Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8965304 | Multi-mode I/O circuitry supporting low interference signaling schemes for high speed digital interfaces | Antti Ruha, Tarmo Ruotsalainen | 2015-02-24 |
| 8023923 | Mixer circuit | Antti Ruha, Tarmo Ruotsalainen | 2011-09-20 |
| 7702293 | Multi-mode I/O circuitry supporting low interference signaling schemes for high speed digital interfaces | Antti Ruha, Tarmo Ruotsalainen | 2010-04-20 |
| 7336937 | Compensation of a DC offset in a receiver | Antti Ruha, Joni Jäntti | 2008-02-26 |
| 7239183 | Active current mode sampling circuit | Antti Ruha, Tarmo Ruotsalainen | 2007-07-03 |
| 7058463 | Method and apparatus for implementing a class D driver and speaker system | Antti Ruha, Tarmo Ruotsalainen | 2006-06-06 |
| 6819177 | Electronic circuit for a switching power amplifier and method for switching the output stage of a switching power amplifier | Antti Ruha, Tarmo Ruotsalainen, Jani Kauppinen | 2004-11-16 |
| 6577258 | Adaptive sigma-delta data converter for mobile terminals | Antti Ruha, Tarmo Ruotsalainen, Jani Kauppinen | 2003-06-10 |
| 6535155 | Method and apparatus for suppressing tones induced by cyclic dynamic element matching (DEM) algorithms | Antti Ruha, Tarmo Ruotsalainen, Jani Kauppinen | 2003-03-18 |
| 6507171 | Method and apparatus for measuring battery charge and discharge current using a direct analog-to-digital conversion of a charge/discharge replica current | Antti Ruha, Tarmo Ruotsalainen, Jani Kauppinen | 2003-01-14 |
| 6473019 | Low capacitance, low kickback noise input stage of a multi-level quantizer with dithering and multi-threshold generation for a multi-bit sigma-delta modulator | Antti Ruha, Tarmo Ruotsalainen | 2002-10-29 |
| 6445318 | Method and apparatus for providing signal dependent dither generator for sigma-delta modulator | Antti Ruha, Tarmo Ruotsalainen | 2002-09-03 |
| 6426714 | Multi-level quantizer with current mode DEM switch matrices and separate DEM decision logic for a multibit sigma delta modulator | Antti Ruha, Tarmo Ruotsalainen | 2002-07-30 |