The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2002
Filed:
Dec. 04, 1998
Applicant:
Inventor:
Kiyoshi Shimizu, Kanagawa, JP;
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 7/167 ;
U.S. Cl.
CPC ...
H04N 7/167 ;
Abstract
An information broadcasting method, a receiver, and an information processing apparatus make it possible to secure safety of information transmission between an information center and information. By encrypting confirmation information with a method making it possible to decipher the confirmation information only in the information terminal that becomes its receiver when an information center transmits the contents of the response signal (S ) transmitted from the information terminal ( ) to the information center ( ) as the confirmation information, it becomes possible to secure safety of information transmission between the information center and information terminal.