Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Haruo Isaka

Makoto Gotou

Yoshio Sakakibara

Kenichi Honjo

Kei Ichikawa

Akihiko Nakamura

Hideaki Mukae

Shinichi Tanaka

Koji Shibuno

Masafumi Shimotashiro

Mitsuyoshi Okamoto

Haruo Ohta

Kenji Matsuura

Naotake Kitahira

Kenji Kawazoe

Kiyokazu Hashimoto

Satoshi Ohyama

Kazuhiko Kobayashi

Akihiro Ishikawa

Toshiyuki Kohri

Toshihiko Maruoka

Jun Takeuchi

Toshiyuki Kori

Kouhei Baba

Hiroshi Yasuda

Yuji Tanaka

Akira Iketani

Yoshihiro Morioka

Masaru Higashionji

Akihiro Takeuchi

Yasunori Kawakami

Shigeki Murata

Toshiki Itoi

Hiroshi Yohda

Mikio Sakurai

Makoto Goto

Yasushi Sogabe

Masafumi Nishida

Yasuhiro Nakagai

Yoshikazu Kato

Koji Sakurai

Kouhei Suzuki

Kazunori Umee

A system of the present disclosure comprises a shooting system and a playback system. The shooting system includes first and second shooting sections and a disparity calculating section that generates a differential image representing a difference between first and second images that have been shot by the first and second shooting sections, respectively. The playback system includes an image generating section that generates, based on the differential image and the first image, a third image that has as high a resolution as the first image and that forms, along with the first image, a 3D image. The image generating section generates, based on the first image and the differential image, a depth map representing the amount of parallax between the first and second images, and generates the third image based on the first image and the depth map.

Image capture device, player, system, and image processing method

An imaging apparatus includes an optical system configured to collect subject light, an imaging device having an electronic front curtain function, configured to receive the subject light to generate an image signal, a data storage unit configured to store an exit pupil distance of the optical system and a correction amount of the exit pupil distance, a mechanical shutter capable of cutting off the subject light passing through the optical system to the imaging device, and a correction unit configured to obtain the exit pupil distance of the optical system and the correction amount of the exit pupil distance from the data storage unit, obtain a corrected exit pupil distance using the obtained exit pupil distance of the optical system and a correction amount of the exit pupil distance, and correct brightness unevenness of the image signal based on the corrected exit pupil distance.

Imaging apparatus, camera body and interchangeable lens

An interchangeable lens includes a focus lens for changing a focus state of an object image, a driving unit for driving the focus lens, a lens controller for controlling the driving unit so as to move the focus lens forward and backward along the optical axis at a predetermined drive frequency, and a storage unit for storing therein drive frequency information representing a drive frequency at which the driving unit can control. A camera body obtains the drive frequency information from the interchangeable lens and performs control while referring to the drive frequency information.

Interchangeable lens and camera system

Interchangeable lens, camera body, and camera system

An image switching device for connecting to a plurality of image output devices via a digital interface having the capability of selecting image outputs sequentially of the image outputting devices. Cameras (to) are connected to a camera switching device () via an IEEE 1394 standard-based digital interface (). Synchronizing timing signals transmitted in isochronous communication packets from the camera switching device () are synchronized with image signals on the camera (to) sides, each camera (to) transmits its image signals in synchronous communication packets based on image switching control data transmitted in asynchronous communication packets or isochronous communication packets from a camera switching control unit (), and the camera switching device () selectively receives image data transmitted from a desired camera based on image switching control data.

Image switching device and image outputting devices

A sync signal time difference detection circuit detects a time difference of reproduced sync signals reproduced by a first head and a second head having different azimuth angles. Rotation of a capstan motor is controlled in accordance with sync signal time difference information output from the sync signal time difference detection circuit, thereby performing a highly accurate tracking control not affected by jitter or eccentricity.

Magnetic recording/reproducing apparatus

A magnetic recording/reproducing apparatus is provided in which among diametrically oppositely disposed heads, a recording head and an erasing head of a same channel are disposed adjacently to each other. The recording head is disposed so as to precede by two tracks the erasing head with respect to a direction of cylinder rotation, when insert-editing, using a reproduced signal obtained by the recording head, erase and record timing setting and head tracking are performed and an erasing current is not applied during the reproduction by the recording head. The reproducing heads are disposed so as to be angularly apart by about 90 degrees from the recording and erasing heads, and a rotary transformer for reproduction is applied with a shield measure and then, formed as a core independently at an upper portion of the cylinder. In addition, more narrow tracks are compatibly reproduced by the recording head.

Magnetic recording/reproducing apparatus with the recording/reproducing heads preceding the erasing heads

A clogging detector used for a VTR to check the recording state of a recording head without using the reproducing head. A test signal of a lower frequency than the erasing frequency is recorded before and after an information signal by means of an erasing head. Before and after recording the information signal by means of the recording head, the test signal is reproduced, the reproduction output is detected by a detecting circuit, and the level of the output is compared with a preset level by a comparing circuit. When the level is lower than the preset level, a warming is issued from a warming circuit, thus preventing a recording failure due to the clogging of the head.

