Image display method and apparatus

An image display method comprising:

• irradiating light from a light source to a light-receiving display device to display an image;
• providing a correlation between adjustment of luminance of the display device and adjustment of luminance of the light source in accordance with entered display data;
• determining, from the display data, a luminance representative value “Ir” in an entire display screen and a luminance maximum value “I1max” in a macro area;
• providing luminance transformation of luminance taken out of the display data, thereby providing a luminance-transformed luminance;
• and
• adjusting the luminance of the display device in accordance with the luminance-transformed luminance, wherein the luminance transformation has transformation characteristics in which slope average “r1” in a range of 0≦I<Ir, slope average “r2” in a range of Ir≦I<I1max, and slope average “r3” in a range of I>I1max establish a relationship of r1≧r2>r3 in an area defined by a horizontal axis showing luminance “I” taken out of the display data and a vertical axis showing luminance-transformed luminance “I#”.

An image display method comprising:

• irradiating light from a light source to a light-receiving display device to display an image;
• and
• providing a correlation between adjustment of luminance of the display device and adjustment of luminance of the light source in accordance with entered display data,
• wherein a maximum value of RGB values in an entire image is employed as luminance for use in the adjustment of the luminance of the display device and the adjustment of the luminance of the light source.

An image display method comprising:

• irradiating light from a light source to a light-receiving display device to display an image;
• and
• providing a correlation between adjustment of luminance of the display device and adjustment of luminance of the light source in accordance with entered display data,
• wherein the luminance of the light source is adjusted in accordance with contra-characteristics that counteract γ-characteristics inherent to the display device.

An image display apparatus comprising:

• a light-receiving display device;
• a light source operable to irradiate light to said light-receiving display device;
• said image display apparatus operable to provide a correlation between adjustment of luminance of said light-receiving display device and adjustment of luminance of said light source in accordance with entered display data;
• a characteristic-determining amount-calculating unit operable to determine a characteristic-determining amount from the display data;
• and
• a luminance-transforming unit operable to provide, with reference to transformation characteristics, luminance transformation of luminance taken out of the display data,
• wherein the transformation characteristics are such that different slope averages in the vicinity of the characteristic-determining amount are exhibited in an area defined by a horizontal axis showing luminance “I” taken out of the display data and a vertical axis showing luminance-transformed luminance “I#”.

An image display apparatus comprising:

• a light-receiving display device;
• a light source operable to irradiate light to said light-receiving display device;
• said image display apparatus operable to provide a correlation between adjustment of luminance of said light-receiving display device and adjustment of luminance of said light source in accordance with entered display data;
• a representative-calculating unit operable to determine, with reference to the display data, a luminance representative value “Ir” in an entire display screen;
• a maximum value-calculating unit operable to determine, with reference to the display data, a luminance maximum value “I1max” in a macro area;
• and
• a luminance-transforming unit operable to provide luminance transformation of luminance taken out of the display data,
• wherein said luminance-transforming unit provides the luminance transformation such that slope average “r1” in a range of 0≦I<Ir, slope average “r2” in a range of Ir≦I<I1max, and slope average “r3” in a range of I≧I1max establish a relationship of r1≧r2>r3 in an area defined by a horizontal axis showing luminance “I” taken out of the display data and a vertical axis showing luminance-transformed luminance “I#”.

An image display apparatus comprising:

• a light-receiving display device;
• a light source operable to irradiate light to the light-receiving display device;
• and
• said image display apparatus operable to provide a correlation between adjustment of luminance of said light-receiving display device and adjustment of luminance of said light source in accordance with entered display data,
• wherein a maximum value of RGB values in an entire image is employed as luminance for use in the adjustment of the luminance of said light-receiving display device and the adjustment of the luminance of said light source.

An image display apparatus comprising:

• a light-receiving display device;
• a light source operable to irradiate light to the light-receiving display device;
• said image display apparatus operable to provide a correlation between adjustment of luminance of said light-receiving display device and adjustment of luminance of said light source in accordance with entered display data;
• and
• a light-emitting compensation table operable to adjust the luminance of said light source in accordance with contra-characteristics that counteract y-characteristics inherent to said light-receiving display device.