Close caption support with timewarp
First Claim
1. A method of providing caption display signals to a computer microprocessor, providing said television signal to a computer video display circuit, processing said caption data signals to control at least the location of display of decoded signal, displaying said television signal on a display screen and displaying said caption display signals at said location on said display screen, said television screen being a window displayed on a computer screen, said decoded data being contained in a window on said display screen and constituting said auxiliary screen.
2 Assignments
0 Petitions
Accused Products
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.
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Citations
8 Claims
- 1. A method of providing caption display signals to a computer microprocessor, providing said television signal to a computer video display circuit, processing said caption data signals to control at least the location of display of decoded signal, displaying said television signal on a display screen and displaying said caption display signals at said location on said display screen, said television screen being a window displayed on a computer screen, said decoded data being contained in a window on said display screen and constituting said auxiliary screen.
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7. A method of providing closed captioned data to a television viewer comprising:
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(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. - View Dependent Claims (8)
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Specification