摘要:
A video display device that allows the color temperature of the signals in white color attributes having high luminance and low chroma saturation to be corrected with high precision is provided with a color temperature correction method so as to visually obtain a desirable white color on display. In some embodiments, the signal processing circuit can include an A/D converter to convert video signals into digitalized signals, a matrix circuit to convert the digitalized signals into luminance signals and at least two color difference signals, a hue conversion circuit to obtain hue signals from the color difference signals, a hue correction circuit to correct hue signals, a chroma saturation conversion circuit to obtain chroma saturation signals from color difference signals, a chroma saturation correction circuit to correct chroma saturation signals and a color temperature correction circuit to perform the color temperature correction on the respective hue and chroma saturation signals.
摘要:
A gamma correction circuit includes a node level setting unit set predetermined level values of video signals from outside, in a case where encoded M-bit (where M is an arbitrary integer) video signals being represented by using predetermined number of sections and the level values of the video signals corresponding to 2n+1 number of nodes (where n is an arbitrary integer) associated with the sections on which the node are specified, and a gamma correction unit for executing gamma correction for the M-bit video signal in accordance with the level values of the nodes set in the node level setting unit, thereby the gamma correction circuit executes gamma correction on various types of display devices.
摘要:
A video display apparatus comprises a color temperature correction circuit which controls temperature color of an input video signal; a display device which displays an image upon basis of said video signal corrected by said color temperature correction circuit; and a signal producing circuit which obtains a hue signal from said input video signal. The color temperature correction circuit controls said hue signal corresponding to the video signal of white color attributes, which has luminance equal to or greater than a predetermined value and chroma saturation equal to or less than a predetermined value, whereby achieving the color temperature correction.
摘要:
A video display device that allows the color temperature of the signals in white color attributes having high luminance and low chroma saturation to be corrected with high precision is provided together with the color temperature correction method for the same so as to visually obtain a desirable white color on display. The signal processing circuit for the color temperature correction according to this invention comprises an A/D converter to convert the video signals as input into digitalized signals, a matrix circuit to convert the digitalized signals as output from said A/D converter into luminance signals and at least two color difference signals, a hue conversion circuit to obtain hue signals from the color difference signals as output from said matrix circuit, a hue correction circuit to correct said hue signals, a chroma saturation conversion circuit to obtain chroma saturation signals from said color difference signals, a chroma saturation correction circuit to correct said chroma saturation signals and a color temperature correction circuit to perform the color temperature correction on the respective hue and chroma saturation signals as corrected.
摘要:
A display apparatus, including: a display portion to display an image based upon a digital broadcasting signal received by a receiving portion; a main control portion to control each portion within the display apparatus; and a sub-control portion to control a supply of electronic power within the display apparatus, responsive to a signal wherein a waiting condition of the display apparatus in which an image is not displayed after stopping a supply of the electronic power to the display portion, is controlled by the sub-control portion, to be placeable into either of a first or second waiting condition, the first waiting condition is smaller in consumption of electronic power and the sub-control portion and the main control portion are controlled not to be set in operation, under the first waiting condition, while both are controlled to be set in operation, under the second waiting condition.
摘要:
For providing a broadcast receiving apparatus and a method for staring thereof, suppressing electric power consumption therein, under waiting condition, irrespective of mounting a constituent part requiring a long time for starting up, according to the present invention, within a broadcast receiving apparatus, detection is made, always, upon an approach of a human being, by means of a human sensor 40 and a sub-CPU 60, under the condition that a power plug 75 is inserted into a commercial electric power source, so as to control supply of electric power form a main electric power source unit to each of portions of that apparatus. Thus, prior to startup of that apparatus through a main switch 22 and a remote controller 30, a constituent portion (i.e., a video processing portion 200), being made up with a CPU and/or a digital LSI, installing OS therein and talking time for startup thereof, is started up, in advance, so as to bring it into awaiting condition; thereby shortening or reducing the waiting time after the startup of the apparatus with suppressing the electric power consumption under the waiting condition thereof.
摘要:
A video display device that allows the color temperature of the signals in white color attributes having high luminance and low chroma saturation to be corrected with high precision is provided with a color temperature correction method so as to visually obtain a desirable white color on display. In some embodiments, the signal processing circuit can include an A/D converter to convert video signals into digitalized signals, a matrix circuit to convert the digitalized signals into luminance signals and at least two color difference signals, a hue conversion circuit to obtain hue signals from the color difference signals, a hue correction circuit to correct hue signals, a chroma saturation conversion circuit to obtain chroma saturation signals from color difference signals, a chroma saturation correction circuit to correct chroma saturation signals and a color temperature correction circuit to perform the color temperature correction on the respective hue and chroma saturation signals.
摘要:
A video display device that allows the color temperature of the signals in white color attributes having high luminance and low chroma saturation to be corrected with high precision is provided together with the color temperature correction method for the same so as to visually obtain a desirable white color on display. The signal processing circuit for the color temperature correction according to this invention comprises an A/D converter to convert the video signals as input into digitalized signals, a matrix circuit to convert the digitalized signals as output from said A/D converter into luminance signals and at least two color difference signals, a hue conversion circuit to obtain hue signals from the color difference signals as output from said matrix circuit, a hue correction circuit to correct said hue signals, a chroma saturation conversion circuit to obtain chroma saturation signals from said color difference signals, a chroma saturation correction circuit to correct said chroma saturation signals and a color temperature correction circuit to perform the color temperature correction on the respective hue and chroma saturation signals as corrected.
摘要:
For providing a broadcast receiving apparatus and a method for staring thereof, suppressing electric power consumption therein, under waiting condition, irrespective of mounting a constituent part requiring a long time for starting up, according to the present invention, within a broadcast receiving apparatus, detection is made, always, upon an approach of a human being, by means of a human sensor 40 and a sub-CPU 60, under the condition that a power plug 75 is inserted into a commercial electric power source, so as to control supply of electric power form a main electric power source unit to each of portions of that apparatus. Thus, prior to startup of that apparatus through a main switch 22 and a remote controller 30, a constituent portion (i.e., a video processing portion 200), being made up with a CPU and/or a digital LSI, installing OS therein and talking time for startup thereof, is started up, in advance, so as to bring it into awaiting condition; thereby shortening or reducing the waiting time after the startup of the apparatus with suppressing the electric power consumption under the waiting condition thereof.
摘要:
In the electric field measuring device, a DC bias circuit applying a DC bias voltage to an optical intensity modulator is disposed in an area, and a DC bias control portion controlling a DC bias voltage is disposed outside the area. An electrical signal of a DC bias voltage which is output from the DC bias control portion is converted into an optical signal by an electrical-optical converter (E/O) so as to be introduced into the area via an optical fiber, and the optical signal is converted into an electrical signal by an optical-electrical converter (O/E) disposed in the area such that the electrical signal is input to the DC bias circuit.