# interlace

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## interlace

[¦in·tər¦lās]
(computer science)
To assign successive memory location numbers to physically separated locations on a storage tape or magnetic drum of a computer, usually to reduce access time.

## Interlace

An ornament of bands or stalks elaborately intertwined, sometimes including fantastic images.

## Interlace

the arrangement of yarns in woven, knitted, and curtain fabrics that determines their structure, appearance, and properties.

In woven fabrics, the interlace is always characterized by perpendicular systems of yarns: the warp and the filling. (In openwork interlace, there is a supplementary system of warp yarns, known as cross-woven threads.) The choice of an interlace depends on the intended use of the fabric and the type of yarn from which it is made.

There are conventional methods of graphically showing the interlace of a fabric on paper. A diagram of the interlace is made by a system of boxes: the black boxes (risers) show the crossings, or floats, of the warp yarns, and the white boxes (sinkers) show the floats of the filling yarns. Each vertical row of boxes depicts a wale, and each horizontal row, a course.

Every interlace is based on a definite number of warp yarns and filling yarns. The smallest number of yarns used before the order of their interlacing is repeated is called the repeat. The order of interlaces of warp and filling for each row may be expressed as a fraction, in which the numerator shows the number of consecutive yarns that the warp floats over and the denominator represents the number of consecutive threads that the filling thread floats over. The rows may differ from one another. They may be nonparallel to each other, forming a definite angle of displacement. The angle is included in the description of the interlace. Complex interlacing is characterized by warp and filling fibers in not just one but several layers. The number of possible interlaces is very great.

Depending on their complexity, interlaces are divided into basic (plain, twill, and satin), small-figured (dobby weaves), complex, and large-figured (Jacquard) weaves. Most widespread are basic interlaces.

The number of possible interlaces is limitless theoretically but, from a practical standpoint, is limited by technological feasibility, aesthetic considerations, and usefulness. Interlaces are reproduced by using the warp-shedding mechanisms of the loom: the simpler looms use sinker cams, and the more complex use dobby attachments or Jacquard machines.

Knit interlaces are characterized by the form of the yarn loops and their arrangement. The fabrics are divided into flat and warp knits. In flat-knitted fabric, the horizontal rows of loops are formed by a single strand, and in warp knitted fabric, by a great number of warp strands. Knit interlaces are distinguished according to structure as plain (jersey), ribbed, combined, and complex.

### REFERENCES

Stroenie i proektirovanie tkanei. Moscow, 1953.
Iudenich, G. V. Perepletenie i analiz tkanei. Moscow, 1968.

## interlace, entrelacs

an ornament with interlace
An ornament of bands or stalks elaborately intertwined, sometimes including fantastic images. Also see knot.

## interlace

To illuminate a screen by displaying all odd lines in the frame first and then all even lines. Interlacing uses half frames per second (fields per second) rather than full frames per second.

The interlace method was developed for TV broadcasting because the allotted bandwidth for TV channels in the 1940s was not sufficient to transmit 60 full frames per second. It was decided that interlacing with 60 half frames was visually better than 30 non-interlaced full frames.

Interlace Vs. Progressive Scan (I vs. P)
Interlaced screens display odd lines first: 1-3-5, etc.; then even lines: 2-4-6, etc. Non-interlaced "progressive scan" screens display lines consecutively: 1-2-3-4-5-6, etc.

All old tube TVs (CRTs) were interlaced. Very old CRT computer monitors were interlaced at their highest resolution and progressive at lower resolutions. Today, some digital TV standards are interlaced, such as the high-definition 1080i format, and 1080i material is commonly transmitted by the TV networks. HDTV sets support both interlace and progressive scan methods (see HDTV and DTV). See deinterlace, vertical scan frequency, 4K 3D TV and interlaced GIF.

References in periodicals archive ?
The fantastic narrative of the Furioso, as filtered through the complex evolutions of Ariostan interlace, thus become the vehicle of an indirect, sheltered commentary not only on the general political crisis of the day, but also on the specific complicity of the papacy in that crisis.
We are thrilled that Interlace Medical is working with us," says Kim Prendergast, Executive Director of the MetroWest Free Medical Program.
Interlace has created the infrastructure and implementation methodologies necessary to provide companies with state-of-the-art transaction management services utilizing XML standards and webMethods software.
Having a MyoSure system in place at a hospital is really a win/win situation for patients and doctors, as well as the facility," says Bill Gruber, President and CEO of Interlace Medical.
In making the announcement, Yaron Inbar, President of Interlace, commented, "Etienne's background and experience are a great asset to us as we expand our service offerings.
John McDonough is one of the most successful and influential executives in New England, and Interlace Medical is pleased to have him join our board," stated Bill Gruber, President and CEO of Interlace Medical.
March 13 /PRNewswire/ -- Interlace Corporation (formerly PanamaTech), a leading supplier of web-based business integration services, has launched a new website located at http://www.
March 11 /PRNewswire/ -- PanamaTech, a leading provider of business integration services, announced today that it has changed its name to Interlace Corporation.
8 /PRNewswire/ -- The promise of digital high definition systems, created to work seamlessly in either 24-frame progressive or in 60/50 interlace to fulfill the needs for television, feature length movie and documentary, sports and news production, will be realized at NAB 2000 in April with Sony's introductions of the new HDW-F900 camcorder, HDC-900/950 studio and portable cameras and the HDW-F500 studio VTR.
With a simple jumper set, the ICX074AL/AK can run in the standard interlace format, enabling standard television monitors to take advantage of the high-quality output from these groundbreaking CCDs.
Its Display IP includes scalable display pipelines supporting PIP, overlay, advanced de-interlacing and image enhancement enabled by IP including the PowerVR TVE digital TV encoder, the PowerVR PDP pixel display pipeline family, the PowerVR I2P interlace to progressive cores, and the PowerVR IEP Image Enhancement Processor.
Tailor-made for a wide range of newsgathering assignments, the cost-efficient, low-power AJ-SPC700 combines a high-performance 2/3" 520,000-pixel, IT 3-CCD camera with 60 fields interlace recording in 25Mbps DVCPRO/DV and 50Mbps 4:2:2 DVCPRO50 format on a P2 card.

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