Hitachi, Ltd.

Nec Corporation

Canon Kabushiki Kaisha

Hitachi Microcomputer System, Ltd.

Shigeru Yoneda

Kazuaki Tanaka

Satoshi Wakayama

Jun Nitta

Ichiro Yokoyama

Shoji Yamamoto

Kenji Katsumata

Yoshito Kamegi

Takumi Okamura

Mikihiko Tokunaga

Makoto Urakawa

Takeshi Kamoshida

Kiyotaka Kiyasu

Takahiro Sato

Hideo Ohata

Hiroyuki Koreeda

Shuichiro Matsushima

Akio Furukawa

Tetsuya Masuishi

Toshihiro Kato

Yutaka Urino

Takanori Eda

Yoshikazu Sugiyama

Tadahiko Hanada

Tomoko Kimura

Yuko Seki

Hideo Mutoh

Shoichi Kosuge

Masaru Nanki

Ikuyo Ozu

Takashi Iihama

Kazuaki Tanka

Naoki Ofusa

Tetsuo Murakawa

Shou Urabe

A recording apparatus, including a recorder that records moving image data into a recording medium designated as a recording destination among a plurality of recording media; a reader that reads out, from the recording medium, temperature information on a current temperature of the recording medium; and a controller that controls the recorder based on a recording speed corresponding to a temperature indicated by the temperature information read out by the reader, wherein the controller controls, if a recording speed corresponding to a temperature indicated by first temperature information read out by the reader from a first recording medium designated as the recording destination during recording of the moving image data into the first recording medium is lower than a predetermined recording speed, the recorder to switch the recording destination from the first recording medium to another recording medium and continuously record the moving image data into the another recording medium.

Recording apparatus and recording method

A recording apparatus including: a recording unit configured to record on a recording medium a file that includes sequentially obtained data; a repair unit configured to repair a predetermined file that needs to be repaired out of files recorded on the recording medium; and a control unit configured to control the recording unit so that recording of data is stopped in response to a drop of a free capacity of the recording medium to a predetermined capacity during recording of the data, the control unit being configured to determine the predetermined capacity based on a data amount necessary to repair the predetermined file that is recorded on the recording medium, to thereby control the recording unit so that the recording of the data is stopped in response to a drop of the free capacity of the recording medium to the predetermined capacity during the recording of the data.

Recording apparatus and method of controlling recording apparatus

A recording apparatus is arranged to control a file name of recorded moving image file and a file name of the recorded still image file, so as to, after a recording stop instruction, in accordance with the file name of at least one of the moving image file and still image file recorded in a period of time from a recording start instruction to the recording stop instruction, change the file name of at least one of the moving image file and still image file recorded in that period so that the file names of the plurality of moving image files recorded in that period have consecutive file numbers corresponding to recording order of the moving image files and the file names of the plurality of still image files recorded in that period have consecutive file numbers corresponding to recording order of the still image files.

Recording apparatus, recording method, and program

A reproducing apparatus comprises a reproduction unit which reproduces a moving image file and a still image file from a recording medium, a file name including a number being added to each of the moving image file and the still image file, and a control unit which controls the reproduction unit such that the plurality of moving image files for the single scene are continuously reproduced while the still image file to which the file name including the number between the numbers included in the file names of the two moving image files is added is not reproduced, during reproduction of the plurality of moving image files for the single scene.

Reproducing apparatus and method for controlling the same

An image pickup apparatus includes an image pickup unit adapted to pickup a moving image, a shooting condition storage unit adapted to store shooting conditions to be used in the image pickup unit, an instruction unit adapted to issue a shooting condition read instruction during moving image shooting by the image pickup unit, a display unit adapted to, when the read instruction has been issued from the instruction unit, display information associated with the shooting conditions stored in the shooting condition storage unit, a selection unit adapted to select a desired shooting condition from information associated with the shooting conditions displayed on the display unit, and a setting unit adapted to set the shooting condition selected by the selection unit.

Image pickup apparatus and image pickup method

An image data recording apparatus includes an area producing device producing a plurality of areas on a recording medium, an initialization device initializing the areas produced by the area producing device in accordance with desired forms, an area production designating device causing a user to designate a number of the areas produced by the area producing device and a recording capacity of each of the areas, and a format designating device causing the user to designate a kind of a format of each of the areas produced by the area producing device.

Image data recording or storing apparatus, computer program for controlling said apparatus, and method for initializing areas on a recording medium

Initialization information including the number of areas to be produced on a recording medium, the capacities of the respective areas, and the types of the formats is produced. The recording medium is initialized in accordance with the initialization information. The initialization information is saved after the initialization processing. The saved preceding initialization information is exhibited to a user as one of the choices of initialization methods at the time of the next initialization of the recording medium.

