Zhenyu Liu, 59Camas, WA

2002019, Dec 19, 2002

May 30, 2001

09/871487

Zhenyu Liu - Pleasanton CA, US
Lang Chen - Fremont CA, US

H04M001/64

379/088010

A voice activation system for a home or office computer allows a user at a remote location to telephone the computer. A modem or other voice hardware for the computer provides a voice signal from the user to a voice activation system that analyzes the voice signal. When the voice activation system recognizes spoken commands in the voice signal, the voice activation system activates procedures according to the spoken command. One procedure in a system that uses the analog voice signal on a telephone line for voice and data hangs up on the user, contacts a dial-up service, downloads voice or e-mail messages from the dial up service, and the calls the user back. Another procedure accesses data such as a telephone number list stored in the computer and converts the data into a voice signal sent to the user at the remote location. With this system, the user can remotely access a computer and retrieve e-mail, voice mail, telephone numbers, and other information without special hardware such as a portable computer and can conduct the remote access without the need for hand touch.

2006009, May 11, 2006

Nov 5, 2004

10/982439

Zhenyu Lawrence Liu - Pleasanton CA, US
Xin Chen - Pleasanton CA, US
Lang Shie Chen - Fremont CA, US

G09B 3/00

434350000, 434362000

A teaching system provides explanatory materials, examples, and problems on an interactive basis and adapts to the student. The system can generate random questions for presentation to the student as multi-step examples or practice problems. The student's answers during each step of a multi-step practice problem can be evaluated to identify weaknesses. Identified weaknesses can be remedied by presenting additional explanations, providing additional practice problems, and revisiting the weaknesses by inserting practice problems of the identified type into the student's subsequent lessons. The system can also adapt adjusting the speed or number of steps presented according to the student's performance. The system can further provide detailed analysis or diagnosis of the student's performance that can be communicated to teachers and/or parents for use in other teaching environments. The teaching system when embodied in a web site further provides communication among students, teachers, and parents.