US 6,556,627 B2 · Information processing apparatus, information processing method and recording medium

Abstract

Encoding parameters of picture and higher layers of importance to a number of applications, and encoding parameters of slice and lower layers of no importance to all applications are converted into auxiliary packets inserted respectively into a V-blanking area and an H-blanking area of a video-data signal output by a history-information-multiplexing apparatus employed in a video-decoding system. On the other hand, a video-encoding system extracts back the auxiliary packets superposed on the V-blanking area and the H-blanking area from an input base-band video signal. As a result, a technique of superposing information on data can be changed in accordance with the importance of the information and required information can be fetched with ease.

Claims32

Dependent claims

An information-processing apparatus for decoding an input encoded stream and generating an output signal, said information-processing apparatus comprising:

extraction means for extracting auxiliary data from said input encoded stream;
separation means for splitting said auxiliary data extracted by said extraction means into first auxiliary data and second auxiliary data;
conversion means for converting said first auxiliary data and said second auxiliary data, which were separated by said separation means, into data having a predetermined format;
and
insertion means for inserting said first auxiliary data and said second auxiliary data, which were converted by said conversion means, into a first position and a second position of said output signal respectively.

2 more elements

An information-processing apparatus for generating a second encoded stream from a first input encoded stream and outputting said second encoded stream, said information-processing apparatus comprising:

decoding means for decoding said first input encoded stream;
and
generation means for encoding said first encoded stream decoded by said decoding means to generate said second encoded stream,
wherein:
said decoding means comprises:
first extraction means for extracting auxiliary data from said first input encoded stream;
separation means for splitting said auxiliary data extracted by said first extraction means into first auxiliary data and second auxiliary data;
conversion means for converting said first auxiliary data and said second auxiliary data, which were separated by said separation means, into data having a predetermined format;
and
insertion means for inserting said first auxiliary data and said second auxiliary data, which were converted by said conversion means, respectively into a first position and a second position of said first encoded stream decoded by said decoding means;
said decoding means decodes said first encoded stream by using said auxiliary data extracted by said first extraction means;
said generation means comprises:
second extraction means for extracting said first auxiliary data or said second auxiliary data respectively from said first position or said second position of said first encoded stream decoded by said decoding means;
and
selection means for selecting either said first auxiliary data or said second auxiliary data, which were extracted by said second extraction means;
and
said generation means encodes said first encoded stream decoded and supplied thereto by said decoding means by using said first auxiliary data or said second auxiliary data, which was selected by said selection means, to generate said second encoded stream.

14 more elements

An information-processing method adopted by an information-processing apparatus for generating a second encoded stream from a first input encoded stream and outputting said second encoded stream, said information-processing method comprising:

a decoding step of decoding said first input encoded stream;
and
a generation step of encoding said first encoded stream decoded at said decoding step to generate said second encoded stream,
wherein:
said decoding step comprises:
a first extraction sub-step of extracting auxiliary data from said first input encoded stream;
a separation sub-step of splitting said auxiliary data extracted at said first extraction sub-step into first auxiliary data and second auxiliary data;
a conversion sub-step of converting said first auxiliary data and said second auxiliary data, which were separated at said separation sub-step, into data having a predetermined format;
and
an insertion sub-step of inserting said first auxiliary data and said second auxiliary data, which were converted at said conversion sub-step, respectively into a first position and a second position of said first encoded stream decoded at said decoding step;
said decoding step is executed to decode said first encoded stream by using said auxiliary data extracted at said first extraction sub-step;
said generation step comprises:
a second extraction sub-step of extracting said first auxiliary data or said second auxiliary data respectively from said first position or said second position of said first encoded stream decoded at said decoding step;
and
a selection sub-step of selecting either said first auxiliary data or said second auxiliary data, which was extracted at said second extraction sub-step;
and
said generation step is executed to encode said first encoded stream decoded and supplied thereto at said decoding step by using said first auxiliary data or said second auxiliary data, which was selected at said selection sub-step, to generate said second encoded stream.

14 more elements

A recording medium employed in an information-processing apparatus for generating a second encoded stream from a first input encoded stream and outputting said second encoded stream, said recording medium used for recording a program executable by a computer to implement a method comprising:

a decoding step of decoding said first input encoded stream;
and
a generation step of encoding said first encoded stream decoded at said decoding step to generate said second encoded stream,
wherein:
said decoding step comprises:
a first extraction sub-step of extracting auxiliary data from said first input encoded stream;
a separation sub-step of splitting said auxiliary data extracted at said first extraction sub-step into first auxiliary data and second auxiliary data;
a conversion sub-step of converting said first auxiliary data and said second auxiliary data, which were separated at said separation sub-step, into data having a predetermined format;
and
an insertion sub-step of inserting said first auxiliary data and said second auxiliary data, which were converted at said conversion sub-step, respectively into a first position and a second position of said first encoded stream decoded at said decoding step;
said decoding step is executed to decode said first encoded stream by using said auxiliary data extracted at said first extraction sub-step;
said generation step comprises:
a second extraction sub-step of extracting said first auxiliary data or said second auxiliary data respectively from said first position or said second position of said first encoded stream decoded at said decoding step;
and
a selection sub-step of selecting either said first auxiliary data or said second auxiliary data, which was extracted at said second extraction sub-step;
and
said generation step is executed to encode said first encoded stream decoded and supplied thereto at said decoding step by using said first auxiliary data or said second auxiliary data, which was selected at said selection sub-step, to generate said second encoded stream.

14 more elements

Dependencies are inferred from the claim text.

Information processing apparatus, information processing method and recording medium

Life of this patent

Information processing apparatus, information processing method and recording medium

Life of this patent

Abstract

Claims32