Claims
- 1. A progressive scan display system comprising:
- comb filter means having an input for receiving a composite video input signal having a given line rate, having a first output for providing a comb filtered luminance output signal and having a second output for providing a comb filtered chrominance output signal;
- first speed-up circuit means coupled to said input of said comb filter means for receiving said composite video input signal and coupled to said first output of said comb filter means for receiving said comb filtered luminance signal for providing a processed luminance output signal having a line rate double said given line rate;
- second speed-up circuit means coupled to said second output of said comb filter means for providing a processed chrominance output signal having a line rate double said given line rate;
- display means coupled to said first and second speed-up circuit means for displaying said processed luminance and chrominance signals in progressive scan fashion; and wherein
- said first speed-up circuit means being of a non-interpolating type and including circuit means for suppressing a chrominance component of said composite video input signal supplied thereto from said input of said comb filter means.
- 2. A progressive scan display system as recited in claim 1 wherein said comb filter means comprises an adder means and a subtractor means, each having a first input connected to said input of said comb filter means, each having a second input coupled via a one-line delay means to said input of said comb filter means, said adder means having an output connected to said first output of said comb filter means, said subtractor means having an output connected to said second output of said comb filter means.
- 3. A progressive scan processor as recited in claim 1 wherein said first speed-up circuit means is of a type for interleaving lines of said video input signal provided by said input and said first output of said comb filter means and wherein said second speed-up circuit means is of a type for repeating lines of said video input signal provided by said second output of said comb filter means.
- 4. A progressive scan display system as recited in claim 1 wherein said circuit means comprises means for combining said composite video input signal with said comb filtered chrominance output signal to cancel said chrominance component of said composite video input signal supplied to said first speed-up circuit means.
- 5. A progressive scan display system as recited in claim 1 wherein said circuit means comprises means for low-pass filtering said composite video input signal supplied to said first speed-up circuit means.
Parent Case Info
This is a division of application Ser. No. 526,702, filed Aug. 26, 1983 which issued Dec. 10, 1985, as U.S. Pat. No. 4,558,347.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2110900 |
Jun 1983 |
GBX |
2111343 |
Jun 1983 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Paper "A Motion Adaptive High-Definition Converter for NTSC Color TV Signals", Achiha et al., May 1983, 13th International Television Symposium in Montreux, Achiha et al. |
"Development of New TV Receiver Digital Television Adaptable to New Media", Sony Corp. Aug. 15, 1983. |
Divisions (1)
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Number |
Date |
Country |
Parent |
526702 |
Aug 1983 |
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