Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2000-08-09
2001-09-11
Black, Thomas (Department: 2171)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C705S037000, C705S401000, C705S409000
Reexamination Certificate
active
06289351
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a method for providing data from a data providing side to a data receiving side via a data transmission means, and device thereof.
Data provided from data providers to data receivers via data transmission means such as, for example, communications satellites, telephone lines and optical fiber cables etc. can be roughly divided into two groups. On the one hand, there is data where it is advantageous both for the data provider and the data receiver for the data to have a long or limitless period of validity so that the data can be used for a long period of time. On the other hand, there is data where it is advantageous for both the data provider and the data receiver of the data for the data to have a short valid period so that the data is only used for a short period of time.
Data having a long or limitless period of validity is data such as product summaries occurring in the communications business, while data having a short period of validity is data such as data listing product prices. Data having a valid period is no longer valid once the valid period is over and after the valid period is over data having an updated valid period therefore has to be sent from the data provider to the data receiver via a data transmission means.
However, when data configured so that short period valid data is included as a part of data having a long or indefinite period of validity is provided using related data-providing methods, all of the data for the short period valid data including the long period valid data had to be updated every time the period for the short valid period data expired. This is troublesome with regards to the providing of the data and transmission efficiency is lowered.
As the present invention sets out to resolve the above problems, it is therefore the object of the present invention to provide a data providing method and device thereof capable of providing data easily at a high transmission efficiency.
SUMMARY OF THE INVENTION
A data providing method for providing data according to the present invention therefore comprises the steps of producing and providing first data (e.g. data DTb) having a region including information relating to a valid period of data, receiving the first data, categorizing the first data in accordance with the information relating to the valid period and then storing the first data after being categorized, providing second data (e.g. data DThb) of the same format as the first data, receiving the second data, recognizing the second data with respect to information relating to the valid period and replacing the first data with the second data in accordance with results of the recognition.
The information relating to the valid period of data can include data of the valid period and data showing presence of the data of the valid period.
Further, a data providing method for providing data is therefore provides so as to comprise the steps of combining data (e.g. data DTa) not including data showing a valid period of data and first data (e.g. data DTb) including data showing a valid period of data and then providing the data as being combined, receiving the data as being combined, categorizing the data not including data showing the valid period of data and the first data in accordance with information relating to the valid period of data and then storing the data after being categorized, providing second data (e.g. data DTbb) of the same format as the first data, recognizing the second data with respect to information relating to data showing a valid period of the second data and replacing the first data with the second data in accordance with results of the recognition.
The first data can be replaced with the second data when the second data is determined to be updated data for the first data from the recognition results.
Further, according to the present invention, a data providing device comprises a data provider and a data receiver. The data provider comprises a data producing section for producing first data (e.g. data DTb) having a region including information relating to a valid period of data. The data receiver comprises a storage section for categorizing the first data in accordance with the information relating to the valid period, storing the first data being categorized second data (e.g. data DThb) of the same format as the first data provided by the data provider with respect to information relating to a valid period of the second data and replacing the first data with the second data in accordance with results of the recognition. Here, the data provider provides data therefrom to the data receive via the data transfer means.
The data producing section can provide data of the valid period and data showing presence of the data of the valid period as information relating to the valid period of the data.
Moreover, the storage section can comprise a categorizing section, a storage section, a recognizing section and a replacing section. The categorizing section is for categorizing the first data in accordance with the information relating to the valid period. The storage section is for storing the first data being categorized. The recognizing section is for recognizing the second data of the same format as the first data provided from the data provider with respect to information relating to a valid period of the second data and the replacing section is for replacing the first data with the second data in accordance with results from the recognizing section and storing the second data in the storing section.
The replacing section can replace the first data with the second data when the recognizing section recognizes the second data as being updated data for the first data.
Further, according to the present invention, a data receiving device for receiving data having an area for information relating to a valid period from a data providing device via a data transfer means, comprises a data categorizing means, a data storing means, a data recognition means and a data replacing means. The data categorizing means is for categorizing first data in accordance with information relating to the valid period. The data storing means is for storing the first data being categorized. The data recognition means is for recognizing second data of the same format as the first data with respect to information of a valid period of the second data and the data replacing means is for replacing the first data stored in the data storing means with the second data in accordance with results from the data recognition means.
Further, according to the present invention, a data receiving device for receiving data having an area for information relating to a valid period from a data providing device via a data transfer means, comprises a data categorizing section, a data storage section and a data recognizing section. The data categorizing section is for categorizing data in accordance with information relating to the valid period. The data storage section is for storing the categorized data. The data recognizing section is for recognizing the categorized data with respect to information relating to the valid period. Here, the data categorizing section categorizes data when the data is provided from the data providing device as a combination of data A (e.g. data DTa) and data B (e.g. data DTb). The data A includes data for which the information relating to the valid period is given as showing that the valid period is limitless. The data B includes data for which the information is given as showing that the valid period is short. The categorizing section then transmits the data A to the data storage section and the data B to the data recognizing section on the basis of the information. The data recognizing section recognizes whether or not data to be updated by being replaced with the data B is already stored in the storage section, and the data storage section stores the data B so that the data B is made to correspond to the data A when the data recognizing section recognizes that no data is stored at the stora
Doi Toshitada
Ishii Makoto
Bell Boyd & Lloyd LLC
Black Thomas
Coby Frantz
Sony Corporation
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