Back to results
US 9,854,200 B2Granted
Video display device, video display method, and program
AssigneeJoled Inc.
InventorShinya Ono
Life of this patent
Estimating the term…
Abstract
A video display device includes a video obtaining unit that obtains a video represented in an input video format for displaying, at a predetermined frame frequency, frames each including an effective pixel region having n rows and m columns, p1 columns of a horizontal blanking period, and q1 rows of a vertical blanking period; a video format conversion unit that converts a format of the video to an output video format for displaying, at the predetermined frame frequency, frames each including the effective pixel region having n rows and m columns, p2 columns of the horizontal blanking period, and q2 rows of the vertical blanking period, where q2 is less than q1; and a display driver unit that displays the video row by row in a display unit at a horizontal scanning frequency in the output video format.
Claims5
A video display device, comprising:
- a display including a plurality of pixel portions that are arranged in a matrix having n rows and m columns;
- a processor;
- a memory including instructions that, when executed by the processor, cause the processor to perform operations including:
- obtaining a video represented in an input video format for displaying, at a predetermined frame frequency, a plurality of frames each including an effective pixel region having n rows and m columns, p1 columns of a horizontal blanking period, and q1 rows of a vertical blanking period;
- converting a format of the video to an output video format for displaying, at the predetermined frame frequency, a plurality of frames each including the effective pixel region having n rows and m columns, p2 columns of the horizontal blanking period, and q2 rows of the vertical blanking period, where q2 is less than q1;
- and
- a display driver configured to display the video row by row in the display at a horizontal scanning frequency in the output video format,
- wherein the operations further include:
- storing the video for each frame in a frame memory;
- generating a horizontal synchronization signal at the horizontal scanning frequency indicated by fHSYNC2 and a dot clock signal at a dot frequency indicated by fDCLK2 based on relationships fHSYNC2=f1F(n+q2) and fDCLK2=f1F(m+p2)(n+q2), where f1F denotes the predetermined frame frequency;
- and
- reading out video data for each pixel from the frame memory based on the dot clock signal, and supplying the video data that has been read out and the horizontal synchronization signal to the display driver, and
- the display driver is further configured to sequentially drive, row by row, a display operation in the pixel portions disposed in one of the rows of the display in synchronization with the horizontal synchronization signal.
10 more elements
A video display method, comprising:
- obtaining a video represented in an input video format for displaying, at a predetermined frame frequency, a plurality of frames each including an effective pixel region having n rows and m columns, p1 columns of a horizontal blanking period, and q1 rows of a vertical blanking period;
- converting a format of the video to an output video format for displaying, at the predetermined frame frequency, a plurality of frames each including the effective pixel region having n rows and m columns, p2 columns of the horizontal blanking period, and q2 rows of the vertical blanking period, where q2 is less than q1;
- and
- displaying the video row by row in a display at a horizontal scanning frequency in the output video format, the display including a plurality of pixel portions that are arranged in a matrix having n rows and m columns,
- wherein the converting includes:
- storing the video for each frame in a frame memory;
- generating a horizontal synchronization signal at the horizontal scanning frequency indicated by fHSYNC2 and a dot clock signal at a dot frequency indicated by fDCLK2 based on relationships fHSYNC2=f1F(n+q2) and fDCLK2=f1F(m+p2)(n+q2), where f1F denotes the predetermined frame frequency;
- and
- reading out video data for each pixel from the frame memory based on the dot clock signal, and supplying the video data that has been read out and the horizontal synchronization signal to a display driver, and
- the displaying includes sequentially driving, by the display driver and row by row, a display operation in the pixel portions disposed in one of the rows of the display in synchronization with the horizontal synchronization signal.
7 more elements
A non-transitory computer-readable recording medium that stores a program that, when executed by a computer, causes a computer to execute a video display method, the video display method comprising:
- obtaining a video represented in an input video format for displaying, at a predetermined frame frequency, a plurality of frames each including an effective pixel region having n rows and m columns, p1 columns of a horizontal blanking period, and q1 rows of a vertical blanking period;
- converting a format of the video to an output video format for displaying, at the predetermined frame frequency, a plurality of frames each including the effective pixel region having n rows and m columns, p2 columns of the horizontal blanking period, and q2 rows of the vertical blanking period, where q2 is less than q1;
- and
- displaying the video row by row in a display at a horizontal scanning frequency in the output video format, the display including a plurality of pixel portions that are arranged in a matrix having n rows and m columns,
- wherein the converting includes:
- storing the video for each frame in a frame memory;
- generating a horizontal synchronization signal at the horizontal scanning frequency indicated by fHSYNC2 and a dot clock signal at a dot frequency indicated by fDCLK2 based on relationships fHSYNC2=f1F(n+q2) and fDCLK2=f1F(m+p2)(n+q2), where f1F denotes the predetermined frame frequency;
- and
- reading out video data for each pixel from the frame memory based on the dot clock signal, and supplying the video data that has been read out and the horizontal synchronization signal to a display driver, and
- the displaying includes sequentially driving, by the display driver and row by row, a display operation in the pixel portions disposed in one of the rows of the display in synchronization with the horizontal synchronization signal.
7 more elements
Dependencies are inferred from the claim text.