Patent EP0400745A1 successfully refreshed from Google Patents.
EP0400745A1
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EP
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Combination of a video tuner, a video signal reproducing arrangement and a picture display unit
Assignee: Koninklijke Philips NV
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Filing: 1990-05-25
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Granted: —
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Expires: 2010-05-25
Abstract
Abstract A combination of a video tuner (1), a video signal (recording and) reproducing arrangement (7) and a picture display unit (35) are coupled to each other via switching means (9). The video tuner (1) can supply first and second video signals on its output (3), representing pictures having a first and a second aspect ratio respectively (4:3 and 16:9 respectively). These signals can be recorded and reproduced by means of the recording and reproducing arrangement (7) and can be displayed with the correct aspect ratio by means of the picture display unit (35). In order to realise this a control signal line (55) is arranged between the control signal output (4) of the tuner (1), the control signal input and output terminal (10) of the arrangement (7), and the control signal inputs (36) of the picture display unit and (46) of the switching means (9, 45). The video tuner (1) produces a first or a second control signal (S1 and S2) on the output (4) depending on the aspect ratio of the pictures in the supplied video signal. The arrangement (7) produces a third or a fourth control signal on the terminal (10) depending on the aspect ratio of the pictures in the video signal being reproduced. The switching means (9, 45) can select between the control signals in such a way that if the first or the second control signal is applied, the output signal of the video tuner (1) is selected, and if the third or the fourth control signal is applied, the output signal of the arrangement (7) is transferred to the picture display unit (35). The picture display unit (35) can select between the control signals in such a way that video signals applied to the input (37) are displayed with the correct aspect ratio on the display screen (39). Instead of a video signal recording and reproducing arrangement the combination may comprise a video signal reproducing arrangement.
Inventors
- 👤 Richard Cees Spiero
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 06:01
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/02; H; H04; H04N; H04N5/00; H04N5/76; H04N5/765; H04N5/775
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
554 words
A combination of a video tuner, a video signal reproducing arrangement and a picture display unit, the video tuner having a first output for supplying a video signal, the reproducing arrangement being constructed to read a video signal from a record carrier and to supply the video signal thus read to a first output, and the picture display unit having a first input for receiving a video signal, the combination further comprising switching means having a first signal input coupled to the first output of the video tuner, a second signal input coupled to the first output of the reproducing arrangement, having a signal output coupled to the first input of the picture display unit, and a control signal input, the switching means being constructed to establish a coupling between the first signal input and the signal output or between the second signal input and the signal output depending on a control signal applied to the control signal input, characterized in that the video tuner is adapted to supply a first video signal representing pictures having a first aspect ratio, or a second video signal representing pictures having a second aspect ratio, to the first output, in that the video tuner further comprises a second output for supplying a first or a second control signal depending on whether the video signal to be supplied by the video tuner is a first or a second video signal, in that the reproducing arrangement is adapted to read a first or the second video signal from the record carrier and to supply the video signal thus read to the first output, in that the reproducing arrangement further comprises a second output for supplying a third or a fourth control signal depending on whether the video signal to be supplied by the arrangement is the first or the second video signal, in that the reproducing arrangement is further adapted to read from the record carrier a first or a second auxiliary signal which is characteristic of the first or the second video signal recorded on the record carrier and, under the influence of the auxiliary signal thus read, to derive the third or the fourth control signal and to supply the control signal to the second output, in that the second output of the video tuner and the second output of the reproducing arrangement are coupled both to the control signal input of the switching means and to a second input of the picture display unit, in that the switching means are adapted to establish a coupling between the first signal input and the signal output when the first or the second control signal is applied to the control signal input, and to establish a coupling between the second signal input and the signal output when the third or the fourth control signal is applied to the control signal input, and in that the picture display unit is adapted to display the first video signal applied to its first input with the first aspect ratio on a display screen upon reception of the first or the third control signal applied to its second input and is adapted to display the second video signal applied to its first input with the second aspect ratio upon reception of the second or the fourth control signal applied to its second input.
Claim 2
Dependent Claim
554 words
A combination of a video tuner, a video signal reproducing arrangement and a picture display unit, the video tuner having a first output for supplying a video signal, the reproducing arrangement being constructed to read a video signal from a record carrier and to supply the video signal thus read to a first output, and the picture display unit having a first input for receiving a video signal, the combination further comprising switching means having a first signal input coupled to the first output of the video tuner, a second signal input coupled to the first output of the reproducing arrangement, having a signal output coupled to the first input of the picture display unit, and a control signal input, the switching means being constructed to establish a coupling between the first signal input and the signal output or between the second signal input and the signal output depending on a control signal applied to the control signal input, characterized in that the video tuner is adapted to supply a first video signal representing pictures having a first aspect ratio, or a second video signal representing pictures having a second aspect ratio, to the first output, in that the video tuner further comprises a second output for supplying a first or a second control signal depending on whether the video signal to be supplied by the video tuner is a first or a second video signal, in that the reproducing arrangement is adapted to read a first or the second video signal from the record carrier and to supply the video signal thus read to the first output, in that the reproducing arrangement further comprises a second output for supplying a third or a fourth control signal depending on whether the video signal to be supplied by the arrangement is the first or the second video signal, in that the reproducing arrangement is further adapted to read from the record carrier a first or a second auxiliary signal which is characteristic of the first or the second video signal recorded on the record carrier and, under the influence of the auxiliary signal thus read, to derive the third or the fourth control signal and to supply the control signal to the second output, in that the second output of the video tuner and the second output of the reproducing arrangement are coupled both to the control signal input of the switching means and to a second input of the picture display unit, in that the switching means are adapted to establish a coupling between the first signal input and the signal output when the first or the second control signal is applied to the control signal input, and to establish a coupling between the second signal input and the signal output when the third or the fourth control signal is applied to the control signal input, and in that the picture display unit is adapted to display the first video signal applied to its first input with the first aspect ratio on a display screen upon reception of the first or the third control signal applied to its second input and is adapted to display the second video signal applied to its first input with the second aspect ratio upon reception of the second or the fourth control signal applied to its second input.
