US 11,863,812 B2
Video processing system for demultiplexing received compressed and non-compressed video signals and transmitting demultiplexed signals
Nobuaki Kabuto, Kunitachi (JP); Akira Shibata, Fujisawa (JP); and Yoshiaki Mizuhashi, Yokohama (JP)
Assigned to Maxell, Ltd., Kyoto (JP)
Filed by Maxell, Ltd., Kyoto (JP)
Filed on Feb. 28, 2022, as Appl. No. 17/682,236.
Application 14/248,691 is a division of application No. 13/400,746, filed on Feb. 21, 2012, abandoned.
Application 17/682,236 is a continuation of application No. 16/926,812, filed on Jul. 13, 2020, granted, now 11,297,375.
Application 16/926,812 is a continuation of application No. 15/873,256, filed on Jan. 17, 2018, granted, now 10,750,227, issued on Aug. 18, 2020.
Application 15/873,256 is a continuation of application No. 15/179,154, filed on Jun. 10, 2016, granted, now 9,906,828, issued on Feb. 27, 2018.
Application 15/179,154 is a continuation of application No. 14/248,691, filed on Apr. 9, 2014, granted, now 9,392,321, issued on Jul. 12, 2016.
Application 13/400,746 is a continuation of application No. 11/475,137, filed on Jun. 27, 2006, granted, now 8,130,794, issued on Mar. 6, 2012.
Claims priority of application No. 2005-185925 (JP), filed on Jun. 27, 2005.
Prior Publication US 2022/0272403 A1, Aug. 25, 2022
Int. Cl. H04N 21/426 (2011.01); H04N 21/432 (2011.01); H04N 21/433 (2011.01); H04N 21/434 (2011.01); H04N 21/43 (2011.01); H04N 21/41 (2011.01); H04N 7/088 (2006.01); H04N 21/4147 (2011.01); H04N 21/437 (2011.01); H04N 21/4385 (2011.01); H04N 21/436 (2011.01)
CPC H04N 21/42615 (2013.01) [H04N 7/088 (2013.01); H04N 21/411 (2020.08); H04N 21/4104 (2013.01); H04N 21/4122 (2013.01); H04N 21/4147 (2013.01); H04N 21/4263 (2013.01); H04N 21/437 (2013.01); H04N 21/4307 (2013.01); H04N 21/4325 (2013.01); H04N 21/4332 (2013.01); H04N 21/4334 (2013.01); H04N 21/4344 (2013.01); H04N 21/4347 (2013.01); H04N 21/4348 (2013.01); H04N 21/43074 (2020.08); H04N 21/4385 (2013.01); H04N 21/43615 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A video signal processing device, comprising:
a video interface that receives a compressed video signal encrypted with a first encryption method from an external device and outputs an uncompressed video signal to the external device;
a decryption processor that decrypts the compressed video signal received by the video interface and encrypted with the first encryption method;
a decoder that decodes the compressed video signal that is decrypted by the decryption processor and generates the uncompressed video signal; and
an encryption processor that encrypts an uncompressed video signal to be output from the video interface with a second encryption method,
wherein the video interface connects with the external device via an interface cable, and
wherein the video interface receives the compressed video signal from the external device and outputs the uncompressed video signal that is encrypted by the encryption processor to the external device through a bi-directional line in the interface cable.