Nec Display Solutions, Ltd.

Nec-mitsubishi Electric Visual Systems Corporation

Mitsubishi Electric Control Software Corporation

Hiroki Iwataka

Miyuki Tachibana

Takashi Katagiri

Yutaka Arai

Masatoshi Abe

Hideki Tanizoe

Yasuhiro Arakawa

Kazuaki Takamoto

A method of remotely adjusting a display device is provided which introduces the concept of Pages as a superordinate concept of VCPs known as control or adjustment item codes under current standards, defines the maximum value of the VCP Pages, and controls the VCP Pages from a personal computer, thereby to define and control more VCPs.

Method of remotely adjusting display device and display device

In a video display device of the present invention, a main control unit is equipped with a user interface for varying correction values set to a range correction unit and controls a range correction unit by acquiring the corresponding correction values from a storage unit in accordance with correction level information input by the user interface. The storage unit stores range correction values for the video display unit in correspondence with each piece of the correction level information input by the user interface. Thus, it is possible to correct luminance ranges to suit the user's preference without causing a large luminance reduction.

Video display device and luminance range correction method

An image display in which occurrence of beat noise can be suppressed without adding noise to an image in a pixel converting process is provided. The frequency of a data clock is preset to a value at which beat noise is not apt to occur (a value such that one of the dot clock frequency of the input analog video signal and the frequency of the data clock is not equal to or close to an integral multiple of the other) for each kind of the input analog video signal and is stored as a frequency correspondence list in a memory MM. In accordance with the kind of the input analog video signal, a control block selects the set frequency of the data clock and allows a data clock generating block to generate a data clock C . Consequently, at the time of a pixel converting process performed by a signal processing block without adding noise to an image, occurrence of beat noise is suppressed.

Image display

A difference in sampling data of continuous two pixels in a digital image signal is detected. A CPU monitors the value of an output signal and determines a control value of a control signal so as to make the difference greatest. In a sampling clock generation section, a sampling clock that is synchronous to a dot clock by a synchronous signal and the control signal is generated. When the difference becomes greatest, it is possible to sample an image signal level that is less susceptible to influences from rounding, and consequently to adjust the phase of the sampling clock without an input signal having a specific pattern.

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Hyogo, Japan

Hiroki Iwataka