Hitachi, Ltd.

Hitachi Video Engineering, Incorporated

Maxell, Ltd.

Hitachi Maxell, Limited

Hitachi Video and Information System, Inc.

Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Hitaci, Ltd.

Takuya Imaide

Toshiro Kinugasa

Ryuji Nishimura

Masaru Noda

Naozumi Sugimura

Hiroyasu Ohtsubo

Noriyuki Iura

Naoki Yamamoto

Hiroyuki Komatsu

Tomoyuki Kurashige

Susumu Yoshida

Shinya Ohba

Nozomu Shimoda

Akinobu Watanabe

Akihito Nishizawa

Hiroshi Sakurai

Toshihiro Kato

Taku Nakamura

Junji Kamimura

Yoshihiro Todaka

Kouji Asada

Iwao Takemoto

Michio Masuda

Toshifumi Ozaki

Haruhisa Ando

Yasushi Takagi

Masaaki Nakai

Hiroyuki Tarumizu

Satoshi Takase

Mayuko Yamamoto

Masahiro Kageyama

Toshiyuki Akiyama

Keisuke Inata

Hiroaki Yoshio

Kenji Takahashi

Iwao Aizawa

Yoshimichi Kudo

Kenji Ichige

Akihide Okuda

Kazuhiro Koshio

Teruki Niki

Masaomi Ueda

Takuya Iguchi

Mayuko Oda

Hiroaki Kami

Masakazu Aoki

Takahiro Nakano

Shinichi Yamada

Makoto Shioya

Hiroshi Koizumi

Masaharu Kubo

Kouji Kitou

Ikuya Arai

Koichi Seki

Michitaka Ohsawa

Hiroki Mizosoe

Yuji Sano

Morishi Izumita

Takeshi Hoshino

Shusaku Nagahara

Kazuaki Takano

Hiroyuki Kuriyama

Eiichi Yamazaki

Kiyoharu Kishimoto

Kenichirou Kurata

Tomomitsu Kuroyanagi

Hiroaki Nabeyama

Moritaka Taniguchi

Naoyuki Tanaka

Norio Yatsuda

Minoru Kato

Masaaki Kurosu

Hisao Ohdawa

Tomoko Ogawa

Hitoshi Yamadera

Mariko Tanaka

The problem to be solved is to make it possible to download via a network, efficiently manage, retrieve, and reproduce an external content associated with a content recorded on a recording medium. To solve the problem, a program is used which controls reproduction of information located on a recording medium and related information. The program includes the steps of: obtaining from the outside specific information associated with predetermined information recorded on a recording medium; and obtaining medium identification information located on a recording medium; wherein if the specific information has been obtained, a storage unit in a reproducing apparatus is controlled to associate the specific information with the medium identification information for storage.

Program, recording medium, and reproducing apparatus

The present invention is a decoding apparatus for decoding an encoded video signal capable of displaying a secondary video synchronously with a primary video. The decoding apparatus includes: an auxiliary information analyzing part that analyzes auxiliary information including display auxiliary information about a display position and/or a display size of the secondary video, and applied time information by which the display auxiliary information is applied; a reference time counter that indicates a reference time at which a video is decoded and displayed; a comparing part that compares the applied time information with the reference time counter; a display screen forming part that uses a primary video and a secondary video to form a display screen; and a control part that controls the display screen forming part, wherein the control part controls the display position and/or the display size of the secondary video by affording a command to the display screen forming part using the display auxiliary information, based on an output result of the comparing part.

Decoding apparatus for encoded video signals

A reproducing device for playing back data from a recording medium, including: playback circuits for playing back at least two stream data in a time division multiplexing manner from a recording medium that records: first stream data which includes first video data, first audio data, and first sub-picture data, and second stream data which includes second video data, second audio data, and second sub-picture data; and selection circuits for conducting at least one of: switching from the first video data to the second video data, switching from the first audio data to the second audio data, and switching from the first sub-picture data to the second sub-picture data; wherein data which is newly switched by the selection circuits and the data which is not switched by the selection circuits, are synchronously superimposed and outputted.

