METHOD AND SYSTEM FOR SENDING/RECEIVING DATA, CENTRAL APPARATUS, AND COMPUTER READABLE STORAGE MEDIUM THEREOF
First Claim
1. A method executed by a system including terminal devices and a central apparatus connected to the terminal devices through a communication network, said central apparatus sending and receiving data in accordance with a request from one of the terminal devices, said method comprising:
- sending by a first terminal device to the central apparatus first data indicating a first category of data for sale among categories of data to be stored in a memory unit of a wireless tag;
receiving by the central apparatus the first data;
sending by the central apparatus the first data to a second terminal device;
sending by the second terminal device second data indicating purchase of data of the first category;
sending by the central apparatus an encryption key to the first terminal device on receiving the second data;
encrypting by the first terminal device the data of the first category with the encryption key;
writing by the first terminal device encrypted data of the first category to the memory unit of the wireless tag;
sending by the central apparatus a decryption key to the second terminal device;
reading by the second terminal device the encrypted data of the first category from the memory unit of the wireless tag; and
decrypting by the second terminal device the encrypted data of the first category with the decryption key.
1 Assignment
0 Petitions
Accused Products
Abstract
A product data category for sale among product data to be stored in a memory unit of a wireless tag is sent from a first client to a web server. The web server sends the product data category to a second client. The second client sends purchase data for the product data category to the web server. The web server sends an encryption key to the first client. The first client encrypts the product data with the encryption key and writes the encrypted product data in the memory unit of the wireless tag via a reader/writer. The web server sends a decryption key to the second client. On receiving the decryption key, the second client reads the encrypted product data in the wireless tag via a reader/writer to decrypt the encrypted product data with the decryption key.
6 Citations
11 Claims
-
1. A method executed by a system including terminal devices and a central apparatus connected to the terminal devices through a communication network, said central apparatus sending and receiving data in accordance with a request from one of the terminal devices, said method comprising:
-
sending by a first terminal device to the central apparatus first data indicating a first category of data for sale among categories of data to be stored in a memory unit of a wireless tag; receiving by the central apparatus the first data; sending by the central apparatus the first data to a second terminal device; sending by the second terminal device second data indicating purchase of data of the first category; sending by the central apparatus an encryption key to the first terminal device on receiving the second data; encrypting by the first terminal device the data of the first category with the encryption key; writing by the first terminal device encrypted data of the first category to the memory unit of the wireless tag; sending by the central apparatus a decryption key to the second terminal device; reading by the second terminal device the encrypted data of the first category from the memory unit of the wireless tag; and decrypting by the second terminal device the encrypted data of the first category with the decryption key. - View Dependent Claims (2)
-
-
3. A system for sending and receiving data relating to a memory unit of a wireless tag, comprising:
-
a central apparatus; a first terminal device connected to the central apparatus through a communication network; and a second terminal device connected to the central apparatus through a communication network, wherein said central apparatus including; a data receiver for receiving from the first terminal device first data indicating a first category of data for sale among categories of data to be stored in the memory unit, a data transmitter for sending the first data to the second terminal device, an encryption key transmitter for sending an encryption key to the first terminal device on receiving from the second terminal device second data indicating purchase of data of the first category, and a decryption key transmitter for sending a decryption key to the second terminal device, said first terminal device including; an encryptor for encrypting the data of the first category with the encryption key received from the central apparatus, and writing encrypted data of the first category to the memory unit of the wireless tag, and said second terminal device including; a decryptor for reading the encrypted data of the first category from the memory unit of the wireless tag, and decrypting the encrypted data of the first category with the decryption key received from the central apparatus. - View Dependent Claims (4)
said first terminal device further includes; a restrictor for restricting a write access to the memory area with the restriction key received from the central apparatus, and said second terminal device further includes; a canceller for canceling the restriction of a write access to the memory area with the cancel key received from the central apparatus.
-
-
5. A central apparatus connected to terminal devices through a communication network, said central apparatus sending and receiving data in accordance with a request from one of the terminal devices, said central apparatus comprising:
-
a data receiver for receiving from a first terminal device first data indicating a first category of data for sale among categories of data to be stored in a memory unit of a wireless tag; a data transmitter for sending the first data to a second terminal device; an encryption key transmitter for sending, on receiving from the second terminal device, second data indicating purchase of data of the first category, to the first terminal device an encryption key for encrypting data of the first category; and a decryption key transmitter for sending to the second terminal device a decryption key for decrypting encrypted data of the first category. - View Dependent Claims (6)
-
-
7. A computer readable storage medium storing a program of instructions to a computer connected to terminal devices through a communication network, said instructions being for executing a method for sending and receiving data in accordance with a request from one of the terminal devices, said method comprising:
-
receiving from a first terminal device first data indicating a first category of data for sale among categories of data to be stored in a memory unit of a wireless tag; sending the first data to a second terminal device; sending, on receiving from the second terminal device second data indicating purchase of data of the first category, to the first terminal device an encryption key for encrypting data of the first category; and sending to the second terminal device a decryption key for decrypting encrypted data of the first category. - View Dependent Claims (8, 9, 10, 11)
-
Specification