摘要:
A plasma display apparatus includes an IC that operates with a power supply voltage, of which a difference between a ground potential and a power supply potential is substantially more than 50 V, a ceramic condenser disposed in a vicinity of the IC and coupled between the ground potential and the power supply potential of the IC, and a resistor connected in series with the ceramic condenser between the ground potential and the power supply potential.
摘要:
A plasma display device includes a PDP module having a plasma display panel (PDP), a drive circuit applying positive and negative sustain pulses having the same absolute value to the PDP, and a voltage detection circuit detecting voltage from the power supply module, and a power supply module having voltage output terminals connected to voltage input terminals of the PDP module through connection means, generating a positive voltage required to produce positive sustain pulses and a negative voltage required to produce negative sustain pulses from an AC supply voltage, both pulses being supplied to the PDP module, outputting both voltages from the voltage output terminals, and performing a feedback control for the output voltage based on a detection result from the voltage detection circuit, thereby effectively generating the positive and negative voltages required to produce the positive and negative sustain pulses without complex circuit configuration.
摘要:
A plasma display device which stops power supply or drive of a device by detecting an abnormality. The plasma display device is provided with a panel section (11) which has an address electrode (14) and performs display based on inputted display data, and a circuit section having an address drive circuit (17). The plasma display device is further provided with a means (2) for calculating a switching number of times of the address drive circuit (17) based on the inputted one or more display data; a means (2) for calculating a predicted current value (predicted power consumption value) by predicting consumption at the address drive circuit, based on the switching number of times obtained by the calculation; a means (3) for detecting a current consumption value (actual power consumption value) actually consumed at the address drive circuit (17), based on the display data; and a means (2) for comparing the predicted power consumption value with the actual power consumption value and judging whether it is abnormal.
摘要:
An ALIS system PDP apparatus in which a reduction in the variation in luminance due to ringing has been reduced is disclosed. In an ALIS system PDP apparatus, X (first) electrodes and Y (second) electrodes are arranged in such a way that the X electrodes and the Y electrodes, whose path length, which is the length of each of the signal paths of a sustain discharge pulse from the X and Y electrode to sustain drive circuits, is longer or shorter than that of the peripheral X and Y electrodes, do not exist densely. Specifically, the order of arrangement of the odd and even X sustain drive circuits is reversed to that of odd and even Y sustain drive circuits.
摘要:
The color reproduction correction circuit which corrects the color distortion caused when color signals using the first combination of the three primary colors are reproduced in a color display of the second combination of the different primary color sources has been disclosed, wherein: a provided color correction circuit generates the mixed color signal by multiplying the color signal in question by the specified coefficients and adding the mixed color signal to other color signals; the mixed colors in the second combination are used as primary color light sources in the second combination; the specified coefficients are determined so that these mixed color light sources are made close to the coordinates of the primary color light sources of the first combination; and the luminescent chromaticity values of the three primary colors are corrected so that the chromaticity values of the device match those specified by the signal system.
摘要:
A display apparatus and display method are provided for a display panel having pixels arranged in a matrix form for displaying an image on a effective display area. Horizontal electrodes and vertical electrodes in the display panel are scanned for selectively illuminating said pixels by using a time sharing drive method in which one field period is divided into plural sub-fields weighted according to a sustaining period. As a result, an effective display area is divided into plural areas, no scanning for selecting a light emitting pixel is executed in a non-display area, and the number of sub-fields is increased in an area in which display in multiple gradations is required in a display area to obtain sufficient gradation. Instead of increasing the number of the sub-fields, the total sustaining period per one field is increased to obtain sufficient brightness. According to a feature of the invention, another area is provided in which the number of sub-fields is limited to the required minimum in which display in multiple gradations is not required. According to other feature of the invention, another area having few sub-fields is prepared instead of providing the non-display area.
摘要:
The color reproduction correction circuit which corrects the color distortion caused when color signals using the first combination of the three primary colors are reproduced in a color display of the second combination of the different primary color sources has been disclosed, wherein: a provided color correction circuit generates the mixed color signal by multiplying the color signal in question by the specified coefficients and adding the mixed color signal to other color signals; the mixed colors in the second combination are used as primary color light sources in the second combination; the specified coefficients are determined so that these mixed color light sources are made close to the coordinates of the primary color light sources of the first combination; and the luminescent chromaticity values of the three primary colors are corrected so that the chromaticity values of the device match those specified by the signal system.
摘要:
A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.
摘要:
A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.
摘要:
A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.