GB1338346A - Television special effects control pulse-generating apparatus - Google Patents

Television special effects control pulse-generating apparatus

Info

Publication number
GB1338346A
GB1338346A GB2410372A GB2410372A GB1338346A GB 1338346 A GB1338346 A GB 1338346A GB 2410372 A GB2410372 A GB 2410372A GB 2410372 A GB2410372 A GB 2410372A GB 1338346 A GB1338346 A GB 1338346A
Authority
GB
United Kingdom
Prior art keywords
output
counter
sawtooth
line
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2410372A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1338346A publication Critical patent/GB1338346A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay
    • H04N5/275—Generation of keying signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
    • H03K4/026—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform using digital techniques
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/04—Generating pulses having essentially a finite slope or stepped portions having parabolic shape
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Circuits (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
GB2410372A 1971-05-28 1972-05-23 Television special effects control pulse-generating apparatus Expired GB1338346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14787771A 1971-05-28 1971-05-28

Publications (1)

Publication Number Publication Date
GB1338346A true GB1338346A (en) 1973-11-21

Family

ID=22523284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2410372A Expired GB1338346A (en) 1971-05-28 1972-05-23 Television special effects control pulse-generating apparatus

Country Status (9)

Country Link
US (1) US3757041A (enExample)
JP (1) JPS547168B1 (enExample)
AT (1) AT322018B (enExample)
AU (1) AU463871B2 (enExample)
CA (1) CA979520A (enExample)
FR (1) FR2140004B1 (enExample)
GB (1) GB1338346A (enExample)
IT (1) IT955918B (enExample)
NL (1) NL7207152A (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818130A (en) * 1973-01-09 1974-06-18 Westinghouse Electric Corp Reading pacer for educational television
US3833760A (en) * 1973-02-27 1974-09-03 Ferranti Ltd Television systems
US4356511A (en) * 1978-05-23 1982-10-26 Sony Corporation Digital soft-edge video special effects generator
US4620291A (en) * 1984-02-06 1986-10-28 Mcdonnell Douglas Corporation Digital-to-analog converter interpolator
US4605967A (en) * 1984-03-12 1986-08-12 Pires H George Digital video special effects generator
EP0438061B1 (en) * 1990-01-19 1995-11-08 Matsushita Electric Industrial Co., Ltd. Wipe waveform signal generator
JP3182759B2 (ja) * 1990-09-05 2001-07-03 ソニー株式会社 パラボラ波発生回路
KR19980020968A (ko) * 1996-09-13 1998-06-25 구자홍 영상표시기기의 휘도조정장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240420A (en) * 1939-05-11 1941-04-29 Philco Radio & Television Corp Electrical system
FR1496141A (fr) * 1966-06-03 1967-09-29 Cit Alcatel Générateur d'ondes modulées en fréquence
GB1141952A (en) * 1967-01-19 1969-02-05 Airmec Ltd Improvements in or relating to electrical oscillators
US3581011A (en) * 1967-10-23 1971-05-25 Telemation Television broadcast synchronizing apparatus and method

Also Published As

Publication number Publication date
DE2225501A1 (de) 1972-12-07
CA979520A (en) 1975-12-09
AU463871B2 (en) 1975-08-07
US3757041A (en) 1973-09-04
IT955918B (it) 1973-09-29
JPS547168B1 (enExample) 1979-04-04
FR2140004B1 (enExample) 1978-03-03
NL7207152A (enExample) 1972-11-30
AT322018B (de) 1975-04-25
AU4280072A (en) 1973-11-29
DE2225501B2 (de) 1974-06-12
FR2140004A1 (enExample) 1973-01-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee