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Picture Quality Restorer Model HQ2000
Picture Quality Restorer Model HQ2000
Description - PDF Spec Sheet

Xintekvideo's Picture Quality Restorer Model HQ2000 is a state of the art signal processing system that essentially removes all electrical or ignition-type impulse noise from NTSC color television signals. In addition it significantly reduces random noise and other interference. It is particularly effective in reducing satellite or FM link threshold noise that normally appears as "sparkles" or streaks as well as thermal noise. It is, in effect, a means of extending threshold in FM links. The Model HQ2000 is also particularly useful for cleaning up off the air signals from distant TV stations.

Aside from the standard analog-to-digital and digital to analog conversion operations, the system signal processing is all digital. Every video pixel is analyzed and a differentiation between video and noise is made based on the statistical characteristics of unwanted noise and errors. Sophisticated circuits are used to analyze the video signal and search for impulse noise using multidimensional correlation techniques. To differentiate between impulse noise and moving video details motion is also detected using a number of video frames for temporal correlation detection. When the circuits determine that a particular video pixel has noise perturbation or is in error, and the motion circuits determine that there is no motion in the vicinity of the error, that pixel is replaced with a value predicted from spatio temporal neighboring pixels. All signal processing is performed on the composite color signal, thus avoiding the introduction of video impairments due to color decoding and re-encoding. The Model HQ2000 works exactly like the Model INR2000 in removing impulse noise.

Additional circuits in the Model HQ2000 provide random noise reduction of up to 9 dB. Noise reduction is achieved using adaptive motion compensated recursive filtering techniques which have been perfected by Xintekvideo over the course of the last 10 years. A Sensitivity control is provided to match the noise reduction operation to different types of conditions.

The unit is fully self contained. It takes a baseband NTSC color video signal at 1 volt peak to peak and it outputs a processed NTSC color video signal at the same level as the input. Hardwired bypass occurs in the event of power loss.

Input: NTSC color video signal, 1 volt pp into 75 Ohms
Return loss > 40 dB
Output: NTSC color video signal, 1 volt pp into 75 Ohms
Return loss > 35 dB
Video Specifications:
Frequency Response: 0.5 dB to 4.5 MHz
Non-Linearity: < 2%
Differential Phase < 1 plus quantizing effect
Differential Gain: < 1% plus quantizing effect
K Factor with 2T Pulse: Better than 1%
System Delay: 1 TV frame
Temperature: 32 F to 100 F, Ambient
Humidity: 10% to 90% non-condensing
Height: 1.75"
Width: 19"
Length: 12"
Weight: 7 lbs.
Power: 90 - 240 volts AC, 50/60 Hz, 25 Watts
Specification subject to change without notice.
Xintekvideo Products
Transcoders & Converters
SDI-313 - Universal Transcoder
SDI-1 - D1 to NTSC Converter
SDI-3 - Analog to SDI Converter
SDI-110 - SDI to Analog Converter
SDI-310 - NTSC to D1 Converter
SDI-330 - Noise Reducer/SDI Converter
SDI-333 - Universal SDI Converter
Video Processors
INR 2000 - Impulse Noise Eliminator
INR ES - Impulse Noise Reducer
HQ 2000 - Picture Quality Restorer
CF110 - Co-Channel Filter
DP2000 - Drop-Out Corrector
Video Improvement Processors
VP10A - Random Noise Reducer
VP10C - Components Noise Reducer
SDI-10 - Random Noise Reducer
VP55A - Noise Reducer/Ghost Canceler
VP100 - Video Processor/Noise Reducer
VP900A - NTSC Color Corrector
VP900D - NTSC/PAL Color Corrector
VP1000 - Picture Quality Restorer
VP3000 - Pre-Compression Processor
HD-900M/950M - High Definition Color Corrector
SDI-900*-Color Corrector/Video Processor
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