CN201518214U

CN201518214U - Display die set apparatus for medical application

Info

Publication number: CN201518214U
Application number: CN2009202037594U
Authority: CN
Inventors: 孙力勇; 任强; 王强; 马丙林; 李岩; 何小龙; 李奎星
Original assignee: SHENYANG TORCH-BIGTIDE DIGITAL TECHNOLOGY Co Ltd; SHENZHEN JUCHAO TECHNOLOGY Co Ltd
Current assignee: Shenyang Torch-Bigtide Digital Technology Co., Ltd.
Priority date: 2009-09-29
Filing date: 2009-09-29
Publication date: 2010-06-30
Anticipated expiration: 2019-09-29

Abstract

The present utility model relates to a display die set apparatus for medical application, pertaining to the technical field of medical apparatuses. The apparatus comprises a signal decoder, a signal encoder, an image signal processor and a liquid crystal display screen. The input end of the signal decoder is connected with an LVDS interface, the output end of the signal decoder is connected with the input end of the signal encoder, the output end of the signal encoder is connected with the input end of the image signal processor, and the output end of the image signal processor is connected with the input end of the liquid crystal display screen. The utility model is characterized in that because of the structure that the liquid crystal display screen is directly driven by LVDS, the display die set apparatus can be used directly without big changes to realize function of medical display apparatuses with the same size, display effects of a 8-bit liquid crystal display screen can be achieved only by a 6-bit liquid crystal display screen, and comparing with analog signals, the display die set apparatus has clear images and a strong anti-interference capability.

Description

Medical demonstration die set

Technical field

The utility model belongs to the medical apparatus technical field, particularly a kind of medical demonstration die set.

Background technology

The demonstration of existing portable excusing from death diagnostic device image is mainly finished by CRT (cathode-ray tube (CRT)), along with CRT LCDs development of technology, adopt the LCD LCDs as image output terminal, be that reality of portable excusing from death diagnostic device is selected, the signal of accepting based on the display unit of CRT technology is a simulating signal, and the final acceptance of LCD LCDs is digital signal, this apparatus structure weak point: because the analog signal conversion that CRT uses becomes the process of digital signal to be easy to generate interference, particularly at the low grey exponent part of image.The device that has adopts mainboard output LVDS (Low Voltage Differential Signal) signal directly to drive the LCD LCDs, does not often reach the technical requirement of expectation.

Summary of the invention

Deficiency at the prior art existence, the utility model provides a kind of medical demonstration die set, by back recompile that input signal is decoded, signal behind the coding after handling, image-signal processor is gone to drive LCDs again, reach the display effect that improves LCDs, strengthen the purpose of clear picture antijamming capability.

The technical solution of the utility model is achieved in that this device comprises decoding signals, signal coder, image-signal processor and LCDs.

This device connects: the decoding signals input end connects the LVDS interface, the decoding signals output terminal connects the signal coder input end, the signal coder output terminal connects the image-signal processor input end, and the image-signal processor output terminal connects the LCDs input end.

The utility model has the advantages that: the structure that directly drives LCDs with LVDS, need not do big change and can directly use the utility model, realize the function that unidimensional medical display has, can make 6 LCDs reach the display effect of 8 LCDs, with the simulating signal ratio, the clear picture antijamming capability is strong.

Description of drawings

The medical demonstration die set of Fig. 1 the utility model structured flowchart;

LVDS interface, decoding signals THC63LVDF84B chip and signal coder SiI164CTG64 chip portfolio electrical schematic diagram in the medical demonstration die set of Fig. 2 the utility model;

Image-signal processor GM5621 chip electrical schematic diagram in the medical demonstration die set of Fig. 3 the utility model.

Embodiment

The detailed structure of the medical demonstration die set of the utility model is illustrated with accompanying drawing in conjunction with the embodiments.

Image-signal processor adopts the GM5621 chip, and same keyboard, pilot lamp, crystal oscillator and storer are connected, and storer is the serial flash non-volatile RAM, and decoding signals adopts the THC63LVDF84B chip, and signal coder adopts the SiI164CTG64 chip,

This device comprises decoding signals, signal coder, image-signal processor and LCDs as Fig. 1, Fig. 2 and shown in Figure 3.

The connection of this device is: decoding signals input end RA-, RA+, RB-, RB+, RC-, RC+, RCLK-, RCLK+, RD-is connected LVDS interface 16-3 successively with RD+, decoding signals output terminal RB5, RB6, RC0, RC1, RC2, RC3, RD4, RD5, RA6, RB0, RB1, RB2, RB3, RB4, RD2, RD3, RA0, RA1, RA2, RA3, RA4, RA5, RD0, RD1, CLKOUT, RC6, RC5 is connected signal coder input end D0-D23 successively with RC4, IDCK+, DE, VSYNC and HSYNC, signal coder output terminal TX2+, TX2-, TX1+, TX1-, TX0+, TX0-, TXC+ is connected image-signal processor input end RX2+ successively with TXC-, RX2-, RX1+, RX1-, RX0+, RX0-, RXC+ and RXC-, the image-signal processor output terminal connects LCDs.

The course of work of this device: single channel LVDS signal is decoded into gate level TTL through the THC63LVDF84B cake core.The TTL signal comprises 24 DATA[23:0] the RGB data, 1 line synchronizing signal, 1 potential field synchronizing signal, 1 enable signal, 1 keeps position and clock signal.The TTL signal of decoding signals output is as the input signal of signal coder.The chip of SiI164CTG64 model is finished input signal is converted to the TMDS Low Voltage Differential Signal that meets the DVI1.0 standard.The DVI mouth (digital visual interface) of GM5621 chip receives the standard DVI1.0 picture signal that produces previously, drives LCDs through its inter-process output 6bit/8bitLVDS signal.

Image processing process:

1, will convert 8 bit image signals to from the digital signal decoding of DVI mouth input;

2, according to the input signal clock frequency scale controller is set, selects scaling to carry out interpolation or compressed image demonstration;

3, response user input, enter when effective input that custom menu is carried out corresponding task or by input command to the corresponding entry adjustment, comprise adjustment brightness, contrast, backlight illumination shows that GAMMA (tint ramp) characteristic selects the colour temperature selection;

4, being provided with according to the user and selecting the LUT formula of tabling look-up, is the addressing address by different colours GTG value, determines output valve and output according to input-output function relation in the LUT table (modification information after data are handled through light and shade adjustment etc.);

5, check whether OSD (screen menu type regulative mode) menu is arranged, menu image is compound in the picture signal if having then;

6, picture signal is encoded according to LVDS signal format, and exports to LCDs.

Claims

1. a medical demonstration die set is characterized in that this device comprises decoding signals, signal coder, image-signal processor and LCDs; The connection of this device is: the decoding signals input end connects the LVDS interface, the decoding signals output terminal connects the signal coder input end, the signal coder output terminal connects the image-signal processor input end, and the image-signal processor output terminal connects the LCDs input end.