Kabushiki Kaisha Toshiba

Time Warner Entertainment Company, L.p.

Other

Teiichi Ichikawa

Hideki Mimura

Yumiko Taga

Hiroaki Unno

Christopher J Cookson

Tetsuya Kitamura

Jay Yogeshwar

Sheau-Bao Ng

Andrew Drusin Rosen

Greg B Thagard

Kazuhiko Taira

Hideo Ando

Yasufumi Tsumagari

Mikhail Tsinberg

Toshinori Odaka

Faramarz Azadegan

Yoichiro Yamagata

Minoru Ohta

Masaru Sakurai

David Lehmann

Yumiko Kubo

An information reproduction method comprises setting an imaginary access unit in a video object in which a still picture is recorded; and managing reproduction by use of the imaginary access unit.

Information storage medium, information reproduction device, information reproduction method

An information recording method of recording object information (VOB) and reproducing control information (PGC) is provided. In this method, while the object information is recorded, the reproducing control information (PGC) defining a method of reproducing the object information and further defining a predetermined command executed according to a predetermined operation of a user is recorded in an information recording medium, and a desired reproducing action can be carried out by allocating an arbitrary command and the like to an arbitrary operation.

Information storage medium having a program chain command table structure

In a picture data recording method of an aspect of this invention, main picture data having a first resolution, sub-picture data having the first resolution, and sub-picture data having a second resolution lower than the first resolution are compressed, packets are formed from the compressed data in accordance with predetermined units and multiplexed, and the multiplexed data is recorded on a recording medium.

Picture data recording method, picture data storage medium, picture data playback apparatus, and picture data playback method

According to one embodiment, an information recording medium includes a video object area for recording a video object formed of video object units which is a minimum unit for reproduction, and a highlight information pack which is included in the video object unit.

Information recording medium, information recording device, and information reproducing method

A method and system in which a section of a previously encoded digital bit stream is replaced with another section of encoded video. In order to remove a section of encoded video, it is necessary to determine the beginning and ending points of the encoded video in the digitally encoded bit stream. The addresses of the beginning and ending points of the encoded data cannot be simply looked up but are calculated by summing the bits consumed by each picture, the number of bits of the sequence header of each picture, the number of bits of each Group of Pictures (GOP) header, and all stuff bits. In order to encode the video which is to be inserted in place of the removed video, a process is performed which prevents decoding artifacts from appearing. This is accomplished by determining the last P-picture before the edit point and using it as a reference frame for frames after the edit point. Additionally, a short period of the original video encoded using its original quantizer values is included at the end of the video to be substituted. Alternatively, the encoder may be run so that an earlier encoded reference picture is not used. However, this requires extra bits to maintain picture quality because initial bidirectional frames of the substitute video will use only one reference frame instead of two.

Method and system to replace sections of an encoded video bitstream

An audiovisual encoding system using a multipass video encoder and a plurality of one-pass audio encoders. The number of audio encoders used by the system is equal to the number of audio tracks to be encoded divided by the number of passes required for the video encoding rounded up to the nearest integer, if necessary. The system allows the video encoder and audio encoders to be used at the same time so that the encoding of the video is completed at the same time as the encoding of all audio tracks is completed, using the minimum number of audio encoders.

Audiovisual encoding system with a reduced number of audio encoders

A data stream multiplexing apparatus having a stream modifier for producing modified sub-picture data stream from a sub picture data stream where a first sub-picture data unit containing pixel data forming a sub-picture image with a preset display time period is located along a time axis by additionally locating at least one of second sub-picture data unit having almost same contents as the first sub-picture data unit within the display time period of the first sub-picture data unit on the sub-picture data stream, and a multiplexer responsive to input modified sub-picture data stream produced by the stream modifying means and other data streams reproduced in synchronous with the modified sub-picture data stream, for multiplexing these streams after packetizing them by a prescribed length.

Data stream multiplexing apparatus and method and record medium therefor

Growing community of inventors

Yokohama, Japan

Teiichi Ichikawa