Project Files
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 Analog Devices® DSP
Designs |
Blackfin
Bolton Engineering has designed a wide variety of video,
networking and audio equipment using the
Analog Devices Blackfin® processors. For many of these
projects, Bolton Engineering has brought up Uboot and Linux,
and/or written custom driver-level software. Bolton
Engineering is familiar with all the Blackfin on-chip
peripherals, and has interfaced them to a variety of A/Ds,
D/As, audio converters, cameras, video systems and custom
hardware.
TigerSHARC
Bolton Engineering has used the
Analog Devices TigerSHARC® processors in several
communications projects requiring extremely high processing
bandwidth. The TigerSHARC processors have up to 24Mbits of
on-chip memory and provide peak performance of over one
billion floating-point operations per second. Tightly
integrated link ports connect multiple TigerSHARC processors
together with up to one Gbyte/second bandwidth.
SHARC
Bolton Engineering has designed several audio and
communication systems using the
Analog Devices SHARC® processors.. The Analog Devices
SHARC DSPs are some of the most cost-effective and widely
used floating-point processors in the industry, with peak
processing powers exceeding 2400MFLOPS/second.
AD-21xxx
The
Analog Devices AD-21xxx family encompass a wide range of
DSPs that range from highly optimized single-application
parts to highly-integrated general purpose mixed-signal
devices with integral A/D converters. Bolton Engineering has
designed projects using these parts ranging from dedicated
motor controllers to spread-spectrum sonar. |
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A client was developing a multi-DSP
radio system and needed a way of getting large amounts of
data out of their experimental setup. Bolton Engineering
took it’s existing Blackfin Stamplet Board and developed a
custom application to collect data over the Blackfin’s high
speed PPI. Bolton Engineering brought up Linux, configured
the Blackfin PPI port to execute chained DMA transfers and
used system calls to execute the TCP/IP transfers. The
client was able to transfer data into their Windows
application with a minimum of effort, at rates exceeding
30Mbits/second.
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Redshift Systems had developed a radical new technology
that greatly reduced the cost of manufacturing Thermal
Imaging Cameras (TICs). TICs are used in surveillance, and
by emergency response personnel to identify people and doors
in smoke filled buildings. Bolton Engineering developed a
miniature Digital Signal Processor (DSP) board based on the
Analog Devices Blackfin that incorporated all video capture
and display electronics.
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Developed a miniature Dual Blackfin
Board that used two capacitance-based fingerprint
identification chips to take a rapid succession of images to
detect speed of movement.
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Palomar Medical Technologies was developing a handheld
cosmetic laser surgical device and wanted to provide a real
time enhanced image of the patient’s internal vein
structure. The system had to fit into an existing handpiece.
The enhancement imaging software required significant
processing power. Bolton Engineering Inc designed the
Medical Image Processor using two Analog Devices Dual
Blackfin Processors, each with its’ own SDRAM and Flash
memory systems
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Phased Array Microphones greatly
improve speech recognition in speech-to-text applications by
intelligently combining signals from several fixed-position
microphones to “focus in” on the speaker.
Acoustic Magic had been contracted to develop a
customized low-power version of an existing product as part
of portable military language translator. Bolton Engineering
used an Analog Devices AD-21xxx series processor to create
this product for Acoustic Magic.
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MP3 Encoding Engine
A client had a unique product concept
to automatically convert CDs to MP3 files. Bolton
Engineering implemented a Linux-based system using an Analog
Devices Blackfin® processor, 8megabytes SDRAM, 8megabytes
Flash and a high-speed IDE interface. The board provided
over 1200MIPS processing power, and included a full-speed
v2.0 USB host controller to transfer the encoded files to
standalone MP3 players.
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This unique product uses a
hardware/software model to calculate a predistortion signal
to cancel out the distortion introduced by an RF power
amplifier. This unique system incorporates a high speed
TigerSHARC floating point Digital Signal Processor (DSP)
plus a client-designed Programmable Logic Device (PLD)
computational engine that work in unison to calculate a
predistortion signal to cancel out the distortion introduced
by the RF power amplifier.
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Spread Spectrum Sonar
An MIT (Massachusetts Institute of
Technology) lab had built a first generation spread spectrum
sonar system using an Analog Devices AD21xxx series Digital
Signal Processor (DSP). The professor was planning to take
the system on its first voyage and needed a more robust
integrated system. Bolton Engineering built the system onto
two 1.5” x 3.0” stacked boards, a digital board with the DSP,
Flash memory, signal conditioning electronics, real time
clock, A/D converter and power supplies, and an analog board
with the high power sonar transducer driver.
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A client was developing a software
radio for base station use. They had done all the system
calculations to determine how the signal path should
operate, and what kind of signal processing they required.
They had excellent in-house expertise for the RF design, but
did not have sufficient in-house experience to do the
digital design. Bolton Engineering designed the system
using an Analog Devices Blackfin Digital Signal Processor (DSP)
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Bolton Engineering was working on
several Blackfin projects and needed a miniature development
board that could be used to jump-start software development.
Two of the projects needed to run Linux, and also required
significant programmable logic content. Using the
Analog Devices Blackfin Stamp board as a starting point,
Bolton Engineering designed the Blackfin Stamplet.
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Consumer and Computer
