Bin A Gu, 567184 Via Vico, San Jose, CA 95129

6700956, Mar 2, 2004

Mar 2, 2000

09/517194

Tsung-Yen Dean Chang - Los Altos Hills CA
Chuang Li - Saratoga CA
Chee Hin Ho - San Jose CA
Bin Lang Gu - Sunnyvale CA

Actiontec Electronics, Inc. - Sunnyvale CA

H04M 1100

379 9309, 379 9305

Apparatus and methods are provided for selectively providing telephone service that is either PSTN-based or Internet-based using a standard analog telephone circuit. In a first embodiment, the apparatus comprises a hardware module and associated software for coupling a personal computer or Internet appliance and a standard analog telephone. The apparatus includes a DTMF interface circuit, a subscriber line interface circuit, a ring detection circuit, and an interface circuit for interfacing with the PC or Internet appliance. The apparatus permits the analog telephone to be toggled between an Internet-based telephone mode and a PSTN-network mode by inputting a predetermined sequence of DTMF digits. In alternative embodiments, the apparatus comprises a processor, modem and optionally, analog telephone circuit, to provide a stand-alone or partially-integrated device capable of selectively switching between PSTN-based and Internet-based telephony services.

2004019, Sep 30, 2004

Jan 27, 2004

10/766621

Tsung-Yen Chang - Los Altos Hills CA, US
Chuang Li - Saratoga CA, US
Chee Ho - San Jose CA, US
Bin Gu - Sunnyvale CA, US

ACTIONTEC ELECTRONICS, INC. - Sunnyvale CA

H04Q007/20
H04M003/42

455/426100, 455/417000, 455/445000

Apparatus and methods are provided for selectively providing telephone service that is either PSTN-based on Internet-based using a standard analog telephone circuit. In a first embodiment, the apparatus comprises a hardware module and associated software for coupling a personal computer or Internet appliance and a standard analog telephone. The apparatus includes a DTMF interface circuit, a subscriber line interface circuit, a ring detection circuit, and an interface circuit for interfacing with the PC or Internet appliance. The apparatus permits the analog telephone to be toggled between an Internet-based telephone mode and a PSTN-network mode by inputting a predetermined sequence of DTMF digits. In alternative embodiments, the apparatus comprises a processor, modem and optionally, analog telephone circuit, to provide a stand-alone or partially-integrated device capable of selectively switching between PSTN-based and Internet-based telephony services.

6345088, Feb 5, 2002

Aug 11, 1999

09/372418

Bin Lang Gu - Sunnyvale CA
Chuang Li - Saratoga CA

Actiontec Electronics, Inc. - Sunnyvale CA

H04M 1100

379 9335, 379 9001, 379 9328, 375222

A modem that handles interruptions caused by call waiting signals is described. When the modem detects a call waiting signal, the modem alerts the user to the presence of the call waiting signal, and permits the user to answer the incoming call by taking a local phone that is connected to the modem off-hook. When the local phone is taken off-hook, the modem automatically generates a hook-flash signal to switch to the incoming call. When the user places the local phone back on-hook, the modem generates another hook-flash signal to resume (if possible) the modem connection. Additionally, the modem prevents a âfallbackâ, in which the modem switches from its current protocol to a lower-speed protocol, during a âretrainâ process caused by a call waiting event.

2018006, Mar 1, 2018

Apr 11, 2017

15/485078

- Cupertino CA, US
Nilay D. Jani - San Jose CA, US
Bin Gu - Sunnyvale CA, US
Yongxuan Hu - San Jose CA, US

H02J 7/02
H02J 50/10
H02J 7/04
H02J 50/40

A wireless power transmitting device may transmit power wirelessly to a wireless power receiving device. The wireless power receiving device may be a portable electronic device with an array of wireless power receiving coils that receive wireless power from wireless power transmitting coils in the wireless power transmitting device. Each receiving coil in the array of wireless power receiving coils may be coupled to a respective rectifier. Control circuitry of the wireless power receiving device may be configured to determine which rectifiers to enable for synchronous rectification. The control circuitry may be configured to enable at least one rectifier based on the alternating-current voltages produced by each coil in the array of receiving coils. The control circuitry may also be configured to enable at least one rectifier based on the output current from each rectifier.