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Class 369/224 - With passive linear tracking


Subclass of Class 369 - Dynamic information storage or retrieval
Definition: Subject matter including constraining the path of the transducer
No. of patents: 9
Last issue date: 10/03/2006


NumberTitleIssue Date
7116465Micromirror device
There is provided a micromirror device, which is provided with a mirror layer including a mirror surface which is supported to be rotatable around a first axis passing through a center of the mirror surface, and an upper substrate having transparency including a fir...
10/03/2006
4823336Optical disk drive
An optical disk drive includes an optical disk, a pair of guide shafts, a carriage having an optical pick-up movable in the radial direction of the disk as guided by the guide shafts. A plurality of rollers are rotatably mounted on the carriage so that a ...
04/18/1989
4301528Tone arm mechanism
A tone arm system for a record player is provided having servo-controlled record warp compensation means including a moving coil motor for driving the tone arm vertically and a moving magnet motor for driving the tone arm horizontally in response to servo...
11/17/1981
4266785Stylus lifting/lowering actuator with improved electromagnetic motor
A playback system for recovering prerecorded information from a disc record through the use of a stylus mounted on a stylus arm includes a stylus arm lifting-lowering device. The lifting-lowering device uses a permanent magnet mounted on a leaf spring. Th...
05/12/1981
4222574Radial-tracking programmable record player
In a record player, a phonograph record disc is supported in a playing position on a turntable which is rotatably drivable at a selected speed about an axis. The disc, in its playing position, is engageable with a stylus carried by a transducer cartridge ...
09/16/1980
4166621Programmable record changer
A programmable phonograph record changer which provides automatic sound track selection for each of a plurality of records played sequentially by the record changer. The record changer includes an electro-optic scanner mounted on the pickup arm for sensin...
09/04/1979
4142729Gramophone equipment
A record player has a record track selection system using sensing means to scan a record to identify selected record tracks, the sensing means feeding signal processing circuitry having a gain or threshold adapted to individual record characteristics as d...
03/06/1979
4118039Tonearm position setting apparatus
The tonearm position setting apparatus for a record player is designed for use with a linearly movable tonearm base. A light source is movable substantially parallel to the movement direction of the tonearm base. A position setting device is interlocked w...
10/03/1978
3977684Playback apparatus, in particular a video player
A playback apparatus, in particular a video player, for playing back round disks, which are provided with information tracks which are optically readable with the aid of a read beam obtained from a light source, and having a housing which comprises a subs...
08/31/1976
 
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