US 9,812,172 B2
Video-processing apparatus, video-processing system, and video-processing method
Toru Mugimoto, Ishikawa (JP); and Yoshikazu Takabatake, Ishikawa (JP)
Assigned to PFU LIMITED, Ishikawa (JP)
Filed by PFU LIMITED, Kahoku-shi, Ishikawa (JP)
Filed on Feb. 25, 2016, as Appl. No. 15/53,910.
Claims priority of application No. 2015-223205 (JP), filed on Nov. 13, 2015.
Prior Publication US 2017/0140794 A1, May 18, 2017
Int. Cl. H04N 9/475 (2006.01); G11B 27/10 (2006.01); H04N 5/222 (2006.01)
CPC G11B 27/10 (2013.01) [H04N 5/222 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A video-processing apparatus comprising:
a master decoder serving as a decoder module connected to a synchronization signal generator; and
a slave decoder serving as a decoder module not connected to the synchronization signal generator, wherein
the master decoder includes:
a generator synchronization signal acquiring unit that acquires a generator synchronization signal for synchronization of video data based on a reference signal supplied from the synchronization signal generator,
a synchronization signal selecting unit that selects the generator synchronization signal as a selected synchronization signal to transmit the selected synchronization signal to the slave decoder via an internal bus, and
a master output controlling unit that outputs the video data based on the selected synchronization signal, and
the slave decoder includes:
a slave output controlling unit that outputs the video data based on the selected synchronization signal transmitted from the master decoder, wherein the master decoder further includes:
a synchronization signal generating unit that generates a master synchronization signal different from the generator synchronization signal, and
the synchronization signal selecting unit selects the generator synchronization signal or the master synchronization signal as the selected synchronization signal to transmit the selected synchronization signal to the slave decoder via the internal bus.