US6519598B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Active memory and memory control method, and heterogeneous data integration use system using the memory and method
Assignee: Hitachi Ltd
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Filing: 1999-08-25
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Granted: 2003-02-11
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Expires: 2019-08-25
Abstract
Abstract A data request analysis unit for accepting and analyzing a request from a client computer, a data conversion program generation unit, and a data conversion unit are provided in a magnetic disk apparatus, the data conversion program generation unit downloads a program module by way of a network as required based on the analysis result obtained by use of the data request analysis unit to generate a data conversion program, and the data conversion unit downloads the conversion program, and converts the type of the data read out from the magnetic memory medium by use of the program, and directly transfers the converted data to the client computer by way of a network interface, thereby, the present invention provides a general purpose magnetic disk apparatus which is capable of flexibly accommodating the request from the client computer, the scalability of the whole system is improved because the data is converted in the magnetic disk apparatus, and the process efficiency of the client computer is improved.
Inventors
- 👤 Itaru Nishizawa
- 👤 Mamoru Sugie
- 👤 Nobutoshi Sagawa
- 👤 Hiroaki Odawara
- 👤 Shigekazu Inohara
- 👤 Frederico Maciel
- 👤 Naoki Watanabe
- 👤 Aki Tomita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:16
CPC Classifications
G; G06; G06F; G06F16/00; G06F16/20; G06F16/25; G06F16/258
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
189 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers comprising the processes of: (1) accepting a data request from a client computer by way of said external connection interface; (2) analyzing a type of said requested data and reading out the requested data from said memory medium by use of said data processing unit; (3) generating a data type conversion program based on said analysis result by use of said data processing unit; (4) converting the type of said data read out in the process (2) by means of said data type conversion program to the type obtained by said analysis by use of said data processing unit, the process comprising at least one of a selection of database record and a column projection, in the case that the application on the client computer is an associated database; and (5) directly transferring the converted data to said client computer or storing the converted data in the form previously requested from said client computer of the requester.
Claim 2
Dependent Claim
189 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers comprising the processes of: (1) accepting a data request from a client computer by way of said external connection interface; (2) analyzing a type of said requested data and reading out the requested data from said memory medium by use of said data processing unit; (3) generating a data type conversion program based on said analysis result by use of said data processing unit; (4) converting the type of said data read out in the process (2) by means of said data type conversion program to the type obtained by said analysis by use of said data processing unit, the process comprising at least one of a selection of database record and a column projection, in the case that the application on the client computer is an associated database; and (5) directly transferring the converted data to said client computer or storing the converted data in the form previously requested from said client computer of the requester.
Claim 3
Dependent Claim
183 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers comprising the processes of: (1) accepting a data request from a client computer by way of said external connection interface; (2) analyzing the type of said requested data and reading out the requested data from said memory medium by use of said data processing unit; (3) generating a data type conversion program based on said analysis result by use of said data processing unit; (4) converting the type of said data read out in the process (2) by means of said data type conversion program to the type obtained by said analysis by use of said data processing unit, the process being a process for giving additional tag information including an XML tag to describe the content of said data to said data and to convert said data to a language including XML; and (5) storing the converted data in the form previously requested from said client computer of the requester.
Claim 4
Dependent Claim
183 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers comprising the processes of: (1) accepting a data request from a client computer by way of said external connection interface; (2) analyzing the type of said requested data and reading out the requested data from said memory medium by use of said data processing unit; (3) generating a data type conversion program based on said analysis result by use of said data processing unit; (4) converting the type of said data read out in the process (2) by means of said data type conversion program to the type obtained by said analysis by use of said data processing unit, the process being a process for giving additional tag information including an XML tag to describe the content of said data to said data and to convert said data to a language including XML; and (5) storing the converted data in the form previously requested from said client computer of the requester.
Claim 5
Dependent Claim
202 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers comprising the processes of: (1) accepting a data request from a client computer by way of said external connection interface; (2) analyzing the type of said requested data and reading out the requested data from said memory medium by use of said data processing unit; (3) generating a data type conversion program based on said analysis result by use of said data processing unit; (4) converting the type of said data read out in the process (2) by means of said data type conversion program to the type obtained by said analysis by use of said data processing unit, the process comprising at least any one process of a selection of database record and a column projection, and a process for giving XML tag information to the record or column after said processing in the case that the data stored in said memory medium is the record data of the associated database; and (5) storing the converted data in the form previously requested from said client computer of the requester.
