Sony Corporation

Sony Electronics Inc

Sony Group Corporation

Daisuke Hiranaka

Masatoshi Takashima

Jeongnam Youn

Yushin Cho

Kiyoshi Ota

Hajime Nitta

Yukio Yanagita

Nobuyuki Aoki

Hideyuki Narita

Hideharu Kashima

Katsumi Tahara

Shinji Negishi

Yoshiyuki Ito

Eiji Ogura

Mikita Yasuda

Noriaki Oishi

Yoshihiro Ishida

Keisuke Aoki

Tetsuya Okada

Kazutaka Urabe

Hirofumi Morimoto

Haruyoshi Murayama

There is provided an information processing device that operates in a device including a display unit and causes the display unit to display a plurality of specific frame images constituting a moving image having a smaller data size than that of a moving image captured by another device different from the device including the display unit.

Information processing device, method, and program for generating a proxy image from a proxy file representing a moving image

A method and apparatus for preprocessing a video signal prior to its being encoded. During preprocessing, features are extracted from the video signal into feature planes which are each adaptively filtered in response to estimations of feature activity. After feature extraction the signal which remains is referred to as a 'remaining signal', which is then noise filtered to remove a substantial portion of the noise. The feature planes and remaining signal are recombined into a preprocessed output signal configured for receipt and processing by a video encoder. A video encoder receiving the preprocessed video signal can generate higher quality and/or lower bit rate encoded video than one receiving the original source video. Preprocessing according to the invention is particularly well suited for use with encoders adapted to remove temporal and/or spatial redundancy, such as those implemented according to the MPEG2/4, or AVC/H.264 standards.

Adaptive preprocessing method using feature-extracted video maps

A method of deciding a target bit rate for wavelet-based image encoding based on the wavelet coefficients is described. The target bit rate is used for maintaining a high quality image. A minimum target bit rate and a maximum target bit rate are determined. A pseudo code length corresponding to the minimum target bit rate is calculated. The pseudo code length is calculated as a function of the wavelet coefficients. The corresponding pseudo code length is calculated for the maximum target bit rate. A curve between the pseudo code length and target bit rate is derived. Slope of the curve depends on buffer fullness. Using the curve, for a given pseudo code length, an appropriate target bit rate is derived. The derived target bit rate depends on the image content, and computing resources are able to be optimally used to attain similar quality for each image block of an image.

Target bit rate decision method for wavelet-based image compression

A method of detecting existence of visually thin lines in images is described herein. The method includes profile generation, profile analysis and deciding the existence of thin lines. The profile generation includes generating a profile in each direction of the input image. Multiple projection lines are projected along the direction and all of the pixel values along the projection lines are added and averaged to obtain a profile. The profile analysis includes determining presence of thin lines in the input image and also noticing if the direction of the thin lines is similar to that of the projection lines. At the third step, according to the analysis made, existence of thin lines in the image is decided.

Method of detecting the existence of visually sensitive thin lines in a digital image

A coding apparatus that can have a plurality of macro blocks processed concurrently macro blocks. The apparatus includes a plurality of macro block processing sections for coding moving picture data concurrently on a macro block by macro block basis, each macro block processing section being adapted to select a position or a region out of a plurality of regions produced by dividing a picture by a predetermined number of rows, detect a processable macro block by sequentially retrieving the macro blocks of the selected region according to a predetermined scanning sequence and code the detected processable macro block.

Coding apparatus, decoding apparatus, coding method and decoding method

A coding apparatus that can have a plurality of macro blocks processed concurrently. The apparatus includes a plurality of macro block processing sections for coding moving picture data concurrently on a macro block by macro block basis, and a state management section for managing the state of processing of each macro block in a single picture. The state management section being adapted to manage each macro block in a single picture in terms of being in a process completed state.

When a pause request occurs, an audio delay time constituted by a delay time of frames of audio data based on the video data frames is found. During the pause, a frame offset time constituted by the offset of the frame start time of the video data and the audio data is monitored. When a pause release request is issued, based on the audio delay time and the frame offset time, the audio correction time to be corrected in the pause request is calculated. Then, when it is judged that the audio data is advanced with respect to the video data based on the audio correction time cumulatively added for each pause request, the video data is delayed by one frame with respect to the audio data, while when it is judged that the audio data is delayed with respect to the video data, the audio data is delayed by one frame with respect to the video data.

