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Lizhong H Sun

from Nashua, NH
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Also known as:
Livhong Sun
Phone and address:
3 Daylily Dr, Nashua, NH 03062
(603) 883-2540
Connected to:
A Sun, 59Able M Sun, 60Alisa Sun, 32Amie Y Sun, 37Angela C Sun, 37Ari Sun, 51Bao H Sun, 53Belle D Sun, 59Ben C Sun, 68Bessie W Sun, 73

Lizhong Sun Phones & Addresses

  • 3 Daylily Dr, Nashua, NH 03062 (603) 883-2540
  • 10 Sullivan Ln, Acton, MA 01720
  • 573 Buena Pkwy, Bridgewater, NJ 08807 (908) 707-1781

Publications

Us Patents

Programmable Frequency Divider

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US Patent:
7113009, Sep 26, 2006
Filed:
Mar 24, 2004
Appl. No.:
10/807852
Inventors:
Lizhong Sun - Nashua NH, US
Bruce Del Signore - Hollis NH, US
Axel Thomsen - Austin TX, US
Douglas F. Pastorello - Hudson NH, US
Assignee:
Silicon Laboratories Inc. - Austin TX
International Classification:
H03K 25/00
US Classification:
327115, 377 47, 377 48
Abstract:
A divider is disclosed herein. The divider includes a sequence of divide stages programmably coupled to provide a variety of divide ratios. The divider also includes one or more multiplexers to feedback the output of a divide stage to the input of a divide stage earlier in the sequence of divide stages. The divider may also include duty cycle correction circuitry and self correction logic to correct abnormal logic states. The divide stages can operate in synchronism with each other. Multiplexer functionality, self correction circuitry functionality, and divide stage functionality may be implemented in a combination latch circuit.

Phase Selectable Divider Circuit

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US Patent:
7187216, Mar 6, 2007
Filed:
Jun 28, 2004
Appl. No.:
10/878198
Inventors:
Lizhong Sun - Nashua NH, US
Douglas F. Pastorello - Hudson NH, US
Richard J. Juhn - Nashua NH, US
Axel Thomsen - Austin TX, US
Assignee:
Silicon Laboratories Inc. - Austin TX
International Classification:
H03K 21/00
US Classification:
327115, 327117
Abstract:
A phase selectable divider circuit includes a select circuit receiving a plurality of signals having a common frequency and a different phase. One of the plurality of signals, having a first phase, is selected as a selector circuit output signal. A first value corresponding to the first phase is summed with a second value corresponding to a phase offset from the first phase to generate a sum indicative thereof. That sum is used to select a second one of the signals having a second phase as the next selector circuit output signal. As successive sums are generated, a pulse train is supplied by selector circuit having a desired frequency.

High-Speed Divider With Pulse-Width Control

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US Patent:
7405601, Jul 29, 2008
Filed:
Feb 28, 2007
Appl. No.:
11/680026
Inventors:
Akhil K. Garlapati - Woburn MA, US
Lizhong Sun - Nashua NH, US
Douglas F. Pastorello - Hudson NH, US
Richard J. Juhn - Nashua NH, US
Axel Thomsen - Austin TX, US
Assignee:
Silicon Laboratories Inc. - Austin TX
International Classification:
H03K 21/00
US Classification:
327115, 327117
Abstract:
In at least one embodiment of the invention, a method for dividing a first signal having a first frequency by a divide ratio to generate a lower frequency signal includes generating a first plurality of signals having a common frequency, a first pulse width, and different phases. The first plurality of signals is based, at least in part, on at least one signal having a second pulse width. The first pulse width is selected from a plurality of pulse widths based, at least in part, on the divide ratio. The method includes sequentially selecting individual pulses of the first plurality of signals as an output signal of a select circuit to generate an output signal having a frequency lower than the first frequency.

High-Speed Divider With Reduced Power Consumption

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US Patent:
7551009, Jun 23, 2009
Filed:
Feb 28, 2007
Appl. No.:
11/680016
Inventors:
Akhil K. Garlapati - Wobum MA, US
Lizhong Sun - Nashua NH, US
Douglas F. Pastorello - Hudson NH, US
Assignee:
Silicon Laboratories Inc. - Austin TX
International Classification:
H03K 21/00
H03K 23/00
H03K 25/00
US Classification:
327115
Abstract:
A method for dividing a signal having a first frequency by a divide ratio includes selecting, based on the divide ratio, a first pulse width of at least one signal having a second frequency and being generated by at least a corresponding one of a plurality of pulse-width control circuits responsive to at least one signal having a second pulse width. The method includes selecting at least one of the plurality of pulse-width control circuits to be powered-on to generate the at least one signal. The at least one of the plurality of pulse-width control circuits includes a first pulse-width control circuit to generate a first signal having the first pulse-width, second frequency, and first phase. The first signal corresponds to a select circuit output signal having a first phase. The method includes selecting at least one other of the plurality of pulse-width control circuits to be powered-off.
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Lizhong H Sun from Nashua, NH Get Report