Back to results
US RE39,003 E1Granted
Closed caption support with timewarp
AssigneeATI Technologies, Inc.
InventorsStephen J. Orr, Antonio Rinaldi
Life of this patent
Estimating the term…
Abstract
Method of providing closed captioned data to a television viewer comprised of detecting closed captioned data signals transmitted in conjunction with a television signal, decoding the data signals to caption display signals, and displaying the caption display signals on an auxiliary screen separate from a screen displaying the television signals.
Claims21
A method of providing closed captioned data to a television viewer comprising:
- (a) detecting closed captioned data signals transmitted in conjunction with a television signal,
- (b) decoding said data signals to caption display signals,
- (c) displaying said caption display signals on an auxiliary screen separate from a screen displaying said television signals,
- (d) providing said caption display signals to a computer microprocessor,
- (e) providing said television signal to a computer video display circuit,
- (f) processing said caption data signals to control at least the location of display of said decoded signal,
- (g) displaying said television signal on a display screen and displaying said caption display signals at said location on said display screen,
- (h) said television screen being a window displayed on a computer screen,
- (i) said decoded data being contained in a window on said display screen and constituting said auxiliary screen.
6 more elements
A method of providing closed captioned data to a television viewer comprising:
- (a) detecting closed captioned data signals transmitted in conjunction with a television signal,
- (b) decoding said data signals to caption display signals,
- (c) displaying said caption display signals on an auxiliary screen separate from a screen displaying said television signals,
- (d) providing said caption display signals to a computer microprocessor,
- (e) processing said caption display signals to control at least one of font and size of said caption display signals,
- (f) in which the closed captioned data signal includes an initial sinusoidal run-in signal followed by data bits, and
- (g) in which the detection step includes locking a phase locked loop to the run-in signal, locating the data bits and obtaining closed captioned data bits by sampling the data bits and computing the average value of several samples in the location of each data bit and determining whether each data bit is a zero or a one based on the average value being above or below a predetermined threshold.
4 more elements
A method for providing closed captioned data and video data on a display, the method comprises the steps of:
- a) receiving a video signal that includes the closed captioned data and the video data;
- b) decoding the closed captioned data to produce decoded closed captioned data;
- c) digitizing the video data to produce digital video data;
- d) associating the digital video data in a first window on the display;
- e) associating the decoded closed captioned data in a second window for subsequent presentation on the display, wherein the first and second windows, when presented, are non-obscuring of each other, and wherein, when presented, locations of the first and second windows are based on control input;
- wherein the step (d) further comprises:
- storing the digitized video data in video memory to produce stored video data;
- retrieving the stored video data from memory to produce retrieved video data;
- scaling and timing the retrieved video data to be contained within the first window to produce scaled video data;
- and
- converting the scaled video data to analog video data, wherein the analog video data is presented on the display in the first window.
8 more elements
A method for providing closed captioned data and video on a display, the method comprises the steps of:
- a) receiving a video signal that includes the closed captioned data and the video data;
- b) decoding the closed captioned data to produce decoded closed captioned data;
- c) digitizing the video data to produce digital video data;
- d) associating the digital video data in a first window on the display;
- e) associating the decoded captioned data in a second window for subsequent presentation on the display, wherein the first and second windows, when presented, are non-obscuring of each other, and wherein, when presented, locations of the first and second windows are based on control input;
- wherein step (e) further comprises:
- storing the decoded closed captioned data in video memory to produce stored closed captioned data;
- retrieving the stored closed captioned data from memory to produce retrieved closed captioned data;
- scaling and timing the retrieved closed captioned data to be contained within the second window to produce scaled closed captioned data;
- and
- converting the scaled closed captioned data to analog closed captioned data, wherein the analog closed captioned data is presented on the display in the second window.
8 more elements
An apparatus for displaying closed captioned data and video data comprises:
- video interface circuit operably coupled to receive a video signal that includes the closed captioned data and the video data, wherein the video interface circuit digitizes the video data to produce digital video data and decodes the closed captioned data or produce decoded closed captioned data;
- and
- a graphics control circuit operable to generate a first and second windows, wherein the graphics control circuit associates the digital video data with the first window and associates the decoded closed captioned data with the second window, wherein the first and second windows are non-obscuring of each other, and wherein locations of the first and second windows are based on control input;
- wherein the control input is a control signal, wherein the control input further controls at least one of:
- size of the first window, size of the second window, and size of text of the decoded closed captioned data, color of the text of the decoded closed captioned data, background of the second window and display mode of the decoded closed captioned data.
2 more elements
The apparatus of claim 13 further comprises video memory operably coupled to the video interface and the graphics control circuit, wherein the video memory store the digital video data and the decoded closed captioned data prior to being placed in the first and second windows.
An apparatus for displaying closed captioned data and video data comprises:
- video interface circuit operably coupled to receive a video signal that includes the closed captioned data and the video data, wherein the video interface circuit digitizes the video data to produce digital video data and decodes the closed captioned data to produce decoded closed captioned data;
- a graphics control circuit operable to generate a first and second windows, wherein the graphics control circuit associates the digital video data with the first window and associates the decoded closed captioned data with the second window, wherein the first and second windows are non-obscuring of each other, and wherein location of the first and second windows are based on control input;
- and
- a random access memory digital to analog converter operably coupled to the graphics control circuit, wherein the random access memory digital to analog converter converts the digital video data and the decoded closed captioned data in to analog video signals and analog closed captioned signals, respectively, that are provided to a display, such that the display presents the first and second windows.
1 more element
An apparatus for displaying closed captioned data and video data comprises:
- video interface circuit operably coupled to receive a video signal that includes the closed captioned data and the video data, wherein the video interface circuit digitizes the video data to produce digital video data and decodes the closed captioned data to produce decoded closed captioned data;
- and
- a graphics control circuit operable to generate a first and second windows, wherein the graphics control circuit associates the digital video data with the first window and associates the decoded closed captioned data with the second window, wherein the first and second windows are non-obscuring of each other, and wherein locations of the first and second windows are based on control input;
- wherein the graphics control circuit associates the decoded closed captioned data with the second window by:
- storing the decoded closed captioned data in video memory to produce stored closed captioned data;
- retrieving the stored closed captioned data from memory to produce retrieved closed captioned data;
- scaling and timing the retrieved closed captioned data to be contained within the second window to produce scaled closed captioned data;
- and
- providing the scaled closed captioned data to the random access memory digital to analog converter to produce the analog closed captioned data, wherein the analog closed captioned data is presented on the display in the second window.
6 more elements
A digital storage medium that stores programming instructions that, when executed by a computer, cause the computer to provide non-obscuring closed captioned data, the digital storage medium comprises:
- a first storage means for storing programming instructions that cause the computer to receive a video signal that includes the closed captioned data and the video data;
- a second storage means for storing programming instructions that cause the computer to decode the closed captioned data to produce decoded closed captioned data;
- a third storage means for storing programming instructions that cause the computer to digitize the video data to produce digital video data;
- a fourth storage means for storing programming instructions that cause the computer to associate the digital video data in a first window on the display;
- a fifth storage means for storing programming instructions that cause the computer to associate the decoded closed captioned data in a second window for subsequent presentation on the display, wherein the first and second windows, when presented, are non-obscuring of each other, and wherein, when presented, locations of the first and second windows are based on control input.
2 more elements
Dependencies are inferred from the claim text.