Compressing HDTV Signals

NHK and NTT Communications will jointly develop an improved version of a device that digitally compresses HDTV signals.

NHK (Japan Broadcasting Corporation) and NTT Communications Corporation (NTT Com) will jointly develop an improved version of a device that digitally compresses high-definition television (HDTV) signals using large-scale integration (LSI).

The two companies have started a joint-development committee that will decide on the specifications of the new device and that, by the end of 2000, will select companies to manufacture it. NHK and NTT aim to complete the development of the device by 2002.

The collaborative development will enable the size of the existing device to be reduced and its price to be lowered, resulting in advantages to NHK and NTT Com, both of which plan to install the new device in transmission facilities.

Because existing HDTV-signal compression devices are relatively large, they have been used mainly indoors. The new device will adopt an MPEG-2 standard, enabling the size of the device to be as small as a post card. It will be suitable for use in HDTV field pickup units (microwave link units) and optical-fibre transmission facilities.

NTT are at

http://www.ntt.com/index-e.html