1. Difference HI3531 development boards and other boards on the market? Large memory, to 1G byte, while the other boards on the market was a mere 256Mbyte? Dual Gigabit Ethernet ports, a single market before other board Fast Ethernet port? Belt NAND, the market generally does not bring the other boards? tantalum capacitors, high current, stable and reliable? with video input port, you can access the user's own daughter board 2. HI3531 development board can be used for decoding cards, the ability to decode the following? 24D1 @ 30fps decoding? 16x960H @ 30fps decoding? 8x720P @ 30fps decoding? 6x1080P @ 30fps decoding 3 can also be an external encoder card (sold separately), the ability to below? 16D1 @ 30fps +16 CIF @ 6fps encoding +16 D1 @ 30fps decoding + JPEG capture D1 @ 16fps? 16x960H @ 30fps +16 CIF @ 30fps encoding +4 x960H @ 30fps decoding + JPEG capture 960H @ 16fps? 4x1080P @ 30fps +4 x (960x540) @ 15fps encoding +1 x1080P @ 30fps decoding + JPEG capture 1080P @ 4fps? 4x720P @ 30fps +4 xQVGA @ 30fps encoding +4 x720P @ 30fps decoding + JPEG capture 720P @ 4fps? 8x720P @ 30fps +8 xQVGA @ 30fps encoding +1 x720P @ 30fps decoding + JPEG capture 720P @ 8fps 4. sent Hass Hi3531 SDK, the official board schematic and PCB 5. HI3531 development board provides the interface map, do not provide schematics and PCB 6. Hass uboot kernel file system can run without modification 7. boards (HI3531 development board) size 155x102mm 8. boards (HI3531 development board) resources 8Gbit/1Gbyte DDR 128Mbit/16Mbyte SPI NOR FLash 1Gbit/128Mbyte NAND Flash Hass HI3531 development board NVR large memory card 4x1080P decoder board with dual Gigabit LAN Nand