Claim 6
Dependent Claim
202 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers comprising the processes of: (1) accepting a data request from a client computer by way of said external connection interface; (2) analyzing the type of said requested data and reading out the requested data from said memory medium by use of said data processing unit; (3) generating a data type conversion program based on said analysis result by use of said data processing unit; (4) converting the type of said data read out in the process (2) by means of said data type conversion program to the type obtained by said analysis by use of said data processing unit, the process comprising at least any one process of a selection of database record and a column projection, and a process for giving XML tag information to the record or column after said processing in the case that the data stored in said memory medium is the record data of the associated database; and (5) storing the converted data in the form previously requested from said client computer of the requester.
Claim 7
Dependent Claim
163 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers, comprising the processes of: (1) accepting a data request including a designation of data format and data type, from a client computer by way of said external connection interface unit; (2) analyzing the received data request to determine conversion program modules which are necessary for converting data read out from said medium into output data according to said designation of data format and data type; (3) composing a data conversion program by combining the determined conversion program modules; (4) reading out the requested data from said medium and converting the format and type of the read out data by use of said data conversion program; and (5) returning the converted data from said external connection interface unit to the client computer of the requester by way of a network or directly.
Claim 8
Dependent Claim
163 words
A memory control method used for an active memory provided with a memory medium for storing data, a data processing unit, and an external connection interface unit, and connected to client computers, comprising the processes of: (1) accepting a data request including a designation of data format and data type, from a client computer by way of said external connection interface unit; (2) analyzing the received data request to determine conversion program modules which are necessary for converting data read out from said medium into output data according to said designation of data format and data type; (3) composing a data conversion program by combining the determined conversion program modules; (4) reading out the requested data from said medium and converting the format and type of the read out data by use of said data conversion program; and (5) returning the converted data from said external connection interface unit to the client computer of the requester by way of a network or directly.
Claim 9
Dependent Claim
67 words
A memory control method according to claim 4 , wherein the process (3) includes a step of judging whether each of said conversion program modules which are necessary for converting data is stored in the active memory or not, and a step of obtaining at least one conversion program module which is judged to not be stored in the active memory through the external connection interface unit.
Claim 10
Dependent Claim
23 words
A memory control method according to claim 5 , wherein the conversion program module is transferred from said client computer of a requester.
Claim 11
Dependent Claim
28 words
A memory control method according to claim 5 , wherein the conversion program module is transferred from a conversion program server connected to said external connection interface unit.
Claim 12
Dependent Claim
47 words
A memory control method according to claim 5 , wherein when the data request is requested from an XML application, a conversion program module for adding the additional tag information expressed by XML tags to data read out from said medium is determined in the process (2).
Claim 13
Dependent Claim
113 words
A heterogeneous data integration system including a plurality of active memories, each being provided with a memory medium for storing data and each being connected to client computers via a network, wherein, at least one of said active memories includes means for converting data of table type, read out from said memory medium, into XML document by adding tag information expressed by XML tags to the data read out from said medium, and means for outputting the converted data, and wherein the heterogeneous data integration system further includes means for integrating at least one of the expression and logical structure of data output from a plurality of active memories by XML tag mapping.
Claim 14
Dependent Claim
113 words
A heterogeneous data integration system including a plurality of active memories, each being provided with a memory medium for storing data and each being connected to client computers via a network, wherein, at least one of said active memories includes means for converting data of table type, read out from said memory medium, into XML document by adding tag information expressed by XML tags to the data read out from said medium, and means for outputting the converted data, and wherein the heterogeneous data integration system further includes means for integrating at least one of the expression and logical structure of data output from a plurality of active memories by XML tag mapping.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-02-10 | 2006-08-12 | 2007-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-10 | 2010-08-12 | 2011-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-10 | 2014-08-12 | 2015-02-11 | $7700.00 | Window Closed / Lapsed |