Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Akihiro Takeuchi

Masaaki Kobayashi

Atsuo Ochi

Yasuo Hamamoto

Kazuhiro Yamanishi

Masazumi Yamada

Yoshitomi Nagaoka

Tadashi Kunihira

Akira Iketani

Yoshihiro Morioka

Kenji Morimoto

Kenji Matsuura

Mutsuyuki Okayama

Chiyoko Matsumi

Masafumi Shimotashiro

Yoshifumi Yanagawa

Tsutomu Muraji

Kiyoji Fujisawa

Shinichi Aki

Kenichi Honjo

Makoto Gotou

Masahiro Honjo

Katsuo Saigo

Haruo Isaka

Haruo Ohta

Masahiro Kawashima

Takeshi Hamasaki

Akira Usui

Hiroshi Miyai

Masao Tomita

Hisashi Inoue

Yoshio Sakakibara

Masayuki Yoneyama

Takayuki Kimoto

Masanobu Inoe

Kei Ichikawa

Kiyokazu Hashimoto

Sukeichi Miki

Ryoji Asada

Makoto Goto

Yukio Kurano

Yukio Nakagawa

Akio Hashima

Kouichi Igata

Hisakazu Hitomi

Katsumi Gotoh

Masakazu Mimura

Tamotsu Akeyama

Sakon Nagasaki

Yuzo Murakami

Masahiro Motosugi

Michifumi Inai

Kenji Kunitake

Takashi Kurama

Katsufumi Kohno

Masa-aki Kobayashi

Noriaki Gentsu

Yoshitaka Sakamoto

A stereoscopic shooting device includes: a first shooting section that obtains a first image; a second shooting section that outputs a second image; an angle of view matching section that cuts image portions to have the same angle of view from the first and second images; a parallax information generating section that generates parallax information indicating parallax between the two image portions; a reliability information generating section that generates reliability information indicating the degree of reliability of the parallax information based on at least one of the first and second images and the parallax information; and an image generating section that generates, based on the parallax information and the first image, a third image that forms, with the first image, stereoscopic images. The parallax information generating section corrects the parallax information based on the reliability information.

Stereoscopic shooting device

A color conversion device generates color data in a second color gamut based on first converted color data and input color data, which are obtained from input color data in a first color gamut, and outputs the color data in the second color gamut. The color conversion device includes a first color mapping unit which generates the first converted color data by mapping the input color data into the second color gamut; a color mixing unit which generates color data by mixing the first converted color data and second converted color data at a ratio corresponding to the first color gamut and the second color gamut; and a color data output unit which outputs the color data.

Color conversion device, color conversion table and color conversion method

In a content shooting apparatus (Acc) for recording content data (Sav) containing video, audio, or data onto an information recording medium (), in combination with first metadata (Di, Dm) containing a parameter representing scene information (SI), and allowing access to a specific portion of the content (Sav) with reference to the scene information (SI), a camera microcomputer () detects movement of a camera () to generate the first metadata (Di, Dm) by comparing the detected movement with a predetermined value (Th), and also generates second meta data (Di, Dm) by filtering out the first metadata (Di, Dm) generated within a predetermined specific window period (W) via a predetermined function.

Content shooting apparatus for generating scene representation metadata

The present invention includes a film or video image pickup signal recording/reproduction system having an image pickup apparatus outputting an image pickup signal, a recording apparatus recording the image pickup signal, a reproduction apparatus reproducing the recorded signal, a characteristic conversion apparatus switching the characteristic of the reproduced signal, and a display apparatus displaying the signal output from the characteristic conversion apparatus. The image pickup apparatus has two kinds of gamma curve characteristics. The gamma curve characteristic data is recorded by the recording apparatus and extracted by the reproduction apparatus. The gamma curve characteristic of a reproduction image is switched by the characteristic conversion apparatus depending on the data. The image is output on a display apparatus.

Characteristic correction apparatus for gamma correcting an image based on the image type

At least three heads are mounted on a rotary drum. Between the first and third heads which are located in close proximity to each other and have different azimuth angles, a minute height difference is formed in the rotation shaft direction of the rotary drum. Signals of a plurality of data rates are recorded and reproduced by using the first and second heads or the first and third heads. Two heads having the same azimuth angle are disposed on the rotary drum so as to be opposed each other at a central angle of 180&deg;. In search speed reproduction, search data are reproduced by the two heads. Tracks are divided in the unit of plural tracks so as to form track sets. Search data areas of each track set are disposed at a position of each track which is separated from the edge of a tape by a predetermined distance. In search speed reproduction, the phases of the tracks and the heads are controlled, and all effective data of the search data areas are reproduced by plural scans of the heads.