Recording head clogging detection method and its device

A magnetic recording and reproducing device according to the present invention operates with steps of moving a magnetic tape having a plurality of tracks per frame and a plurality of control signals recorded thereon, keeping count of the pulses of a frequency generator signal corresponding to the rotation of a capstan motor by a frequency generator counter, resetting the count of the frequency generator pulses by the control signal reproduced by a fixed magnetic head, detecting the track number by the control signal counter reset by a frame reference signal, controlling, at the start, the start timing on the basis of the tape stop position detected by the frequency generator pulse counter and control counter and the reference frame signal from the reference frame signal generator. The device prevents thinning of tracks at the editing point in after-break recording and the disturbance of images immediately after the start. The device does not require a special circuit or complicated software-wise processing, and provides a stabilized slow-reproduced image. Further, in a magnetic recording and reproducing device for intermittent recording, there is no danger of causing thinning to recorded tracks. Thus, a reproduced image of high quality can be obtained.

Control system of tape travel for a magnetic recording and reproducing apparatus

The present invention is a video signal recording and reproducing apparatus for recording and reproducing video signals (SvN) inputted from a plurality (n) of different cameras (CMn). A frame switcher (,) sequentially selects one of the video signals (SvN) in prescribed order, and identifying signal adders (,) add an identifying signal (Sid) representing a corresponding camera number (N) to the selected video signal (SvN) and generate recording signals (Sr,, Sr,). A recording signal processor (,) modulates the recording signals (Sr,, Sr,) and recording magnetic heads (,) record them on a magnetic tape (,). Reproducing heads (,) reproduce a recorded recording signal (Sr&prime;) from the magnetic tape (,) and a reproducing processor (,) demodulates the signal. A camera number detector (,) detects the identifying signal (Sid) from a demodulated video signal (Sr,&prime;). Memory (,) stores the demodulated video signal (Sr,&prime;) in relation to the detected identifying signal (Sid), thereby allowing high-speed and normal-speed replay of video from a desired video signal source without video signals from a plurality of video signal sources mixed into.

Video signal recording and reproducing apparatus

Magnetic recording/reproducing apparatus with the recording/reproducing

A method and apparatus for recording control pulses on a control track are provided. The control pulses correspond to a number M (where M is an integer equal to or larger than four) of azimuthal tracks on the tape on which the number M of segmented data, obtained by dividing image data corresponding to one frame into the number M of segments, are recorded. One period of the control pulses corresponds to a number N (where N is a divisor of M) of azimuthal tracks, and a duty ratio pattern of the control pulses in a number L (L=M/N) of successive periods corresponding to one frame is different in each of a number K (where K is an integer equal to or larger than two) of successive frames.

Recording method and apparatus for control track

A magnetic recording and reproducing apparatus includes: a recorder for recording information signals so as to form tracks obliquely on a magnetic tape, and for recording pilot signals so that the frequency may differ between different modes such as SP and LP; a reproducing head for reproducing recorded information; an error detecting circuit for comparing the level difference of pilot signals recorded in both tracks adjacent to the track to be scanned by there producing head and for outputting a tracking error signal; and a controller for controlling the feed of the magnetic tape so that the tracking error signal may be balanced. Preferably, in the LP mode, a pilot signal of a higher frequency than that used in the SP mode is recorded. In a tracking error detector for a magnetic recording and reproducing apparatus for detecting the pilot signal, the reproduced signals are sampled at a frequency at a common multiple of each pilot frequency, a pilot signal is detected, and a tracking error signal is output.

Tracking error detector with comparison of amplitude detected pilot

A tracking error detecting circuit is used in a magnetic reproducing apparatus for reproducing an information signal from tracks which are formed on a magnetic tape obliquely in a longitudinal direction of the magnetic tape. The tracks have selectively recorded thereon a pilot signal multiplexed with the information signal. The tracking error detecting circuit comprises: a rotating magnetic head scanning the tracks for reproducing the information signal on which the pilot signal is selectively multiplexed to obtain a reproduced signal; a comparator for comparing a level of the reproduced signal with a specified level and for issuing a binary signal representing a comparison result; and a level detecting circuit for detecting a level of the pilot signal contained in the reproduced signal from an output of the comparator.

Tracking error detecting circuit

A reproducing apparatus reproduces information signals recorded multi-segmentally on oblique tracks on a tape. Track ID information recorded in the tracks is detected and compared with a reference frame to obtain a phase difference. The tape transportation is controlled in response to this phase difference to correct a reproduced phase so that it is made to coincide with a reference frame phase, as well as to perform tracking control using a tracking pilot signal recorded on the oblique track together with the information signal.

Reproducing apparatus that performs tracking control and phase control

Growing community of inventors

Yawata, Japan

Haruo Isaka