Video Processing at Cheshire Engineering Corporation
Cheshire's Video and Image Processing Experience
Cheshire has very broad experience in the technical skills and
knowledge required to design and complete projects in today's video
processing and image capture environments.
Some examples of past and current projects are listed here.
Digital Video Recorders
We designed a solid state
digital video recorder to capture and MPEG compress live full
resolution NTSC or PAL video and audio, and store recordings on
Compact Flash media for playback on personal computers. The system
also includes playback within the unit to video and audio outputs.
We also designed a system to capture video using compact CCD
imagers, compress it, and record it in solid state memory or hard
disk. Video playback of the recording was also part of the system.
We designed a microprocessor
controlled consumer product to capture and compress stereo still
photos using CMOS imagers and record them in Compact Flash solid state
memory. The system includes a USB interface for connection to personal
computers, and a color LCD panel for picture display and user
We designed the HDReye™, a
digital camera designed for full-sphere panoramic high dynamic range
image capture. This product was originally created for a major
Hollywood special effects production company.
Also, for a company which was developing a digital video camera
system for the motion picture industry we consulted on the
architecture of the camera system and performed detailed simulations
of the image quality which may be obtained using various camera
High-definition Real-time Resolution
We not only designed this system, but
also provided on-going engineering support for the product line. This
included the design of occasional feature enhancements and new models
to meet new market conditions. It also included the design of a second
generation product targeted to the conversion of High Definition
Television (HDTV) signals, and included feature enhancements
specifically targeted toward use in converting film images to
videotape (for use with HD Telecine machines). Pictured is an add-in
upgrade for the converter which outputs D1 Digital Video.
NTSC/PAL Real-time Resolution Converter
A noteworthy product we designed is the
Real-Time Converter for High Resolution Graphic systems. The product
is a high-speed digital signal processor incorporating a custom ASIC
design as the digital filter element and an all-digital encoding
subsystem. Cheshire undertook the research that led to the conversion
and encoding architecture; we designed the electronic and software
systems which implement the product; we managed the team which
produced the ASIC; and we developed and implemented the user interface
for the product. The product is the subject of two U.S. patents.
Video Encoders and Sync Generators
We have also designed other products for video-related markets.
These include a Progressive/Interlaced scan converter, analog NTSC and
PAL video encoders, sync generators, and a High Definition analog
video color space transcoder.
Video Animation Controllers
For a video equipment company we developed
an animation controller for Video Tape Recorders (VTRs). These
products operate the controls of a VTR in a coordinated fashion so
that single-frame images can be recorded with absolute accuracy. This
allows computer or other animation to be recorded directly to tape.
The design is based on a microprocessor whose software incorporates
both the VTR control and the user interface.