Definitions for "HVD"
Keywords:  scsi, lvd, bus, differential, voltage
High Voltage Differential: the logic signalling system originally defined in the SCSI-2 standard. HVD has a maximum logic voltage of 5V and uses a paired plus and minus signal level to reduce the effects of noise on the SCSI bus. It was functionally replaced by LVD (Low Voltage Differential) in the SCSI-3 variant of the standard. HVD and LVD SCSI are not directly compatible but can be interconnected by the use of a special adapter.
High Voltage Differential. A method of driving SCSI cables, which is being replaced by LVD.
High Voltage Differential. A type of SCSI differential signaling requiring more expensive hardware to handle the higher voltage. HVD became obsolete with the introduction of SCSI-3.
High-clarity Video Disk. HVD is a Chinese technology that comes in the form of a very low cost player capable of playing back high-definition material recorded onto a DVD-R disk. The compression used is MPEG-2, just like HDVâ„¢. A viable short-term alternative for displaying HD video.
Holographic Versatile Disc. First units are expected to have 200 Gbytes capacity. Based on a technology originally developed by Optware. Storage Media
Keywords:  initialism
HVD is an initialism for