TWI757736B - Conversion device for converting black-white or gray-level frame to color display, and electronic device and color display device using the same - Google Patents

Abstract

A conversion device for converting a black-white or gray-level frame to a color display includes: a plurality of hardware circuits electrically connected to each other, for receiving input data provided by a control circuit and drawing a color frame according to the input data into color frame data, so as to provide a color frame data to the color display; wherein the input data includes at least one of a control signal, a string signal, a number signal and a symbol signal.

Description

A conversion device for converting black and white or grayscale image frames to display on a color display screen, and Electronic devices and color display devices using the same

The present invention relates to a conversion device capable of converting black and white or grayscale image frames displayed by an existing electronic device to a color display screen, and to an electronic device and a color display screen device using the conversion device.

Existing home appliances, machine tools, processing machines, watches, computers or other electronic devices may use black and white or grayscale pixel displays or black and white liquid crystal displays (eg, black and white liquid crystal seven-segment displays or black and white dot matrix liquid crystal displays) to display some Therefore, the signal output by the above electronic device to the pixel display or the black and white liquid crystal display may be a plurality of black and white or grayscale pixel signals of a picture frame, a control signal, more than one string signal, more than one digital signal or more than one symbol signal. However, with the popularity of color displays (eg, color liquid crystal displays), the number of pixel displays or black and white liquid crystal displays to be produced has also decreased, making the manufacturing costs of pixel displays or black and white liquid crystal displays more expensive than that of color displays. Manufacturing costs are also high.

First, please refer to FIG. 1 , the electronic device 1 of the prior art includes a control circuit 11 and a black and white liquid crystal display 12, wherein the control circuit 11 is electrically connected to the black and white liquid crystal display 12 (or a black and white or grayscale pixel display), and outputs a control signal , digital signal, string signal or symbol signal to control black and white The liquid crystal display 12 displays black and white picture frames with corresponding information. For example, the electronic device 1 can be a local telephone device, and the control circuit 11 can control the black and white liquid crystal display to display numbers according to the touched keys. For another example, the electronic device 1 may be a processing machine, and according to its operation, the control circuit 11 outputs a control signal, a digital signal, a string signal or a symbol signal to control the black and white liquid crystal display 12 to display black and white image frames with corresponding information. . In addition, as mentioned above, the electronic device 1 may use a black-and-white or gray-scale pixel display to replace the black-and-white liquid crystal display 12. At this time, the control circuit 11 outputs a plurality of black and white or gray-scale pixel signals of a frame to drive the The pixel display displays black and white or grayscale image frames with corresponding information.

Next, please refer to FIG. 2 , the color liquid crystal display screen 2 of the known technology includes a timing controller 21 , a source driver 22 , a gate driver 23 and a liquid crystal display panel 24 , wherein the timing controller 21 is electrically connected to the source The driver 22 and the gate driver 23 and the liquid crystal display panel 24 are electrically connected to the source driver 22 and the gate driver 23 . The timing controller 21 can receive the color image frame signal, wherein the resolution of the color image frame signal generally corresponds to the resolution of the liquid crystal display panel 24. For example, if the resolution of the liquid crystal display panel 24 is 1024*968*3 pixels, enter the The resolution of the color picture frame signal to the timing controller 21 is 1024*968*3 pixels. The timing controller 21 controls the gate driver 23 to sequentially drive pixel transistors of a plurality of columns of the liquid crystal display panel 24, and controls the source driver 22 to send a plurality of pixel signals to the pixel transistors corresponding to the column.

From the description of FIG. 1 and FIG. 2 , it can be known that, due to the different data formats, the color liquid crystal display cannot be directly used to replace the pixel display or the black and white liquid crystal display. Therefore, when the pixel display or the black-and-white liquid crystal display of the above-mentioned electronic device is broken or faulty and needs to be replaced, it may be faced with a technical problem that the maintenance cost is relatively high.

An embodiment of the present invention provides a conversion device for converting a black-and-white or grayscale image frame to a color display screen, comprising: a plurality of hardware circuits electrically connected to each other, for receiving input data provided by a control circuit, and according to The input data is drawn to generate color picture frame data for the color display screen; wherein the input data includes at least one of a control signal, a character string signal, a digital signal and a symbol signal.

In short, through the conversion device provided by the embodiment of the present invention, a color display screen can be used to replace the black and white liquid crystal display and the pixel display. In addition, the conversion device can be integrated with the color display screen to form a color display screen device, or integrated with the color display screen and the control circuit to form an electronic device.

1: Electronic device

11: Control circuit

12: Black and white LCD monitor

2: Color LCD screen

21: Timing Controller

22: Source driver

23: Gate driver

24: LCD panel

3: Electronic device

30: Color display device

31: Conversion device

311: Instruction Interpretation Unit

312: Font lookup unit

313: Drawing Unit

314: Display Control Unit

FIG. 1 is a block diagram of a black-and-white liquid crystal display for displaying a black-and-white image frame in an electronic device of the prior art.

