Method and apparatus for sharing portable terminal in CDMA system and mobile RFID system

• US 20070120679A1
• Filed: 11/16/2006
• Published: 05/31/2007
• Est. Priority Date: 11/29/2005
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Choi, Gil-Young, Chae, Jong-Suk, Pyo, Cheol-Sig, Shin, Chan-Soo, Choi, Won-Kyu, Son, Hae-Won
• Granted Patent: US 7,933,577 B2
• Time in Patent Office: Days
• US Class Current: 340/572.700
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

Provided are a method and apparatus for sharing a portable terminal in a Code Division Multiple Access (CDMA) and a mobile Radio Frequency Identification (RFID) system. The portable terminal includes: a CDMA mobile station system for performing CDMA communication; a mobile RFID system for performing a passive RFID reader function; a switching unit for switching an antenna to any one between the CDMA mobile station system and the mobile RFID system; and a control unit for controlling the switching unit to connect the antenna to the CDMA mobile station system when the portable terminal transmits/receives a signal to/from the base station, or connect the antenna to the mobile RFID system when the portable terminal transmits/receives a signal to/from an RFID tag.

Claims

1. A portable terminal, comprising:

a Code Division Multiple Access (CDMA) mobile station system for performing CDMA communication;

a mobile Radio Frequency Identification (RFID) system for performing a passive RFID reader function;

a switching means for switching an antenna to any one between the CDMA mobile station system or the mobile RFID system; and

a control means for controlling the switching means to connect the antenna to the CDMA mobile station system when the portable terminal transmits/receives a signal to/from the base station, or connect the antenna to the mobile RFID system when the portable terminal transmits/receives a signal to/from an RFID tag.

2. The terminal as recited in claim 1, wherein the control means controls the switching means to connect the antenna to the mobile RFID system while the CDMA mobile station system is in a sleep mode.

3. The terminal as recited in claim 1, wherein the switching means is a Single Pole Double Throw (SPDT) switch.

4. A method for sharing a portable terminal in a Code Division Multiple Access (CDMA) mobile station system and a mobile Radio Frequency Identification (RFID) reader system, comprising the steps of:

a) when an operation of the mobile RFID reader system is requested, checking whether the CDMA mobile station system is in a sleep mode;

b) when the CDMA mobile station system is in the sleep mode, supplying power to the mobile RFID reader system, operating the mobile RFID reader system and receiving tag information; and

c) when the tag information is received, cutting off supplying power to the mobile RFID reader system and performing related operation based on tag information.

5. The method as recited in claim 4, wherein the tag information reception step b) includes:

b1) when the CDMA mobile station system is in the sleep mode, determining whether remaining sleep time is enough to operate the mobile RFID reader system and recognize a tag; and

b2) when the remaining sleep time is enough, connecting an antenna of the portable terminal to the mobile RFID reader system and trying to recognize the tag.

6. A method for sharing a portable terminal in a Code Division Multiple Access (CDMA) mobile station system and a mobile Radio Frequency Identification (RFID) reader system, comprising the step of:

a) controlling a switching means to connect an antenna to the mobile RFID system when the portable terminal transmits/receives signals with an RFID tag, and connect the antenna to the CDMA mobile station system in a section that the portable terminal communicates with the base station,

wherein one antenna is shared according to a time-division method.

7. The method as recited in claim 6, wherein the switching means is a single pole double throw (SPDT) switch.