Reproducing device

A reproducing device for playing back data from a recording medium, including: play back circuits for reading first stream data, which includes first video data, first audio data, and first subpicture data, from a recording medium; download data storage circuits for storing second stream data, which includes at least one of second video data, second audio data and second subpicture data downloaded via a network; and selection circuits for conducting at least one of: switching from said first video data to said second video data; switching from said first audio data to said second audio data, and switching from said first subpicture data to said second subpicture data; wherein data which is newly switched by said selection circuits and data which is not switched by said selection circuits are synchronously superimposed and outputted.

Arrangements for playing back data from a recording medium, including: first playback circuits for reading first stream data which includes first video data, first audio data, and first sub-picture data, from a first recording medium; second playback circuits for reading second stream data which includes at least one of second video data, second audio data, and second sub-picture data, from a second recording medium; and selection circuits for conducting at least one of: switching from the first video data to the second video data, switching from the first audio data to the second audio data, and switching from the first sub-picture data to the second sub-picture data; wherein data newly switched by the selection circuits and the data which is not switched by the selection circuits are synchronously superimposed and outputted.

Heretofore, there have been problems in which data prerecorded on a recording medium cannot readily be played back in synchronism with data downloaded via a network because the simultaneous use of a plurality of download data has not been taken into consideration. To solve such problems, data is played back by using a first buffer memory for temporarily storing a stream that is received at one input terminal, a demultiplexer for demultiplexing packets output from the first buffer memory in accordance with packet ID numbers, second buffer memories for temporarily storing a stream that is input from another input terminal, and a packet switcher for operating selector switches to select and output either packets output from the demultiplexer or packets output from the second buffer memories.

A surveillance system having surveillance terminals and a surveillance center is configured to perform effective hazard alert signaling, depending on the hazard type. The surveillance system comprises a plurality of surveillance terminals, which are connected to the surveillance center by a network, carries out hazard and alert signaling. One surveillance terminal detects a hazard and sends a hazard information signal reporting what hazard has just been detected to the surveillance center. The surveillance center receives the hazard information signal, identifies what type of hazard source and the surveillance terminal that sent the hazard information signal, selects surveillance terminals to be alerted to the hazard from among the plurality of surveillance terminals, depending on the identified type of the hazard source and its locality, and sends a hazard alert signal to the selected surveillance terminals.

Surveillance system with surveillance terminals and surveillance center

A security camera system having one or more monitoring cameras, each of which transmits a digital video signal after compressing/encoding, are connected to a controller via a network. In the controller, a media control section stores the video signal supplied from the monitoring cameras in a storage medium and reads out the video signal as needed. Image processing for privacy protection is carried out to the real-time video signal supplied from the monitoring camera and the video signal read out from the storage medium. The level of the image processing for privacy protection is switched depending on the authority of a user who views the video image. Further, even for the same user authority, the image processing level for privacy protection is switched and adjusted depending on the size of the object in the video image.

Security camera system

In a bitstream transcoder, the computational cost and the memory area are suppressed so that stream transcoding is performed with a reduced number of times of computing and a reduced memory area. The transcoder includes a VLD portionfor performing VLD on a bitstream encoded in MPEG-2 to output quantized DCT coefficients; an IQ portionfor receiving the coefficients, and outputting inverse-quantized DCT coefficients; a coefficient tablefor storing a transformation matrix obtained by multiplying transformation matrices for operating band-limiting filter, IDCT, down-sampling and DCT, respectively, together in advance; a DCT scaling portionfor performing down-sampling on the DCT coefficients by use of the transformation matrix; a Q portionfor outputting quantized DCT coefficients down-sampled horizontally and vertically; and a VLC portionfor encoding the quantized DCT coefficients in MPEG-4 to output a bitstream.

Bitstream transcoder

The invention relates to an image pickup apparatus for outputting a video signal encoded in order to compress information amount of a photographed image. The apparatus includes: an image pickup device for outputting a digital video signal; a control unit to control the image pickup device; and an encoding apparatus for encoding the digital video signal which is output from the image pickup device. The control unit generates control information of the image pickup device. The encoding apparatus changes encoding characteristics on the basis of the control information. Further, the encoded digital video signal is recorded and/or reproduced onto/from a recording medium and the signal reproduced from the recording medium is decoded. Moreover, a motion vector of a hand vibration or the like is detected from the photographed video signal and is corrected. In addition, an output signal of the encoding apparatus is output to a digital communication terminal and the signal input from the digital communication terminal is decoded.

Image pickup apparatus having image information compressing function

Growing community of inventors

Fujisawa, Japan

Takuya Imaide