Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Yoshiki Kuno

Toshikazu Koudo

Masaharu Imura

Yoshitaka Yaguchi

Hidefumi Ishibashi

Yasuhisa Mashiko

Masazumi Yamada

Kenichiro Yamauchi

Hiroyuki Iitsuka

Shuichi Yoshida

Shoichi Gotoh

Noriaki Kubo

Takuya Nishimura

Takanori Okada

Hideaki Takechi

Toshiaki Tsuji

Ryogo Yanagisawa

Hirotoshi Uehara

Ryosuke Shimizu

Jyun-ichi Komeno

Kazuhiro Mihara

Yasushi Ayaki

Shoichi Goto

Junichi Komeno

Noritaka Akagi

Hitoshi Ono

Toshikazu Kodo

Ryuichiro Tanaka

Hiroyuki Iltsuka

Shinichirou Takigawa

A video/audio processing device, such as a DVD recorder, includes a controller for controlling a state of power-on/off. The controller has a first standby mode and a second standby mode having power consumption larger than that of the first standby mode in a power-off state of the video/audio processing device. The first standby mode is a mode for maintaining a power of the video/audio processing device in the 'off' state. The second standby mode is a mode for maintaining the power of the video/audio processing device in an apparent 'off' state. The controller switches between the first standby mode and the second standby mode in conjunction with a state of power-on/off of external equipment such as television.

Video/audio processing device and apparatus connected to the same

In jumping reproduction, when an MPEG transport stream processed by the jumping reproduction is decoded and displayed, many noises occur in the video and the audio corresponding to the vicinity of the jumping. Provided are: a hard disk sectionof reading and reproducing AV data recorded as an MPEG transport stream in a recording medium; and an AV transfer control blockof controlling the hard disk sectionin such a manner that during the reproduction of the AV data, when the reproduction is performed with skipping a predetermined portion of the AV data, before the skipping of the predetermined portion, transport packets are outputted up to the last one among those constituting a frame, and that after the skipping of the predetermined portion, transport packets are outputted starting from the beginning transport packet of the next I frame.

Reproduction apparatus, reproduction method, recording apparatus, recording method, AV data switching method, output apparatus, and input apparatus

An encryptor is provided for encrypting AV data sent from an interface. A controller controls recording of the encrypted AV data by controlling a recorder for recording the encrypted AV data in a magnetic disk. The recorder is controlled by the controller so as to reproduce the data recorded on the disk. A decrypter decrypts the reproduced data that is sent to the interface.

Recording apparatus, reproduction apparatus, data processing apparatus, recording and reproduction apparatus and data transmission apparatus and corresponding methods

A multichannel display data generating apparatus for generating data for displaying AV data on a multiscreen has a plurality of screens for displaying AV data of a plurality of channels, said apparatus comprising:

Multichannel display data generating apparatus, medium, and informational set

Continuous transfer of AV data without a break necessitates to perform replacement processing of a disk access unit and takes labor and time. A characteristic is that an HDD is disposed which writes AV data in a recording medium, that an AV recording/reproducing controller is disposed which, when there is a write error in writing of AV data in a disk access unit which is a minimum unit for continuously accessing the recording medium, controls the HDD such that this disk access unit will be skipped and said AV data will be written in the next disk access unit, that skip processing judging means is disposed, and that a replacement area is not formed in the recording medium.

Recording/reproducing apparatus, recording/reproducing method, medium, and program

Alternation processes reduce the recording and reproducing speed of a hard disk apparatus. A hard disk apparatus comprising: an HDDfor recording AV data onto a hard disk; and stream controlling meanswhich is connected to the HDDand thereby processes the signal of AV data transmitted from an IEEE1394 I/F 7 or the signal of AV data transmitted to the IEEE1394 I/F 7; whereby the hard disk apparatus can record and/or reproduce the AV data, wherein when AV data transfer is not normally completed for a disk access unit which is a minimum continuous unit in the access to the hard disk, an alternation process on a disk access unit basis is carried out so that another disk access unit is used hereafter in place of that disk access unit.

Hard disk apparatus, medium, and collection of information

A reproduced image transmission apparatus which can display reversely reproduced images normally even when the transfer order of asynchronous transfer and isochronous transfer is not ensured on IEEE1394, in cases where an apparatus for generating the reversely reproduced images and an apparatus for decoding the reversely reproducing images are connected with each other via an IEEE1394 network. An MPEG transport stream processing means 15 embeds control signal for controlling decoding in an MPEG picture, and transmits the signal together with the MPEG picture through the IEEE1394 network in the isochronous transfer mode, whereby the synchronization between the MPEG picture and its control signal is surely obtained, thereby to generate reversely reproduced images according to MPEG using P and B pictures.

Reproduced image transmitting apparatus

A multichannel display data generating apparatus displays AV data on a plurality of screens. A channel displayed on one of the screens is displayed without a program clock reference.

Display apparatus displaying certain data without a program clock reference

There is a PSI receipt waiting time of two seconds or so from a start of decoding of an MPEG transport stream to actual display of AV data. There are provided first means of recordingfor recording a predetermined signal discretely including additional information of a program; means of controlling recordsfor having said predetermined signal recorded by first means of recording; means of controlling reproductionfor having said predetermined signal reproduced from said first means of recording; means of detecting PSIfor detecting program specific information (PSI) from said predetermined signal; and means of adding PSIfor adding said PSI to said predetermined signal.

Recording and reproducing apparatus, MPEG image stream recording and reproducing

The problem to be solved is that once copyright claimed AV data is passed to application software, the application software can freely process the AV data for recording, etc., defeating the purpose of copyright protection. The invention provides a computer which comprises a system sectionand an application software section, and which takes in copyright claimed, encrypted data via a digital interfacefor processing therein, wherein the system sectionjudges that the application software sectionis legitimate application software for the protection of copyright, and if the application software is a legitimate one, the system sectionpasses a key for the encrypted data to the application software section

Computer and program recording medium

A recording and reproducing apparatus is characterized in that said apparatus has: inputting means for receiving a packet data which is based on IEEE 1394, and in which signal information for indicating copy right information of an AV data (hereinafter, referred to as EMI) is provided in a header of a packet according to IEEE 1394; and recording and reproducing means for recording and reproducing an AV data and the EMI which are held in the packet data received by said inputting means. Four kinds of EMI are used, and, when an AV data indicating allowance &ldquo;copy one generation&rdquo; among them is to be recorded, said recording and reproducing means performs recording while rewriting the EMI to EMI indicating &ldquo;no more copy.&rdquo;

Recording/reproducing apparatus, program recorded medium, recorded medium, cache device, and transmitter

A disk reproducing device comprising: clock signal extracting means for extracting a regenerative clock signal from a reproduced signal; synchronization detecting means for detecting a synchronizing signal from the reproduced signal; extracted clock signal verification means for verifying that the regenerative clock signal is correctly extracted; signal processing means for performing variable linear velocity reproduction; target reproducing speed setting means for setting a target reproducing speed; reproducing speed verification means for verifying that a reproducing speed reaches the target reproducing speed; and signal processing start command generating means for outputting a signal processing start command referring outputs of said extracted clock signal verification means and said reproducing speed verification means.

Growing community of inventors

Osaka, Japan

Yoshiki Kuno