Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7564897 | Jitter measuring apparatus, jitter measuring method and PLL circuit | Masahiro Ishida, Takahiro Yamaguchi, Mani Soma | 2009-07-21 |
| 7554332 | Calibration apparatus, calibration method, testing apparatus, and testing method | Masahiro Ishida, Takahiro Yamaguchi | 2009-06-30 |
| 7541815 | Electronic device, testing apparatus, and testing method | Masahiro Ishida, Takahiro Yamaguchi | 2009-06-02 |
| 7501905 | Oscillator circuit, PLL circuit, semiconductor chip, and test apparatus | Masahiro Ishida | 2009-03-10 |
| 7496137 | Apparatus for measuring jitter and method of measuring jitter | Masahiro Ishida, Takahiro Yamaguchi, Mani Soma | 2009-02-24 |
| 7466140 | Signal generation circuit, jitter injection circuit, semiconductor chip and test apparatus | Masahiro Ishida | 2008-12-16 |
| 7412341 | Jitter amplifier, jitter amplification method, electronic device, testing apparatus, and testing method | Masahiro Ishida, Takahiro Yamaguchi | 2008-08-12 |
| 7394277 | Testing apparatus, testing method, jitter filtering circuit, and jitter filtering method | Masahiro Ishida, Takahiro Yamaguchi | 2008-07-01 |