Matsushita Electric Industrial Co., Ltd.

Yoshinori Kitamura

Atsushi Morimura

Tatsuro Juri

Masazumi Yamada

Chiyoko Matsumi

Akira Iketani

Masaaki Nakayama

Chojuro Yamamitsu

Ichiro Arimura

Yukio Kurano

Hiroki Matsuoka

Shoji Nishikawa

Ryuhei Nakabe

Kenya Uomori

Takeshi Hamasaki

Makoto Fujimoto

Akihiro Tamura

Atsushi Fujioka

Masami Onishi

Yasumi Miyakawa

Tooru Yasuda

Hideo Toyoda

A plurality of digital signals having total data rates of n bit/s or less are input to a digital recording device recording digital signals having a data rate of n bit/s. The digital signals are subjected to format-conversion for the digital recording device to be recorded therein. Furthermore, signals having a data rate of n/i bit/s or less are subjected to format-conversion to be recorded i times in the digital recording device. In the case where the data rate of the digital signals to be input is n/j bit/s, the digital signals are subjected to format-conversion so that the amount of data capable of being recorded per unit time is decreased by i/j; thus, the digital signals are recorded for a long period of time under the condition that the data recording time is prolonged j times. Furthermore, when input data to be recorded on a magnetic tape at a normal data rate by using a magnetic head mounted on a rotary cylinder is recorded, the recording device of the present invention makes it possible to select a plurality of types of track angles generated by the rotation number of the cylinder, the tape traveling speed, and the like.

Apparatus using a method for recording digital data including a data conversion or format conversion, and apparatus using the method

A plurality of digital signals having total data rates of n bit/s or less are input to a digital recording device recording digital signals having a data rate of n bit/s. The digital signals are subjected to format-conversion for the digital recording device to be recorded therein. Furthermore, signals having a data rate of n/i.sub.1 bit/s or less are subjected to format-conversion to be recorded i.sub.1 times in the digital recording device. In the case where the data rate of the digital signals to be input is n/j bit/s, the digital signals are subjected to format-conversion so that the amount of data capable of being recorded per unit time is decreased by i/j; thus, the digital signals are recorded for a long period of time under the condition that the data recording time is prolonged j times. Furthermore, when input data to be recorded on a magnetic tape at a normal data rate by using a magnetic head mounted on a rotary cylinder is recorded, the recording device of the present invention makes it possible to select a plurality of types of track angles generated by the rotation number of the cylinder, the tape traveling speed, and the like.

Method for recording digital data including a data conversion or format

Digital data recording device having a rotary cylinder

An image pickup apparatus includes an image sensor for simultaneously reading signals of adjoining two horizontal pixel rows by one-time horizontal scan; an electronic zoom circuit for enlargement-processing an output signal of the image sensor; an operation switch for instructing for on/off control of electronic zoom operation; and a scan method switching circuit for controlling scan method of the image sensor according to with an instruction from the operation switch. The scan method switching circuit exerts control so that, when the electronic zoom operation is turned on, a pair of two horizontal pixel rows to be read simultaneously in the odd and even fields are made identical, and when the electronic zoom operation is turned off, a pair of two horizontal pixel rows to be read simultaneously in the odd and even fields are shifted by one row in the vertical direction. In this image pickup apparatus, the positions of lines having high vertical frequency responses and those of lines having low vertical frequency responses are approximately reversed between the odd and even fields, so that the vertical frequency response is made uniform over the entire screen as a one-frame image.

Horizontal line interpolation circuit and image pickup apparatus

In the present invention, a drive circuit 12 drives a solid-state image-pickup element 11 in synchronism with a synchronizing signal generated by a synchronizing signal generation circuit 13, and the solid-state image-pickup element 11 issues an output signal prior to an end time of a horizontal blanking period by a time period T.sub.A. This output signal is processed in a digital signal processing circuit 14 and is issued as a picture signal. At that time, the picture signal is delayed from the synchronizing signal by a time period (T.sub.B -T.sub.A) owing to the signal processing, whereas the synchronizing signal is delayed by a delay circuit 15, in which a delay time made by subtracting a time period T.sub.A from a delay time T.sub.B of the digital signal processing circuit 14 is given, and can be issued in a proper timing for a picture signal output of the digital signal processing circuit 14. Further, by incorporating the delay circuit 15 in an LSI which constitutes the digital signal processing circuit 14, a circuit-construction can be minimized and a disturbance, which is given to the picture signal by the synchronizing signal, can be remarkably eliminated.

Digital-signal-processing camera

Noise reduction apparatus for reducing noise in an input video signal

A color image pickup apparatus for correcting the sharpness of the luminance signal in a color image pickup system for taking out as different color signals for each of the horizontal lines the color information from the objects to be photographed with the use of a color image sensor having a color filter arrangement, whereby it is capable of correcting it even when the signals are saturated in the image sensor and the signal level between the adjacent two horizontal lines has been different in spite of the photographing the object which is the same in the signal level between two adjacent horizontal lines.

Color image pickup apparatus

Synchronized three dimensional imaging apparatus

In an image pick up apparatus having an image pick up device (1), an amplifier (2), a vertical contour compensation circuit (500), a gamma correction circuit (8), a horizontal contour compensation circuit (9), a color operation circuit (200), and an encoder (10), pixel compensation circuits (100, 100') are provided for reducing modulation components are caused by a color filter during saturation in an image pick up device (1). Horizontal low-pass circuits (7a, 7b) combined with clippers (24a, 24b) are provided in the vertical contour compensation circuit (500) to reduce a modulation components caused by such compensation in the pixel compensation circuits (100, 100').

Image pick up apparatus having pixel compensation circuit

A light signal control circuit for an image pick-up apparatus detects a substantially peak value of image pick-up signals by a first level detection circuit, detects a substantially average value of the image pick-up signals by a second level detection circuit, determine a brightness condition of an object by a decision circuit, weights the outputs of the first level detection circuit and the second level detection circuit by a weighting circuit, and controls the amount of light reaching an image pick-up apparatus in accordance with an output of the weighting circuit. Optimum light control corresponding to the brightness condition of the object is attained by controlling the weighting operation in accordance with an output of the decision circuit.

System for controlling the amount of light reaching an image pick-up

Pixel defect correction apparatus

In a color imaging apparatus having a single chip solid state state sensor and an n color filter matrix, n color signals are used by an operation circuit in a first signal processing mode to generate chrominance signals and a luminance signal. When one of the n color signals reaches a saturation level, the operation circuit utilizes the remaining n-1 color signals. When a second color signal reaches the saturation level, a compensation signal is generated from a particular non-saturated color signal and the operation circuit utilizes the remaining n-2 non-saturated signals, including the particular non-saturated signal, and the compensation signal to produce the chrominance signals and the luminance signal. Compensation signals are generated from the particular signal until the particular color signal saturates. The particular color signal saturates last.

Solid state color imaging apparatus producing chrominance and luminance

The present invention relates to an automatic focussing apparatus for a television camera using video signal and comprises a variable optical path means, for example, an optical glass and a piezo-electric device disposed in an optical pass, and the automatic focussing apparatus varies minutely an optical path length responding to given frequency and controlls lens position using a given frequency component which is derived from a high frequency component in said video signal in a manner that said high frequency component becomes maximum.

Automatic focussing apparatus

An apparatus and method for suppressing color error components generated in a color television camera of the type in which color component signals representing first and second colors of a color image are recovered by utilizing a difference of phase relationship of modulated color signals, one of which changes in successive horizontal scan lines. In this apparatus and method, a color correction signal which indicates positions of color errors and provides preferred color error correction is produced from an unmodulated component of an output from a pick up tube by operating upon such component. The wave shape of at least one of a luminance signal which is derived from the unmodulated component of the output from the pick up tube and used to generate color signals and the color component signals recovered by operating upon a modulated component of the output is adjusted, preferably in accordance with the color correction signal, so that the color error components which are generated when the color component signals are recovered and which are included in the color component signals are suppressed at least in the color signals which are produced from the luminance signal and the color component signals during generation of a color video signal.

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Takatsuki, Japan

Yoshinori Kitamura