Yuichi Kojima
35Patents
15h-index
40Co-inventors
81Inventor score
Filing activity: May 13, 1983 → Mar 21, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5793971A | Video signal output apparatus having near video-on-demand function | Electricity | 146 | Expired |
| US6498894B2 | Video and/or audio data recording and/or reproduction apparatus | Physics | 51 | Expired |
| US5410351A | Video signal transmission system and method | Electricity | 47 | Expired |
| US5420636A | Apparatus for and method of transmitting video signal | Electricity | 42 | Expired |
| US5418795A | Viterbi decoder with path metric comparisons for increased decoding rate and with normalization timing calculation | Electricity | 41 | Expired |
| US4697212A | Method and apparatus for recording a digital information signal | Physics | 34 | Expired |
| US5128942A | Method of and apparatus for transmitting video data | Electricity | 28 | Expired |
| US4626826A | Method and apparatus for encoding and decoding an NRZI digital signal with low DC component and minimum low frequency components | Physics | 26 | Expired |
| US6701095B1 | Office information system having a device which provides an operational message of the system when a specific event occurs | Physics | 22 | Expired |
| US5291524A | Viterbi decoding apparatus | Electricity | 21 | Expired |
| US6012028A | Text to speech conversion system and method that distinguishes geographical names based upon the present position | Physics | 20 | Expired |
| US4853780A | Method and apparatus for predictive coding | Electricity | 19 | Expired |
| US4562578A | Method for data transmission | Physics | 19 | Expired |
| US6085019A | Apparatus and method for recording and reproducing video data to and from a record medium | Physics | 17 | Expired |
| US5506623A | Data compression methods and systems with quantization distortion measurement means | Electricity | 15 | Expired |
| US5590222A | Image signal processing apparatus utilizing a 2D Haar transform and adaptive selection of images based on a parameter such as a ratio of coefficients for reducing block distortion and method thereof | Electricity | 14 | Expired |
| US6256420A | Data transmission system | Physics | 12 | Expired |
| US5541659A | Picture signal coding/decoding method and device using thereof | Electricity | 11 | Expired |
| US4617552A | Method and apparatus for converting a digital data | Physics | 11 | Expired |
| US6094522A | Video data recording and reproduction apparatus having a plurality of input/output control devices | Physics | 11 | Expired |
| US4646327A | Waveform shaping apparatus | Electricity | 10 | Expired |
| US6950613B2 | Office information system having a device which provides an operational message of the system when a specific event occurs | Physics | 10 | Expired |
| US5231667A | Scrambling/descrambling circuit | Physics | 10 | Expired |
| US5410555A | Viterbi decoding apparatus | Electricity | 9 | Expired |
| US4751704A | Method and apparatus for decoding BCH code | Electricity | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.