System for recording and reproducing data having scheme for minimizing variation in record track width when recording at different data rates

A data recording/reproducing apparatus of the invention records data in a plurality of tracks on a tape like recording medium by using a head unit mounted on a rotational cylinder and reproduces recorded data from the tracks, the tracks having at least two azimuth angles different from one another, and the tracks of the different azimuth angles being alternately located on the recording medium, the apparatus including: a formatter for providing, to each of the tracks, a normal data region to be used in normal reproduction and at least one search data region to be used in reproduction at a standard variable reproduction speed; for grouping the plurality of tracks into track sets each having a predetermined number of tracks, each search data region being located in the same position on a corresponding track included in the track set, and for placing identical search data in the search data region of each track included in the track set.

Data recording/reproducing apparatus and method for high speed play

In a digital signal recording and reproducing apparatus, digital input data is transmitted in a transmission packet format and is recorded in a recording packet format. In a recording stage, an auxiliary signal generator (3) generates an auxiliary signal for special reproduction in the transmission packet format, and the digital and auxiliary signals are converted into respective recording packets by means of recording signal converters (5, 6). Recording means (9, 10) performs a specific recording process on the recording packets and an identification signal for identifying between the recording packets of the digital signal and of the auxiliary signal. While in a reproducing stage, reproduction signal processing means (14, 15) performs a specific reproduction process on the reproduction signal to thereby reconstruct the recording packets and the identification signal. A packet selector (16) detects the reconstructed identification signal to determine whether the recording packet is of the digital signal or of the auxiliary signal, and then the digital signal or auxiliary signal is reconstructed by a signal reconstructor (17) in the transmission format using the selected recording packet, whereby a high quality image output conforming to the transmission format used in the normal reproductions mode is also obtained during the special reproduction modes.

Digital signal recording and reproducing apparatus

A recording apparatus for recording digital signals to plural tracks formed sequentially on a tape using plural heads includes a first selector for selecting the first through n track sets, continuous tracks within the plural tracks formed on the tape. A disposer disposes the first through k separated high speed reproduction data areas to the same positions in each of the m tracks comprising the first through n track sets. A first recording unit records the same high speed reproduction data to the same track position in at least the tracks having the same azimuth within the m*k high speed reproduction data areas belonging to the same track set. A second selector selects the n+1 through n+N, each track set comprising M tracks selected from among the tracks to which the high speed reproduction data areas are not disposed. A second disposer disposes a continuous very-high speed reproduction data area to the same position in each of the M tracks forming the n+1 through n+N track sets. A second recorder record the same very-high speed reproduction data to the M very-high speed reproduction data areas belonging to the same track set within the M*N very-high speed reproduction data areas belonging to the n+1 to n+N track sets.

Recording and reproducing apparatus

Recording apparatus for recording video signal on a tape by helical scan heads has a special frame data detector for detecting a special frame data that can be processed during a reproducing operation, without any additional data, to reproduce an image, a memory for storing the special frame data, and inserting arrangement for inserting a selected track after a predetermined number of tracks. One selected track is written with a portion of the special frame data repeatedly, and another selected track is written with another portion of the special frame data repeatedly, and so on. During the high speed reproducing mode, various portions of the special frame data as obtained from a number of selected tracks are gathered to form an image.

Recording and reproducing apparatus using basic data

A recording and reproducing apparatus for an input encoded data stream having two different bit rates N.sub.1 and N.sub.2, where N.sub.1 &lt;N.sub.2. The recording and reproducing apparatus includes: an input interface for outputting the input encoded data stream to two channels; recording processors, connected to the outputs of the input interface, for converting the input encoded data stream into a signal suitable for writing onto a magnetic tape by a recording head; a tape speed controller for varying the speed of the magnetic tape in accordance with the bit rates of the input encoded data stream; a reproducing head for reading the signal from the magnetic tape; reproducing processors for processing a reproduced signal; and an output interface. The input interface divides and outputs the input encoded data stream to both of the two channels when the bit rate of the input encoded data stream is N.sub.2, while the input interface outputs the input encoded data stream to only one of the two channels when the bit rate of the input encoded data stream is N.sub.1. The output interface integrates and outputs the input signals from the two channels when the bit rate of the reproduced encoded data stream is N.sub.2, while the output interface outputs the input signal from only one of the two channels when the bit rate of the reproduced encoded data stream is N.sub.1.

