DATA RETRIEVAL APPARATUS, DATA RETRIEVAL PROGRAM, AND DATA RETRIEVAL METHOD

• US 20170206254A1
• Filed: 02/21/2014
• Published: 07/20/2017
• Est. Priority Date: 04/25/2013
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: OGASAWARA, Akihiro
• Granted Patent: US 10,146,844 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 16/254 Extract, transform and load [ETL] procedures, e.g. ETL data flows in data warehouses

Abstract

A data retrieval apparatus comprises: a local database which links data for retrieval with content attribute data and stores same; a data for retrieval extraction processing unit which extracts the data for retrieval from a medium; an attribute data retrieval processing unit which retrieves the attribute data corresponding to the data for retrieval from the local database; and a data for retrieval storage processing unit which stores the data for retrieval if the attribute data corresponding to the data for retrieval is not present in the local database.

Claims

1. A data retrieval apparatus comprising:

a local database that stores data for retrieval and attribute data of a content, the data for retrieval being in association with the attribute data of the content;

a retrieval data extraction portion that extracts the data for retrieval from a medium inserted from an outside;

an attribute data retrieval portion that retrieves the attribute data corresponding to the data for retrieval extracted by the retrieval data extraction portion, from the local database;

a retrieval data storage portion that stores the data for retrieval when the attribute data corresponding to the data for retrieval extracted by the retrieval data extraction portion is not present in the local database; and

a storing portion that stores to a user-specific database, the attribute data retrieved by the attribute data retrieval portion and the data for retrieval used at a time of retrieving the attribute data, the attribute data retrieved by the attribute data retrieval portion being in association with the data for retrieval used at the time of retrieving the attribute data,

wherein;

when the local database is updated,

the attribute data retrieval portion re-retrieves the attribute data corresponding to the data for retrieval stored in the retrieval data storage portion, from the local database; and

when the medium is inserted in a subsequent time,

the attribute data retrieval portion

retrieves the attribute data corresponding to the data for retrieval extracted by the retrieval data extraction portion, from the user-specific database, and

retrieves the attribute data corresponding to the data for retrieval, from the local database when the attribute data corresponding to the data for retrieval is not present in the user-specific database.

2. The data retrieval apparatus according to claim 1, wherein:

when the attribute data retrieval portion is connected to an external database storing the data for retrieval and the attribute data, the data for retrieval being in association with the attribute data,

the attribute data retrieval portion re-retrieves the attribute data corresponding to the data for retrieval stored in the retrieval data storage portion, from the external database.

4. The data retrieval apparatus according to claim 1,

wherein:

the data for retrieval includes at least table of contents data of the medium; and

the attribute data retrieval portion retrieves the attribute data corresponding to the table of contents data included in the data for retrieval extracted by the retrieval data extraction portion, from the local database; and

the attribute data retrieval portion retrieves the attribute data corresponding to data other than the table of contents data included in the data for retrieval, from the local database when the attribute data corresponding to the table of contents data is not present in the local database.

3. (canceled)

5. A non-transitory tangible storage medium storing a data retrieval program operating in a data retrieval apparatus including a local database that stores data for retrieval and attribute data of a content, the data for retrieval being in association with the attribute data of the content, the data retrieval program performing:

extracting the data for retrieval from a medium inserted from an outside;

retrieving the attribute data corresponding to the data for retrieval extracted by the extracting the data for retrieval, from the local database;

storing the data for retrieval when the attribute data corresponding to the data for retrieval extracted by the extracting the data for retrieval is not present in the local database;

storing to a user-specific database, the attribute data retrieved by the retrieving the attribute data and the data for retrieval used at a time of retrieving the attribute data, the attribute data retrieved by the retrieving the attribute data being in association with the data for retrieval used at a time of retrieving the attribute data;

re-retrieving the attribute data corresponding to the data for retrieval stored by the storing the data for retrieval, from the local database when the local database is updated; and

when the medium is inserted in a subsequent time,

retrieving the attribute data corresponding to the data for retrieval extracted by the retrieval data extraction portion, from the user-specific database, and

retrieving the attribute data corresponding to the data for retrieval, from the local database when the attribute data corresponding to the data for retrieval is not present in the user-specific database.

6. A data retrieval method performed by a data retrieval apparatus including a local database that stores data for retrieval and attribute data of a content, the data for retrieval being in association with the attribute data of the content, the data retrieval method comprising:

extracting the data for retrieval from a medium inserted from an outside;

retrieving the attribute data corresponding to the data for retrieval extracted by the extracting the data for retrieval, from the local database;

storing the data for retrieval when the attribute data corresponding to the data for retrieval extracted by the retrieving the attribute data is not present in the local database; and

storing to a user-specific database, the attribute data retrieved by the retrieving the attribute data and the data for retrieval used at a time of retrieving the attribute data, the attribute data retrieved by the retrieving the attribute data being in association with the data for retrieval used at the time of retrieving the attribute data;

re-retrieving the attribute data corresponding to the data for retrieval stored by the storing the data for retrieval, from the local database when the local database is updated; and

when the medium is inserted in a subsequent time,

retrieving the attribute data corresponding to the data for retrieval extracted by the retrieval data extraction portion, from the user-specific database, and

retrieving the attribute data corresponding to the data for retrieval, from the local database when the attribute data corresponding to the data for retrieval is not present in the user-specific database.

7. (canceled)