Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1998-06-30
1999-04-06
Garber, Wendy
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
356112, 260 15, H04N 593, G11B 2700
Patent
active
058928812
ABSTRACT:
An encoding control unit obtains a quantization step size and a video encoding rate Rc on the basis of various kinds of conditions including a transmission time and image quality specified through an input unit by a user, and property of image contents from a signal compression processing unit. Next, the video encoding rate Rc is compared with a network transmission rate Rt which is obtained through a network IF unit. Then, if the transmission rate Rt of the network is smaller than the video encoding rate Rc and is present in the range any of values of which is equal to or larger than the value smaller than Rc by a predetermined quantity, then the quantization step size is corrected in such a way that the video encoding rate Rc is equal to or smaller than the transmission rate Rt of the network, or in such a way that the video encoding rate Rc is increased. As a result, it is possible to provide an apparatus for transmitting dubbing data of a digital VTR which is capable of suppressing the degradation of a transmission throughput.
REFERENCES:
patent: 4823333 (1989-04-01), Satoh et al.
patent: 4860114 (1989-08-01), Horikawa et al.
Sakazawa Shigeyuki
Takishima Yasuhiro
Wada Masahiro
Garber Wendy
Kokusai Denshin Denwa Kabushiki Kaisha
Onuaku Christopher
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