FIG. 2 is a block diagram of a color liquid crystal display screen of the prior art.

FIG. 3 is a block diagram of the conversion device according to the first embodiment of the present invention applied to an electronic device.

FIG. 4 is a block diagram of a conversion device according to a second embodiment of the present invention.

FIG. 5 is a block diagram of a conversion device according to a third embodiment of the present invention.

In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail by the following specific embodiments and the accompanying drawings. The description is as follows.

An embodiment of the present invention provides a conversion device that can convert black and white or grayscale image frames displayed by an electronic device of the prior art to a color display screen, so that even if the pixel display or the black and white liquid crystal display of the electronic device of the prior art is damaged failure or failure, it can also be used as a medium through this conversion device. The interface uses the existing color display (eg, color liquid crystal display) to replace the broken or faulty pixel display or black and white liquid crystal display, so as to achieve the purpose and effect of reducing maintenance costs.

The input data received by the converting device is one control signal, one or more string signals, one or more digital signals, or one or more symbol signals, and the converting device is based on the control signal, one or more string signals, one or more digital signals or More than one symbol signal is plotted to generate color picture frame data.

The above method can use a hardware circuit with lower cost and lower processing rate, so that the manufacturing cost of the conversion device of the embodiment of the present invention is not high, so the overall cost of the conversion device and the color display screen will be much lower than the existing black and white liquid crystal display. with pixel display.

After describing the inventive concept of the present invention, the details of each embodiment of the present invention will be further described. First, referring to FIG. 3 , in the first embodiment, the electronic device 3 includes a control circuit 11 and a color display device 30 , wherein the control circuit 11 is electrically connected to the color display device 30 . The control circuit 11 is used for outputting control signals, digital signals, word string signals or symbol signals to control the black and white liquid crystal display to display corresponding black and white picture frames.

The color display device 30 has a conversion device 31 and a color liquid crystal display screen 2 , wherein the conversion device 31 is electrically connected to the timing controller 21 of the color liquid crystal display screen 2 . The color liquid crystal display screen 2 includes a timing controller 21, a source driver 22, a gate driver 23 and a liquid crystal display panel 24, wherein the functions and connections of the timing controller 21, the source driver 22, the gate driver 23 and the liquid crystal display panel 24 The relationship is as described above, so it is not repeated here.

The conversion device 31 includes a plurality of hardware circuits that are electrically connected to each other, and the conversion device 31 can convert the input data received by the conversion device 31 (ie, the control signal, digital signal, string signal or symbol signal output by the control circuit 31 ) to convert, The color picture frame data is generated and provided to the picture frame buffer of the timing controller 21 for buffering. In this way, the color liquid crystal display screen 2 can display color picture frames corresponding to the information corresponding to the control signal, digital signal, word string signal or symbol signal output by the control circuit 31 . Simply put, through The color display device 30 formed by integrating the conversion device 31 and the color liquid crystal display 2 can be directly used to replace the black and white liquid crystal display or the pixel display. In addition, in the first embodiment, the conversion device 31 is integrated with the color liquid crystal display screen 2 , but the present invention is not limited to this, and the conversion device 31 can also be an independent interface serving as an intermediary interface between the color liquid crystal display screen 2 and the control circuit 11 . element.

Further, the converting device 31 performs drawing according to the control signal, digital signal, character string signal or symbol signal to generate color picture frame data. For example, the black and white liquid crystal display can be designed to display corresponding symbols according to the symbol signal. For example, if the symbol signal is 4 bits of "1000", the black and white liquid crystal display will display the number "8", and the conversion device 31 draws the picture according to the digital signal. , and generate a color picture frame data that can display the number "8", wherein "8" in the color picture frame can be black, red, blue or green, and the present invention is not limited thereto. The above control signal, digital signal, character string signal or symbol signal can be encoded in any format, such as digital code, ANSI, ANSII, UTF-8, BIG-5 or GB code, etc., and the present invention is not limited thereto.

Next, please refer to FIG. 4 , in the second embodiment, a plurality of hardware circuits of the conversion device 31 include an instruction interpretation unit 311 , a font search unit 312 , a drawing unit 313 and a display control unit 314 , wherein the instruction interpretation unit 311 electrically The font search unit 312 , the drawing unit 313 and the display control unit 314 are electrically connected. The font search unit 312 is electrically connected to the drawing unit 313 , and the drawing unit 313 is electrically connected to the display control unit 314 . The instruction interpretation unit 311 will interpret the instruction issued by the control circuit, and according to the different instructions, such as: update font type, update character string, highlight text, etc. The direct font search unit 312 , the drawing unit 313 and the display control unit 314 can perform corresponding work.