Data recording apparatus, initialization method of recording medium, and storage medium

In a transmission apparatus, still picture outputting control information is multiplexed to a transmission signal and in a receiving apparatus, still picture is extracted from moving picture. Still picture data to be outputted can be processed and the charge can be set for each kind of processing. A broadcasting system and a receiver can output the still picture data of which the copyright is protected in accordance with use.

Data transmission and receiving apparatus for digital broadcast signals which include control information

An array waveguide diffraction gratingas waveguide type optical device comprises a planar lightwave circuitwith an optical waveguide layerformed on a silicon substrateand having a predetermined thickness h, a first compensation substratebonded to the side of the optical waveguide layerand having a thickness hand a second compensation substrateformed on the silicon substrateand having a thickness h. The linear expansion coefficients &#x3b1;and &#x3b1;of the two compensation substratesandare set to be greater than that of the optical waveguide elementand highly rigid adhesives are used as a first and a second adhesiveandIt is thus possible to have the contraction of the optical waveguide elementdue to a temperature change increased with the first and second substrates, thus permitting the center frequency setting to a desired value in a predetermined temperature range. Similar effects are obtainable by merely providing a support substrate on the substrate side of the optical waveguide element

Waveguide type optical device and manufacturing method thereof

To obtain an optical waveguide device suppressed in fluctuations of characteristics of optical waveguide element due to temperature changes. An arrayed waveguide grating as an optical waveguide device comprises a flat waveguide element of specified thickness hforming an optical waveguide layer on a silicon substrate, a first correction substrate of thickness h1 adhered to the optical waveguide layer side, and a second correction substrate of thickness hadhered to the silicon substrate side. By properly setting the coefficients of linear expansion &#x3b1;, &#x3b1;and Young's moduls E, Eof the two correction substrates, and using first and second adhesives of high rigidity, warp and expansion and contraction of the waveguide element due to temperature changes can be suppressed to minimum limit. Therefore, the optical waveguide device does not require temperature adjustment.

Optical waveguide device

In an arrayed waveguide grating, a wedge-shaped groove formed in an arrayed waveguide section or a silica-based waveguide section in a periphery of the groove is modified in either one of the procedures below or in a particular combination thereof to suppress spreading of light in the groove to thereby reduce the excess loss due to addition of the groove. The material filled in the groove is a photosensitive material having a negative refractive index temperature coefficient. Using the photosensitivity, refractive index difference is provided in the groove to form optical waveguides in a horizontal direction or in vertical and horizontal directions. The material filled in the groove has a negative refractive index temperature coefficient to minimize a spreading angle of light incident to the groove. Width of each silica-based waveguide is enlarged before and after the groove to decrease the spreading angle of light incident to the groove. This method reduces the excess loss of the arrayed waveguide grating in which a wavelength characteristic is kept unchanged with respect to a change in ambient temperature.

Temperature-independent arrayed waveguide grating device

An arrayed waveguide grating is shown, which comprises at least one input waveguide a plurality of output waveguides at least one wavelength compensation output waveguide disposed adjacent to the output waveguide a channel waveguide array an input side slab-waveguide and an output side slab-waveguide The wavelength compensation output waveguide has a tapering connecting portion connected to the output side slab-waveguide Thus, the outputted light has a sharp spectrum, thus permitting ready wavelength compensation.

Arrayed waveguide grating, arrayed waveguide grating module, arrayed waveguide grating module waveguide compensation method, optical communication system

An arrayed waveguide grating is shown, which comprises at least one input waveguide , a plurality of output waveguides , at least one wavelength compensation output waveguide disposed adjacent to the output waveguide , a channel waveguide array , an input side slab-waveguide , and an output side slab-waveguide . The wavelength compensation output waveguide has a tapering connecting portion connected to the output side slab-waveguide . Thus, the outputted light has a sharp spectrum, thus permitting ready wavelength compensation.

In an arrayed waveguide grating device, two or three components are joined to each other in joint face in any one of or both an input-side slab waveguide and an output-side slab waveguide. In this case, the joint faces are joined to each other in such a state that the joint faces have been relatively moved by a desined degree. By virtue of this construction, an arrayed waveguide grating device, a process for producing the same, and an arrayed waveguide module and an optical communication system using the arrayed waveguide grating device can be realized wherein the joint faces can be fixed to each other at an optimal position to facilitate wavelength correction and the third component for constituting the output-side slab waveguide can be properly selected and joined, for example, to realize increase the number of output-side channels or to provide a monitoring output terminal.

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Tokyo, Japan

Shigeru Yoneda