摘要:
The present invention relates to a display apparatus, a marker signal making process, a marker signal detector circuit, and a control signal generator circuit that are suitable for use when making a display in which a display screen is divided into a plurality of areas and images whose picture qualities are different at every area are displayed. Thus, in the present invention, image signals (R/G/B) from input terminals 1R, 1G, 1B are supplied to a preamplifier IC 3, e.g. to respective sharpness improving circuits 32R, 32G, 32B therein. Image signals derived from the preamplifier IC 3 are subjected to DC voltage conversion by a cutoff adjusting amplifier 6 and then supplied, e.g. to a cathode ray tube 7 as a display means. A microcomputer 40 which is present within this apparatus and controls various kinds of functions forms first and second DC voltage data for controlling, e.g. the sharpness. These data are made into analog control DC voltage by D/A converters 34A, 34B and then selected by a switching circuit 36 to be supplied to the preamplifier IC 3. This switching circuit 36 is controlled by an arbitrary control signal. This enables the picture quality of image of photograph, moving video, etc. to be improved without making the information on characters, numerics, etc. hard to see, when displaying the image of photograph, moving video, etc. together with the information on characters, numerics etc.
摘要:
A display apparatus in which a marker signal created by combining primary color signals of predetermined levels in an arbitrary pattern and designating a specified area of a screen is detected, the screen is divided into a plurality of areas and a display formed of an image different in picture quality is present at each one of the plurality of areas, a control signal for suppressing the luminance of the marker signal is generated, to thereby make the marker signal inconspicuous.
摘要:
A aperture compensation circuit which provides improvement in picture quality when a multi-media image is displayed and an RGB monitor employing the same includes a sharpness circuit provided between input terminals and a preamplifier. A lowest value detection circuit of the sharpness circuit detects a lowest value signal from among R, G and B signals supplied from the input terminals, and a differentiation circuit differentiates the lowest value signal to produce a differentiation signal. A slice circuit slices a component of the differentiation signal which corresponds to a portion at which a change from black to white occurs with an arbitrary amplitude to produce a second differentiation signal. The second differentiation signal from the slice circuit and the R, G and B signals supplied from the input terminals are added by addition circuits to effect contour correction of the R, B and G signals. A CRT is driven by the R, G and B signals for which contour correction has been performed.
摘要:
An ink cartridge device includes an ink cartridge and a cartridge casing. The ink cartridge has a first surface formed with an ink delivery port, a second surface formed with an air inlet port, a delivery port-sealing film for sealing the ink delivery port, and an air inlet port-sealing film for sealing the air inlet port. The cartridge casing has a casing body and a lid for closing the casing body. The cartridge casing accommodates the ink cartridge. At least one of the delivery port-sealing film and the air inlet port-sealing film comprises an unsealing operation portion for opening the at least one of the delivery port-sealing film and the air inlet port-sealing film, the unsealing operation portion being fixedly attached to an inner surface of the cartridge casing.
摘要:
The present invention provides a contrast control circuit capable of controlling the contrast even if the back porch is comparatively short. The contrast control circuit comprises monostable multivibrators (24, 26) which provides a background pulse and a reference pulse alternately, respectively, a switch (SW1) which clamps a video signal while the background pulse is HIGH so that the potential of the pedestal level is zero on an (N+1)th horizontal scanning line, and a switch (SW2) samples the leading edge of a reference pulse inserted in the video signal while the reference pulse is HIGH on an nth horizontal scanning line.
摘要:
There is provided an ink cartridge device which permits a delivery port-sealing film thereof to be positively peeled off and prevents ink from scattering out of the device during an operation for peeling off the delivery port-sealing film. An ink cartridge has an ink delivery port for supplying ink to the printer therefrom, and a rim of the ink delivery port. A container box contains the ink cartridge and has a box body and a lid for closing the box body. The box body is formed with a slit. A delivery port-sealing film has a sealing portion removably welded to the rim of the ink delivery port, for sealing the ink delivery port, and an unsealing operation portion continuous with the sealing portion and extending in a direction of making a U-turn with respect to the sealing portion to extend out of the container box through the slit of the box body.
摘要:
There is provided an ink cartridge which prevents ink from spilling out when the ink cartridge is mounted in a printer. An ink supply block of the ink cartridge is formed with a delivery port opening in a bottom of the ink supply block and a supply passage extending inward from the delivery port. A filter is provided at an upstream end of the supply passage. A lid member, which has a complementary shape to the supply passage, is removably mounted in the supply passage from the delivery port.
摘要:
A color correction circuit is disclosed, which includes three video signal lines for supplying red, green and blue signals, respectively, a first circuit for detecting a white color component, a circuit for applying the red, green and blue signals to the first detecting circuit, a second circuit for detecting a predetermined color component, a circuit for applying at least two signals of the red, green and blue signals to the second detecting circuit, a circuit for producing a difference signal between output signals of the first and second detecting circuits and a circuit for controlling at least one of the red, green and blue signals according to the difference signal.
摘要:
A projection lens (46) comprises: a cylindrical exterior case (621) having a lens-shifting through-hole (625) on a side thereof and an inner circumferential step or inner flange (623); a lens (610) of which outer periphery (611) on a first side is abutted to the inner circumferential step or inner flange (623); a flexible or elastic spacer (660) abutted to an outer periphery (612) of a second side of the lens (610); and a retainer (670) holding the spacer (660), where the lens (610) is fixed on the exterior case (621).
摘要:
A projection lens has a lens barrel in which group lenses are sequentially disposed and an optical path is set, the lens barrel having position-adjusting holes on a position orthogonal to an optical axis of a third group lens and being orthogonal with each other. The projection lens manufacturing apparatus has a projection lens holding mechanism for holding the projection lens at the lens-adjusting position; an image light irradiating mechanism which introduces the test pattern image in accordance with a light beam irradiated by a light source onto the projection lens; a lens position adjuster which adjusts the position of the third group lens along X-axis and Y-axis while detecting the image light irradiated through the projection lens; and a bonding mechanism for bonding the adjusted third group lens.