Cellular phone, battery pack used for the cellular phone and connection connector

• US 20050079820A1
• Filed: 10/07/2004
• Published: 04/14/2005
• Est. Priority Date: 10/08/2003
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Yamashita, Hajime
• Application Number:
  US10/960,308
• Publication Number:
  US 20050079820A1
• Time in Patent Office: Days
• US Class Current: 455/41.200
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• 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
• CPC Class Codes: G06K 7/10336 the antenna being of the near field type, inductive coil
• CPC Class Codes: H01Q 1/22 by structural association with other equipment or articles
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/27 Spiral antennas
• CPC Class Codes: H04B 1/3883 Arrangements for mounting batteries or battery chargers
• CPC Class Codes: H04M 1/0262 for a battery compartment
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: H04M 2250/14 including a card reading device

Abstract

The present invention realizes a small thickness and a low price while maintaining the sensitivity of an RFID antenna when setting a non-contact IC card function in a cellular phone. An RFID antenna is mounted on a battery pack of a cellular phone. In this case, by maintaining a predetermined clearance (1 to 2 mm) between the antenna and a battery cell, bad influence of a metallic plate of the battery cell is eliminated. Moreover, in the case of electrical connection with an RFID-function circuit portion, it is unnecessary to prepare a special connector by using a battery connection connector.

Claims

1. A cellular phone including a non-contact IC card function and a battery pack having a built-in antenna for the non-contact IC card function.

2. The cellular phone according to claim 1, further including a connection connector of the batter pack, wherein the antenna is connected with an electric circuit portion for the non-contact IC card function via the connection connector.

3. The cellular phone according to claim 1, wherein a battery cell of the battery pack and the antenna have a predetermined clearance.

4. The cellular phone according to claim 1, further including the reader/writer function of a non-contact IC card, wherein an antenna for the reader/writer function is set in the battery pack.

5. The cellular phone according to claim 4, wherein the antenna for the reader/writer function is connected with its electric circuit portion via a connection connector of the battery pack.

10. A cellular phone according to claim 1, whirein the built-in antenna is formed like a loop on a flat portion of the battery pack.

6. A battery pack of a cellular phone having a non-contact IC card function, constituted by setting an antenna for the non-contact IC card in the battery pack body.

7. A battery pack of a cellular phone having a non-contact IC card function and a reader/writer function of a non-contact IC card, constituted by setting an antenna for the non-contact IC card and an antenna for the reader/writer function in the battery pack body.

8. A connector for battery connection in a cellular phone including a non-contact IC card function and a battery pack having an antenna for the non-contact IC card function, comprising a terminal for connecting the antenna with an electric circuit portion for the non-contact IC card function.

9. The connector according to claim 8, wherein a reader/writer function of a non-contact IC card is provided for the cellular phone, an antenna for the reader/writer function is set in the battery pack, and a terminal for connecting the antenna for the reader/writer function with its electric circuit portion is further included.