Invention Grant
- Patent Title: Methods and apparatus for arbitrary antenna phasing in an electronic article surveillance system
- Patent Title (中): 电子物品监控系统中任意天线定相的方法和装置
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Application No.: US12363873Application Date: 2009-02-02
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Publication No.: US08049598B2Publication Date: 2011-11-01
- Inventor: Jeffrey T. Oakes , Thomas J. Frederick , Richard L. Herring
- Applicant: Jeffrey T. Oakes , Thomas J. Frederick , Richard L. Herring
- Applicant Address: US FL Boca Raton
- Assignee: Sensormatic Electronics, LLC
- Current Assignee: Sensormatic Electronics, LLC
- Current Assignee Address: US FL Boca Raton
- Agency: The Small Patent Law Group
- Agent Dean Small
- Main IPC: H04Q5/22
- IPC: H04Q5/22

Abstract:
A method for controlling electronic article surveillance (EAS) transmissions is described. The method includes calculating system parameters associated with one or more of a desired frequency a desired duty cycle, and a desired phase difference between antennas for a transmitter, and initializing a counter with a value based on the system parameters. The method also includes comparing a count from the counter to the system parameters, and modulating EAS transmission signals based on the comparison between the count and the system parameters. An EAS transmitter and an EAS system are also described.
Public/Granted literature
- US20090160650A1 METHODS AND APPARATUS FOR ARBITRARY ANTENNA PHASING IN AN ELECTRONIC ARTICLE SURVEILLANCE SYSTEM Public/Granted day:2009-06-25
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