Heinrich Schemmann
25Patents
8h-index
35Co-inventors
75Inventor score
Filing activity: Sep 8, 1987 → Aug 25, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5159292A | Adaptive phase locked loop | Emerging Cross-Sectional Technologies | 75 | Expired |
| US5559513A | Digital sampling rate converter | Electricity | 39 | Expired |
| US5946363A | Digital detector circuit for recovering the bit timing from a data stream | Electricity | 39 | Expired |
| US5986989A | Method for processing the output signals of an optoelectronic scanner in a replay or recording appliance, and a corresponding appliance | Physics | 18 | Expired |
| US6370370B1 | Method for improving the wanted signal in a radio receiving unit | Electricity | 14 | Expired |
| US6549082B2 | High frequency oscillator | Electricity | 13 | Expired |
| US4858008A | Apparatus for the digital generation of vertical synchronizing and field identification signals | Electricity | 10 | Expired |
| US4827442A | Digital circuit for simultaneously generating digital sine- and cosine-function values | Electricity | 9 | Expired |
| US8704926B2 | CMOS image sensor with selectable hard-wired binning | Electricity | 8 | Active |
| US6215367A | Circuit for avoiding parasitic oscillation modes in an oscillator resonant circuit | Electricity | 7 | Expired |
| US8179464B2 | Circuit and method for reading out and resetting pixels of an image sensor | Electricity | 4 | Active |
| US8836615B2 | Driver for controlling a light emitting element, in particular an organic light emitting diode | Emerging Cross-Sectional Technologies | 4 | Active |
| US8294644B2 | Circuit and control method for a light-emitting display | Physics | 4 | Active |
| US8816942B2 | Luminous display and method for controlling the same | Physics | 3 | Active |
| US5949606A | Detection circuit for pilot tones for tracking control in the case of magnetic-tape recordings | Physics | 3 | Expired |
| US8428202B2 | Receiver with analog and digital gain control, and respective method | Electricity | 2 | Active |
| US8199075B2 | Method for driving, and a circuit of an element of an illuminated display | Physics | 2 | Active |
| US8102442B2 | Image sensor circuit | Electricity | 1 | Active |
| US8094218B2 | Image sensor circuit having differential signal path, differential analog-to-digital converter and differential signal offsetting means | Electricity | 1 | Active |
| US8131876B2 | Bidirectional signal transmission apparatus and method | Electricity | 0 | Active |
| US8284287B2 | Image sensor and method for reading out pixels of the image sensor | Electricity | 0 | Active |
| US9454931B2 | Luminous display and method for controlling the same | Physics | 0 | Active |
| US7286017B2 | Controllable RF broadband and amplifier with a constant input impedance | Electricity | 0 | Expired |
| US6577572B2 | Apparatus for reproduction or recording data or information with a photodetector and digital error signal and evaluation signal processing | Physics | 0 | Expired |
| US8368671B2 | Display device driving circuit with independently adjustable power supply voltage for buffers | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.