Abstract: An information retrieval system whereby identical search results can be derived irrespective of the kind of DBMS or OS. A keyword normalizing device normalizes a keyword transmitted from a client through a network. A normalized data searching device then searches normalized data in a data storage section for data corresponding to the normalized keyword, and supplies the data to source data acquiring device. The source data acquiring device acquires source data associated with the normalized data supplied thereto, from among source data in the data storage section, and supplies the acquired source data to a sorting device. The sorting device first sorts the normalized data and then the source data in order of the sorted normalized data, and supplies the resulting source data to a source data supply device. The source data supply device transmits the source data to the client through the network.

Abstract: An information processing system for normalizing an input character string and storing the normalized character string is provided whereby the required storage capacity can be cut down. Normalizing means normalizes an input character string, for example, , and generates , which is then supplied to restoration information generating means and storing means. The restoration information generating means is supplied also with the original character string , besides the normalized character string , and generates restoration information “F@&” consisting of ASCII characters, which is supplied to storing means. The storing means stores the normalized character string and the restoration information “F@&” in a manner associated with each other.

Abstract: A derived database processing system in a database processing device comprises a plurality of independent databases which can provide a plurality of users with a group of data to be shared for a common purpose. The derived database processing system comprises a dictionary for managing database logical definition information and database storage information in a secondary memory, a derived database registering unit for determining a definition frame of a new name without violating a definition frame of a name used in a schema definition which defines data in a database, a dictionary information manipulating means for referring to said dictionary when the manipulation target is a derived database, then selecting necessary components of said database, and a database processing procedure generating unit, in a binding process to optimize access routing in a database.

Abstract: A derived database processing system in a database processing device comprises a plurality of independent databases which can provide a plurality of users with a group of data to be shared for a common purpose. The derived database processing system comprises a dictionary for managing database logical definition information and database storage information in a secondary memory, a derived database registering unit for determining a definition frame of a new name without violating a definition frame of a name used in a schema definition which defines data in a database, a dictionary information manipulating means for referring to said dictionary when the manipulation target is a derived database, then selecting necessary components of said database, and a database processing procedure generating unit, in a binding process to optimize access routing in a database.

Abstract: A method of developing a self-describing database management system comprises the steps of holding definition data of a database management system to be developed as data on a database and creating a database management system to be developed by the use of an existing database management system. The database management system to be developed comprises a data definition processing execution program and a bind processing execution program. These two programs include a process to permit access to definition data which form database, and are executed based on the definition data on the database.

Abstract: When two projecting units or more project two pictures or more obtained from video signals and luminance levels of projected pictures at an overlapped portion thereof are adjusted, a picture to be adjusted is selected from the projected pictures. One of processings for adjusting a correction start point of a correction data, a correction end point thereof and an inclination of a correction curve thereof to be used for a picture adjustment is selected. When the positions of a correction start point and/or a correction end point of the correction data are adjusted by using a remote controller unit or the like, a mark data is superposed on the correction start point and/or the correction end point of the correction data to display a mark formed based on the mark data on the screen together with the projected pictures. Thus, the picture is adjusted by displaying the marks together with the projected pictures.

Abstract: A video signal processing apparatus includes synchronizing signal separation (31) for extracting a synchronization information of an input video signal, a reference clock signal source (32) for generating a signal having a constant period, phase synchronization control (33) which receives input with a clock signal output from the reference clock signal source and which outputs a phase-locked clock signal at a timing of outputting the synchronization information, and a memory (35) for storing a correction data used for correcting a video signal of one scanning line amount. The correction data is read out from the memory (35) based on the clock signal to process the input video signal. When a synthesized picture is projected, the correction data is a data which permits a luminance level of the video signal of each scanning line amount to be faded in and/or faded out at a start portion and/or an end portion thereof linearly or like a predetermined curve.

