WO1994030011A3 - Filter by-pass for transmitting an additional signal with a video signal - Google Patents

Filter by-pass for transmitting an additional signal with a video signal Download PDF

Info

Publication number
WO1994030011A3
WO1994030011A3 PCT/US1994/006627 US9406627W WO9430011A3 WO 1994030011 A3 WO1994030011 A3 WO 1994030011A3 US 9406627 W US9406627 W US 9406627W WO 9430011 A3 WO9430011 A3 WO 9430011A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
video signal
filter
transmitting
pass
Prior art date
Application number
PCT/US1994/006627
Other languages
French (fr)
Other versions
WO1994030011A2 (en
Inventor
Gerald D Montgomery
Original Assignee
Wavephore Inc
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 Wavephore Inc filed Critical Wavephore Inc
Priority to EP94920725A priority Critical patent/EP0705518A1/en
Priority to KR1019950705657A priority patent/KR960703306A/en
Priority to AU71723/94A priority patent/AU7172394A/en
Priority to JP7502148A priority patent/JPH08511669A/en
Priority to BR9406817A priority patent/BR9406817A/en
Publication of WO1994030011A2 publication Critical patent/WO1994030011A2/en
Publication of WO1994030011A3 publication Critical patent/WO1994030011A3/en
Priority to FI955972A priority patent/FI955972A/en

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
    • H04N7/081—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 the additional information signals being transmitted by means of a subcarrier
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Picture Signal Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

A controlled element (27) for spectrum attenuation or a controlled filter is disclosed that is used to aid in the insertion of a secondary signal into a video signal without distorting the blanking intervals or close captioned data contained in the blanking interval of the video signal.
PCT/US1994/006627 1993-06-14 1994-06-10 Filter by-pass for transmitting an additional signal with a video signal WO1994030011A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP94920725A EP0705518A1 (en) 1993-06-14 1994-06-10 Filter by-pass for transmitting an additional signal with a video signal
KR1019950705657A KR960703306A (en) 1993-06-14 1994-06-10 FILTER BY-PASS FOR TRANSMITTING AN ADDITIONAL SIGNAL WITH A VIDEO SIGNAL
AU71723/94A AU7172394A (en) 1993-06-14 1994-06-10 Filter by-pass for transmitting an additional signal with a video signal
JP7502148A JPH08511669A (en) 1993-06-14 1994-06-10 Filter bypass for transmitting video signals along with other signals
BR9406817A BR9406817A (en) 1993-06-14 1994-06-10 Bypass filter for transmitting an additional signal with a video signal
FI955972A FI955972A (en) 1993-06-14 1995-12-13 Filter by-pass for transmitting an additional signal with a video signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7588893A 1993-06-14 1993-06-14
US08/075,888 1993-06-14

Publications (2)

Publication Number Publication Date
WO1994030011A2 WO1994030011A2 (en) 1994-12-22
WO1994030011A3 true WO1994030011A3 (en) 1994-12-22

Family

ID=22128582

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/006627 WO1994030011A2 (en) 1993-06-14 1994-06-10 Filter by-pass for transmitting an additional signal with a video signal

Country Status (9)

Country Link
EP (1) EP0705518A1 (en)
JP (1) JPH08511669A (en)
KR (1) KR960703306A (en)
CN (1) CN1125501A (en)
AU (1) AU7172394A (en)
BR (1) BR9406817A (en)
CA (1) CA2164830A1 (en)
FI (1) FI955972A (en)
WO (1) WO1994030011A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100716290B1 (en) 2005-07-04 2007-05-09 삼성전자주식회사 Video processing apparatus, ancillary information processing apparatus and video processing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992022984A1 (en) * 1991-06-14 1992-12-23 Wavephore, Inc. Transmitting data with a video signal
EP0530669A2 (en) * 1991-09-06 1993-03-10 Nippon Television Network Corporation Encoder/decoder for information signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992022984A1 (en) * 1991-06-14 1992-12-23 Wavephore, Inc. Transmitting data with a video signal
EP0530669A2 (en) * 1991-09-06 1993-03-10 Nippon Television Network Corporation Encoder/decoder for information signal

Also Published As

Publication number Publication date
KR960703306A (en) 1996-06-19
EP0705518A1 (en) 1996-04-10
WO1994030011A2 (en) 1994-12-22
FI955972A (en) 1996-02-08
CA2164830A1 (en) 1994-12-22
BR9406817A (en) 1996-07-23
JPH08511669A (en) 1996-12-03
FI955972A0 (en) 1995-12-13
AU7172394A (en) 1995-01-03
CN1125501A (en) 1996-06-26

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