Resumes
Resumes
Fengchun Duan Phones & Addresses
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1832 Lee Way, Milpitas, CA 95035
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Elk Grove, CA
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San Jose, CA
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437 Forest Ridge Dr, Coppell, TX 75019
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Irving, TX
Publications
Us Patents
Apparatus And Method For Microcontroller Debugging
View pageUS Patent:
6915416, Jul 5, 2005
Filed:
Dec 28, 2000
Appl. No.:
09/752567
Inventors:
Brian Tse Deng - Richardson TX, US
Jian Yu - Plano TX, US
Fengchun Duan - Coppell TX, US
Jian Yu - Plano TX, US
Fengchun Duan - Coppell TX, US
Assignee:
Texas Instruments Incorporated - Dallas TX
International Classification:
G06F013/24
US Classification:
712227
Abstract:
Apparatus and method for microcontroller debugging. A preferred embodiment microcontroller integrated circuit comprises debug circuitry on the integrated circuit. The debug circuitry is capable of breaking normal instruction execution based on an address breakpoint, a stack pointer breakpoint, or a single step breakpoint. Upon detection of a valid breakpoint, the debug circuitry substitutes a jump to a debug program instruction in place of the next normal application program instruction. The debug program then may provide microcontroller status to a developer, allowing the developer to debug the application program. Upon completion of the debug program, control of the microcontroller is returned to the application program at the point of interruption.
Enhanced Universal Serial Bus (Usb) Bus Monitor Controller
View pageUS Patent:
20030163627, Aug 28, 2003
Filed:
Feb 28, 2002
Appl. No.:
10/085413
Inventors:
Brian Deng - Richardson TX, US
Fengchun Duan - Coppell TX, US
Feng Wu - McKinney TX, US
Fengchun Duan - Coppell TX, US
Feng Wu - McKinney TX, US
International Classification:
G06F013/14
US Classification:
710/305000
Abstract:
As communications busses become more generic, the handshaking that occurs to provide communications become more complicated. The constant checking of signal lines for a stable and debounced signal can consume a considerable amount of overhead and greatly increase the complexity of the design of the hardware. An independent debouncing circuit and can be used to detect the presence of a stable and debounced signal and notify an interface engine A state machine executing in the interface engine uses the stable and debounced signals to control operation of a peripheral connected to the bus by monitoring signals passed on the bus.
Method And Apparatus For Connection Admission Control In Cell Or Packet-Based Networks
View pageUS Patent:
6608815, Aug 19, 2003
Filed:
Nov 8, 1999
Appl. No.:
09/435553
Inventors:
Jun Huang - Ottawa, CA
Fengchun Duan - Irving TX
Fengchun Duan - Irving TX
Assignee:
Spacebridge Networks Corporation - Hull
International Classification:
H04J 116
US Classification:
370232, 370230
Abstract:
A cell or packet-based Connection Admission Control (CAC) solution is provided for transmitting Protocol Data Units (PDU) such as Asynchronous Transfer Mode (ATM) user cells or Internet Protocol integrated and differentiated service packets. The CAC method and apparatus allocate network resources including user cell/packet transferring bandwidth in the channel/connection/flow set-up phase. The calculation of Effective Bandwidth is implemented in hardware using an additive-Fractal and measurement-based approach to shorten the processing time and to increase overall system reliability and efficiency.