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EP0444496A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Video signal processing Apparatus

Assignee: Hitachi Ltd
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Filing: 1991-02-18
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Granted: —
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Expires: 2011-02-18
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Abstract

Abstract In a video signal processing apparatus, a first or a second video signal having program content information inserted therein is selected. Upon selection of the second signal, the program content information is read from the first video signal and a character signal associated with the program content information is generated and superposed on the selected second video signal. As a result, when the second video signal is supplied to a monitor and an image displayed, a character associated with the character signal is displayed in a part of the particular image which represents that the program content of the first video signal is broadcast by the first video signal. The content of the program which is broadcast by the first video signal is thus determined without interrupting the reception of an image associated with the second video signal.

Inventors

  • 👤 Eiji Moro
  • 👤 Yoshio Yamada
  • 👤 Koei Usuda

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 07:47
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/40; H04N21/47; H04N21/485; H04N21/41; H04N21/422; H04N21/42204; H04N21/43; H04N21/431; H04N21/4312; H04N21/4316; H04N21/482; H04N5/00; H04N5/44; H04N5/50

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 151 words
A video signal processing apparatus comprising first means (1, 2, 3, 4, 5) for receiving a video signal having inserted therein the program content information representing the content of a program being broadcast, second means (17) for reading the particular program content information from said first video signal, third means (6, 7, 8) for receiving a second video signal, fourth means (10, 11, 16) for selecting one of the first and the second video signal, and fifth means (18) for generating and superposing character information on the second video signal selected by the fourth means, wherein when the fourth means selects the second video signal and the second means has read the program content information from the first video signal, the fifth means generates character information representing the content of the program associated with the program content information thus read and superposes the particular character information on the second video signal.
Claim 2
Dependent Claim 90 words
A video signal processing apparatus according to Claim 1, wherein said first video signal has a plurality of channels capable of being broadcast simultaneously, and when the fourth means selects the second video signal, the first means receives each of the signals having a plurality of channels sequentially for a predetermined time thereby to read the program content information from the signal having a plurality of channels, the fifth means superposing the character information representing the program content associated with the program information thus read on the second video signal.
Claim 3
Dependent Claim 48 words
A video signal processing apparatus according to Claim 1, further comprising means for setting key words for the program content information, and means for designating a key word, wherein the second means searches the first video signal containing the program content information associated with a designated key word.
Claim 4
Dependent Claim 47 words
A video signal processing apparatus according to Claim 2, further comprising means for setting key words for the program content information, and means for designating a key word, wherein the second means searches the first video signal containing the program content information associated with a designated keyword.
Claim 5
Dependent Claim 33 words
A video signal processing apparatus according to Claim 3, wherein the fifth means superposes the character information of the program content information associated with the designated key word on the second video signal.
Claim 6
Dependent Claim 32 words
A video signal processor according to Claim 4, wherein the fifth means superposes the character information associated with the program content information of a designated key word on the second video signal.

References Cited (Backward Citations)

US4186413A Cited
US4729028A Cited
US4774582A Cited
EP0261893A2 Cited

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