U.S. Philips Corporation

Martinus A Renders

Budiman Sastra

Wolter W Degger

The invention relates to a system comprising a magnetic tape (7) and a magnetic tape apparatus (1), which apparatus (1) comprises drive means for driving the magnetic tape (7) and reels (5,6), magnetic-head means (9, 10), and buffer means comprising a belt (8), the information on the magnetic tape (7) being arranged in sections (47) and being recorded in individual discontinuous tracks (48) within the sections (47), each section (47) having a magnetically recorded address (49). The system further comprises input means (51) for selecting one of the sections and a control unit (45) comprising a selection device (45a) for the rapid location of the section (47), and control means (45b) for controlling the tape transport within a section (47). As a result of this, the system is suitable for the storage of large amounts of information in serial form in such a way that the information within each section (47) can be scanned directly.

System for random access to information on a magnetic tape

A magnetic-tape apparatus is disclosed which includes a drive mechanism for driving a magnetic tape and tape reels, a magnetic-head mechanism buffer mechanism comprising a belt (8), guide elements for guiding the belt in an operational position, a tape-threading mechanism which during the thread-out phase threads the tape out of the cassette and wraps it around the magnetic-head mechanism and during the thread-in phase threads the tape into the cassette. A belt-threading mechanism threads the belt between the guide elements into the tape path during said thread-out phase and brings the belt back into its initial position during the thread-in phase. The apparatus (1) also includes a mechanism for moving the belt-threading mechanism in such a way that the belt can be brought into the desired operational position and into said initial position.

Magnetic-tape apparatus comprising a threading mechanism for the

A magnetic tape apparatus (1) comprises a drive mechanism for driving a magnetic tape (7) and reels (5, 6), a magnetic-head mechanism (9, 10), a buffer mechanism a belt (8) and guide elements (21, 22, 23, 24), which guide the belt (8) in the operational position, which apparatus (1) also comprises a control system for controlling the tape tension, for controlling the position of the belt (8) in the operational phase and for locating a desired part of the tape. The control system comprises a position detection mechanism (38) a tape-tension detection mechanism (44), and a control unit (45) for controlling the reel and tape drive mechanism.

Magnetic tape apparatus comprising a control unit for controlling tape

A deflection coil consisting of a number of elementary coils formed by folding flat coils along four folding lines such that at the area of the folding lines each turn crosses all other turns. Very accurate deflection coils can thus be manufactured in a simple manner.

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Eindhoven, Netherlands

Martinus A Renders