scan line


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scan line

[′skan ‚līn]
(electronics)
A horizontal row of pixels on a video screen that are examined or refreshed in succession in one sweep across the screen during the scanning process.

scan line

The line produced on a recording medium frame by a single sweep of a scanner.

scan line

(hardware)
A horizontal line of pixels generated by a single horizontal sweep of the beam from a monitor's electron gun. The number of scanlines that make up a frame is the vertical resolution.

scan line

A horizontal line (a row) in a video frame. Camcorders sense image frames a line at a time, and display systems create images a line at a time. The scan lines are the vertical resolution of the system; for example, an NTSC TV signal uses 525 lines, 480 of which contain image data ("active" scan lines) and 45 are the vertical blanking interval (VBI) in between the frames. Following are the active scan lines of various video formats. See scan rate and horizontal scan frequency.

Analog              ActiveFormats             Scan Lines

  VHS                 240
  8mm                 240
  Sony U-matic 3/4"   250
  Sony U-matic SP     330
  S-VHS               400
  Hi8                 400
  Laserdisc           425
  NTSC                480 out of 525
  PAL/SECAM           580 out of 625


  Digital             ActiveFormats             Scan Lines

  DVD                 480
  DV                  480
  SDTV Digital TV     480
  EDTV Digital TV     480
  HDTV Digital TV     720 & 1080
References in periodicals archive ?
Data acquisition of the images is accomplished by recording the 16-bit image values and storing them into a linear scan line array.
The sector size affects the number of scan lines needed per image.
5) 1080i:A digital broadcasting video signal format that uses 1,080 effective scan lines (1,125 actual lines) and interlaced scanning at 29.
Digitization of data sources acquisition scan lines,
A highlight of Toshiba's showing was the introduction of ColorStream Pro technology, which provides a progressively scanned image that enables viewers to watch DVD movies "as they were intended to be seen, free of visible scan lines and NTSC artifacts," the company said.
The scanner offers NCR's exclusive Optical Effects Technology, which sets a new standard for scan pattern density - a key factor in scanning performance - by generating more scan lines at greater lengths.
The AMF means the following telephone lines isolated lines- Analog lines- So-called Scan lines or isdn Basic Access or equivalent- So-called green number numbers or Free call or equivalent- The numbers called Riviera or local price or equivalent
Providing improved first pass read rates and increased throughput at the POS, standard features include high speed electronics and the industry's most aggressive scan pattern with 6,400 scan lines per second.
the scanning system must for operational reasons (mainly for redundancy) consist of two new identical scan lines that can be used both individually and simultaneously.
To speed bar code scanning, the DS6608 enables omni-directional scanning, eliminating the need for the postal workers to line up bar codes with scan lines, and allowing even entry-level users to scan quickly and accurately.
Multi-site, multi-institution processing make it easy to add lockbox customers to the system, set up customer specific instructions, and establish multiple scan lines per customer.
the scanning system needs for operational reasons (mainly for redundancy) consist of two new identical scan lines that can be used both individually and simultaneously.