ADV611 Datasheet | Analog Devices

FEATURES Programmable “Quality Box” Industrial Temperature Range (ADV612) Hardware Frame Rate Reduction 100% Bitstream patible with the ADV601 and ADV601LC Precise pressed Bit Rate Control Field Independent pression 8-Bit Video Interface Supports CCIR-656 and Multi- plexed Philips Formats General Purpose 16- or 32-Bit Host Interface with 512 Deep 32-Bit FIFO PERFORMANCE Real-Time pression or Depression of CCIR-601 to Video: 720 ؋ 288 @ 50 Fields/Sec - PAL 720 ؋ 243 @ 60 Fields/Sec - NTSC pression Ratios from Visually Loss-Less to 7500:1 Visually Loss-Less pression At 4:1 on Natural Images (Typical) APPLICATIONS CCTV Cameras and Systems Time-Lapse Video Tape Recorders Time-Lapse Video Disk Recorders Wireless CCTV Cameras Fiber CCTV Systems GENERAL DESCRIPTION The ADV611/ADV612 are low cost, single chip, dedicated function, all-digital-CMOS-VLSI devices capable of supporting visually loss-less to 7500:1 real-time pression and depression of CCIR-601 digital video at very high image quality levels. The chips integrate glueless video and host interfaces with on-chip SRAM to permit low part count, system level implementations suitable for a broad range of applications. The ADV611/ADV612 are 100% bitstream patible with the ADV601. The ADV611/ADV612 es in a 120-lead LQFP package. The ADV611/ADV612 are video encoders/decoders optimized for closed circuit TV (CCTV) applications. With the ADV611/ ADV612, you can define a portion of each video field to be at a higher quality level relative to the rest of the field. This “quality box” feature significantly increases pression of less important background details, while retaining the image’s overall context. Additionally, the unique subband coding architecture of the ADV611/ADV612 offer many application-specific advantages. A review of the General Theory of Operation and Applying the ADV611/ADV612 sections will help you get the most use out of the ADV611/ADV612 in any given application. The ADV611/ADV612 accept ponent digital...