Data transferring apparatus and data transferring method

A data transferring apparatus that is connected to a data storing memory that stores a plurality of data as a plurality of stored data, the data transferring apparatus receiving comparison data to be compared with the stored data from an external unit, searching data corresponding to the comparison data from among the stored data, and transferring the stored data searched to the external unit, the data transferring apparatus comprising:

• a comparison-data storing unit that stores the comparison data received;
• a control unit that controls the entire data transferring apparatus, and generates comparison-condition information for comparing the stored data with the comparison data;
• a transfer processing unit that transfers the stored data searched to the external unit, the transfer processing unit including
• a comparison-data reading function of reading the comparison data from the comparison-data storing unit based on the comparison-data reading information;
• a stored-data reading function of reading the stored data from the data storing memory based on the comparison-condition information;
• and
• a stored-data searching function of searching the stored data corresponding to the comparison-condition information and the comparison data by comparing the stored data read with the comparison data read based on the comparison-condition information, wherein
• the comparison-data reading function includes a comparison-data storing buffer that reads the comparison data from the comparison-data storing unit, temporarily stores the comparison data read, and when the comparison data temporarily stored is read by the stored-data searching function, reads next comparison data from the comparison-data storing unit, and temporarily stores the next comparison data read, and
• the stored-data reading function includes a stored-data storing buffer that reads the stored data from the stored-data storing unit, temporarily stores the stored data read, and when the stored data temporarily stored is read by the stored-data searching function, reads next stored data from the stored-data storing unit, and temporarily stores the next stored data read.

A data transferring method for a data transferring apparatus that is connected to a data storing memory that stores a plurality of data as a plurality of stored data, the data transferring apparatus receiving comparison data to be compared with the stored data from an external unit, searching data corresponding to the comparison data from among the stored data, and transferring the stored data searched to the external unit, the data transferring method comprising:

• generating a plurality of pieces of comparison-condition information for searching predetermined stored data from the data storing memory;
• storing the comparison data received in a first memory;
• storing the comparison-condition information in a second memory upon the comparison data being stored in the first memory;
• reading the comparison-condition information stored in the second memory one by one;
• extracting comparison-data reading information for reading the comparison data from the first memory and stored-data reading information for reading the stored data from the data storing memory from the comparison-condition information;
• reading the comparison data from the first memory based on the comparison-data reading information;
• reading the stored data from the data storing memory based on the stored-data reading information;
• searching the stored data corresponding to the comparison-condition information and the comparison data by comparing the stored data read with the comparison data read based on the comparison-condition information;
• and
• transferring the stored data searched to the external unit.

A data transferring method for a data transferring apparatus that is connected to a data storing memory that stores a plurality of data as a plurality of stored data, the data transferring apparatus receiving comparison data to be compared with the stored data from an external unit, searching data corresponding to the comparison data from among the stored data, and transferring the stored data searched to the external unit, the data transferring method comprising:

• storing the comparison data received in a comparison-data storing memory;
• generating comparison-condition information for comparing the stored data with the comparison data;
• reading the comparison data from a comparison-data memory based on the comparison-data reading information;
• reading the stored data from the data storing memory based on the comparison-condition information;
• searching the stored data corresponding to the comparison-condition information and the comparison data by comparing the stored data read with the comparison data read based on the comparison-condition information;
• and
• transferring the stored data searched to the external unit, wherein
• the reading the comparison-data includes
• reading the comparison data from the comparison-data memory;
• storing temporarily the comparison data read in a first buffer;
• reading, when the comparison data temporarily stored is read, next comparison data from the comparison-data memory;
• and
• storing temporarily the next comparison data read in the first buffer, and
• the reading the stored data includes
• reading the stored data from the stored-data memory;
• storing temporarily the stored data read in a second buffer;
• reading, when the stored data temporarily stored is read, next stored data from the stored-data memory;
• and
• storing temporarily the next stored data read in the second buffer.