Encoded data stream recording and reproducing apparatus with tape speed,

An apparatus for recording a video signal onto tracks of a recording tape includes circuitry for producing a first time-base reference signal which is a color burst signal composed of a first predetermined number of sinewave cycles and a second time-base reference signal which is a burst signal composed of a second predetermined number of sinewave signals. The second predetermined number of cycles is larger than the first predetermined number of cycles. The apparatus further includes superimposing circuitry for superimposing the first time base reference signal on an input video signal at intervals of a horizontal scanning period of the video signal and for superimposing the second time base reference signal on the input video signal at intervals of a predetermined number of horizontal scanning periods of the video signal. The apparatus further includes a modulator for modulating an output signal of the superimposing circuitry to obtain a modulated signal and a recording arrangement for recording the modulated signal onto the tracks of the recording tape.

Video tape recorder for recording a video signal with an additional

A signal processing apparatus for changing the frequency characteristics of an input signal, e.g.--a video or audio signal, allows a signal to pass through a transmission circuit in a positive time sequence and then, allows the signal to be transmitted through another transmission circuit having the same transmission characteristics in a reverse time sequence with respect to the positive time sequence. Also, while the transmission circuit is arranged to have a zero-phase characteristic, each segment of a continuous signal is processed throughout a period which is equal to at least two times a duration of an impulse response direction of the transmission circuit. Accordingly, unwanted wave errors appearing at discontinuous regions of the signals are eliminated.

Signal processing apparatus for changing the frequency characteristics

A tracking error detecting circuit in which tracking error detecting pilot signals having different frequencies are added to a main signal every track and recorded onto a magnetic recording medium, and upon reproduction, reproduction output levels of the pilot signals reproduced as crosstalks from both of adjacent tracks are compared, and a tracking error is detected. n signals having the same frequencies as those of the pilot signals and whose phases are different are generated and multiplied to the reproduction signal. Unnecessary components are eliminated by n LPFs (Lowpass filters). The amplitude values of the reproduced pilot signals are vector separated and detected. Further, the vector separated amplitude values are vector synthesized and detected. Therefore, by multiplying the signals having the same frequencies as those of the pilot signals, the synchronous detection is performed. The influence due to the undetected pilot phases is solved by detecting by performing the vector separation and synthesis. Therefore, the amplitude values can be certainly detected by the synchronous detection. The signal to noise ratio of the reproduction pilot signals can be determined by the LPFs (lowpass filters). Even in the case of a bad transmission signal to noise ratio of the reproduction pilot signals which could not be coped by the conventional construction, the amplitude values can be certainly detected.

Tracking error detection circuit of magnetic recording and reproduction

Two-channel signals contain information of a video signal in a video system where one frame is composed of an odd number of lines. A first switching device periodically and mutually switches the two-channel signals at periods of nH and thereby generates two converted signals which correspond periodically and alternately to the two-channel signals at periods of nH. The character 'nH' denotes a vlaue which equals a preset integer 'n' times a horizontal sync period 'H'. The first switching device is reset for each of a plurality of fields. The two converted signals are transmitted through a transmission system. A second switching device periodically and mutually switches the two converted signals, which are transmitted through the transmission system, at periods of nH and thereby reobtains two-channel signals from the two converted signals. The second switching device is reset for each of the fields.

Video signal transmission apparatus for frames with an odd number of

An apparatus for converting a wide screen television signal to a desired normal screen television signal includes an extraction circuit for selectively extracting a portion of the wide screen television signal corresponding to a normal screen television picture to obtain the desired normal television signal, a motion detector for detecting a motion of a picture produced by the wide screen television signal, and a control circuit for controlling the extracting circuit to extract the portion of the wide screen television signal according to a motion detection result of the motion detector. A plurality of candidate areas to be extracted from the wide screen television picture are predetermined. The motion detector detects from among the plurality areas an area in which the motion of the picture is the largest. The control circuit controls the extracting circuit to extract a portion of the wide screen television signal corresponding to the area in which the motion of the picture is the largest.

Apparatus utilizing motion detector for converting a maximum motion

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Ikoma, Japan

Akihiro Takeuchi