Patents by Inventor Kuo-Hsun Liao

Kuo-Hsun Liao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080091608
    Abstract: A method for an Open Mobile Alliance (OMA) multimedia exchange allows a sender to send a multimedia data to a receiver via a rights issuer. The method begins by registering to the rights issuer and sending a pubic key from the sender to the rights issuer. Next, a right object and a content object are sent from the sender to the rights issuer, wherein the right object records a content key encrypted by a private key of the sender. Then, the public key is used by the rights issuer to decrypt the content key, and the right object and the content object are packaged into a DRM content format (DCF) object. Finally, an OMA download is used over the Air (OMA download OTA) to send the DCF object from the rights issuer to the receiver.
    Type: Application
    Filed: April 23, 2007
    Publication date: April 17, 2008
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Kuo-Hsun Liao, Chia-Chin Lin