Patent US787758A successfully refreshed from Google Patents.
Patent EP0258803A2 successfully refreshed from Google Patents.
EP0258803A2
Expired / Lapsed
EP
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Improved television receiver
Assignee: SELECO SpA
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Filing: 1987-08-26
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Granted: —
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Expires: 2007-08-26
Abstract
Abstract An improved television receiver is described, providing a screen for reproducing pictures and a device comprising first circuit means in order to insert into a first picture, reproduced on the screen, corresponding to a first television signal coming from a trasmitting station and/or from an auxiliary source, a second picture, having a size smaller than the first one, corresponding to a second television signal coming from a second transmitting station and/or from an auxiliary source, comprising second circuit means in order to enlarge the contents of said second picture and third circuit means in order to change the position of said second picture in respect of the first one.
Inventors
- 👤 Alessandro Carniel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 21:25
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/445; H04N5/45; H04N5/222; H04N5/262; H04N5/2624
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
88 words
Improved television receiver, providing a screen for reproducing pictures and a device comprising first circuit means in order to insert into a first picture, reproduced on the screen, corresponding to a first television signal coming from a transmitting station and/or from an auxiliary source, a second picture, having a size smaller than the first one, corresponding to a second television signal coming from a second transmitting station and/or from an auxiliary source, characterized by second circuit means (7,8,9,10) in order to enlarge the contents of said second picture.
Claim 2
Dependent Claim
88 words
Improved television receiver, providing a screen for reproducing pictures and a device comprising first circuit means in order to insert into a first picture, reproduced on the screen, corresponding to a first television signal coming from a transmitting station and/or from an auxiliary source, a second picture, having a size smaller than the first one, corresponding to a second television signal coming from a second transmitting station and/or from an auxiliary source, characterized by second circuit means (7,8,9,10) in order to enlarge the contents of said second picture.
Claim 3
Dependent Claim
30 words
Improved television receiver, according to claim 1, characterized by the fact that said second means (7,8,9,10) allow to enlarge the size of said second picture, while keeping the contents unchanged.
Claim 4
Dependent Claim
34 words
Improved television receiver, according to claim 1, characterized by the fact that said second means allow to vary the enlargement of the contents of said second picture, while keeping the size of it unchanged.
Claim 5
Dependent Claim
39 words
Improved television receiver, according to any one of the preceding claims, characterized by the fact that there are provided third circuit means (5,18) in order to vary the position of said second picture in respect of the first one.
Claim 6
Dependent Claim
25 words
Improved television receiver, according to any one of the preceding claims, characterized by the fact that there is provided a variable frequency clock oscillator (8).
Claim 7
Dependent Claim
53 words
Improved television receiver, according to any one of the preceding claims, characterized by the fact that it comprises a triplet of A. to D. converters (6), a digital memory (11) and a triplet of D. to A. converters (13), in order to digitalize, store and obtain again in analog form the second picture.
Claim 8
Dependent Claim
39 words
Improved television receiver, according to claim 6, characterized by the fact that it comprises a wired logic circuit (5) in order to combine, starting from sync, clock and position data, the enabling signals for the said digital memory (11).
Claim 9
Dependent Claim
48 words
Improved television receiver, according to claims 5 and 6, characterized by the fact that it comprises a fixed frequency clock generator (3) which is used to write in the memory (11), while the variable frequency clock (8) is used to read the data out of the memory (11).
Claim 10
Dependent Claim
31 words
Improved television receiver, according to claim 6, characterized by the fact that it comprises two counters (4,9) and a multiplexer (10) in order to generate the addresses for the memory (11).
Claim 11
Dependent Claim
30 words
Improved television receiver, according to claim 9, characterized by the fact that there is provided a device apt to vary the count of one (9) out of the two counters.
Claim 12
Dependent Claim
39 words
Improved television receiver, according to claim 6, characterized by the fact that there is provided a control device in order to stop the digitalization of the secondary picture, while keeping it displayed on the screen as a still picture.
Claim 13
Dependent Claim
45 words
Improved television receiver, according to claim 5, characterized by the fact that there is provided a terminal (7) on which there is available a variable control voltage apt to control the variable frequency oscillator (8) and, as a consequence, the enlargement of the second picture.
Claim 14
Dependent Claim
42 words
Improved television receiver, according to claim 6, characterized by the fact that to said digital memory (11) there is sent a digital signal obtained starting from a video signal, and dividing it in its luminance (U) and colour difference (R-Y, B-Y) components.
References Cited (Backward Citations)
No citation records indexed.
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