Data transfer method

Details Data transfer method Data transfer method

2007-05-15

2007-05-15

Smithers, Matthew (Department: 2137)

Cryptography

Video cryptography

Copy protection or prevention

C713S160000

Reexamination Certificate

active

09403560

ABSTRACT:
A data transfer method which eliminates erroneous operation of conventional devices not supporting encryption when copy-protected AV information is encrypted and sent on an IEEE 1394 bus. Synchronous data transferred through isochronous communication contains i) encryption identification information for indicating encryption of actual data and ii) actual data. Only the actual data is encrypted. Encryption identification information indicating encryption of actual data in synchronous data is sent together with actual data from the sending device. A receiving device detecting encryption of actual data from this encryption identification information requests decrypting information from the sending device. The receiving device decrypts the actual data using decrypting information received from the sending device according to this request.

REFERENCES:
patent: 5208807 (1993-05-01), Gass et al.
patent: 5706348 (1998-01-01), Gray et al.
patent: 5948136 (1999-09-01), Smyers
patent: 6028933 (2000-02-01), Heer et al.
patent: 6041051 (2000-03-01), Doshi et al.
patent: 6157972 (2000-12-01), Newman et al.
patent: 6349138 (2002-02-01), Doshi et al.
patent: 6438693 (2002-08-01), Nakano
patent: 6539094 (2003-03-01), Osakabe et al.
patent: 0 684 721 (1995-11-01), None
patent: 0 756 276 (1997-01-01), None
patent: 61-81043 (1986-04-01), None
patent: 61-260735 (1986-11-01), None
patent: 1/181349 (1989-07-01), None
patent: 1-307341 (1989-12-01), None
patent: 9-205421 (1997-08-01), None
Japanese language search report for Int'l Appln No. PCT/JP98/01837 dated Jul. 28, 1998.
English translation of Japanese language search report.
European Search Report corresponding to application No. EP 98-91-7616 dated Feb. 8, 2005.
Bloks R.H.J.: “The IEEE-1394 High Speed Serial Bus,” Philips Journal of Research, Elsevier, Amsterdam, NL, vol. 50, No. 1, 1996, pp. 209-216.

Affiliated with

Also associated with

Rating

Data transfer method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data transfer method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data transfer method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3802384