shown in the figure, 1 is a demonstration device (image display device), 2 is a timing controller, 3 is a memory, 4 is an input terminal, 5 is an output terminal, and 6 is an operation unit.

When the image data is stored in the memory in advance and displayed, the following processing is performed.

First, the image data to be displayed is written in the memory 3 in advance. After mounting the demonstration apparatus 1 with a socket or the like, the demonstration apparatus 1 is operated. The timing controller 2 is a display device as an output destination, which reads out image data required for display from the memory 3 according to an input instruction from the operation unit 6.
The display drive timing is generated according to the number of pixels of the liquid crystal module. After generating the display drive timing, the timing controller 2 outputs a signal necessary for driving the liquid crystal module to the output terminal 5.

The operation of the timing controller 2 is such that the position information (cutout start coordinates, cutout end coordinates) to be cut out, output pixel information (vertical pixel number, horizontal pixel number), output data width information, according to an input instruction from the operation unit 6. (Bit width information) is obtained, and the original image input from the memory 3 is cut out based on the position information (cutout start coordinates, cutout end coordinates) to be cut out, and an image for output is generated. Further, the output pixel information (the number of vertical pixels, the number of horizontal pixels)
Further, the output timing obtained by scaling the number of pixels to be output is generated from the output data width information (bit width information), and the signal for driving the liquid crystal module is output.

It is possible to store a plurality of still images in the memory 3 and select an image to be displayed by the operation unit 6 (position designation). Further, the display can be stopped or sequentially displayed by the processing in the timing controller 2.

Further, a moving image is stored in the memory 3,
It is also possible to display a moving image in the memory.

As the memory, a ROM using a semiconductor IC
The same effect can be obtained by using a magnetic disk or an optical disk in addition to the memory and the RAM memory, and further, a writing means can be provided in the device.

When a parallel digital video signal is input from the outside, the following processing is performed.

A parallel digital video signal output terminal of a PC (personal computer) or the like is connected to the input terminal 4. After that, the demonstration device 1 is operated. The timing controller 2 reads the image data from the input terminal 4 according to the input instruction of the operation unit 6, cuts out the screen according to the number of pixels of the liquid crystal module which is the display device of the output destination, and regenerates the display data. Then
The display drive timing matching the number of pixels is generated. After generating the display drive timing, the timing controller 2 outputs the signal necessary for driving the liquid crystal module to the output terminal 5
Output to.

The cutout position can be specified by operating the operation unit 6.

FIG. 2 is a block diagram of the demonstration system according to the embodiment of the present invention. Reference numeral 7 is a PC having a parallel digital image signal output, and 8 is a liquid crystal display module which is a display device. The signal in part a of FIG. 2 is a parallel digital signal.

By generating a command string for the liquid crystal controller by the timing controller 2,
When outputting from the timing controller 2 to the output terminal 5, it is possible to output a command sequence for controlling the liquid crystal controller of the liquid crystal display module connected to the output terminal 5 instead of the data signal.

(Embodiment 2) Hereinafter, Embodiment 2 of the present invention will be described with reference to the drawings. Figure 3
It is a block diagram which shows the demonstration apparatus (image display apparatus) of this Embodiment. As shown in this figure, 11
Is a demonstration device (image display device), 2 is a timing controller, 3 is a memory, 4 is an input terminal, 5
Is an output terminal, 6 is an operation unit, and 9 is a decoder.

When the image data is stored in the memory in advance and displayed, the following processing is performed.

First, the image data to be displayed is written in the memory 3 in advance. Then, after mounting the demonstration device 11 with a socket or the like, the demonstration device 11 is operated. The timing controller 2 reads image data required for display from the memory 3 according to an input instruction from the operation unit 6, and generates display drive timing according to the number of pixels of a liquid crystal module, which is a display device of an output destination. After generating the display drive timing,
A signal necessary for driving the liquid crystal module is output from the timing controller 2 to the output terminal 5.

