[February 17, 2005] Comarco Awarded New Patent on Core Power Adapter Technology Tweet IRVINE, Calif., Feb. 17 /PRNewswire-FirstCall/ -- Comarco, Inc. , today announced it has been granted a patent by the U.S. Patent & Trademark Office (USPTO) that protects ChargeSource's thought leadership in charging technology. The patented technology enhances performance for portable power adapters by canceling the common mode noise within the adapter enabling the design of smaller and lighter mobile power adapters for consumers. "Each new patent award enhances our ability to design the smallest, lightest and most powerful portable power products in the industry as it builds our intellectual property portfolio," said Tom Schmidt, vice president and general manager of Comarco's ChargeSource business unit. "ChargeSource's leadership in the portable power marketplace is dependent upon our ability to innovate and develop more powerful and efficient products. The granting of this patent validates our technology leadership, reflects our history of innovation, and protects our intellectual property." About the Patent Comarco's U.S. patent (#6850423) is directed toward the electromagnetic interference (EMI) control scheme of the ChargeSource power adapter. This technology allows for a dramatic reduction in the size and weight of an EMI filter system. This patent includes 23 claims covering among other things: -- A common mode noise cancellation circuit, comprising of one or more switching devices to receive DC voltage; -- A low-loss, low noise triac enabled multiplying circuit to receive an AC input and a DC firing signal; -- An AC to DC power supply; -- A method to cancel common mode noise by generating a common mode noise waveform from one or more switching devices, transmitting the common mode noise waveform to a transformer in a circuit and creating a common mode cancellation waveform. About ChargeSource ChargeSource, a division of Comarco, is a leading provider of mobile power products for laptop computers, cellular telephones, DVD players, digital cameras, digital camcorders, and other handheld devices. For more information about Comarco, go to http://www.comarco.com/, for more information about ChargeSource, go to http://www.chargesource.com/. About Comarco Based in Irvine, Calif., Comarco is a leading provider of wireless test solutions for field test applications, wireless emergency call box systems, and ChargeSource(R) universal mobile power products. Comarco's Seven.Five(R) wireless test system for field test applications allows cellular telephone operators to measure and improve the quality of service for their cellular phone networks. Seven.Five's open architecture supports both current cellular operating system technologies and the new 3G systems being implemented worldwide. Comarco's call box systems are in place on many major highway systems throughout the United States and are used by motorists to contact local authorities for rapid assistance. More information about Comarco's product lines can be found at http://www.comarco.com/ and http://www.chargesource.com/. Company Contacts: Investor Contact: Tom Franza Dan Lutz Douglas Sherk/ President and CEO Vice President and CFO Jennifer Beugelmans Comarco, Inc. Comarco, Inc. Founder & CEO/SVP 949-599-7440 949-599-7556 EVC Group, Inc. [email protected] [email protected] 415-896-6820 [email protected] Comarco, Inc. CONTACT: Tom Franza, President and CEO, +1-949-599-7440, [email protected], or Dan Lutz, Vice President and CFO, +1-949-599-7556, [email protected], both of Comarco, Inc.; or investors, Douglas Sherk, Founder& CEO, [email protected], or Jennifer Beugelmans, SVP, both of EVC Group,Inc., +1-415-896-6820, for Comarco, Inc. Web site: http://www.chargesource.com/ Web site: http://www.comarco.com/ [ Back To TMCnet.com's Homepage ]