GV7700中文资料HD-VLC™ Transmitter for HD Video Surveillance数据手册Semtech规格书

描述 Description

The GV7700 is a serial digital video transmitter for High Definition component video. With integrated cable driving technology, the GV7700 is capable of transmitting HD video at a compressed 270Mbps or an uncompressed 1.485Gbps over 75ohm coaxial cable, or differentially over 100ohm twisted pair cable.\u000B

The GV7700 integrates the High Definition Visually Lossless CODEC (HD-VLC™) technology, which has been developed specifically to reduce the transmission data rate of HD video over both coaxial and unshielded twisted pair (UTP) cable. This is achieved by encoding the HD video, normally transmitted at a serial data rate of 1.485Gbps, to the same rate as Standard Definition (SD) video, at 270Mbps serial data rate.\u000B

At 270Mbps, the effect of cable loss is greatly reduced, resulting in much longer cable transmission. For 75ohm coaxial cable, HD-VLC allows a 1.485Gbps HD signal to be transmitted up to four times the normal reach. In typical video over coaxial installations, when paired with Semtech’s GV7704 HD-VLC receiver, cable distances of up to 500m are possible.\u000B

The GV7700 can also be configured to transmit HD video over UTP cable, such as Cat-5e and Cat-6 cable, when HD-VLC encoded at 270Mbps.

特性 Features

• Serial digital video transmitter for HD video surveillance and HDcctv applications
• Backward compatible with HDcctv 1.0 and HD-SDI (ST 292)
• Configurable 50/75ohm cable driver output, for both coaxial and twisted pair cable transmission
• Downstream ancillary data insertion
• Support for both 8/10-bit and 16/20-bit BT.1120 compliant video interfaces, with embedded TRS or external HVF timing
• 1.8V power supply with 3.3V or 1.8V selectable I/O supply
• Low power operation, typically 180mW
• Pb-free and RoHS compliant
• 84-pin dual-row QFN (260 pcs/tray)

应用 Application

• HD Security Cameras
• HD-SDI & HDcctv Peripherals
• HD Video Converters
• HD Video Multiplexers