Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7003674 | Disk drive employing a disk with a pristine area for storing encrypted data accessible only by trusted devices or clients to facilitate secure network communications A disk drive is disclosed comprising a disk for storing data, the disk comprising a public area for storing plaintext data and a pristine area for storing encrypted data. The disk drive comprises a head for reading the encrypted data from the pristine area of the di... | 02/21/2006 |
| 6930961 | Grooving apparatus and grooving method Disclosed is a grooving apparatus which can carry information on an information track at high recording density when carrying the information on the information track through a change in shape of a groove and which also can improve the signal-to-noise ratio of the i... | 08/16/2005 |
| 6868463 | Audio data recording apparatus and audio data sending/receiving method of the apparatus The apparatus and method for transferring audio data to a data recorder adopting a personal computer bus to receive audio data enters into data communication mode over a bus without conducting preparation steps for transferring data when a record request is received... | 03/15/2005 |
| 6766000 | Recordal service for voice communications A service system is provided for recording spoken passages exchanged between parties, for example, via the public telephone system. The service system is called into action preferably by the agreement of the parties and is used to make a recording of the spoken exch... | 07/20/2004 |
| 5479300 | Tape duplicating system A master tape moves between first supply and take-up reels over a pinch roller. A slave tape moves between second supply and take-up reels over a capstan. First and second guides are respectively constructed and positioned to regulate the movement of the ... | 12/26/1995 |
| 4870631 | Optical turntable system with reflected spot position detection Disclosed is an optical turntable system for optically playing phonograph records having a recorded signal in a groove formed by a wall having a position modulated by the recorded signal. An optical unit includes an optical source providing a first light ... | 09/26/1989 |
| 4558583 | Mobile pipe bending carriage A mobile pipe bending carriage, for storing and transporting bending equipment used in making radius bends in pipe, conduit, tubing and the like, having a mobile carriage structure with: (1) mounting attachment means for mounting thereon any one of various mak... | 12/17/1985 |
| 4148067 | Modulated groove records with a thick metal layer and method for making same A modulated groove record, such as a video disc, has a coating on a conductive layer bearing the modulated groove formed from the material of the layer. The material may be aluminium and the coating may be a uniform dielectric of aluminium oxide formed by... | 04/03/1979 |
| 4109045 | Information recording medium A recording medium or video disk of this invention consists basically of a base, a plurality of layers formed on the base and made of a compound or compounds sensitive to radiation energy, and intermediate layers interposed between the adjacent radiation ... | 08/22/1978 |
| 3943302 | Electron beam recording in thick materials A method of producing a high resolution information storage disc includes the steps of forming a grooved disc coated with an electron beam sensitive material, exposing the coated disc to a signal modulated electron beam, replicating the exposed disc to fo... | 03/09/1976 |
