85 results about "Video-signal generator" patented technology

To reduce flicker appropriately according to illumination condition of an imaging subject, a video camera is provided. The video camera includes an imaging unit for generating a subject image; a superimposing image generator for generating a superimposing image; an image synthesizer for synthesize the subject image and the superimposing image to generate a synthesized image; a video signal generator for generating a video signal from the synthesized image so as to display the synthesized image. The video camera also includes a flicker reduction unit to reduce flicker caused by luminance fluctuation of a light source. The flicker reduction unit has a plurality flicker reduction modes. The mode setting unit makes the superimposing image generator to generate a settings screen as the superimposing image for assisting selection of one of the flicker reduction modes.

The invention provides a test method for a video frequency signal generator, which comprises the following steps: test parameters of the video frequency signal generator are set up; the video frequency signal generator outputs corresponding test signals according to the setup test parameters; the test signals are collected and converted to the test value through controlling a standard tester; and then the test value is received and a test report is generated according to the test value and the test parameters. In addition, the invention also provides a test system of the video frequency signal generator. Utilizing the method can reduce error caused by man-made test and can improve test quality and efficiency.

A test signal interface and method for allowing sharing of multiple test signal generators among multiple devices under test (DUTs). Digital baseband test signals generated by the multiple test signal generators are combined and converted to a baseband analog signal for conversion to a radio frequency (RF) signal for testing the multiple DUTs.

An embodiment of the invention provides a clock signal generator. The clock signal generator is applied to a physical layer subsystem supporting data transmission at multiple Baud rates and comprises a source clock signal generator and two or more processors respectively connected with the output end of the source clock signal generator. The source clock signal generator outputs multiple source clock signals with same frequency according to a reference signal of a reference clock in the subsystem. The processors perform frequency de-multiplication of the multiple source clock signals through a digital logic circuit according to an over-sampling technology to obtain synchronous clock signals corresponding to the Baud rates of the data transmission in the subsystem so as to achieve a timing function and a function of transmitting and receiving data transmitted at the Baud rates. The clock signal generator is used for solving the problem that an existing clock generator in the prior art is large in occupied area and power.

A test signal interface and method for allowing sharing of multiple test signal generators among multiple devices under test (DUTs). Digital baseband test signals generated by the multiple test signal generators are combined and converted to a baseband analog signal for conversion to a radio frequency (RF) signal for testing the multiple DUTs.

The objective of this invention is to provide a pulse signal generator with a simple constitution that can reduce the number of signals required for setting the pulse width, as well as a display device using said pulse signal generator. Pulse assignment signal DP0 input to the initial stage of pulse signal generating units PG(i,0)–PG(i,39) connected in cascade is sequentially transferred towards the last stage of the cascade connection. After transfer of the pulse assignment signal to the pulse signal generating unit in each stage, the count value of said pulse signal generating unit is initialized. Then, the pulses of pulse strings PS0–PS39 in the various pulse signal generating units are counted. The count value of the pulse string is compared to the pulse assignment signal in the comparison unit of each pulse signal generating unit, and, in accordance with the comparison result, the level of the drive pulse signal of the LED is inverted. The pulse intervals (pulse timing) of pulse strings PS0–PS39 are controlled individually by control unit 1 so that the drive pulse signal output from the pulse signal generating unit has the desired pulse width.

A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator.

An exemplary method for testing a video signal generator is provided. The method includes: setting test parameters of the video signal generator to perform a function test; generating signals based on the test parameters through the video generator; controlling a standard measuring apparatus to receive the signals and to convert the signals into test values; determining whether the video signal generator passes the function test by comparing the test values with a standard working range of the video signal generators; and generating a test report based on the test values and the test parameters. A system for testing a video signal generator is also provided. By utilizing the present invention, errors can be reduced and test efficiency can be enhanced.

There are provided: a display surface (20) (mixed picture display part) for assigning a plurality of pieces of video information, respectively, to a plurality of a first divided area (S-I), a second divided area (S-II) and a third divided area (S-II), so as to display the plurality of the pieces of the video information on the display surface (20); a first picture separating mechanism disposed on the display surface (20) corresponding to the first divided area (S-I) of the plurality of the divided areas (S-I, S-II, S-Ill), and defining a predetermined polarizing direction; a second picture separating mechanism disposed on the display surface (20) corresponding to the second divided area (S-II) and the third divided area (S-III) of the plurality of the divided areas (S-I, S-II, S-III), and defining a predetermined polarizing direction different from the polarizing direction of the first picture separating mechanism; mirrors (optical means) (31, 32) disposed rightward and leftward relative to the display surface (20) in such a manner as to form respective predetermined angles relative to the display surface (20); and a third picture separating mechanism (40) defining a polarizing direction same as the polarizing direction of the first picture separating mechanism, and allowing a picture displayed on the display surface (20) and a picture displayed on the mirror (31, 32) to pass through the third separating mechanism (40) for a viewer to view the pictures.

A broadcast receiver includes a first video signal selector which outputs a video signal of a main-picture; a second video signal selector which outputs a video signal of a sub-picture; a first audio signal selector which outputs an audio signal of the main-picture; a second audio signal selector which outputs an audio signal of the sub-picture; a first video processor which generates a third video signal from the video signals of the main-picture and / or sub-picture; a feature quantity generator which generates a feature quantity of the audio signal of the sub-picture in accordance with a result of comparison between data corresponding to the audio signal of the sub-picture and sound class model data created beforehand; a determination processor which determines a scene as a specified scene; and a controller which controls the whole components in accordance with the specified scene.

A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a black-level shift amount holder, and a video signal generator.

An output controller includes: an output enable signal generator for generating corresponding ones among a plurality of output enable signals based on a preset column address strobe (CAS) latency, each of the output enable signals having information relating to a delay time from an activation timing of a CAS signal; and an output driving signal generator for receiving the plurality of output enable signals corresponding to the preset CAS latency and outputting rising and falling output driving signals for controlling an output timing of data.