Digital Processing of Analog Television
نویسنده
چکیده
NTSC composite color video is currently one of the most common formats of video broadcasting. Although the signal is analog, it can be decoded almost entirely digitally. Analog decoders offer limited video quality and require adjustments. Using digital techniques to implement NTSC decoding offers minimum adjustments and excellent video quality. This project presents the building blocks of digital processing of an NTSC color signal. The processing stages include sampling the analog signal, synchronization information detection, luminance and chrominance separation, color demodulation, and interlace to progressive conversion for display on PC monitor in RGB color space.
منابع مشابه
Advantages of Dsp Camera Processing
The implementation of DSP (Digital Signal Processing) to the television, CCTV, medical, industrial and other cameras caused the numerous benefits to the camera picture processing. Even though the camera CCD (Charge Coupled Device) block is basically an analog device and a part of video signal processing is still performed in the analog domain the A/D converter at the CCD output transforms video...
متن کاملA Single-Chip Tuner for DVB-T
A new architecture is presented for a single-chip tuner for digital terrestrial television, based on existing double conversion and direct conversion topologies. The new design forms part of a mixed-signal Digital Video Broadcasting–Terrestrial (DVB-T) receiver system, employing digital signal processing at baseband to ensure minimal performance requirements for the analog circuitry. To evaluat...
متن کاملThe Transition to Digital Television
This paper studies the role of economic policy for the transition from analogue to digital television, with particular attention to the switch off of the analogue terrestrial signal. The analogue signal cannot be credibly switched off until almost all viewers have migrated to digital, due to the policy objective of universal access to television. But before switch off, only part of the populati...
متن کاملDigital Amateur TeleVision (D-ATV)
In this article, we present a Digital Amateur TeleVision (D-ATV) transmission system. Its signal can be received by cheap set-top boxes available for less than 150$. It offers a wide user-selectable trade-off between signal bandwidth and picture quality, and at 4.5 MHz -40 dB bandwidth achieves better picture quality than analog systems.
متن کاملDigital Compensation of Receiver Clipping for Dvb Reception on Low-power Mobile Phones
Battery life-time is a critical issue for digital television (DVB) viewing on mobile phones. The number of quantization steps used in the analog-to-digital converter (ADC) is an important factor in the total power consumption of a DVB receiver. The OFDM signals require a large resolution of the ADC. We propose a digital post-processing method that allows reduction of the peak-to-average margin ...
متن کامل