Information processing system using IC tags

• US 7,336,179 B2
• Filed: 10/25/2005
• Issued: 02/26/2008
• Est. Priority Date: 10/26/2004
• Status: Expired due to Fees

• Current Assignee: Intertrust Technologies Corporation (Fidelio Acquisition Co LLC)
• Original Assignee: Kyocera Corporation
• Inventors: Kashiwase, Susumu
• Primary Examiner(s): Lee; Benjamin C.
• Assistant Examiner(s): TANG, SON M
• Application Number:
  US11/258,840
• Publication Number:
  US 20060087434A1
• Time in Patent Office: 854 Days
• Field of Search: None
• US Class Current: 340/572.1
• CPC Class Codes: G01S 5/0009 Transmission of position information to remote stations involving assistance data G01S5/0236

Abstract

There is disclosed an information processing system having plural IC tags (e.g. RFID tags), each of which transmits back a signal in response to an interrogatory signal sent from a cell phone acting as an interrogator. The information processing system includes the RFID tags and the cell phone. The cell phone transmits an interrogatory signal to the tags to read information from the tags. Each tag receiving the interrogatory signal transmits positional information stored in the tag to the cell phone in response to the interrogatory signal. The cell phone transmits a specific interrogatory signal including at least one of the transmitted sets of positional information. Each tag receiving the specific interrogatory signal makes a decision as to whether the positional information contained in the specific interrogatory signal matches the positional information stored in the tag itself. According to the specific interrogatory signal and the result of the decision, information contained in at least one of plural storage regions is transmitted to the interrogator.

Claims

1. An interrogator having a specific interrogatory signal transmitter for transmitting a specific interrogatory signal including at least one set of positional information of plural sets of positional information contained in sets of information respectively transmitted from plural IC tags attached to a given page of a book according to positional information which indicates the given page and which is contained in said transmitted information,

wherein when said sets of positional information respectively transmitted from the IC tags given positional information indicating that the page is the first page of the book, said specific interrogatory signal transmitter transmits the specific interrogatory signal including positional information indicating a highest page number out of page numbers indicated by the transmitted sets of positional information, and

wherein when said sets of positional information respectively transmitted from the IC tags contain positional information indicating that the page is the last page of the book, the signal transmitter transmits the specific interrogatory signal containing positional information indicating a lowest page number of the page numbers indicated by the transmitted sets of positional information.

2. An interrogator as set forth in claim 1, further including:

a key entry acceptance section for accepting entry of plural keys;

a key code assignment section for assigning key codes to the keys, respectively; and

a key entry control section included in said key entry acceptance section;

wherein when information transmitted from said IC tags contains key operation information containing said key codes, the key entry control section performs key entry according to the key codes contained in the key operation information.