The operation of the timing controller 2 is such that the position information (cutout start coordinates, cutout end coordinates) to be cut out, output pixel information (vertical pixel number, horizontal pixel number), output data width information ( Bit width information)
Then, the original image input from the memory 3 is cut out based on the position information (cutout start coordinates, cutout end coordinates) to be cut out, and an image for output is generated. Further, the output pixel information (vertical pixel number, horizontal pixel number) and output data width information (bit width information) are used to generate an output timing that is scaled to the number of pixels to be output, and a signal for driving the liquid crystal module. Is output.

It is possible to store a plurality of still images in the memory 3 and select an image to be displayed by the operation unit 6 (position designation). Further, the display can be stopped or sequentially displayed by the processing in the timing controller 2.

The same effect can be obtained by using a magnetic disk or an optical disk in addition to a ROM memory and a RAM memory by a semiconductor IC as the memory, and a writing means can be provided in the apparatus.

When a serial digital video signal is input from the outside, the following processing is performed. Input terminal 4
A serial digital video signal output terminal of a PC (personal computer) or the like is connected to. A serial digital video signal output terminal is a DFP (Digital Flat Panel Por
t), DVI (Digital Visual Interface), LVDS, LDI (LVDSD
isplay Interface), GV-IF (Giga-bit Video Interface)
And so on. After that, the demonstration device 11
To operate. In response to an input instruction from the operation unit 6, the input terminal 4
The image data input via is decoded into parallel data by the decoder 9 and then read out to the timing controller 2, and the screen is cut out in accordance with the number of pixels of the liquid crystal module which is the display device of the output destination. The display data is regenerated, and the display drive timing matching the number of pixels is generated. After generating the display drive timing, the timing controller 2 outputs a signal necessary for driving the liquid crystal module to the output terminal 5.

The cutout position can be designated by operating the operation unit 6.

FIG. 4 is a block diagram of a demonstration system according to the second embodiment of the present invention.

In FIG. 4, 12 is a PC having a serial digital image signal output, and 8 is a liquid crystal display module which is a display device. The signal in part a of FIG. 4 is a serial digital signal.

By generating a command sequence for the liquid crystal controller by the timing controller 2,
When outputting from the timing controller 2 to the output terminal 5, it is possible to output a command sequence for controlling the liquid crystal controller of the liquid crystal display module connected to the output terminal 5 instead of the data signal.

(Embodiment 3) FIG. 1 is a block diagram showing a demonstration device (image display device) of (Embodiment 3) of the present invention. As shown in the figure, 1 is a demonstration device (image display device), 2 is a timing controller, 3 is a memory, 4 is an input terminal, 5 is an output terminal, and 6 is an operation unit.

In the present embodiment, the operation of the timing controller 2 is switched between the display of a still image and the display of a moving image by the setting of the operation unit 6, so that only the memory 3 is accessed during the display of a still image. As a result, the power consumption in the signal input circuit portion is eliminated, and the power consumption is reduced accordingly, and as a result, the battery life can be extended when the battery is driven.

[0040]

According to the image display apparatus of the present invention, a PC can be connected and a part of the screen can be cut out and displayed, so that any image that can be displayed on the PC can be displayed on the display device. It is possible to As a result, a semiconductor ROM-IC for image storage has been conventionally created, but the work is unnecessary and the workability can be greatly improved.

In particular, when displaying on a display device for a mobile phone or a PDA, the display target is generally lower in resolution than a PC, and the image display apparatus of the present invention which can be cut out and displayed like a PC is It is very effective for demonstrating display devices.

[Brief description of drawings]

FIG. 1 is a block diagram of a demonstration device according to first and third embodiments.

FIG. 2 is a block diagram of the demonstration system according to the first embodiment.

FIG. 3 is a block diagram of a demonstration device according to a second embodiment.

FIG. 4 is a configuration diagram of a demonstration system according to the second embodiment.

FIG. 5 is a block diagram of a conventional demonstration device.

