Moving image encoding apparatus, control method therefor, and non-transitory computer readable storage medium

Patent metadata

Field	Value
Publication number	US-9319682-B2
Application number	US-201313924162-A
Country	US
Kind code	B2
Filing date	Jun 21, 2013
Priority date	Jul 6, 2012
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

A moving image encoding apparatus comprising a calculation unit configured to calculate an expected occupation amount of a virtual buffer when a picture contained in a generated encoded stream is held for decoding processing, and a code amount control unit configured to control a generated code amount in an encoding unit based on information of the occupation amount, wherein every time a predetermined group of pictures in the encoded stream starts, the calculation unit sets a virtual buffer having an initial value, and updates the occupation amount of the virtual buffer based on a size of the picture contained in the encoded stream, and the generated code amount is compared with a smallest occupation amount of the plurality of virtual buffer occupation amounts, and controls the generated code amount not to exceed the smallest occupation amount.

First claim

What is claimed is:

1. A moving image encoding apparatus comprising
an encoding unit configured to encode moving image data in unit of a group of pictures including a predetermined number of frames and generate an encoded stream;
a holding unit configured to hold the encoded stream generated by the encoding unit,
a write unit configured to write, in response to a recording start instruction, the encoded stream held by the holding unit in a recording medium and to combine the w…

Assignees

• Canon Kk

Inventors

• Togita Koji

Classifications

• H04N19/152

  Electricity · mapped topic

• H04N19/115

  Electricity · mapped topic

• H04N19/00763 Primary

  Electricity · mapped topic

• H04N19/172 Primary

  Electricity · mapped topic

• H04N19/593 Primary

  Electricity · mapped topic