A Design Of Three-dimensional Display System Of Computer-generated Holography Based On TMS320DM6446

Holographic display is a very active branch of the field of laser holography. Holographic display can show the real object with the same depth and parallax, and it is considered the ideal three-dimensional display. Computer generated hologram (CGH) is a new technology to produce Hologram, that is computer technology combined with holography, and it can correctly show the light three-dimensional objects. Since the birth of holography, CGH technology will likely become the ultimate three-dimensional display system. For this reason, we chose to calculate three-dimensional holographic display system designed as a research subject.TMS320DM6446 is a latest embedded video system chip of TI. I have a master's degree thesis research work around the CGH-based TMS320DM6446 the design of three-dimensional display system launched. Main tasks are as follows: Firstly, the embedded system, embedded microprocessors and embedded operating systems were described.Also a detailed analysis of embedded dual-core (ARM+DSP) microprocessor TMS320DM6446 structural characteristics and functions is included, and a calculation based on the processor three-dimensional holographic display system design and implementation is proposed on this basis. Audio / video codes, DDR2, NAND / NOR Flash, USB, display module is equipped according to the system design requirements and describes the major modules of the software and hardware design. Methods are summarized below the main module:1,Image processing module is completed by video processing subsystem of TMS320DM6446. The video processing subsystem includes video processing front end (VPFE) and video processing back-end (VPBE). Video processing front end includes a CCD controller (CCDC), Preview Engine, image size adjustment device, hardware 3A (H3A) and histogram statistics generator module. Video processing back end includes a screen display (OSD) module, video encoder (VENC) and digital LCD Controller (DLCD) composition.2,Display Driver Module. The small LCD screen and associated driver IC used in driver circuit are products of Japan SONY By knowing about LCX029CNT screen (it supports XGA (1024×768) high-resolution display),CXA3512R sample/hold drives, CXD3500R clock generator, phase-locked loop CXA3106Q and GAMMA adjustment CXA2111R.3,External memory modules. External memory includes DDR2 memory and NAND Flash memory. The system uses two 16-bit data width composed of DDR2 memory width of 32-bit data bus, and selects Micro chip MT47H32M16BT and NANDR3A with 64MB capacity.To improve the software and hardware overall reliability, Many ways are used in system design and implementation: multi-layer PCB design, which makes a compact structure and arranges signal layer next to ground layer. Low voltage reset, cooling, anti-electromagnetic interference and other technical. Plan system block diagram and design flow chart according to the method of software project. This greatly decreases error conditions.