Kenjiro Endoh
30Patents
16h-index
20Co-inventors
81Inventor score
Filing activity: May 23, 1977 → Oct 11, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5987126A | Device having a digital interface and a network system using such a device and a copy protection method | Electricity | 144 | Expired |
| US6301663A | Copy protection apparatus and information recording medium used in this copy protection apparatus | Physics | 119 | Expired |
| US5652824A | Multilingual recording medium and reproducing apparatus with automatic selection of substitutes and languages based on frequency of selections | Electricity | 61 | Expired |
| US4162462A | Noise reduction system | Electricity | 54 | Expired |
| US6128434A | Multilingual recording medium and reproduction apparatus | Electricity | 51 | Expired |
| US6016295A | Audio system which not only enables the application of the surround sytem standard to special playback uses but also easily maintains compatibility with a surround system | Physics | 49 | Expired |
| US4491697A | Condenser microphone | Electricity | 36 | Expired |
| US6256390A | Device having a digital interface and a network system using such a device and a copy protection method | Electricity | 36 | Expired |
| US6556679B1 | Copy-guard system and information recording medium used in the same system | Electricity | 34 | Expired |
| US5896358A | Audio system which not only enables the application of the surround system standard to special playback uses but also easily maintains compatibility with a surround system | Physics | 32 | Expired |
| US4965680A | Apparatus for releasing a restriction on the recording of an information signal on a recording medium | Physics | 30 | Expired |
| US5850500A | Recording medium comprising a plurality of different languages which are selectable independently of each other | Electricity | 25 | Expired |
| US5084790A | Recording control apparatus | Physics | 25 | Expired |
| US6438692B1 | Copy protection apparatus and information recording medium used in this copy protection apparatus | Physics | 24 | Expired |
| US7893920B2 | Operation input device and method of operation input | Physics | 18 | Active |
| US5835669A | Multilingual recording medium which comprises frequency of use data/history data and a plurality of menus which are stored in a still picture format | Electricity | 16 | Expired |
| US4924328A | System for recording/reproducing an information source having an apparatus-specific identification signal | Physics | 16 | Expired |
| US4270177A | Digital amplitude control for digital audio signal | Electricity | 16 | Expired |
| US6118871A | Device having a digital interface and a network system using such a device and a copy protection method | Electricity | 15 | Expired |
| US4472687A | Audio power amplifier for supplying electric power to a load by switching of power supply voltage | Electricity | 15 | Expired |
| US4353060A | Analog to digital converter system with an output stabilizing circuit | Electricity | 14 | Expired |
| US5003410A | System for recording/reproducing an information source having an apparatus specific identification signal | Physics | 13 | Expired |
| US4224581A | Compander system having limiter in compressor and expander | Electricity | 11 | Expired |
| US6028979A | Multilingual recording medium and reproduction apparatus | Electricity | 9 | Expired |
| US4496937A | Sampled signal generation circuit | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.