Abstract: The invention provides a technique of making color adjustment for a great number of colors among different imaging apparatus. In the process of making color adjustment among a plurality of cameras, a color correction processing unit disposed in a CCU of each camera detects data associated with lightness, hue, and saturation for a plurality of specified colors. The detected data is transmitted as color data to a CPU. According to the color data supplied from each CCU, the CPU divides the color space into a plurality of areas, and calculates setting data which is required by the color correction processing unit to correct the lightness, hue, and saturation. The resultant setting data is transmitted to the color correction processing unit. In actual use in a normal operation mode, the color correction processing unit corrects the lightness, hue, and saturation according to the procedure determined for each area in accordance with the setting data.

Abstract: The present invention intends to propose an image pickup apparatus in which a plurality of camera head units can be easily installed at places close to each other. This image pickup apparatus includes a television camera system 10, in which video result of an external device 12 can also be transmitted through a single cable 16 which connects a camera control unit 13 and a camera head unit 15.

Abstract: Video signal compression apparatus for analyzing an input video signal to determine the distribution of signal levels and compressing the input signal as a function of the distribution to produce an output video signal.

Abstract: An apparatus for setting up an electronic device has a memory for storing parameter setting image data for establishing one or more parameters with respect to a controlled device, the parameter setting image including parameter changing switch image data and setting state display image data, a display unit for displaying a parameter setting image based on the parameter setting image data read from the memory, an input unit for entering input information indicating changes in display states of a parameter changing switch image data and a setting state display image which are displayed by the display unit and a parameter to be established, and a controller for changing the display states of the parameter changing switch image data an the setting state display image which are displayed by the display unit and the parameter to be established, based on the input information entered by the input unit, and transmitting changed parameter data or a change in the parameter to the controlled device.

Abstract: (M-N) 0 data are inserted for every N data of the f.sub.SL input data by an interpolation circuit 20 for generating f.sub.SH rate data, while filter coefficients are sequentially generated by M coefficient generators 30A to 30D at the f.sub.SH rate. A register postfix type transversal filter 40 effectuates up rate conversion of N:M (N<M) of generating f.sub.SH rate output data from f.sub.SL rate input data. The transversal filter 40 includes M multipliers 41A to 41D for multiplying the f.sub.SH rate data generated by the interpolation circuit 20 with the filter coefficients sequentially applied by the coefficient generators 30A to 30D and each (M-1) delay circuits 42A to 42C and additive units 43A to 43C for delaying product outputs of the multipliers 41A to 41D by unit time delay and summing the delayed product output together.

Abstract: A data transmission apparatus and a camera system for multiplexing serial data into horizontal blanking portions of video data for transmission between a CHU (1) and a CCU (2). On the transmitting side, resampled data is obtained by sampling the serial data using a clock signal of a frequency higher than that of the transmission rate of the serial data. A predetermined number of resampled data items are selected as multiplexing data from the resampled data obtained in each of the horizontal periods of the video data. The multiplexing data is multiplexed into the horizontal blanking portions of the video data for transmission. On the transmitting side, the multiplexing data is separated from the received video data. The separated multiplexing data is decoded so as to extract successively definite data constituting the initial serial data.

Abstract: An imaging parameter recording apparatus and an imaging apparatus are disclosed. The setting states of various parts of an imaging system 1 at the time of imaging are detected by a system controller 9 and routed as imaging parameters to a recording/reproducing system 2. These imaging parameters are recorded along with the imaging data on a video tape 17. This enables not only the picture corresponding to the imaging data but also the imaging parameters at the imaging time to be reproduced at the reproducing time, so that not only the past setting state-can be recognized, but also the past setting state can be newly set so that the picture of the same picture pattern can be imaged.

Abstract: Digital processing apparatus for correcting an image enhancement signal having a shape includes a peak detector for detecting and holding peak levels of the image enhancement signal and an adjustment circuit, responsive to the peak levels, for correcting the image enhancement signal to reduce its peak levels while substantially maintaining its shape and to limit the signal levels of the image enhancement signal to a range of levels substantially between a first predetermined peak limit and a second predetermined peak limit.

Abstract: An imaging parameter recording apparatus and an imaging apparatus are disclosed. The setting states of various parts of an imaging system 1 at the time of imaging are detected by a system controller 9 and routed as imaging parameters to a recording/reproducing system 2. These imaging parameters are recorded along with the imaging data on a video tape 17. This enables not only the picture corresponding to the imaging data but also the imaging parameters at the imaging time to be reproduced at the reproducing time, so that not only the past setting state can be recognized, but also the past setting state can be newly set so that the picture of the same picture pattern can be imaged.

Abstract: (M-N) 0 data are inserted for every N data of the f.sub.SL input data by an interpolation circuit 20 for generating f.sub.SH rate data, while filter coefficients are sequentially generated by M coefficient generators 30A to 30D at the f.sub.SH rate. A register postfix type transversal filter 40 effectuates up rate conversion of N:M (N<M) of generating f.sub.SH rate output data from f.sub.SL rate input data. The transversal filter 40 includes M multipliers 41A to 41D for multiplying the f.sub.SH rate data generated by the interpolation circuit 20 with the filter coefficients sequentially applied by the coefficient generators 30A to 30D and each (M-1) delay circuits 42A to 42C and additive units 43A to 43C for delaying product outputs of the multipliers 41A to 41D by unit time delay and summing the delayed product output together.

