- Industrie:
- Number of terms: 20560
- Number of blossaries: 0
- Company Profile:
Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
A hardware interrupt request to the CPU which cannot be masked internally in the processor by a bit, but must be serviced immediately.
Industry:Software
The blanking signal at the end of each horizontal scanning line. Used to make the horizontal retrace invisible. Also called horizontal blanking.
Industry:Software
ISDN is a CCITT term for a relatively new telecommunications service package. ISDN is basically the telephone network turned all-digital end to end, using existing switches and wiring (for the most part) upgraded so that the basic call is a 64 kbps endto- end channel, with bit manipulation as needed. Packet and maybe frame modes are thrown in for good measure, too, in some places. It’s offered by local telephone companies, but most readily in Australia, France, Japan, and Singapore, with the UK and Germany somewhat behind, and USA availability rather spotty. A Basic Rate Interface (BRI) is two 64K bearer (B) channels and a single delta (D) channel. The B channels are used for voice or data, and the D channel is used for signalling and/or X.25 packet networking.
This is the variety most likely to be found in residential service.
Another flavour of ISDN is Primary Rate Interface (PRI). Inside the US, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Outside of the US then PRI has 31 user channels, usually divided into 30 B channels and 1 D channel. It is typically used for connexions such as one between a PBX and a CO or IXC.
Industry:Software
A coding scheme that is polarity sensitive.
0 = logic low; 1 = logic high.
Industry:Software
Use of a video line amplifier to pre-compensate for high-frequency video signal transmission losses resulting from long distance cable runs (several hundred meters) by boosting those signal frequencies most effected. Without such compensation, deterioration is manifested as loss of fine details and colour distortion.
Industry:Software
Literally single color, usually used to indicate black and white. There have been monochrome high line rate cameras and displays for many years. The EIA has standardised rates of up to 1225 scanning lines per frame. NHK developed a monochrome HDTV system with 2125 scanning lines per frame. Even higher number of scanning lines are used in conjunction with lower frame rates in cathode ray tube scanners used in printing and in film. These extremely high rates are possible because monochrome picture tubes have no triads.
Industry:Software
The cassette tape loading mechanism used in VHS videotape recorder/playback technology.
Industry:Software
A video data scrambling scheme that is polarity insensitive. 0 = no change in logic; 1 = a transition from one logic level to the other.
Industry:Software
Interactive videodisc is another video-related technology, using an analogue approach. It has been available since the early 1980s, and is supplied in the U.S. primarily by Pioneer, Sony, and IBM.
Industry:Software
