Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Yoshiaki Kusunoki

Masaaki Shimada

Chihiro Morita

Hiroshi Yamamoto

Tsuyoshi Abe

Kiyoyasu Maruyama

Isao Otsuka

Keiji Hatanaka

Yohei Kitahara

Youhei Kitahara

There are provided with a video recording apparatus and a scene change extraction method, by which a scene change can be extracted from a video while recording the video. The video recording apparatusincludes an encoderfor encoding video data P, an HDDfor storing an encoded stream outputted from the encoder, a stream controllerfor transferring the encoded stream outputted from the encoderto the HDD, a scene change extractorfor decoding the encoded stream outputted from the encoderand extracting a scene change in the decoded video data, and a recording controllerfor receiving an encoding-completion notification Ion a unit-of-encoding basis of the encoded stream from the encoderand outputting a scene change extraction instruction Cto the scene change extractor

Video recording apparatus, scene change extraction method, and video audio recording apparatus

A program recommendation apparatus includes a scene attribute extraction unit () for extracting attributes of scenes included in audio-video content, a frequency distribution obtaining unit () for counting occurrence frequencies of the scene attributes extracted scene by scene to obtain the frequency of each extracted attribute, and a recommended program selection unit that recommends audio-video content to be recorded or played back, based on a frequency distribution obtained by the frequency distribution obtaining unit (). The program recommendation apparatus can recommend a program to be played back, from among recorded programs, according to users' preferences and interests, even if the recorded programs lack pre-provided program information or attribute information.

Program recommendation apparatus

A reproduction device () includes: a resume information generation unit () which generates first resume information (R) indicating a reproduction stop operation position and second resume information (R) indicating a reproduction position at one or more of the following moments: upon switching of the reproduction operation type, upon switching of the reproduction information title and/or the chapter, and at regularly spaced reproduction time intervals; a resume information acquisition unit () which acquires the first resume information (R); and a resume information automatic acquisition means () which acquires the second resume information (R). Upon resume reproduction, the reproduction stop operation position indicated by the first resume information (R) or the reproduction position indicated by the second resume information (R) is selected, so that the reproduction is resumed at the selected position.

Reproduction device and reproduction method

During video audio recording, key frames are temporarily stored from the video audio stream to be recorded, and metadata is later generated from the temporarily stored key frames. Even if a CPU or system configuration of a relatively low performance is used, metadata generation can be carried out in parallel with the video recording operation.

Video audio recording/playback apparatus and method

There are provided steps of extracting parts of two image data as areas for analysis (S, S) and an image difference detection step (S) of detecting an image difference between the two images, based on a difference in image characteristic values of the regions for analysis; the regions for analysis in the two image data have identical size. If no image difference is detected, the region extraction steps may expand the regions for analysis (S) by adding part or all of the image data that was not previously included in the regions for analysis (S). Scene changes can be done rapidly in images and video.

Image difference detection method and apparatus, scene change detection method and apparatus, and image difference value detection method and apparatus

A video/audio playback apparatus that can continue playback even if the external storage means are disconnected during playback, includes a virtual file system sectionfor merging the video/audio information and playback control information of the optical discwith the video/audio information and playback control information of the local storageto configure a virtual file system; a pseudo file system generatorfor generating a pseudo file system; a RAMfor storing the generated pseudo file system; a disconnection detectorfor detecting disconnection of the local storagefrom the connecting section; and a playback managerfor causing the virtual file system sectionto merge the video/audio information and the playback control information of the optical discwith the information of the pseudo file systemimmediately after the disconnection is detected, thereby newly configuring the virtual file system.

Video/audio playback apparatus

A file transfer method and a file transfer system are provided for making it possible to minimize aggregate waiting time of the whole users for data transfer using a multicast protocol. In the file transfer method of transferring a plurality of program files from a recorder storing a plurality of program files via a network to a plurality of mobile terminals using a multicast protocol, the recorder determines order of transfers of the plurality of program files for the purpose of transferring the plurality of program files in order of digital data files, which is the ascending order of file size of the plurality of program files (step S), the recorder transfers the plurality of program files on the basis of the order of transfers (steps S-S), and the plurality of mobile terminals selectively receives the plurality of program files (steps S-S), thereby reducing aggregate waiting time that is a sum total of transfer time of the whole users.

File transfer method and file transfer system

An apparatus and method for programming the recording of broadcast programs, for programming recording by setting the recording start time and the recording end time of a given program in the broadcast program information is provided, wherein the apparatus and method for programming the recording of broadcast programs, delays the recording end time of programmed broadcast program, when a broadcast program is present in which an extension keyword is detected by searching electronic program guide information acquired regarding broadcast programs to be programmed, and electronic program guide information acquired regarding programs scheduled to be broadcast on the same channel and the same date as and prior to the programmed broadcast program, for predetermined extension keywords indicating program extension or delay.

Apparatus and method for programming the recording of broadcast programs and delaying the recording end times when extension key words are detected

I-frames are extracted from a normal play stream in an extract section (), coding parameters and control parameters, such as VBV delay, related to a decoder buffer are modified for trick play in an I-frame picture data conversion processor (), repeat pictures that display the same image content as the I-frames are generated and added following the I-frames in a repeat picture adder (), and the transfer rate is controlled in a picture data size controller (). This solves the problem that when trick play is executed between a server and a terminal on a network, if only I-frames are used the necessary network bandwidth may increase, a buffer may fail in the decoder that reproduces the trick play stream, and the reproduced video image may be disrupted.

Video data processing method and video data processing apparatus

A disc library apparatus has shelves for storing discs, at least one drive for accessing information on the discs, a motor-driven carrier that transports discs between the shelves and the drive, and a control unit. The carrier has a sensor for sensing discs. Each drive preferably has a stopper for restraining ejected discs. In a first aspect of the invention, the sensor also senses the stoppers of the drives, and a drive without a stopper is not used. In a second aspect of the invention, the control unit uses the sensor to acquire and update information giving the positions of the drives, as well as the positions of the discs. In a third aspect of the invention, the sensor is a reflective optical sensor.

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Tokyo, Japan

Yoshiaki Kusunoki