[Explanation of symbols]

1, 11, 101 Demonstration device (image display device) 2, 102 Timing controller 3 Memory 4 Input terminal 5, 105 Output terminal 6, 106 Operation unit 7, 12 PC 8 Liquid crystal display module 9 Decoder 103 Memory (semiconductor ROM-IC )

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 5/93 H04N 5/93 EF term (reference) 5C023 AA06 AA38 CA02 DA04 5C053 FA07 FA14 FA27 KA04 LA06 5C082 AA01 BA12 BB15 BB25 BB44 BC16 BD02 BD09 CA32 CA81 DA53 DA63 DA76 DA86 MM05 MM09

Claims (8)

[Claims] 1. A removable memory storing image data, an operating section for inputting instructions from the outside, a timing controller for generating a drive signal for driving a display device, and a drive signal for driving the display device. An image display device having an output terminal for outputting, wherein the timing controller reads the image data from the memory according to an input instruction from the operation unit,
An image display device for converting into a drive signal of the display device by signal processing and outputting the drive signal to the output terminal. 2. A removable memory, an operation section for giving an input instruction from the outside, an input terminal for inputting a parallel digital video signal from the outside, and a timing for generating a drive signal for driving a display device. An image display device comprising a controller and an output terminal for outputting a drive signal for driving the display device, wherein the timing controller receives the parallel digital video signal from the input terminal according to an input instruction from the operation unit. A certain image signal is read out, and the screen is cut out at arbitrary coordinates with the number of vertical and horizontal pixels according to the number of pixels of the display device, converted into a drive signal of the display device by signal processing, and output to the output terminal. Image display device. 3. A removable memory, an operation section for giving an input instruction from the outside, an input terminal for inputting an external serial digital video signal, and the serial digital video signal as a parallel digital image signal. An image display device comprising a decoder for decoding, a timing controller for generating a drive signal for driving a display device, and an output terminal for outputting a drive signal for driving the display device, wherein an input instruction from the operation unit is provided. Thus, the timing controller reads the image signal decoded into parallel data by the decoder after being input from the input terminal, and further, at any coordinate with the number of vertical and horizontal pixels according to the number of pixels of the display device. The screen is cut out, converted into a drive signal for the display device by signal processing, and the output end is converted. Image display device to output to child. 4. A removable memory, an operation section for giving an input instruction from the outside, an input terminal for inputting a parallel digital video signal from the outside, and a timing for generating a drive signal for driving a display device. An image display device comprising a controller and an output terminal for outputting a drive signal for driving the display device, wherein the timing controller receives the parallel digital video signal from the input terminal according to an input instruction from the operation unit. A certain image signal is read out, the screen is cut out at arbitrary coordinates with the number of vertical and horizontal pixels according to the number of pixels of the display device, converted into a command string for a display device control IC by signal processing, and the output terminal is output. Image display device to output to. 5. A removable memory, an operation unit for giving an input instruction from the outside, an input terminal for inputting a serial digital video signal from the outside, and the serial digital video signal as a parallel digital image signal. An image display device comprising a decoder for decoding, a timing controller for generating a drive signal for driving a display device, and an output terminal for outputting a drive signal for driving the display device, wherein an input instruction from the operation unit is provided. Thus, the timing controller reads the image signal decoded into parallel data by the decoder after being input from the input terminal, and further, at any coordinate with the number of vertical and horizontal pixels according to the number of pixels of the display device. The screen is cut out and converted into a command string for the display device control IC by signal processing. And an image display device for outputting to the output terminal. 6. The removable memory is electrically rewritable and comprises a writing means within the device.
The image display device according to any one of to 5. 7. The image display apparatus according to claim 1, wherein the operation of the timing controller is switched between a still image display and a moving image display, and only the memory is accessed when the still image is displayed. 8. A timing controller displays an image of a predetermined size by enlarging or reducing it in accordance with the resolution of a display device as an output destination.
The image display device according to any one of 1.