The instruction interpretation unit 311 can interpret the instruction issued by the control circuit, that is, it can interpret the type of input data and parse the instruction. For example, when the interpretation input data is a control signal, a digital signal, a character string signal or a symbol signal, the instruction interpretation unit 311 will control the font search unit 312 to search for the font to find the corresponding text pattern, and the drawing unit 313 will According to the result found by the font search unit 312, the text pattern and the resolution of the liquid crystal display panel are inlaid with programmable scale and transparency. In order to complete the drawing action and generate the corresponding picture frame, the display control unit 314 will directly convert the picture frame drawn by the drawing unit 313 or the rotated picture frame into a color liquid crystal display screen. Accepted timing control signal (ie, color picture frame data). The picture rotation can make the horizontal screen display vertically or the vertical screen horizontally display to increase the selectivity of the color LCD screen. In this way, the converting device 31 can draw the corresponding color picture frame data according to the input data, and further generate all the clocks and signals for controlling the liquid crystal display panel for display.

Referring to FIG. 5 , in the third embodiment, the converting device 31 realizes the function of dynamically drawing input data, and includes more than two drawing units 313 . For example, text flashing, marquee...etc. The instruction interpretation unit 311 can control the drawing unit 313 to draw multiple moving image frames at the same time according to different attributes. Finally, it is handed over to the display control unit 314 to output two different color frame data at different time points, so as to realize the purpose of generating dynamic image signals of the color LCD screen according to the time axis.

To sum up, the embodiments of the present invention provide a conversion device, which can convert black and white or grayscale image frames displayed by an electronic device of the prior art to a color display screen for display. Therefore, when the electronic device of the prior art is used for When a pixel display or a black and white liquid crystal display is broken or malfunctioning, the conversion device can be used as an intermediary interface, and an existing color display (for example, a color liquid crystal display) can be used to replace the broken or malfunctioning pixel display or black and white liquid crystal display. , so as to achieve the purpose and effect of reducing maintenance costs. Furthermore, the conversion device can be integrated into the existing color display screen to form a color display screen device, which can be directly used for replacing pixel displays or black and white liquid crystal displays of electronic devices of the prior art. In addition, if the control circuit of an electronic device (such as a home appliance, a machine tool, a processing machine, a watch or a computer), the conversion device of the embodiment of the present invention, and the existing color display screen are integrated into a new electronic device, the Manufacturing costs can be reduced.

The present invention has been disclosed above with preferred embodiments, but those skilled in the art should understand that the above embodiments are only used to describe the present invention, and should not be construed as limiting the scope of the present invention. should be noted It is intended that all changes and substitutions equivalent to those of the foregoing embodiments should be considered to be included within the scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of the patent application.

11: Control circuit

2: Color LCD screen

21: Timing Controller

22: Source driver

23: Gate driver

24: LCD panel

3: Electronic device

30: Color display device

31: Conversion device

Claims (7)

A conversion device for converting black and white or grayscale image frames to a color display screen, comprising: a plurality of hardware circuits electrically connected to each other, for receiving input data provided by a control circuit, and performing processing according to the input data. drawing to generate color picture frame data for the color display screen; wherein the input data includes at least one of a control signal, a word string signal, a digital signal and a symbol signal, and the conversion device is based on the control signal, the word string The signal, digital signal or symbol signal finds the search result, draws a picture frame according to the search result, and further generates all the clocks and signals for controlling the color display screen for display. The conversion device of claim 1, wherein the control signal, character string signal, digital signal or symbol signal adopts digital code, ANSI, ANSII, UTF-8, BIG-5 or GB code. The conversion device of claim 1, wherein the plurality of hardware circuits comprise: an instruction interpretation unit; a font search unit controlled by the instruction interpretation unit; a drawing unit controlled by the instruction interpretation unit; and a display The control unit is controlled by the instruction interpretation unit; the font search unit searches according to the control signal, the character string signal, the digital signal or the symbol signal, and the drawing unit is used for searching according to all the characters of the font search unit. the picture frame drawn by the search result, and the display control unit is used for drawing according to the picture frame The picture frame drawn by the picture unit generates the color picture frame data, and further generates all clocks and signals for controlling the color display screen for display. The conversion device of claim 3, wherein the plurality of hardware circuits further comprises: another drawing unit, and the instruction interpretation unit controls the drawing unit and the another drawing unit to draw multiple drawings simultaneously according to different attributes. A picture frame of a moving image, the display control unit outputs two different color picture frame data to the color display screen at different time points. A color display screen device, comprising: the conversion device according to one of claims 1 to 4; and the color display screen electrically connected to the conversion device. An electronic device, comprising: the conversion device described in one of claims 1 to 4; the color display screen electrically connected to the conversion device; and the control circuit electrically connected to the conversion device, using in generating the input data. The electronic device according to claim 6, wherein the electronic device is a home appliance, a machine tool, a processing machine, a watch or a computer.

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