Innovative Custom Logic Solutions for Professional Video Cameras
Professional digital video cameras capture analog video and audio content, convert the data from analog to digital, and output digital video streams in standard-definition (SD) or high-definition (HD) digital television (DTV) formats. The charge-coupled device (CCD) creates an analog representation of the original image and includes an analog-to-digital converter (ADC), providing a digital representation of the image for further processing. The digital audio and video are often compressed and sent separately from the camera. The flexibility of custom logic solutions allows any compression technique to be implemented, for example MPEG-2 or DV-50 for video, MPEG-2 Advanced Audio Coding (AAC), or Dolby Digital for audio.
Figure 1 shows a typical example of an Altera® custom logic solution for a professional digital video camcorder. Wired and wireless cameras include similar function blocks; wired cameras do not implement recording circuitry, as the digital data is sent to separate recording equipment such as a videotape recorder (VTR) or video disk recorder (VDR).
Figure 1. An Altera Custom Logic Solution for Professional Video Cameras
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Examples of Altera intellectual property (IP) from the IP MegaStoreTM used in video cameras include:
Altera's Solutions for Professional Video Cameras
The feature-rich architecture of Altera's Stratix® series FPGAs provides an excellent solution for developing digital video production and delivery equipment.
Wireless Professional Video Cameras
Utilizing the latest wireless orthogonal frequency division multiplexing (OFDM) technology, professional video cameras powered by Altera Stratix II devices are the ideal solution for live sports broadcasts. The powerful DSP features of Stratix II devices support fast Fourier transform (FFT) processing in an OFDM system. Cameras so equipped allow cameramen the mobility they need to capture the action—without the limitation of cables or saving to tape locally. Wireless broadcast-quality cameras give television broadcasters access to better action shots with fewer cameras—bringing the atmosphere of live-action right into the home.
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