Apparatus and method for synchronizing video data and audio data having different predetermined frame lengths

A data sending/receiving system having an information providing apparatus including a content data storage unit to store content data, and a streaming data generator to generate streaming transmission data from content data. The system also includes a streaming interface, a download file generator to generate a download file of content data and a download interface for the download file, which is connected to a data receiving terminal including a storage control circuit to control storage of content data into a content data recording unit. The system also include a packet information recording unit to record data packet ID information and a packet resend requesting circuit to request for resending a missing packet, via a network. Defect-free data can be transmitted with the real-time signal transmission being assured even when data is received, for recording, via a low-reliability network.

Data sending/receiving system and method, information providing apparatus and method, and data receiving apparatus and method

To provide a decoding method and a decoding device capable of reducing a power consumption in a decoding processing and a program for the same. The decoding method to be executed by a decoding device decoding a data to be decoded including a header data and an encoded data, including a steps of: generating a prediction load data indicating a prediction load in a decoding processing for the encoded data, based on an attribute data of the encoded data included in the header data; determining an operating frequency based on the generated prediction load data; and operating at the determined operating frequency to decode the encoded data.

Decoding method, decoding device, and program for the same

A data transmission method and a data transmission system not requiring a large delay unit for multiplexing and composition and capable of reducing the hardware scale, wherein when transmitting data among multiple points from a plurality of terminals arranged in a network, when the data at multiple points are transmitted to the terminals, in the network, identical packets are added different time stamps in accordance with the transmission delays, whereby the data shifted in accordance with the transmission delays are transmitted.

Data transmission method and data transmission system

A data transmission method able to maintain the quality of a transmitted image substantially same as that of one's own image and an apparatus using the method and a data transmission system, transmitting image data accommodated in a frame of a preset frame during communication between terminals, comprising capturing an image including a target image to be transmitted, making adjustments so that the target image to be transmitted from the obtained image substantially fully fills the image frame, and compressing and transmitting the adjusted image data in the image frame.

Data transmission method, apparatus using same, and data transmission system

An image encoder and its processing method for compression-encoding a dynamic image at a variable encoding rate in the case of an application required to perform real-time processing. A variable bit rate (VBR) control section ( ) determines a VBR control quantizing scale VBRq according to a VBR buffer value held in a VBR buffer recording section ( ). A constant bit rate (CBR) control section ( ) determines a CBR control quantizing scale CBRq according to an inputted maximum bit rate BRmax. A quantizing scale comparing section ( ) outputs the CBRq during constant rate encoding and outputs the larger one of the VBRq and CBRq during variable rate encoding. An image compression-encoding section ( ) encodes the inputted image signal at a quantizing scale outputted from the quantizing scale comparing section ( ) and outputs a bit stream (S ).

Image encoder and method of the same

A method and apparatus can determine the VBV delay from the bit rate without limiting the encoding time and raising the cost. An image compression-coding apparatus adapted to control the volume of generated codes on the basis of the occupied volume of the VBV buffer at the decoder side comprises an MPEG encoder for computationally determining the cumulative value of the number of input bits of each frame and output as volume of generated information, a number of input bits generating section for computationally determining the theoretical value of the number of input bits from the bit rate, a B(n) counter for replacing the value of the volume of generated information by the theoretical value at the end of a number of frames when the theoretical value of the number of input bits becomes equal to an integer and a VBV delay computing section for computationally determining the VBV delay on the basis of the occupied volume of the VBV buffer from the B(n) counter

Transmission method and transmission apparatus

A video signal compressing method and a video signal compressing apparatus for compressing a video signal for a system in which for a synchronism between a plurality of compressed signals must be maintained. A presentation time stamp and/or a decode time stamp are multiplexed in a stream for transmission in which a video signal is compressed to generate a compressed signal. The following are generated as access unit information (AUI) for use in multiplexing the compressed data of the video signal: a picture size value, a picture type value, a repeat first field value, and a flag indicating the occurrence of a big picture.

Video signal compressing method and apparatus, and compressed data multiplexing method and apparatus

A data reproducing method and apparatus for providing special reproductions such as a reverse reproduction quickly when it is specified. In the data reproducing apparatus comprising a demodulator for demodulating data read out of a digital video disk by a pickup, a buffer for temporarily storing the demodulated data and a decoder for decoding the data read out of the buffer into original video signals, further included is a control circuit for controlling the buffer so that an unread data area and an already-read data area in the buffer take about half of the total memory capacity, respectively. As a result, the data necessary for reverse reproduction or the like is present in the buffer, allowing the special reproduction to run quickly.

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Kanagawa, Japan

Daisuke Hiranaka