The concept of splitting a TV picture into two fields of odd and even lines.
The process of combing two picture fields to produce a full frame. Field one scans the odd lines, and field two scans the even. The physical position of the fields interleave with each other to create the full frame.
Scan method used by the traditional television technology and the 1080i HDTV format. As opposed to progressive scanning in which the CRT's electron beam scans or "paints" all lines at once, interlaced scanning TVs paint odd-numbered lines in succession, then go back and fill in the remaining even-numbered lines.
The technique used in NTSC video in which the odd-numbered scanning lines of the video picture are displayed in one pass from the top of the screen to the bottom, and the even-numbered scanning lines are displayed on the second pass, to form a complete image. Contrast with "progressive scanning."
"Drawing" a TV picture every other line at a time. Odd-numbered lines are drawn, then even-numbered lines. They're drawn, or scanned, so quickly on the TV screen that you see a complete image. Pro: Reduces the bandwidth needed for a transmission because only half of the image is being broadcast at a time, so a larger and more detailed image can be transmitted. Con: Subject to "artifacts" and jagged diagonal lines.
The conventional DVD interlaced picture that alternates the odd-numbered lines with the even-numbered ones, showing half of the picture at each pass, at a refresh rate of 30 times per second. See also Progressive Scanning.
Scanning by splitting the TV frame into 2 or more fields with the resulting frame raster formed by interleaving the lines of the split fields. Originally devised to reduce transmitted TV picture bandwidth.
Some HD televisions and most onventional televisions use the "interlace" method of scanning, in which the picture is transmitted and painted on the screen in two passes. In the first pass, every other line is painted and in the second, the lines in between. Some display types, such as LCD, plasma and DLP cannot display directly images transmitted as interlaced signals and must convert them to a progressive format prior to their display.
A scanning technique to minimize picture flicker while conserving channel bandwidth. Even and odd numbered lines are scanned in separate fields both of which when combined paint one frame or complete picture.
A video image consists of multiple frames. Frames are multiple lines of video put together so closely they appear as a solid picture. Interlaced scanning fills in odd lines, then the even lines, to produce a frame of video.
The process of scanning a single image ("frame") of a moving picture sequence in two sequential stages, where each stage produces a scanned image ("field") comprising one-half of the total number of horizontal lines used in the scanning process. The lines of each field alternate. It is a technique that is used in conventional television systems (e.g. PAL) to reduce the transmission bandwidth by exploiting the properties of the human eye.
Interlaced scanning is a method based on the principle that the screen shows every odd line at one scan of the screen and then all the even lines in a second scan. There are 30 frames shown per one second and this can make larger screen flicker, which is the usual problem with interlacing. However, LCD and plasma screens cannot display interlaced signals and must first convert them to a progressive format and then they can display the transmitted images.
When a TV receives an interlaced broadcast, the set draws half a video frame by painting the odd rows on the screen first. A split-second later, the TV fills in the other half by scanning the even rows. All analog broadcasts and some digital ones are transmitted in an interlaced pattern. Splitting an image in two sometimes causes flickering and other problems in traditional televisions. Sony's Hi-Scan® screen has 1,080 lines. The number of active scan lines provides a good initial test for a screen's clarity, called its "native resolution," and tells you whether the set can display high-definition broadcasts in true high-definition resolution. (See active scan lines.)
Scanning system in which two fields of lines are interlaced as alternating rows of lines. A beam reads each alternating field separately every 1/60 second, produces full frames (one reading of each field) every 1/60 second.
A scanning process for reducing image flicker in which the distance from center to center of successively scanned lines is two or more times the nominal line width, and in which the adjacent lines belong to different fields.
A scanning process in which each adjacent line belongs to the alternate field.
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. This type of television picture creation was proposed in the early days of television to have a minimum amount of information yet achieve flickerless motion.
You can set-up a channel that will be selected each time the TV is switched-on. The process of scanning two fields of video then combining (interlacing) them to make one frame...
This process breaks each frame into two fields, each with half of the information for that frame. Then, every other field is transmitted and "interlaced" together to create frames. This is how NTSC and certain DTV formats are broadcast, but may cause noticeable flicker in some instances. Interlaced scanning required less bandwidth than progressive scanning for an equivalent picture quality.
A technique used to scan an image to the screen by skipping every other line on the first pass and filling in the other lines on the second pass. This usually causes flickering.
The opposite of Progressive Scanning. The technology behind the conventional television signal, which shows half of a frame's scanning lines in each 1/60 second. First the odd numbered lines are displayed, then the even-numbered lines.
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.
A scanning process in which all-odd lines then all even lines are alternately scanned. Adjacent lines belong to different fields and are collected at different times. So, a moving object may appear in a slightly different location on odd/even fields.
A method of displaying images from a video signal on a television screen. With interlaced scanning, half the vertical lines (odd lines) on the screen are filled in first, then the other half (even lines) for a complete image. Also see " progressive scanning".
Refers to the process of re-assembling a picture from a series of electrical signals. The frame/picture is made up of two fields: The first field has a number of odd lines and the second field has the even lines. The odd lines are scanned on the screen in 1/60th of a second and the even lines follow in the next 1/60th of a second. This presents an entire frame/picture in 1/30th of a second.
Scans the odd-numbered scan lines (odd field) first, then the even-numbered scan lines (even field). The picture area is scanned 60 times per second but because only half of the lines are scanned at one time, the total screen area, called the frame, is scanned at a frame rate of 30 frames per second.