Methods and apparatus to provide content on demand in US PATENT DOCUMENTS
content broadcast systems are disclosed. An example method 3,794,922 A 2f1974. Osborne …

Secure content transfer systems and methods to operate the same are disclosed. An
example system includes a content server to encrypt content according to an encryption key …

Distributed media-aggregation systems and methods to oper ate the same are disclosed. A
disclosed example method com prises selecting a first media segment at a first media …

(*) Notice: Subject to any disclaimer, the term of this 5,371,551 A 12/1994 Logan et al. patent
is extended or adjusted under 35 5,386,587 A 1/1995 Yuzawa USC 154 (b) by 1838 …

US7409562B2 - Method and apparatus for encrypting media programs for later purchase and
viewing - Google Patents US7409562B2 - Method and apparatus for encrypting media …

Methods and apparatus to provide content on demand in content broadcast systems are
disclosed. An example method comprises receiving a first portion of a program via broadcast …

Conditional ENCRYPT, MULTIPLEX, Access MODULATE& UPLINK Metadata (eg ECMs, to
the customer's Digital Video Recorder (DVR) using a hidden channel and it is made …

5,371-55 A 2, 1994 5,926,205 A 7/1999 Krause et al. 5.3848. A 1, 1995 EM al 5,930,215 A 7,
1999 Fite et al. 5.386. 587 A 1, 1995 Street al. 5,933,500 A 8, 1999 Blatter et al. 5396.293 A …

US PATENT DOCUMENTS 4,613,901 A 9, 1986 Gilhousen et al. 4,633,309 A 12/1986 Li et
al. 4.675, 732 A 6, 1987 Oleson 4,694,490 A 9/1987 Harvey et al. 4,866,769 A 9/1989 Karp …

(57) ABSTRACT A method and apparatus that selectively pairs a receiver (132) configured
to receive a media program encrypted according to a media encryption key and a …