Cong Nguyen

US Patent:

20040078104, Apr 22, 2004

Filed:

Oct 22, 2002

Appl. No.:

10/278586

Inventors:

Cong Nguyen - Cupertino CA, US
Tatsuo Yamamoto - San Mateo CA, US

Assignee:

HITACHI, LTD. - Tokyo

International Classification:

H04B001/00
G06F017/00
H03G003/00

US Classification:

700/094000, 381/104000, 381/086000

Abstract:

An in-vehicle audio system provides audio paths for a variety of audio sources. Volume control is provided to vary the volume level of audible sound of one or more audio sources when produced by a plurality of speakers. Audio path control is provided to enable communication with a communication device to occur at the same time the audio is delivered to the speakers.

US Patent:

20070260900, Nov 8, 2007

Filed:

May 3, 2006

Appl. No.:

11/417433

Inventors:

Cong Nguyen - Cupertino CA, US
Volker Politz - Livonia MI, US

International Classification:

G06F 1/00

US Classification:

713300000

Abstract:

A system comprises an integrated package including a microcontroller having a vehicle bus controller, e.g., a CAN controller, for communicating directly with a vehicle bus, the microcontroller being always active; and a microprocessor having a communication module for communicating with the microcontroller, and not having a vehicle bus controller for communicating directly with the vehicle bus. The system may further include a power switch circuit for enabling the microcontroller to control power to and the state of the microprocessor. The microcontroller and the microprocessor may intercommunicate via a dedicated channel. The microcontroller may also have a hard-coded sequencer for enabling the microcontroller to load microcontroller control code into internal RAM of the microcontroller, which it receives from the microprocessor.