upconvert


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Related to upconvert: upscaling

upconvert

To convert one set of values to a higher set of values. For example, HDTV sets upconvert broadcast TV (480i) and DVD content (480i or 480p) to the highest format the set supports (720p, 1080i or 1080p). A/V receivers also provide upconversion.

Also called "upscaling." In a modern home theater, the DVD player, A/V receiver and HDTV provide upconversion capabilities. If the units are all of similar quality, it may make little difference which one performs the upconversion. For example, if the HDTV does the best job, the DVD and receiver upconversion can be turned off. Contrast with downconvert.


From 480i to 720p
To convert a 480i signal to 720p or 1080p, the first step is to deinterlace the 480 lines from 480i to 480p and then upconvert to the higher resolution. See deinterlace.







Upconversion Is Critical
Converting a lower resolution to a higher one is more critical than the other way around, and the quality of algorithms differs widely. These examples are images upscaled using a low-quality circuit (top) and the higher-quality circuit (bottom) in Anchor Bay's VP50Pro video processor. (Image courtesy of Anchor Bay Technologies, Inc., www.anchorbaytech.com)
References in periodicals archive ?
For RF and microwave applications, the noise signal must be upconverted.
The interferer is upconverted again and subtracted at the output of the LNA.
The samples were excited with the second harmonic light with excitation wavelength 420 nm, and the 490 nm fluorescence from the samples was upconverted by mixing it with the fundamental light pulse (gate pulse ~ 840 nm).
These random symbols are upconverted to radio-frequency (RF) domain with corresponding in-phase and quadrature signals [25] that are denoted by [S.sub.I](t) and [S.sub.Q](t).
Also, Norsat is a subcontractor to Harris to provide Ku-Band SSPAs for a system that upconverts and amplifies L-Band composite signals.
This process upconverts the sampling rate to 80 GS/s.
If the ingested content is in SD, it's automatically sensed and upconverted to HD and vice-versa.
After this step, the digital output signals can be converted to analog signals, which are then upconverted to the 5 GHz band, amplified and transmitted through an antenna.
At the IF output, the combination of [R.sub.L1]-[C.sub.L1] and [R.sub.L2]-[C.sub.L2] forms a low pass filter (LPF), which filters out the high-order spurs at the output such as the upconverted frequency component sin([[omega].sub.RF] + [[omega].sub.LO]).
The complex baseband signal [a.sub.RF](t) is frequency upconverted to a desired carrier frequency [f.sub.c] in the transmitter using a complex mixer.
This allows a high probability for the [Ln.sup.3+*] ion to absorb an additional photon (Scheme 1, (2)) and emit an upconverted photon (Scheme 1, (3)) before either nonradiative relaxation (Scheme 1, (4)) or radiative recombination occurs (Scheme 1, (5)).