這是用在 Micro Controller 的專利，內建一個 2-channel 的聲音產生器，並能產生 noise。且讓我來吹噓這顆 IC (UM6510)吧！當年這顆IC用於handheld LCD game，可是單月出貨量 9.6M, 業績單月破億的 IC。Project 成員有PD曾政貴，SA 洪宗謹，IC designer則是現在矽創副總的鄭奕禧，負責 CPU core，我則是做 Mask ROM, LCD, 2-channel PSG (programmable sound generator)，接 FPGA等等。
Reference by:
| 1 | 6,947,780 | Dolphin | Auditory alarms for physiological data monitoring |
| 2 | 6,944,284 | Vtech | Pulsed volume control of a magnetic ringer |
| 3 | 6,781,977 | Huawei | Wideband CDMA mobile equipment for transmitting multichannel sounds |
| 4 | 6,671,315 | Uniden | DTMF signal generator |
| 5 | 6,573,909 | HP | Multi-media display system |
| 6 | 6,553,272 | Oak | Method and apparatus for audio signal channel muting |
| 7 | 6,538,523 | Fuji | Multi-channel pulse width modulation apparatus and down counter |
| 8 | 6,535,611 | Oak | Method and apparatus for reducing switching noise of a digital volume control |
| 9 | 6,534,700 | HP | Automated compilation of music |
| 10 | 6,240,191 | Samsung | Audio volume control circuit using pulse width modulation signal |
| 11 | 6,195,438 | Matsushita | Method and apparatus for leveling and equalizing the audio output of an audio or audio-visual system |
| 12 | 6,101,257 | SGS-T | Audio signal processor |
| 13 | 6,078,277 | Mortorola | Arrangement and method for producing a plurality of pulse width modulated signals |
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