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US5045946A
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Method for multi-screen operation in a picture-in-picture system
Assignee: Samsung Electronics Co Ltd
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Filing: 1989-11-21
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Granted: 1991-09-03
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Expires: 2009-11-21
Abstract
Abstract There is provided throughout this paper a method for performing multi-screen in a PIP (picture-in-picture) system having a luminance/color (Y/C) unit 14 for generating a main screen; a PIP unit 11 for generating a sub-screen; a microcomputer 10 for controlling the entire system; an input and output selector 12, 13 for selecting the image signals under the control of the microcomputer 10; a pre-amplifier 17 for providing the remote control signal in a properly amplified signal with the microcomputer 10; a first and second tuner 15, 16 for tuning desired channels; a on-screen-display (OSD) 18 for display a plurality of skip channel number thereonto; and a mixer 19 for mixing the PIP screen with the OSD screen to display on a same screen. The method allows a user to be able to configure a desired picture-in-picture screen with each designated screen number on the picture-in-picture screen by the use of a technique of the skip channel OSD.
Inventors
- 👤 Jae-Chun Yu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:36
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: 6
Claim 1
Independent Claim
123 words
A method for performing a multi-screen in a picture-in-picture system, said method comprising the steps of: (a) outputting a rotation data from a microcomputer to perform a strobe-stop, if a screen program key is pressed; (b) judging whether a channel up/down key is pressed by calling a skip channel on-screen-display of the strobe-step condition, increasing a pointer value if said channel up/down key is pressed, selecting a channel presently flickering if said key is not pressed but a rotate key is pressed, and thereby outputting the rotation data; and (c) clearing said skip channel on-screen-display if the screen program key is pressed while the rotate key is not pressed at the step (b) and outputting a strobe data to release the strobe-stop condition.
Claim 2
Independent Claim
123 words
A method for performing a multi-screen in a picture-in-picture system, said method comprising the steps of: (a) outputting a rotation data from a microcomputer to perform a strobe-stop, if a screen program key is pressed; (b) judging whether a channel up/down key is pressed by calling a skip channel on-screen-display of the strobe-step condition, increasing a pointer value if said channel up/down key is pressed, selecting a channel presently flickering if said key is not pressed but a rotate key is pressed, and thereby outputting the rotation data; and (c) clearing said skip channel on-screen-display if the screen program key is pressed while the rotate key is not pressed at the step (b) and outputting a strobe data to release the strobe-stop condition.
Claim 3
Dependent Claim
129 words
The method according to claim 1, wherein said calling step for the skip channel on-screen-display comprises the steps of: (i) outputting a row and column address data and a channel number data stored in a skip memory if the skip channel on-screen-display is called, and checking whether said row address is same with a last address; and (ii) checking whether a display-on flag is set to "one" if said row address in the first step is same with the last address, turning off a channel number on a row corresponding to a value of adding the pointer and the row address if said display is on-state, or otherwise turning on the channel number on said row address corresponding to the value of adding the pointer and the row address.
Claim 4
Dependent Claim
115 words
The method according to claim 2, wherein said step (a) comprises the steps of: (1) setting a screen mode flag to "one", judging whether a screen program key is pressed, and judging repeatedly whether said screen program key is pressed until said screen program key is detected; (2) judging whether a four picture-in-picture mode is set when the screen program key is pressed at the step (1), and outputting the rotation data to perform the strobe-stop mode if the four picture-in-picture mode is set; and (3) outputting a corresponding four picture-in-picture data if the four picture-in-picture mode is not set at the step (2), and thereby outputting the rotation data to perform the strobe-stop mode.
Claim 5
Dependent Claim
103 words
The method according to claim 3, wherein said step (b) comprises the steps of: ○a calling the skip channel on-screen-display at the strobe-stop mode and judging whether the channel up/down key is pressed; ○b increasing the pointer value if the channel up/down key is pressed at the step ○a and re-calling the skip channel on-screen-display; and ○c judging whether the rotate key is pressed if the channel up/down key is not pressed at the step ○a , selecting a corresponding channel which is presently flickering if the rotate key is pressed, thereby outputting the rotation data, and then re-calling the skip channel on-screen-display.
Claim 6
Dependent Claim
84 words
The method according to claim 4, wherein said step (c) comprises: a first step for judging whether the screen program key is pressed if the rotate key is not pressed, and re-executing said step (b) if the screen program key is not pressed; a second step for clearing the skip channel on-screen-display if the screen program key is pressed at the first step; and a third step for outputting the strobe data to release the strobe-stop mode and setting the screen mode to "zero".
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |