Takao Arai
140Patents
24h-index
152Co-inventors
93Inventor score
Filing activity: Aug 9, 1977 → Sep 4, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5627655A | Recording apparatus and reproducing apparatus for video signals | Electricity | 104 | Expired |
| US4539615A | Azimuthal magnetic recording and reproducing apparatus | Physics | 93 | Expired |
| US6674858B1 | Receiving device, recording and reproducing device and receiving/recording-reproducing system for digital broadcast signal | Electricity | 82 | Expired |
| US4682332A | Method and apparatus for recording digital signals | Physics | 61 | Expired |
| US6631505B2 | Simulation circuit for MOS transistor, simulation testing method, netlist of simulation circuit and storage medium storing same | Electricity | 61 | Expired |
| US5912969A | Information receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording information | Electricity | 61 | Expired |
| US6404781B1 | Data transmission method for embedded data, data transmitting and reproducing apparatuses and information recording medium therefor | Electricity | 48 | Expired |
| US4541091A | Code error detection and correction method and apparatus | Electricity | 47 | Expired |
| US4309726A | Muting circuit in a PCM recording and reproducing apparatus | Physics | 45 | Expired |
| US7087396B2 | Monoclonal antibody and method and kit for immunoassay of soluble human ST2 | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5719943A | Digital information signal transmitting/receiving method and system | Electricity | 43 | Expired |
| US5343455A | Digital signal overlapped or joined recording method and apparatus | Physics | 42 | Expired |
| US4961204A | PCM signal generating/reproducing apparatus | Physics | 36 | Expired |
| US6535614B1 | Method and apparatus for recording and reproducing electronic watermark information, and recording medium | Electricity | 34 | Expired |
| US4646301A | Decoding method and system for doubly-encoded Reed-Solomon codes | Electricity | 32 | Expired |
| US5699370A | Information recording and reproduction apparatus to be controlled by temporal information | Electricity | 30 | Expired |
| US4562549A | Digital player using a pulse width detector | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5528574A | Disk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocity | Physics | 29 | Expired |
| US6434322B1 | Reproducing method and apparatus, for a video signal having copy control information | Electricity | 29 | Expired |
| US4934003A | Device for transferring the disabled | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6711276B1 | Control method and apparatus for embedding information in data | Physics | 26 | Expired |
| US4942487A | Apparatus for recording/reproducing a digital signal at variable speeds | Physics | 26 | Expired |
| US4622600A | Rotary-head type PCM data recording/reproducing method and apparatus with a redundancy-reduced control data format | Physics | 25 | Expired |
| US4716567A | Method of transmitting digital data in which error detection codes are dispersed using alternate delay times | Electricity | 24 | Expired |
| US5532835A | Tracking control in apparatus for fast reproducing digital information signal from magnetic tape | Electricity | 24 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.