Abstract: A database generic composite structure processing system stores data expressed by a logical structure and generates an access schedule in response to an query. The system comprises a generic composite structure element for storing definition information for associating a partial data comprising a table or a partial table expressed by a logical structure with a composite structure of a database in an independent structure in physical media, and for storing definition information for storing data and an optimizing process element for generating, according to the generic composite structure defined by said generic composite structure means, an executable module which is a concrete result of an access schedule in response to an query.

Abstract: When the input horizontal synchronizing frequency is changed, if the backup data (luminance correction data) corresponding to the horizontal synchronizing frequency is stored in the backup memory unit, then the backup data stored in the backup memory unit is read out from the backup memory unit and then stored in a correction memory unit. If in the above case the backup data corresponding to the changed horizontal synchronizing frequency is not stored in the backup memory unit, a backup data corresponding to the changed horizontal synchronizing frequency is calculated by the correction data calculating unit and the calculated correction data is stored in the correction memory unit and the backup memory unit. When the synthesized picture is projected by using the video signal source 20 which is frequently used, it is possible to quickly carry out various adjustments for the SEM processing.

Abstract: A method of shortening a lock period of a shared buffer in a data processing system includes a step of securing a copy memory used when nonvolatilizing the contents of the shared buffer, a step of temporarily locking the shared buffer, a step of copying the contents of the shared buffer into the copy memory, a step of unlocking the shared buffer after the completion of the copying step and a step of nonvolatilizing the contents of the copy memory. The shared buffer is locked before the contents thereof are copied into the copy memory and is unlocked after the completion of the copying step and before the nonvolatilization of the contents of the copy memory.

Abstract: In a data base processing system using a multiprocessor system, the data base processing system includes: a storage unit provided in the shared memory for storing data base management information representing either an object of a shared processing operation or an object of a local processing operation for every resource; an access management unit provided in each of the processor modules for performing an access control for an access request to the data base under either the shared processing operation or the local processing operation in accordance with the data base management information, the shared processing operation being symmetrically performed, and the local processing operation being asymmetrically performed in each processor module; and a control unit provided in the processor module for controlling the shared/local conversion in such a way that: an access state of the resource is managed for every resource; when a frequency of the access is unevenly distributed to a particular processor module, t

Abstract: A split control system for a page/page group in a data processing system having a storage structure employing a non-dense B-tree cluster structure, includes: a data base including an index portion and a data portion; the index portion being formed by three layers consisting of the B-tree structure, and the data portion formed by a plurality of upper page groups, and an upper page group used as an overflow area; a record insertion unit for inserting records into the page/page group by using the overflow area in a transaction process, and performing a pre-split process for the page/page group into further pages/page groups by also using the overflow area when there is no vacant space for insertion into the page/page group; and a Demon processing unit operated asynchronously with the transaction process for retrieving a state of use of the overflow area, performing a normal split process for the page/page group when the overflow area is in use, and moving a split page/page group from the overflow area to the pag

Abstract: A database processing system using a multi-processor including a plurality of processor modules each having a local memory connected to an external shared memory. The database processing system includes a composite structure definition control part for defining an administrative processor module for controlling an access to a composite structure of a database which has a storage structure independent of a logical structure; and a maintenance/selection control part in an optimum control processor for providing a function of access-controlling a shared process and a local process when an access request arises for a database composite structure, and for dynamically switching the access control process for the composite structure according to the access frequency notified by each processor module.

Abstract: A database processing system for supporting a plurality of storage structures comprises a dictionary for storing information such as basic data organizations relating to the combination of basic data organizations forming each type of storage structure, library parts names relating to said combination, and assembly pattern names an access parts library for storing information such as access parts to basic data organizations which are access methods to each of said basic data organizations, and library parts relating to the combination of said access parts; and an optimizing unit for generating procedures for processing a database by referring to said dictionary and access parts library in response to an query to a database and by combining said access parts to basic data organizations forming a storage structure and said library parts relating to the combination of said access parts.