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Cypress Announces Interference Avoidance Technology for WirelessUSB Devices
Patent-Pending Technology Keeps WirelessUSB Range Robust
in the Presence of Heavy Interference
SAN JOSE, Calif.—(BUSINESS WIRE)—March 8, 2004—
Cypress Semiconductor's (NYSE:CY) WirelessUSB(TM) LS radio system
on a chip performs reliably at 10 meters in the presence of heavy
interference from multiple 2.4 GHz devices, according to recent
interference immunity tests conducted by Cypress. The devices employ a
unique approach announced today for handling 2.4 GHz wireless data
packets that has been developed by Cypress to ensure reliable data
communication in electrically "noisy" environments.
This patent-pending approach combines bi-directional Direct
Sequence Spread Spectrum (DSSS) data transmission techniques,
pre-defined pseudo-noise codes and dynamic channel switching to create
a frequency-agile solution with excellent processing gain for
guaranteed wireless data delivery. The technology is embedded in
Cypress's complete line of WirelessUSB products, including its
recently announced WirelessUSB LR line, which features an operating
range of up to 50 meters or more in industrial settings.
Cypress's tests show that WirelessUSB LS is able to maintain its
robust 10-meter range while in close proximity to three 802.11
networks and two Bluetooth devices continuously transferring files,
two cordless phones in operation and an active microwave oven. The
results of these tests are being presented this week by Cypress at the
Wireless Systems Design Conference in San Diego, Calif.
"Immunity to interference is critically important for short-range
wireless devices, including PC keyboards, mice and video game
controllers, where dropped packets can mean lost data, causing
frustration for PC users and video game enthusiasts," said Rich
Kapusta, director of wireless marketing for Cypress's Personal
Communications Division. "These tests further validate that
WirelessUSB is the most robust, 2.4 GHz solution on the market -- and
that can help manufacturers reduce support costs and incur fewer
product returns."
More details about Cypress's interference avoidance technology can
be found online at
http://www.cypress.com/support/link.cfm?mr=immunity.
Featuring a highly integrated radio transceiver plus digital
baseband, WirelessUSB LS is a single-chip solution that enables
designers to significantly decrease development time, component count
and system cost. WirelessUSB devices are also noted for their very low
standby power consumption. They have a standby current of
approximately 0.25-microamp with up to 0 dBm output power, which
translates into long battery life for a typical keyboard, mouse or
gamepad. In addition, WirelessUSB LS features a data transmission rate
of up to 62.5 kbps with an average latency of below four milliseconds.
About Cypress
Cypress Semiconductor Corp. (NYSE:CY) is Connecting From Last Mile
to First Mile(TM) with high-performance solutions for personal,
network access, enterprise, metro switch and core
communications-system applications. Cypress Connects(TM) using
wireless, wireline, digital and optical transmission standards,
including USB, Fibre Channel, SONET/SDH, Gigabit Ethernet and DWDM.
Leveraging its process and system-level expertise, Cypress makes
industry-leading physical layer devices, framers and network search
engines, along with a broad portfolio of high-bandwidth memories,
timing technology solutions and reconfigurable mixed-signal arrays.
More information about Cypress is accessible online at
www.cypress.com.
Cypress and the Cypress logo are registered trademarks of Cypress
Semiconductor Corporation. "Connecting From Last Mile to First Mile,"
"WirelessUSB" and "Cypress Connects" are trademarks of Cypress. All
other trademarks are the property of their respective owners.
Contact:
Cypress
Ed Rebello, 408-545-7665
EWR@cypress.com
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