ELECTRONIC BOOK
First Claim
Patent Images
1. An electronic book comprising:
- a display panel comprising an electrophoretic display element and an illuminance sensor;
a display control portion comprising a circuit configured to correct an image signal for the electrophoretic display element to display a grayscale image in accordance with illuminance detected by the illuminance sensor; and
a pixel circuit operationally connected to the electrophoretic display element.
1 Assignment
0 Petitions
Accused Products
Abstract
An object is to improve visibility without causing increases in device size and cost. Another object is to improve visibility and reduce the burden on a user without blocking external light when reflection of external light is high. An electronic book includes a display panel having an electrophoretic display element controllable by a pixel circuit of each pixel, and an illuminance sensor, and a display control portion having a circuit configured to correct an image signal for the electrophoretic display element to display a grayscale image in accordance with illuminance that is detected by the illuminance sensor.
-
Citations
12 Claims
-
1. An electronic book comprising:
-
a display panel comprising an electrophoretic display element and an illuminance sensor; a display control portion comprising a circuit configured to correct an image signal for the electrophoretic display element to display a grayscale image in accordance with illuminance detected by the illuminance sensor; and a pixel circuit operationally connected to the electrophoretic display element. - View Dependent Claims (2, 3)
-
-
4. An electronic book comprising:
-
a display panel comprising an electrophoretic display element and an illuminance sensor; a display control portion comprising a grayscale correction circuit, an arithmetic circuit, and an image signal generation circuit; and a pixel circuit operationally connected to the electrophoretic display element, wherein the grayscale correction circuit controllable by the arithmetic circuit is configured to correct a grayscale level of an image signal to be input to the image signal generation circuit, for the electrophoretic display element to display a grayscale image in accordance with illuminance detected by the illuminance sensor. - View Dependent Claims (5, 6)
-
-
7. An electronic book comprising:
-
a display panel comprising an electrophoretic display element and an illuminance sensor; a display control portion comprising a circuit configured to correct an image signal for the electrophoretic display element to display an enlarged character and a circuit configured to correct an image signal to display a grayscale image, in accordance with illuminance detected by the illuminance sensor; and a pixel circuit operationally connected to the electrophoretic display element. - View Dependent Claims (8, 9)
-
-
10. An electronic book comprising:
-
a display panel comprising an electrophoretic display element and an illuminance sensor; a display control portion comprising a grayscale correction circuit, an arithmetic circuit, a character enlargement circuit, and an image signal generation circuit; and a pixel circuit operationally connected to the electrophoretic display element, wherein the character enlargement circuit controllable by the arithmetic circuit is configured to correct an image signal to be input to the image signal generation circuit, for the electrophoretic display element to display an enlarged character in accordance with illuminance detected by the illuminance sensor, and wherein the grayscale correction circuit controllable by the arithmetic circuit is configured to correct a grayscale level of an image signal to be input to the image signal generation circuit, for the electrophoretic display element to display a grayscale image in accordance with illuminance detected by the illuminance sensor. - View Dependent Claims (11, 12)
-
Specification