Agfa-gevaert Ag

Censhare Gmbh

Afga-gevaert Aktiengesellschaft

Walter Bauer

Heinrich Farber

Manfred Schmidt

Jurgen Muller

Heinz Krobel

Ernst Widemann

Volkmar Voigtlander

Rudolf Schneider

Johann Zanner

Emile Paul Schoeters

Thomas Zehetmaier

Otto Butz

Dieter Wauer

Reimund Kluge

Juergen Mueller

Herbert Plaschke

Eberhard Werner

Roland Muller

Francois P Loots

Krobel

Farber

Heniz Krobel

Georges Brys

Willy K Van Landeghem

Hendrik A Pattyn

Petrus J De Maayer

Werner Haug

Heinz Korsa

The invention describes a method for determining a storage location of a database object of a specific version, wherein indexes for each version of the database object are stored in a trie having a root node corresponding to the specific version, the method comprising: determining a trie corresponding to the specific version by accessing the root node of the trie corresponding to the specific version; determining an object identifier of the database object by traversing the trie corresponding to the specific version using a secondary key related to the database object as search key; determining the storage location of the database object by traversing the trie corresponding to the specific version using the determined object identifier as search key.

Efficient in-memory multi-version concurrency control for a trie data structure based database

The invention provides a time-efficient way of performing a query in a database or information retrieval system comprising operations such as intersection, union, difference and exclusive disjunction on two or more sets of keys stored in a database or information retrieval system. In a novel execution model, all data sources and operators are tries, and in input trie for a higher-order set operation can be the output of a lower-order set operation which is evaluated on demand. Two or more input tries are combined in accordance with the respective set operation, to obtain the set of keys associated with the nodes of a respective resulting trie. The physical algebra of the implementation of tries based on bitmaps corresponds directly to the logical algebra for the set operations and allows for efficient implementation by means of bitwise Boolean operations.

Efficient use of trie data structure in databases

The invention provides a time-efficient way of performing a query in a database or information retrieval system comprising operations such as intersection, union, difference and exclusive disjunction on two or more sets of keys stored in a database or information retrieval system. In a novel execution model, all data sources are tries. Two or more input tries are combined in accordance with the respective set operation, to obtain the set of keys associated with the nodes of a respective resulting trie. An intersection operation performed in this way can be used for efficient range queries, in particular when two or more data items are involved in the query. The physical algebra of the implementation of tries based on bitmaps corresponds directly to the logical algebra for the set operations and allows for efficient implementation by means of bitwise Boolean operations.

Efficient use of TRIE data structure in databases

The invention relates to a method for processing a photostimulatable image plate ( ). The image plate ( ) is taken out of a cassette ( ), processed and placed back in the same cassette ( ), the cassette being conveyed from an input station ( ) to an output station ( ). The cassette ( ) is rotated about a vertical axis during conveyance once the image plate is taken out of the cassette and before said plate is reinserted in the same cassette.

Method and device for processing a photostimulatable image plate

A camera that projects data onto an X-ray film (2). The film is accommodated in a light-tight cassette (3). The data is imaged onto the film with light projected along a row (A) through an open window (4) in the cassette. The camera is characterized by means (24a, 24b, 25a, 25b, & 29) of releasably securing the cassette relative to the top (1a) of the camera along and/or across the row and by a control unit (27) that actuates the securing means during exposure and acts in conjunction with sensors (15a, 15b, & 15c) which emit signals in accordance with the orientation of the cassette.

Camera that projects data

An X-ray sheet film cassette has an upper cassette part, a lower cassette part adapted to face a radiation source and connected with the upper cassette part so that the cassette can be opened and closed. The lower cassette part has a frame and a plate connected with the frame. The plate includes an intermediate plate portion and two thin outer plate portions surrounding the intermediate plate portion. At least one of the outer plate portions extends outwardly beyond the intermediate plate portion at least at one edge of the plate and projects toward the interior of the X-ray sheet film cassette so as to form a web.

X-ray sheet film cassette

The X-ray film cassette has an interior portion and two cassette sections pivotally connected with each other by the frame hinge joint. The two cassette sections have opposing small sides positioned remotely from the frame hinge joint lockable with each other at the opposing small sides. The frame hinge joint is a plastic member having opposing longitudinal sides, each of which is provided with a jaw-like groove. Each cassette section has a complementary projection and is lockable with one of the longitudinal sides by insertion of the complementary projection in the jaw-like groove. Reinforced side pieces (3e, 3f) of the plastic member (3) form the jaw-like grooves, a projecting nose (1b, 2b) is provided on each of the complementary projecting members (1a, 2a), and the plastic member (3) is provided with three recesses (3a, 3b) on a strip which connects the side pieces, which form three suitable bending lines for the frame hinge joint.

X-ray film cassette having an easily assembled frame hinge joint

Apparatus for shifting X-ray films in a magazine wherein films having different sizes form a stack and which as a straight or corner-shaped internal stop for properly oriented films. The apparatus has a frame which is reciprocable toward and away from the magazine and carries two or more pivotable links each of which supports one or more driven wheels movable into frictional engagement at least with the outermost film of the stack to shift the engaged film toward and against the stop. Properly oriented films are withdrawn from the magazine by one or more suction cups which share the movements of the links relative to the magazine. The wheels are rotated by a common prime mover.

Apparatus for shifting and orienting X-ray films in magazines

The X-ray sheet film cassette has a top part hinged to a base part. The bottom of the base part is provided with a frame enclosing a film supporting plate through which the radiation is transmitted. The supporting plate has a laminated structure including two face plates of thermoplastically bonded carbon fibers and a comparatively thicker intermediate plate of a synthetic hard foam rubber sandwiched between the face plates and being glued thereto. The face plates are considerably thinner than the intermediate plate in the laminated supporting plate of the present invention.

A flat film cassette comprises a lower part, an upper part provided with an illumination window, and an element for turnably connecting the lower part and the upper part with one another. The lower part has a bottom with a peripheral edge for receiving a film, and having a plurality of edge portions including at least two parallel edge portions. A slider is lowerably supported in each of the edge portions of the edge in a springy manner and extends beyond the edge portion so that during closing of the upper part the slider is moved back into the edge portion.

Flat film cassette

An X-ray cassette for foils provided with a stimulatable phosphorous layer comprises two cassette parts turnable relative to one another between open and closed positions, one of the cassette parts being permeable for X-rays, elements for turnably connecting the cassette parts with one another, and elements for holding a foil on the X-ray permeable cassette part, the holding elements including an X-ray permeable elastic pad arranged on the X-ray permeable cassette part and having a surface facing toward a phosphorous layer of a foil inserted into the cassette, and a thin elastic foil applied on the surface of the pad and having a smooth, wear-resistant outer surface.

X-ray cassette for foils with phosphor layer

A device for the removal of sheet-like films from an X-ray film cassette or a film magazine by means of at least one sucker which has a suction lip with a frustoconical inner surface by which a front edge of a film is lifted from the stack. The suction lip has at the inner surface in the proximity of the mouth of the suction conduit a flat projection extended towards the film being lifted but is spaced therefrom.

Suction device for removing film sheets

A cassette for an x-ray film coated with a stimulable phosphor layer is formed so that a cassette memory which carries storable, recordable, readable and erasable data is rigidly attached to the cassette at the positioned spaced a predetermined distance from a given cassette corner. This position is the same for all cassettes of the same type and different formats.

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Munich, Germany

Walter Bauer