EP0377334B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Picture-in-picture systems
Assignee: Samsung Electronics Co Ltd
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Filing: 1989-12-29
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Granted: 1995-06-21
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Expires: 2009-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jae-Chun Yu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:14
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/445; H04N5/45; H04N21/00; H04N21/40; H04N21/41; H04N21/426; H04N21/42607; H04N21/4263; H04N21/43; H04N21/431; H04N21/4312; H04N21/4316; H04N21/44; H04N21/4402; H04N21/440263; H04N21/47; H04N21/482; H04N21/80; H04N21/81; H04N21/8146; H04N21/8153
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
188 words
A video display system comprising: a microcomputer (10) for controlling the system; a pre-amplifier (17) for receiving and amplifying a remote control signal and outputting the amplified signal to the microcomputer (10) to control functions thereof; first and second tuners (15,16) for tuning desired channels; first and second input selectors (12,13) for receiving signals from said first and second tuners (15,16) and selecting image signals under the control of the microcomputer (10); a luminance/colour (Y/C) unit (14) and picture-in-picture (PIP) unit (11) for receiving signals from said input selectors (12,13) and generating respectively a main screen and a plurality of sub-screens; an on-screen display (OSD) unit (18) for displaying channel numbers of channels that are available for broadcasting; and a mixer (19) for mixing a PIP screen from the PIP unit (11) with an OSD screen from the OSD unit (18), to display simultaneously on the same screen a plurality of sub-screens together with a visual display of a channel number: wherein said microcomputer (10) is arranged to change the channel of a selected one of the sub-screens to a channel number displayed by the OSD unit (18).
Claim 2
Dependent Claim
188 words
A video display system comprising: a microcomputer (10) for controlling the system; a pre-amplifier (17) for receiving and amplifying a remote control signal and outputting the amplified signal to the microcomputer (10) to control functions thereof; first and second tuners (15,16) for tuning desired channels; first and second input selectors (12,13) for receiving signals from said first and second tuners (15,16) and selecting image signals under the control of the microcomputer (10); a luminance/colour (Y/C) unit (14) and picture-in-picture (PIP) unit (11) for receiving signals from said input selectors (12,13) and generating respectively a main screen and a plurality of sub-screens; an on-screen display (OSD) unit (18) for displaying channel numbers of channels that are available for broadcasting; and a mixer (19) for mixing a PIP screen from the PIP unit (11) with an OSD screen from the OSD unit (18), to display simultaneously on the same screen a plurality of sub-screens together with a visual display of a channel number: wherein said microcomputer (10) is arranged to change the channel of a selected one of the sub-screens to a channel number displayed by the OSD unit (18).
Claim 3
Dependent Claim
56 words
A system according to claim 1, wherein the OSD unit (18) is arranged to display simultaneously the channel numbers of a plurality of different channels that are available for broadcasting, and the microcomputer (10) is arranged to display one of said channel numbers in such a manner as to distinguish it from the other channel numbers.
Claim 4
Dependent Claim
29 words
A system according to claim 2, wherein said microcomputer (10) is arranged to display said one of said channel numbers by causing said channel number to flash or flicker.
Claim 5
Dependent Claim
40 words
A system according to claim 2 or 3, wherein said microcomputer (10) is arranged to receive a channel UP/DOWN signal and, in response thereto, cause said plurality of channel numbers and/or said one of said channel numbers to be varied.
Claim 6
Independent Claim
26 words
A system according to any of the preceding claims, wherein a portion of said main screen is visible simultaneously with said sub-screens, on the same screen.
Claim 7
Independent Claim
32 words
A system according to any of the preceding claims, wherein a line input (L) is provided to said input selectors (12,13) in addition to signals from said first and second tuners (15,16).
Claim 8
Independent Claim
36 words
A system according to any of the preceding claims, wherein said microcomputer (10) is arranged to receive a SCREEN PROGRAM signal and, in response thereto, cause said system to be in or out of PIP mode.
