US Patent 7584431 Communication system and terminal units connected thereto

Patent 7584431 was granted and assigned to Hitachi on September, 2009 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Hitachi

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75844310

Patent Inventor Names

Tsutomu Hara0

Nobukazu Kondo0

Shinichiro Okamura0

Tooru Yokozawa0

Hiroi Kazushige0

Kazuchika Ogiwara0

Masaya Umemura0

Date of Patent

September 1, 2009

Patent Application Number

107247780

Date Filed

December 2, 2003

Patent Primary Examiner

‌

Thanh T Vu

Patent abstract

A communication system including a network and at least two terminal units connected thereto. Each terminal unit includes a session controlling unit for controlling a session for enabling transmission/receiving of voice, image, handwritten data to/from the remote terminal unit individually, and a display unit for displaying the image and the handwritten data. The image data and the handwritten data are overlapped and displayed on a display of the display unit.

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