746 S Burlington Ave SUITE 302, Los Angeles 90057 (213) 480-8775 (Fax)
Languages:
English
Hospitals:
746 S Burlington Ave SUITE 302, Los Angeles 90057 Silver Lake Medical Center 1711 West Temple St, Los Angeles 90026
Apparatus And Method For Deciding Entrance And Exit Of Moving Objects
US Patent:
2012027, Nov 1, 2012
Filed:
Feb 29, 2012
Appl. No.:
13/407869
Inventors:
IN CHUN LEE - Los Angeles CA, US
International Classification:
G01J 1/44
US Classification:
2502141
Abstract:
Present invention proposes an apparatus and method for deciding entrance and exit of moving objects using two or more transmission units and only one reception unit which are installed on a gateway of a space to be measured. The two or more transmission units comprises a first transmission unit installed on one side surface of a gateway of a space to be measured to emit a first pulse in a first period; a second transmission unit installed in an inside direction of the space on the installation surface of the first transmission unit to emit a second pulse which has the first period and a phase that is different from a phase of the first pulse.