EP0103315A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Television receiver comprising a circuit for sequentially tuning the receiver to different frequencies
Assignee: Koninklijke Philips NV
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Filing: 1983-07-29
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Granted: —
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Expires: 2003-07-29
Abstract
Abstract In a television receiver, comprising a tuning portion (1) which operates in time-division multiplex and a first memory circuit (41) for storing sub-picture information from different transmissions obtained during a tuning cycle, a second memory circuit (57) is provided for acquiring the sub-picture information from the first memory circuit (41) in one single operation and for displaying (at 65) during a next tuning cycle a composite picture in which no change of picture content occurs.
Inventors
- 👤 Marcellinus J.J.C. Annegarn
- 👤 Petrus W. G. Welles
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/445; H04N5/45; H04N5/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
143 words
A television receiver comprising a circuit for sequentially tuning the receiver to different frequencies and displaying a composite picture comprising a group of sub-pictures which correspond to pictures transmitted by transmitters received at the said different frequencies, the receiver comprising a memory circuit for storing sub-picture information, characterized in that the receiver comprises a second memory circuit (57) which is capable of being coupled to the first-mentioned memory circuit (41) for aquiring from the first-mentioned memory circuit the sub-picture information from a group of transmissions, which sub-picture information is obtained during the sequential tuning operation, and for displaying the group of sub-pictures associated with the group of transmissions in such a way from the second memory circuit that with a further sequential tuning of the receiver to different frequencies these groups of sub-pictures in a composite picture can simultaneously change their picture content.
Claim 2
Dependent Claim
143 words
A television receiver comprising a circuit for sequentially tuning the receiver to different frequencies and displaying a composite picture comprising a group of sub-pictures which correspond to pictures transmitted by transmitters received at the said different frequencies, the receiver comprising a memory circuit for storing sub-picture information, characterized in that the receiver comprises a second memory circuit (57) which is capable of being coupled to the first-mentioned memory circuit (41) for aquiring from the first-mentioned memory circuit the sub-picture information from a group of transmissions, which sub-picture information is obtained during the sequential tuning operation, and for displaying the group of sub-pictures associated with the group of transmissions in such a way from the second memory circuit that with a further sequential tuning of the receiver to different frequencies these groups of sub-pictures in a composite picture can simultaneously change their picture content.
Claim 3
Dependent Claim
104 words
A television receiver as claimed in Claim 1, characterized in that it comprises a first counting circuit (27) which is synchronizable with a received signal and is controlled by a first pulse generator (25), a second counting circuit (33) which is synchronized with the first memory circuit (41) and a third counting circuit (49) which is synchronized with a picture display device (65) and controlled by a second pulse generator (53), the second counting circuit (33) being suitable for coupling to the first (27) or the third (49) counting circuit or to a third pulse generator (81) by means of a change-over circuit (37).
References Cited (Backward Citations)
US4259690A
Cited
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