Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7287260 | Compact disc reader and method An apparatus for reading an optical disc. The apparatus includes a housing and a spindle positioned to rotatably support the optical disc adjacent to the exterior of the housing. A light emitting scan head is aligned to read the optical disc as it rotates. A protect... | 10/23/2007 |
| 7111309 | Changer apparatus for information discs A disc changer apparatus includes a stacking unit for stacking at least two holder compartments, adapted to hold one disc each, in at least two stacking positions. The holder compartments are coupled to at least one spindle having a screwthread and are movable in a ... | 09/19/2006 |
| 7042811 | Frictionless, non-destructive playback system for cylinder recordings The present invention provides a laser heterodyne interferometer based system for audibly producing sounds recorded on a cylinder recording, such as an Edison type wax cylinder, or a 33, 45 or 78 RPM LP (long play) record. The system generally comprises an optical s... | 05/09/2006 |
| 6957440 | Methods for translating and reading optical disks The present disclosure provides apparatus and methods for reading optical disks. Some implementations are particularly well suited for automatically playing both sides of a dual-sided optical disk. By coordinated delivery of disks between a disk reader, a disk trans... | 10/18/2005 |
| 6373811 | Optical pick-up apparatus An optical pick-up apparatus according to the invention optically performs at least one of selective recording of information onto a plurality of recording layers of a plurality of optical recording mediums arranged in layers, and selective reproduction o... | 04/16/2002 |
| 6135316 | Memory storage media disk duplication system having a reciprocating disk dispenser A disk dispenser dispenses memory storage disks including CD's and the like. The disk dispenser includes an upper guide and a lower guide attached to the upper guide. The upper and lower guides are formed with axially offset openings. The lower guide has ... | 10/24/2000 |
| 6122231 | Disc recording and/or reproducing apparatus and disc presence detecting method A disc recording and/or reproducing apparatus provided with disc exchange function to carry out recording/reproduction while carrying out exchange between plural discs held within a disc holding body. This recording and, or reproducing apparatus comprises... | 09/19/2000 |
| 6091696 | Disc changer It is an object of this invention to provide an inexpensive and high-quality disc changer by inserting a plurality of spacers and discs around a pair of spindles without the need for a stocker and subtrays. A vertical drive means drives a group of spacers... | 07/18/2000 |
| 6002662 | Disc recording and/or reproducing apparatus and disc presence detecting method A disc recording and/or reproducing apparatus provided with disc exchange function to carry out recording/reproduction while carrying out exchange between plural discs held within a disc holding body includes a disc holding body within which plural discs ... | 12/14/1999 |
| 5818802 | Disc player with rigid gripper arm and sled A disc player has two opposite disc magazines with a plurality of disc holders which each receive a disc and are arranged one above the other in compartments. A transport arrangement movable in the direction of the stack of discs in the magazine conveys a... | 10/06/1998 |
| 5774446 | Segmented audio and visual compact disks The present invention relates to a segmented cylindrical audio-visual device (10) having interlocking disks (12) a first disk (12A) has a first disk bottom side (12AB) with a first disk bottom side female connector (12ABB) centrally positioned thereon. Th... | 06/30/1998 |
| 5754517 | High speed information read/write system A high speed information read/write system includes a substantially cylindrical information storing device including at least one storage cylinder having at least one information storage medium thereon. A head device including at least one head cylinder i... | 05/19/1998 |
| 5682364 | Magazine for read/write disks and method and device for reading and writing said disks A compact disk changer includes a magazine having an inner body and an outer body that are rotatable independently of one another about a common axis of rotation. The inner and outer bodies are slideably interconnected by a helical member so that relative... | 10/28/1997 |
| 5671196 | Method for controlling a rotatable optical disk storing magazine A magazine controlling method is disclosed for smoothly stopping a disk storing magazine. According to the method of the invention, the rotational speed of the disk storing magazine in rotation is reduced upon the magazine reaching a position a small dist... | 09/23/1997 |
| 5561657 | Magazine for read/write disks and method and device for reading and writing of said read/write disks A compact disk changer includes a magazine having an inner body and an outer body that are rotatable independently of one another about a common axis of rotation. The inner and outer bodies are slideably interconnected by a helical member so that relative... | 10/01/1996 |
| 4845429 | Inductance divider sensor A method and apparatus for sensing the proximity of a target object includes a sensor inductor (LS, 38) connected in series with an identical reference inductor (LR, 36) between an input and ground to form an inductive divider networ... | 07/04/1989 |
