US 2006/0233534 A1 · Method and device for recording digital data

Abstract

Various applications record or handle uncompressed video, where the amount of information needed for each frame or field is constant, based on the video frame rate and color resolution of each pixel. Since various video frame rates and audio sample rates are defined and can be combined independently, the amount of audio samples per video frame may vary. The disclosed method allows packing audio samples and video samples into constant size containers, e.g. MXF containers, so that there is an integer amount of audio samples within the time period needed for one video frame, independent from the used video raster. The method includes generating constant length KLV encoded video packets, generating variable length KLV encoded audio packets corresponding to the same time period as the video packets, generating variable length KLV encoded data packets, wherein the sum of the lengths of the audio packet and the data packet are constant, and generating from said packets a constant size content package.

Claims13

Dependent claims

A method for recording digitized video, audio and additional system data, wherein a defined video frame rate or field rate and a defined audio sample rate are used, including the steps of

receiving constant length digital data including camera data and constant length timecode data;
generating a first KLV encoded packet containing a full frame or field of the digitized video data, wherein the first packet has predetermined constant size;
generating a second KLV encoded packet containing digitized audio data substantially corresponding, within a predefined range, to said digitized video data of the first packet, wherein the digitized audio data is an integer number of audio samples that is determined by the video frame rate or field rate and the audio sample rate;
determining the difference between said amount of data of the second KLV encoded packet and a predefined maximum amount of data;
generating a third KLV encoded packet containing at least the timecode data and default data, wherein the amount of the default data is said difference plus a non-negative integer constant;
and
recording an application packet containing at least the first, second and third KLV encoded packets.

4 more elements

Dependencies are inferred from the claim text.

Method and device for recording digital data

Life of this patent

Method and device for recording digital data

Life of this patent

Abstract

Claims13