JPS5765979A - Signal processing device - Google Patents

Signal processing device

Info

Publication number
JPS5765979A
JPS5765979A JP14350080A JP14350080A JPS5765979A JP S5765979 A JPS5765979 A JP S5765979A JP 14350080 A JP14350080 A JP 14350080A JP 14350080 A JP14350080 A JP 14350080A JP S5765979 A JPS5765979 A JP S5765979A
Authority
JP
Japan
Prior art keywords
scanning lines
circuit
output
horizontal scanning
superposed
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
JP14350080A
Other languages
Japanese (ja)
Other versions
JPS6151473B2 (en
Inventor
Masayoshi Hirashima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14350080A priority Critical patent/JPS5765979A/en
Publication of JPS5765979A publication Critical patent/JPS5765979A/en
Publication of JPS6151473B2 publication Critical patent/JPS6151473B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

PURPOSE:To follow the fluctuation of scanning lines where information are superposed, by providing a circuit or the like which detects only horizontal scanning lines, where a binary additional information signal such as a character signal is superposed, and stores numbers of these scanning lines. CONSTITUTION:Detecting circuits 71-81 are provided which use the output of a level converting circuit 71, which becomes high-level only when the CRI signal exists, and the pulse output of a width 1H obtained from a decoder 64 to detect and store the presence or the absence of the CRI signal every horizontal scanning line in the 10th H-the 20th H. Consequently, the output of an OR circuit 7A which combines outputs of detecting circuits 71-81 becomes high-level only on horizontal scanning lines where the CRI signal exists. A gate pulse obtained by monostable multivibrators 7C and 7D, a flip flop 7F, etc. is gated in a gate 7K by the output of the OR circuit 7A and is applied to a sample hold circuit 4H. Thus, the device follows the fluctuation of horizontal scanning lines where a binary additional information signal is superposed.
JP14350080A 1980-10-13 1980-10-13 Signal processing device Granted JPS5765979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14350080A JPS5765979A (en) 1980-10-13 1980-10-13 Signal processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14350080A JPS5765979A (en) 1980-10-13 1980-10-13 Signal processing device

Publications (2)

Publication Number Publication Date
JPS5765979A true JPS5765979A (en) 1982-04-21
JPS6151473B2 JPS6151473B2 (en) 1986-11-08

Family

ID=15340159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14350080A Granted JPS5765979A (en) 1980-10-13 1980-10-13 Signal processing device

Country Status (1)

Country Link
JP (1) JPS5765979A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950166U (en) * 1982-09-28 1984-04-03 日本電気ホームエレクトロニクス株式会社 Teletext receiver
JPS62231576A (en) * 1986-03-31 1987-10-12 Fujitsu General Ltd Detection circuit for teletext gate signal
KR100260591B1 (en) * 1998-02-25 2000-07-01 백보현 Multiple fancy yarn twister

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950166U (en) * 1982-09-28 1984-04-03 日本電気ホームエレクトロニクス株式会社 Teletext receiver
JPS62231576A (en) * 1986-03-31 1987-10-12 Fujitsu General Ltd Detection circuit for teletext gate signal
KR100260591B1 (en) * 1998-02-25 2000-07-01 백보현 Multiple fancy yarn twister

Also Published As

Publication number Publication date
JPS6151473B2 (en) 1986-11-08

Similar Documents

Publication Publication Date Title
JPS5291331A (en) Pattern position detector
JPS5765979A (en) Signal processing device
FR2599852B1 (en) INPUT CIRCUIT FOR LOGIC ANALYZER PROBE, AND LOGIC PROBE AND ANALYZER PROVIDED WITH SUCH A CIRCUIT
JPS644875A (en) Huff converter
IT1242332B (en) DEVICE TO DETECT THE INTERSECTION OF A SIGNAL WITH A THRESHOLD VALUE.
JPS5296827A (en) Code reading circuit
JPS55143650A (en) Information input device
JPS6450122A (en) Shifter
JPS54119843A (en) Recognition unit for graphic shape
JPS5236933A (en) Pen input device
JPS54107765A (en) Object position detecting device
JPS52104910A (en) Key touch signal processing apparatus in electronic musical instrument
JPS5267919A (en) Bar code reader
JPS5223983A (en) Breakage detector
JPS5287324A (en) Key input equipment
JPS5416132A (en) Character read system
JPS5377137A (en) Card automatic set system
JPS52149439A (en) Mark sheet read-in system
JPS5367936A (en) Device for controlling door
JPS5556231A (en) Pen-touch type input device
JPS5299026A (en) Character discriminating circuit
JPS5730177A (en) Address converter
JPS52144926A (en) Line detecting system
JPS5335311A (en) Mark read type facsimile device
JPS57153383A (en) Character detecting and cutting device