JPS5787686A - Beam index type color television receiver - Google Patents

Beam index type color television receiver

Info

Publication number
JPS5787686A
JPS5787686A JP16413280A JP16413280A JPS5787686A JP S5787686 A JPS5787686 A JP S5787686A JP 16413280 A JP16413280 A JP 16413280A JP 16413280 A JP16413280 A JP 16413280A JP S5787686 A JPS5787686 A JP S5787686A
Authority
JP
Japan
Prior art keywords
color
generation
primary color
intermediate color
chroma
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.)
Granted
Application number
JP16413280A
Other languages
Japanese (ja)
Other versions
JPH0221197B2 (en
Inventor
Shunichi Kishimoto
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP16413280A priority Critical patent/JPS5787686A/en
Publication of JPS5787686A publication Critical patent/JPS5787686A/en
Publication of JPH0221197B2 publication Critical patent/JPH0221197B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
    • H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To achive a good color saturation with a simple circuit, by increasing the electron beam spot diameter at the production of an intermediate color and decreasing that at the production of a primary color and performing chroma scanning with the same frequency at any case. CONSTITUTION:The three primary color signals and chroma subcarrier wave are multiplied by three at the 1st and 2nd multiplication circuits 15 and 17 respectively and supplied to a discrimination circuit 18. When the frequency difference is taken, the output voltage is different for the primary color and the intermediate color as shown in Fig. (b), and it is applied to a collecting electrode 20 of a picture tube 1 through an amplifier 19. As a result, control is made that the electron beam spot diameter is small at the generation of the primary color to avoid other fluorescent substance from being shocked and large at the generation of the intermediate color to sufficiently excite the fluorescent substance at both sides clipping the guard band. Thus, since the chroma scanning is made for both cases with the same triplet frequency, an auxiliary deflection yoke is driven with reasonable method and the color saturation at the generation of the intermediate color is sufficiently achieved.
JP16413280A 1980-11-20 1980-11-20 Beam index type color television receiver Granted JPS5787686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16413280A JPS5787686A (en) 1980-11-20 1980-11-20 Beam index type color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16413280A JPS5787686A (en) 1980-11-20 1980-11-20 Beam index type color television receiver

Publications (2)

Publication Number Publication Date
JPS5787686A true JPS5787686A (en) 1982-06-01
JPH0221197B2 JPH0221197B2 (en) 1990-05-14

Family

ID=15787348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16413280A Granted JPS5787686A (en) 1980-11-20 1980-11-20 Beam index type color television receiver

Country Status (1)

Country Link
JP (1) JPS5787686A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617591A (en) * 1984-01-09 1986-10-14 Hitachi, Ltd. Chroma scanning circuit for use in beam index type color picture reproducing apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275225A (en) * 1975-12-19 1977-06-24 Sanyo Electric Co Ltd White color for developing system beam index type color television
JPS53149723A (en) * 1977-06-01 1978-12-27 Sanyo Electric Co Ltd Color television receiver of beam-index type
JPS5496926A (en) * 1978-01-17 1979-07-31 Sanyo Electric Co Ltd Beam index type color television picture receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275225A (en) * 1975-12-19 1977-06-24 Sanyo Electric Co Ltd White color for developing system beam index type color television
JPS53149723A (en) * 1977-06-01 1978-12-27 Sanyo Electric Co Ltd Color television receiver of beam-index type
JPS5496926A (en) * 1978-01-17 1979-07-31 Sanyo Electric Co Ltd Beam index type color television picture receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617591A (en) * 1984-01-09 1986-10-14 Hitachi, Ltd. Chroma scanning circuit for use in beam index type color picture reproducing apparatus

Also Published As

Publication number Publication date
JPH0221197B2 (en) 1990-05-14

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