Abstract: An imaging parameter recording apparatus and an imaging apparatus are disclosed. The setting states of various parts of an imaging system 1 at the time of imaging are detected by a system controller 9 and routed as imaging parameters to a recording/reproducing system 2. These imaging parameters are recorded along with the imaging data on a video tape 17. This enables not only the picture corresponding to the imaging data but also the imaging parameters at the imaging time to be reproduced at the reproducing time, so that not only the past setting state can be recognized, but also the past setting state can be newly set so that the picture of the same picture pattern can be imaged.

Abstract: A processing circuit converts a 16:9 aspect ratio video signal into a 4:3 video signal and includes a time division multiplexer that multiplexes the two video signals and a selector that selects one of the multiplexed signal for display. A mark is added to identify the range in which the 4:3 aspect ratio video signal is displayed relative to the 16:9 aspect ratio video signal.

Abstract: A solid state image pickup apparatus comprises a solid state imager having a plurality of pixels and which outputs a signal corresponding to light incident thereon, a sample and hold circuit for sampling and holding analog output signals from respective pixels of the solid state imager in response to a sampling signal, a low-pass filter connected to the analog output of the sample and hold circuit for eliminating a high frequency component therefrom so as to output a filtered signal, an analog-to-digital converter for converting the filtered signal to a digital filtered signal, a memory for storing position data indicative of a position of a defective pixel, a circuit for stopping the supply of the sampling signal to the sample and hold circuit in response to the position data indicating a defective pixel so that the output signal from the defective pixel is replaced with the analog output signal from a pixel read immediately prior thereto, an interpolating circuit connected to the analog-to-digital converter

Abstract: In a video camera having three image pickup devices in which a pixel of one channel of channels forming three primary colors is spatially displaced from other pixels of two channels by 1/2 pixel, when three primary color signals output from the three image pickup devices are converted into digital three primary color signals, an aperture signal is formed from the digital three primary color signals, the aperture signal output is added to the digital three primary color signals and a digital video signal of a predetermined format is formed from the added signal, a clock frequency of an aperture signal forming circuit is set to be twice the clock frequencies of the image pickup devices, an A/D converting circuit and a video signal forming circuit.

Abstract: An aperture correction circuit adds to the input video signal an aperture correction signal formed from the input video signal and which is subject to non-linear processing to thereby effect the aperture correction for a picture of low or high contrast.

Abstract: A digital limiter limits the amplitude of a digital video signal by replacing input data that lies outside the range defined by lower and upper limit levels. Such data are replaced respectively with (1) an average value of (a) the data preceding the first data lying outside the range and (b) the upper or lower limit level data and (2) an average value of (a) the data following the last data lying outside the range and (b) the upper or lower limit level data. This enables a good soft-limit operation without compromising the linearity of the video signal.

Abstract: An aperture correction circuit that adds an aperture correction signal formed from an input video signal to the input video signal, wherein the aperture correction signal is processed by a non-linear processing and then added to the input video signal to thereby effect the aperture correction for a picture of low or high contrast.

Abstract: A registration adjusting apparatus for a color television camera having a plurality of image pick-up tubes in which an effective image area is divided into segmented image areas and the registration adjustment is effected for every one of the segmented image areas, changes the registration control data sequentially at predetermined intervals and calculates the registration error in every segmented image area over the entire image area from the values of the centering control data produced at the time points when the registration errors of the respective segmented image areas are inverted in polarity, thereby to reduce the time necessary for performing registration adjustment. The registration error data is produced using a test chart of vertical and horizontal stripes over the segmented image area and by interpolation or extrapolation, the registration error data at the centers of the respective segmented image areas can be obtained.

Abstract: A video signal generating apparatus having a video camera which has a higher scanning speed than that of a standard video camera for generating a prior standard television video signal is disclosed which includes a circuit for dividing the video signal into a plurality of channel video signals, a circuit for expanding a time axis of the channel video signals, a circuit for combining the time axis expanded channel video signals for producing a plurality of composite video signals so that each of the composite video signals has a band width similar to that of the standard television video signal respectively and, a circuit for supplying a reference signal to the combining circuit so that each of the composite video signals has a color framing sequence same as that of the standard television video signal respectively.

Abstract: An automatic control circuit for a video camera includes an error detecting circuit for detecting and generating error data, a control signal generator supplied with the error data and generating a control signal, and a control circuit supplied with the control signal for controlling a controlled circuit for the video camera; wherein said control signal generator mixes reference correcting data generated from the error data with the control signal thereby to generate a new control signal, and the control signal generator includes a circuit for changing the polarity of the reference correcting data and decreasing the absolute value of the reference correcting data when the error data changes its polarity and a circuit for averaging the plural control signals each of which is generated when the reference correcting data is at its minimum value and the error data changes its polarity, the output of the averaging circuit being the control signal.