Tandberg Data ASA
95Patents
2Active
95Granted
37Portfolio score
Filing activity: Apr 13, 1981 → Jun 25, 2012 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5542082A | Data storage system connected to a host computer system and having removable data storage media and equipped to read a control program from the removable media into storage employing ID comparison scheme | Physics | 80 | Expired |
| US4395010A | Device for the setting up of a data display device on a work surface | Emerging Cross-Sectional Technologies | 63 | Expired |
| US6650496B2 | Fully integrated matrix magnetic recording head with independent control | Physics | 55 | Expired |
| US5452152A | Tracking control on longitudinal azimuth tracks using an auxiliary read head | Physics | 52 | Expired |
| US5375245A | Apparatus for automatically reducing the power consumption of a CRT computer monitor | Physics | 49 | Expired |
| US4609959A | Device for positioning a magnetic head to various tracks of a magnetic tape | Physics | 45 | Expired |
| US4679104A | Method and arrangement for positioning a magnetic head to various tracks of a magnetic tape | Physics | 43 | Expired |
| US5438469A | Method and apparatus for coarse and fine positioning a magnetic head with three piezoelectric elements arranged in a tripod arrangement | Physics | 40 | Expired |
| US5294803A | System and a method for optically detecting an edge of a tape | Physics | 35 | Expired |
| US4866548A | Method and arrangement for precise positioning of a magnetic head to various tracks of a magnetic tape | Physics | 34 | Expired |
| US5379165A | Method and apparatus for improving the accuracy of a tape servo track seek algorithm by using longitudinally correlated waveforms of lateral tape movement unique to each tape cassette | Physics | 31 | Expired |
| US5457586A | Method and arrangement for positioning a magnetic head relative to the storage medium of a magnetic layer storage | Physics | 29 | Expired |
| US5294791A | System and a method for controlling position of a magnetic head relative to a servo track of a tape by optical detection of an edge of the tape | Physics | 29 | Expired |
| US5357495A | Stacker/autoloader system with intelligent media storage magazine control | Physics | 28 | Expired |
| US5257148A | Method and apparatus for positioning a magnetic head in a magnetic layer memory system using tracking by reading a spaced pair of corresponding subtracks | Physics | 28 | Expired |
| US6972931B2 | Write/read head assembly with wear parts | Physics | 28 | Expired |
| US4476503A | Method for the recognition of an edge of a magnetic medium and a device for implementation of the method | Physics | 26 | Expired |
| US4622606A | Magnetic tape recorder | Physics | 24 | Expired |
| US5394277A | Method for determining servo track pair position and longitudinal tape position for a tape using dedicated servo format | Physics | 22 | Expired |
| US5343341A | Method for seeking the center of a recorded data track | Physics | 22 | Expired |
| US4639796A | Arrangement for positioning a transducer to at least one track of a tape-shaped recording medium | Physics | 20 | Expired |
| US5287008A | Electrostatic discharge noise suppression method and system for electronic devices | Electricity | 19 | Expired |
| US5162780A | Trackball for data entry and control with optimized ball height | Physics | 18 | Expired |
| US5235683A | Method and apparatus for accessing peripheral storages with asychronized individual requests to a host processor | Physics | 17 | Expired |
| US5881960A | Method and apparatus for increased mechanical stability of a tape and cartridge | Physics | 16 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.