Interlaced Scanning


Interlaced Scanning
VP
To economise bandwidth for CRT monitors, lines of video are recorded as separate fields of odd lines followed by scans of the even lines. Sometimes still frames in interlace scanning produce a flicker. Progressive scanning produces sharper images but requires greater bandwidth.
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WikiV
A technique of combining two television fields in order to produce a full frame. The two fields are composed of only odd and only even lines, which are displayed one after the other but with the physical position of all the lines interleaving each other, hence interlace.[5]
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TV
This process divides and presents each video frame as two fields. Imagine a video frame being divided by the odd and even horizontal lines that make up the picture. The first field presents the odd lines; the second field represents the even lines. The fields are aligned and timed so that, with a still image, the human eye blends the two fields together and sees them as one. Motion in the image makes the fields noticeable. Interlace scanning allows only half the lines to be transmitted and presented at any given moment.

Audio and video glossary. 2014.

Look at other dictionaries:

  • interlaced scanning — noun : television scanning in which each frame is scanned in two successive fields each consisting of all the odd or all the even horizontal lines * * * interlaced scanning noun In television, the alternate scanning of an image in two sets of… …   Useful english dictionary

  • interlaced scanning — pakaitinis eilučių skleidimas statusas T sritis radioelektronika atitikmenys: angl. alternate line scanning; interlaced scanning vok. Zeilensprungabtastung, f rus. чересстрочная развёртка, f pranc. analyse à intercalage, f …   Radioelektronikos terminų žodynas

  • interlaced scanning — F/A/V the scanning process that combines odd and even fields of video to produce a full frame of video signal …   Audio and video glossary

  • scanning — Synonyms and related words: EDP, Stabreim, alliterative meter, analyzing, antispastic, automatic tracking, cadenced, classifying, collating, computer technology, computer typesetting, computing, dactylic, data processing, data retrieval, data… …   Moby Thesaurus

  • interlaced video — TV Process of scanning frames in two passes, each painting every other line on the screen, with scan lines alternately displayed in even and odd fields. NTSC video is interlaced; most computers produce a noninterlaced video signal. [See… …   Audio and video glossary

  • interlaced — adjective Date: 1935 of, relating to, or using a method of video scanning (as for television or a computer monitor) in which the odd and even horizontal lines of each frame are drawn on alternating passes …   New Collegiate Dictionary

  • alternate-line scanning — pakaitinis eilučių skleidimas statusas T sritis radioelektronika atitikmenys: angl. alternate line scanning; interlaced scanning vok. Zeilensprungabtastung, f rus. чересстрочная развёртка, f pranc. analyse à intercalage, f …   Radioelektronikos terminų žodynas

  • progressive scanning — noun : television scanning in which each successive line is scanned in sequence compare interlaced scanning …   Useful english dictionary

  • Cargo scanning — Intermodal Shipping Containers Cargo scanning or non intrusive inspection (NII) refers to non destructive methods of inspecting and identifying goods in transportation systems. It is often used for scanning of intermodal freight …   Wikipedia

  • Progressive Scanning — VP A method for displaying, storing, or transmitting moving images in which all the lines of each frame are drawn in sequence. TV A system of video scanning where lines of a picture are displayed consecutively (unlike interlaced) …   Audio and video glossary