Claim 9
Independent Claim
82 words
A system according to any of the preceding claims, wherein said microcomputer (10) is arranged to receive a ROTATE signal and, in response thereto, cause an image from the channel of a selected one of the channel numbers to be displayed, such that, in response to successive ROTATE signals, different images from different channels corresponding to different selected ones of said channel numbers may be displayed successively in different ones of said sub-screens, with said sub-screens then displaying said different images simultaneously.
Claim 10
Independent Claim
34 words
A system according to any of the preceding claims, wherein said microcomputer (10) is arranged to display at least one moving image and a plurality of still images in different ones of said sub-screens.
Claim 11
Independent Claim
29 words
A system according to any of the preceding claims, further comprising a visual display means for displaying a visual image corresponding to a signal output from said mixer (19).
Claim 12
Dependent Claim
121 words
Use of a system according to any of the preceding claims to provide a visual display, by : (a) outputting rotation data from the microcomputer (10) to perform a strobe-stop, upon receipt of a SCREEN PROGRAM signal; (b) checking whether a channel UP/DOWN signal is received by calling said on-screen-display in the strobe-step condition, increasing a pointer value if said channel UP/DOWN signal is received, selecting a presently displayed channel if said UP/DOWN signal is not received but said ROTATE signal is received, and thereupon outputting the rotation data; and (c) clearing said on-screen-display if the SCREEN PROGRAM signal is received while the ROTATE signal is not received at the step (b) and outputting strobe data to release the strobe-stop condition.
Claim 13
Dependent Claim
135 words
Use of a system to provide a visual display according to claim 11, wherein said on-screen-display is called by the steps of: (i) outputting row and column address data and channel number data stored in a channel memory if the on-screen-display is called, and checking whether said row address is the same as a last address; and (ii) checking whether a display-on flag is set to "1" if said row address in step (i) is the same as the last address, turning off a channel number on a row corresponding to a value of the sum of the pointer and the row address if said display is in an ON-state, or otherwise turning on the channel number on said row address corresponding to the value of the sum of the pointer and the row address.
Claim 14
Dependent Claim
121 words
Use of a system to provide a visual display according to claim 11 or 12, wherein said step (a) comprises the sub-steps of: (a1) setting a screen mode flag to "1", checking whether said SCREEN PROGRAM signal is received, and checking repeatedly whether said SCREEN PROGRAM signal is received until said SCREEN PROGRAM signal is detected; (a2) checking whether a four picture-in-picture mode is set when the SCREEN PROGRAM signal is received at step (a1), and outputting the rotation data to perform the strobe-stop mode if the four picture-in-picture mode is set; and (a3) outputting corresponding four picture-in-picture data if the four picture-in-picture mode is not set at step (a2), and thereupon outputting the rotation data to perform the strobe-stop mode.
Claim 15
Dependent Claim
106 words
Use of a system to provide a visual display according to claim 11, 12 or 13, wherein the step (b) comprises the sub-steps of: (b1) calling the on-screen-display at the strobe-stop mode and checking whether the channel UP/DOWN signal is received; (b2) increasing the pointer value if the channel UP/DOWN signal is received at the step (b1) and re-calling the on-screen-display; and (b3) checking whether the ROTATE signal is received if the channel UP/DOWN signal is not received at the step (b1), selecting a corresponding channel which is presently flickering if the ROTATE signal is received, thereupon outputting the rotation data, and then re-calling the on-screen-display.
Claim 16
Dependent Claim
87 words
Use of a system to provide a visual display according to claim 11, 12, 13 or 14, wherein the step (c) comprises the sub-steps of: (c1) checking whether the SCREEN PROGRAM signal is received if the ROTATE signal is not received, and re-executing the step (b) if the SCREEN PROGRAM signal is not received; (c2) clearing the on-screen-display if the SCREEN PROGRAM signal is received at the sub-step (c1); and (c3) outputting the strobe data to release the strobe-stop mode and setting the screen mode to "zero".
References Cited (Backward Citations)
No citation records indexed.
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