Fujitsu Corporation

Mitsubishi Automotive Engin. Co., Ltd.

Shin Fujita

Atsushi Ichiki

Tsuyoshi Miura

Akira Nakagawa

Kazuhiro Yamashita

Takato Ohashi

Yuichi Terui

Noriyuki Ihara

Naoyuki Takeshita

Yousuke Yamaguchi

Yasushi Umezaki

Hiroshi Ohtsuru

Naoshi Kayashima

Seiichi Kakinuma

Yasuhiro Itou

Shinya Yamadera

Nobuo Iwamura

Naofumi Kutsumi

Tadashi Kinoshita

Teruo Sakamoto

Kenji Mitsuishi

Tsutomu Kaneko

Yuichiro Watanabe

A footage collecting/broadcasting device includes a procedure, the procedure including: cyclically overwriting and storing input footage data in a storage section; periodically transmitting an existence confirmation request to an external device; setting, as a first start time to start protection of the footage data that excludes the inputted footage data from an overwrite target, a point in time reached by backtracking by a set time in cases in which the existence confirmation response from the external device is not detected a specific number of times.

Footage collecting/broadcasting device, footage collecting/broadcasting system, footage collecting/broadcasting method, and recording medium recorded with a program

A decoder is disclosed. A video decoder extracts, when receiving a video stream, video output time information attached to each video frame. Thereafter, a difference value calculator calculates a difference value between an occurrence time of a synchronizing signal and the video output time information. Further, an audio output time corrector corrects, using the difference value, audio output time information attached to each audio frame. Then, a video source outputs video represented by a video frame in synchronization with a synchronizing signal. An audio source outputs, when a value of reference time information and a corrected value of the audio output time information are synchronized, audio represented by an audio frame with the synchronized audio output time information.

Decoder and decoding method based on video and audio time information

An object of the present invention is to enable a real-time distribution even if the band of a network varies. A distributing apparatus receives a packet retransmission request or a packet restoration notification, which is transmitted from a receiving apparatus, with an error information receiving unit. If the number of received retransmission requests or that of restoration notifications becomes equal to or larger than a certain value, a distribution band controlling unit decreases a band used to distribute a packet by a certain band.

Packet distribution band controlling method, distributing apparatus, and video distributing system

An image transmitting apparatus includes input terminals, first frame buffers corresponding to the input terminals, a write controlling portion, a read clock generating portion, a read controlling portion, an image compressing portion, and an image transmitting portion. The image transmitting apparatus inputs data on digital frame images of one frame captured with video cameras and synchronous signals synchronized with the data on the digital frame images, respectively, within a predetermined period of time; processes the data including multiplexing and compressing the data; and outputs the data on the digital frame images encoded by the image compressing portion.

Apparatus and system to multiplex data on a plurality of digital frame images into data on one frame and to encode and transmit the data

A processing-coefficient decision unit decides a processing coefficient based on a format of the stream. A target-PTS decision unit multiplies an input PTS value by the processing coefficient, to set this as a target PTS used to determine the continuity of the pictures. A reference-PTS calculation unit sets the target PTS as an initial value of a reference PTS, sequentially adds an increment corresponding to the PTS value per picture, and calculates the reference PTS which is compared with the target PTS. A difference calculation unit calculates a difference between the target PTS and the reference PTS. A threshold determination unit compares an absolute value of the difference with the processing coefficient being a threshold and determines whether the absolute value of the difference is less than the processing coefficient.

Error determination device and error determination method

Each of a plurality of encoders calculates a first time by adding an encoding delay time commonly determined between the encoders to a value of an STC counter, and transmits a system stream generated by including the calculated first time to a decoder associated with the encoder in one-to-one correspondence, of a plurality of decoders constituting a decoding system. Each of the decoders calculates a second time by adding the first time to an estimated maximum value commonly determined between the decoders by adding a decoding delay time to a value of stream fluctuation of an output time occurring between the encoders, and outputs the divided image data decoded from the system stream to a synthesizer that synthesizes the image data at the calculated second time.

Encoding/decoding system, encoding system, and decoding system

A packet error correcting apparatus includes a retransmission request controlling unit controlling a timing of transmission of a retransmission request to a packet transmitting apparatus from a retransmission request transmitting unit according to whether an error correcting unit can restore the lost packet within a predetermined time period when loss of the packet is detected. In a packet receiving apparatus supporting both Forward Error Correction (FEC) and Automatic Repeat reQuest (ARQ), it is possible to control a timing of transmission of a retransmission request when packet loss occurs, thereby to regenerate video and/or voice with the most suitable delay time while suppressing transmission of unnecessary retransmission requests.

Apparatus and method for packet error correction

Apparatuses and methods for managing a process that include schedule management, quality, and process management features. Information is stored on an authorized person in charge and a conformity standard for the work to be managed. From this information, a managing method of the work to be managed from among a plurality of managing methods classified in advance is determined. Processes are determined for each management method, and a time limit determined by the authorized person in charge for each managed process. Adherence standards related to the managed processes are included, as well as records made of the process information including the performance quality of the managed process.

System for managing process and man-hour

When error correction data, which is to be inserted into transmission data at specific intervals, is generated by calculating exclusive-OR of the transmission data, cumulative exclusive-OR of the transmission data is continuously calculated independent of the error correction data insertion intervals. Exclusive-OR between a calculation of the exclusive-OR at the time of the previous error correction data insertion and a calculation of the exclusive-OR at the time of the current error correction data insertion is calculated, thereby generating error correction data to be inserted at the present time. This provides efficient error correction data calculation.

Method and apparatus for generating error correction data, and a computer-readable recording medium recording an error correction data generating program thereon

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Kawasaki, Japan

Shin Fujita