Claim 3
Dependent Claim
157 words
A combination as claimed in Claim 1, the video signal reproducing arrangement is a video signal recording and reproducing arrangement having a first input for receiving a video signal, which input is coupled to the first output of the video tuner, characterized in that the recording and reproducing arrangement is adapted to record the first or the second video signal applied to its first input on the record carrier and has a second input for receiving the first or the second control signal, which second input is coupled to the second output of the video tuner, in that the recording and reproducing arrangement is further adapted to record the first or the second auxiliary signal on the record carrier depending on the first or the second control signal applied to the second input, and in that the second output and the second input of the recording and reproducing arrangement are combined to form a single input-output terminal.
Claim 4
Dependent Claim
178 words
A combination as claimed in Claim 1 or 2, characterized in that the switching means further comprise a generator unit having an input coupled to the second output of the video tuner and to the second output of the reproducing arrangement and having an output coupled to the control-signal input of the switching means, in that the switching means and the generator unit are constructed in such a way that, when the first or the second control signal is applied to the input of the generator unit, said generator unit supplies such a control signal to the control signal input of the switching means that the switching means establish a coupling between their first signal input and their signal output and are constructed in such a way that, when the third or the fourth control signal is applied to the input of the generator unit, said generator unit supplies such a control signal to the control signal input of the switching means that the switching means establish a coupling between their second signal input and their signal output.
Claim 5
Dependent Claim
167 words
A combination as claimed in Claim 1, 2 or 3, characterized in that the picture display unit further comprises a generator unit having an input coupled to the second output of the video tuner and to the second output of the reproducing arrangement, and having an output coupled to the second input of the picture display unit, in that the generator unit is responsive to the first or the third control signal applied to its input to supply such a control signal to the second input of the picture display unit that the picture display unit is adapted to display the first video signal with the first aspect ratio on the display screen and the generator unit is responsive to the second or the fourth control signal applied to its input to supply such a control signal to the second input of the picture display unit that the picture display unit adapted to display the second video signal with the second aspect ratio on the display screen.
Claim 6
Dependent Claim
86 words
A combination as claimed in any one of the preceding Claims, characterized in that the reproducing arrangement comprises a control signal generator having an input and an output, in that during reproduction the control signal generator is responsive to the first or the second auxiliary signal read from the record carrier and applied to its input to generate the third or the fourth control signal respectively, and in that the output of the control signal generator is then coupled to the second output of the arrangement.
Claim 7
Dependent Claim
58 words
A combination as claimed in any one of the preceding Claims, characterized in that the first, the second, the third and the fourth control signal are direct voltage signals whose d.c. values are situated in a first, a second, a third and a fourth direct voltage range respectively, which four direct voltage ranges do not overlap one another.
Claim 8
Dependent Claim
17 words
A reproducing arrangement for use in the combination as claimed in any one of the preceding Claims.
Claim 9
Dependent Claim
28 words
A recording and reproducing arrangement for use in a combination as claimed in any one of the Claims 2 or 3 to 6 where appendant to Claim 2.
Claim 10
Dependent Claim
92 words
A recording and reproducing arrangement as claimed in Claim 8, characterized in that the input-output terminal is coupled to an input of a converter unit, and in that during recording the converter unit is responsive to the first or the third control signal received on its output to record the first auxiliary signal on the record carrier and is responsive to the second or the fourth control signal received on its input to record the second auxiliary signal on the record carrier.second or the fourth control signal is received on its input.
Claim 11
Dependent Claim
20 words
A picture display unit for use in a combination as claimed in any one of the Claims 1 to 6.
Claim 12
Dependent Claim
135 words
A television set comprising the video tuner, the picture display unit and the switching means of the combination as claimed in any one of the Claims 1 to 6, characterized in that the television set comprises a first and a second input terminal and a first and a second output terminal, in that the first output of the video tuner is coupled to the first output terminal, the first input terminal is coupled to the second input of the switching means, in that the second output terminal of the video tuner is coupled to the second output terminal, in that the second input terminal is coupled to the second input of the picture display unit, and in that the second output terminal and the second input terminal are combined to form a single input-output terminal.
References Cited (Backward Citations)
US4031548A
Cited
FR2613163A1
Cited
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