PatentVote.com: Vote on your favourite invention!


Primary Examiner: Murray, Richard
Assistant Examiner: Masinick, Michael A.
Attorney: Sughrue, Rothwell, Mion & Zinn

Next ten patents ordered by date:
Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh 

 

Title: Color television signal generator



Do you think this is a good invention? Vote now:

 Votes so far: For:(0) Against:(0)
Claims: What is claimed is:

1. A color television signal generator comprising: a means for scanning a colored image area with a flying spot of light which is emitted from a cathode-ray tube whose face plate member includes a stripe layer of repetitive series of parallel different color stripes arranged in a direction crossing the scanning direction of an electron beam in said cathode-ray tube, said flying spot of light varying in chromaticity due to the striped layer, and a single photoelectric converter arranged to receive light from said colored image area and generating a color television signal therefrom.

2. A color television signal generator as specified in claim 1 further including a gramma correcting circuit and a color correcting circuit.

3. A color television signal generator as specified in claim 1 wherein the color recording medium to be imaged is a movie film, and the apparatus further includes a rotary multiplane prism for conversion of the movie film frame rate to a television image.

4. A color television signal generator as specified in claim 1 further including an optical system for projecting the flying spot of light emitted from the face plate to the image area.

5. A color television signal generator as specified in claim 1 wherein said stripe layer comprises a white phosphor layer and a color separating filter stripe layer on said white phosphor layer as said color stripes to emit said flying spot of light.

6. A color television signal generator as recited in claim 5 wherein said color separating filter stripe layer comprises a repetitive series of parallel color filter stripes of red, blue and green.

7. A color television signal generator as specified in claim 1 further including a chrominance signal separating circuit for processing the output of said converter to provide separated color signals.

8. A color television signal generator as specified in claim 7 wherein said cathode-ray tube has a force plate member which includes a white phosphor layer and a color separating filter stripe layer on said white phosphor layer, said filter stripe layer including at least two layered sections, each layered section consisting of a repetitive series of parallel color filter stripes arranged in a direction crossing the horizontal scanning direction of the electron beam, said chrominance signal separating circuit being constructed so that it separates the converter output in terms of frequency.

9. A color television signal generator as specified in claim 8 wherein a first layered section of said filter stripe layer consists of a repetitive series of parallel cyan filter stripes and transparent stripe pieces, and a second layered section consists of a repetitive series of parallel yellow stripe pieces and transparent stripes having a pitch different from that of said first layered section, whereby said first layered section transmits and cuts off red light at a predetermined frequency and said second layered section transmits and cuts off blue light at another predetermined frequency in response to horizontal scanning of the electron beam.

10. A color television signal generator as specified in claim 7 wherein the face plate member of said cathode-ray tube includes a white phosphor layer and a three color separating filter stripe layer on said white phosphor layer, said filter stripe layer comprising a repetitive series of parallel three-color filter stripe pieces arranged in a direction crossing the horizontal scanning direction of the electron beam, said chrominance signal separating circuit being constructed so that it separates the converter output in terms of phase.

11. A color television signal generator as specified in claim 10 wherein said a three-color separating filter stripe layer comprises further stripe pieces for generation of an index signal which stripe pieces are disposed between sets of three color filter stripes.

12. A color television signal generator as specified in claim 7 wherein the face plate member of said cathode-ray tube includes a three-color phosphor stripe layer, said phosphor layer comprising a repetitive series of blue, green and red phosphor stripes pieces arranged in a direction crossing the horizontal scanning direction of the electron beam, said chrominance signal separating circuit being constructed so that its separates the converter output in terms of phase.

13. A color television signal generator as specified in claim 12 wherein said three-color phosphor stripe layer further comprises stripe pieces for the generation of an index signal, which stripe pieces are disposed between sets of three color phosphor stripes.

14. A color television signal generator as specified in claim 1 wherein the face plate member of said cathode-ray tube includes color light emitting means for generating a chromatically variable flying spot on the tube face, the frequency fc of the color variation of the flying spot being determined in accordance with the following equation: ##EQU5## where d is the width of one of said series of parallel different color stripes, D is the horizontal deflection width on the cathode-ray tube face, and .alpha. designates the ratio of the effective scanning time to the total horizontal scanning time period, the frequency, phase and intensity of each emitted color corresponding to those of the corresponding color signal components of the NTSC color television chrominance subcarrier signal, whereby said converter output comprises a signal analogous to the NTSC color television signal.

15. A color television signal generator as specified in claim 14 wherein said color light emitting means further includes color burst zones disposed out of the raster area to generate a color burst signal equivalent to the NTSC color television signal, which comprises a set of color burst stripes parallel to the color stripes.

16. A color television signal generator as specified in claim 15 further including means for scanning side color burst zones and detecting a frequency difference between the color burst signal and a reference signal to thereby regulate the raster width on the tube face to obtain an accurate color carrier frequency.

17. A color television signal generator as specified in claim 14 wherein said color light emitting means comprises a white phosphor layer and a color separating filter stripe layer applied on said white phosphor layer, said filter stripe layer comprising a repetitive series of parallel color filter stripes of red, blue and green arranged in a direction crossing the horizontal scanning direction of the electron beam.

18. A color television signal generator as specified in claim 17 wherein said repetitive series of parallel color filter stripes further include magenta, cyan and yellow filter stripes.

19. A color television signal generator as specified in claim 14 wherein said color light emitting means includes a color phosphor stripe layer which comprises a repetitive series of red, blue, and green emitting phosphor stripes arranged in a direction crossing the horizontal scanning direction of the electron beam.

20. A color television signal generator as specified in claim 19 where said color phosphor stripe layer further includes magenta, cyan and yellow stripe phosphor stripes.

21. A color television signal generator as claimed in claim 14 further comprising a movie film driving mechanism and a rotary multi-plane prism for conversion of frame rate from a movie film to a television image.

22. A color television signal generator as claimed in claim 21 further comprising a light guide one end of which is optically opposed to a color burst zone on the cathode-ray tube and, the other end of which is optically opposed to a photodetector for generating a color burst signal.

23. A color television signal generator as specified in claim 1 wherein said stripe layer comprises a color phosphor stripe layer of a repetitive series of color phosphor stripes.

24. A color television signal generator as specified in claim 23 wherein said color phosphor stripe layer comprises a repetitive series of red, blue and green emitting phosphor stripes.

25. A color television signal generator as specified in claim 24 wherein said color phosphor stripe layer further comprises magenta, cyan and yellow emitting phosphor stripes.

26. A cathode-ray tube for emitting a flying spot of light and adapted for generation of a color-television signal from a color recording medium, having a face plate member including a striped layer of repetitive series of parallel different color stripes arranged in a direction crossing the scanning direction of an electron beam in said cathode-ray tube, said flying spot of light being chromatically variable due to scanning of said electron beam over said face plate member, the order of arrangement and widths of said different color stripes being such that the frequency, phase and intensity of each color light component of said flying spot of light corresponds substantially to those of the corresponding color signal component of the ideal chrominance subcarrier signal.

27. A cathode-ray tube as specified in claim 26 wherein said face plate member comprises a white phosphor layer and a color separating filter stripe layer applied on the white phosphor layer, said filter stripe layer consisting of a repetitive series of parallel dichroic filter stripes arranged in a direction crossing the horizontal scanning direction of the electron beam to thereby cyclically transmit selected color light towards the tube face in synchronism with the electron beam scanning.

28. A cathode-ray tube as specified in claim 26 wherein said face plate member comprises a repetitive series of color phosphor stripes arranged in a direction crossing the horizontal scanning direction of the electron beam.

29. A cathode-ray tube as specified in claim 26 wherein said face plate member is designed so that the flying spot changes in color, whereby emitted color light can be separated depending upon the difference in repetition frequency at which the same color occurs.

30. A cathode-ray tube as specified in claim 26 wherein said face plate member is designed so that the flying spot changes in color whereby emitted color light can be separated depending upon the difference in phase at which the same color repeatedly occurs.

31. A cathode-ray tube as specified in claim 26 wherein in said face plate member the flying spot of light regularly changes in color to red, blue and green in synchronism with the electron beam scanning said different color stripes being arranged in the order of red, blue and green with relative widths of 107.0.degree., 137.1.degree. and 115.9.degree., respectively.

32. A cathode-ray tube as specified in claim 26 wherein in said face plate member the flying sot of light regularly changes in color to red, magenta, blue, cyan, green and yellow in synchronism with the electron beam scanning, said different color stripes being arranged in the order of red, magenta, blue, cyan, green, and yellow with the relative widths of 73.0.degree., 64.1.degree., 42.9.degree., 73.0.degree., 64.1.degree., and 42.9.degree., respectively.

Other info:


Inventors: Ohta, Takahiro (Asaka, JA)

Application Number: 300061
Filing Date: 1972-10-24
Publication_date: 1976-01-27
Assignee: Fuji Photo Film Co., Ltd. (Minami-ashigara, JA)
Primary Class(es): 348/101
Other Classes:
US Patent Ref:
1934821Nov, 1933Rudenberg178/6.
2552070May, 1951Sziklai178/5.
2954424Sep, 1960Thiele358/69.
3001012Sep, 1961Braicks178/5.
3075432Jan, 1963Myers178/5.
3444413May, 1969Harrold178/5.
3506778Apr, 1970Gold et al.178/5.
3619484Nov, 1971Tanaka et al.178/5.
3719771Mar, 1973Eto et al.178/5.
3745234Jul, 1973Szymber178/5.
3770882Nov, 1973Szymber178/5.
3851094Nov, 1974Sasabe178/6.

Other Refs: 8,699
Mar, 1970JA.
Other References: B 344,203 U.S. Published Patent Application, Sasabe, Published, Jan. 28, 1975.