摘要:
In a solid state color imaging apparatus comprising photo sensitive element arrays arranged horizontally and vertically, means for reading out parallel photo signals of the photo sensitive element arrays on two horizontal lines and delivering the read out photo signals to first and second output circuits, and a mosaic color filter disposed in front of the photo sensitive elements and having luminance filtering counterparts arranged horizontally and vertically one after the other and two types of color filtering counterparts arranged at the remaining positions and on alternate horizontal lines, the horizontal clock from the reading out means has a frequency of 7.16 MHz so that color difference signals having the chrominance subcarrier component of 3.58 MHz are directly obtained in the first and second output circuits.
摘要:
A solid-state color imaging device including a plurality of photosensors which are arrayed in the horizontal and vertical directions, and a mosaic color filter which is made up of filter elements arranged in correspondence with the respective photosensors. Any four adjacent filter elements of the mosaic color filter have different characteristics from one another with the first and second filter elements of the four adjacent filter elements being selected from the group consisting of first, second and third spectral region transmitting filters having different transmission characteristics, and the third and fourth filter elements of the four adjacent filter elements being complementary color filters of the respective first and second filter elements selected and being arranged adjacent the first and second filter elements, respectively, in the vertical direction.
摘要:
The present invention relates to a color imaging device which suppresses false color signals appearing in an area where the difference of brightnesses is great in the horizontal or vertical direction.When the correlation between picture elements adjacent in the vertical direction is little and the false signal appears in a boundary part in the vertical direction, the false signal is detected, whereupon a color signal is demodulated by utilizing the correlation between the signals of picture elements in the horizontal direction. On the other hand, when the correlation between picture elements adjacent in the horizontal direction is little and the false signal appears in a boundary part in the horizontal direction, the false signal is detected, whereupon a color signal is demodulated by utilizing the correlation between the signals of picture elements in the vertical direction.As a result, the moire phenomenon attributed to the false color signals can be conspicuously reduced.While embodiments of the present invention refer to color imaging devices which employ MOS type solid-state imaging devices, the invention is also applicable to an imaging device which employs CCDs and a color image pickup tube which separates colors by means of a mosaic color filter.
摘要:
This invention relates to a solid-state imaging apparatus wherein photo signals are read out through MOS type FETs from photosensors such as photodiodes arrayed in two dimensions in large numbers, and consists in remarkably enhancing the signal-to-noise ratio of an output signal by reducing or eliminating noise components to mix into the photo signals.The analysis of the noise components has revealed the correlation in which the noise component in a certain polarity develops in the opposite polarity again after a period that is shorter than one horizontal scanning period by the duration of one horizontal scanning pulse. With note taken of the correlation, a solid-state imaging apparatus comprising a processing circuit which includes a delay circuit and an adder circuit and which cancels the noise is provided.
摘要:
A solid-state color imaging device is provided including a plurality of photosensors which are arrayed in horizontal and vertical directions, and a mosaic color filter made up of filter elements arranged in correspondence with the respective photosensors. The mosaic color filter is arranged such that any group of four adjacent filter elements comprises a first filter which is made for panchromatic transmission, a second filter which is selected from among a first spectral region-transmitting filter, a second spectral region-transmitting filter and a third spectral region-transmitting filter respectively exhibiting different transmission characteristics, and third and fourth filters which are made of complementary color filters which transmit the transmission light component of the second filter and which have transmission components different from each other. The solid-state color imaging device also has means for simultaneously reading out optical signals of two of the photosensors adjacent in the vertical direction, and means for adding the two output signals.
摘要:
A color imaging apparatus having a plurality of image pickup tubes which pick up respective optical images of primary colors separated from one optical image includes a registration control circuit which operates to hold a picture of high quality at all times by controlling the registration of the images of the respective image pickup tubes on a real time basis during the operation of the camera. To this end a circuit detects those local image signals which satisfy predetermined requisites which are most favorable for use as reference signals to control the registration and these detected image signals are temporarily stored so as to be used for the registration operation. The most favorable requisites of the local image areas selected for registration control are (1) those having no movement, (2) those having a contour which is sharp and (3) those having a chroma which is low.
摘要:
A solid-state imaging apparatus comprising first means for sample-holding spike noise generated from a horizontal switching element constituting the apparatus second means for sample-holding spike noise opposite in phase to the first-mentioned spike noise, and third means for adding outputs of the first and second means.
摘要:
A pulse generator circuit for a solid-state television camera comprising a first circuit arrangement including a shift register of endless type for obtaining pulses of a horizontal scanning frequency for television, a second circuit arrangement for obtaining necessary pulse trains of the horizontal scanning frequency for a television camera from a plurality of output pulses of the shift register and a third circuit arrangement for dividing the pulse obtained by the second circuit arrangement by two-different factors of mode, n and n+1, and delaying the 1/n frequency-divided mode pulse by 1/2 horizontal scanning period in response to the output pulse from the second circuit arrangement thereby obtaining a frame pulse capable of interlaced scanning.
摘要:
In medical image treating systems, especially when an X-ray image intensifier and TV camera are used, video signals composed of available video signals containing specified image information and unavailable video signals containing no such image information are output from the TV camera. Only the digital video signals of the converted digital video signals corresponding to the available video signals are treated and the digital video signals after treatment are recorded and reproduced with a recording device.
摘要:
Embodiments of the invention a signal processing method capable of realizing low decoding error ratio by using a simple configuration free from unnecessary redundant bits. In one embodiment, user data (512 bytes+additional data) input to an input terminal is RLL-encoded by a RLL encoder 1. The data from the RLL encoder—1 is entered into a symbol error correction encoder where 9-bit symbol encoding is done. Its RS code portion is RLL-encoded by a RLL encoder—2. Signal read from a magnetic disk is entered into a RLL decoder—2 where the RS code portion is RLL-decoded. The signal from the RLL decoder—2 is then entered into a symbol error correction decoder where random read/write errors, burst errors attributable to defects and other errors are corrected to produce a (user data+RLL) signal. This data is output to an output terminal after being decoded by a RLL decoder—1.