CN101742127A - Method for controlling key mixing automatic circular demonstration and PGM/PST synchronous output - Google Patents
Method for controlling key mixing automatic circular demonstration and PGM/PST synchronous output Download PDFInfo
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- CN101742127A CN101742127A CN200910187998A CN200910187998A CN101742127A CN 101742127 A CN101742127 A CN 101742127A CN 200910187998 A CN200910187998 A CN 200910187998A CN 200910187998 A CN200910187998 A CN 200910187998A CN 101742127 A CN101742127 A CN 101742127A
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Abstract
The invention discloses a method for controlling a key mixing automatic circular demonstration and a PGM/PST synchronous output, which comprises the following detail steps: (1) initializing image signals and key signals, setting an initial position, synchronizing the image signals and the key signals, setting a coefficient value of a counter in a multiplying unit, and setting a clock parameter at the same time, wherein the key filling signals comprise a KEY signal and a filling signal; (2) inputting the KEY signal of the key filling signals into the multiplying unit, and multiplying the KEY signal by the coefficient value of the counter in the multiplying unit set by the step (1) to obtain a signal A; and (3) inputting the filling signal of the key filling signals into the multiplying unit, summarizing the filling signal and the signal A obtained by the step (2) to obtain a summarized signal B, and adding a keyed-in and keyed-out effect between a preview channel and an input channel to as to achieve the preview effect.
Description
Technical field
The present invention goes up at comprehensive video/audio signal processing platform-PANDORA (Pandora) and realizes.The pre-prison of perfect information when being a kind of brand-new adding station symbol or caption information and the control method of output synchronously.The realization of this method is based on the multichannel key and mixes functional module, can be on PST (pre-prison) output channel the Automatic Cycle demonstration go out passage by key entry, the key of user's pre-selected, corresponding key entry, key go out pattern, key effects such as speed.The user is had gained some understanding to the effect after broadcasting the key signals that adds preliminary election on the passage, and to keying in passage, key entry pattern, speed is selected, after the effect of waiting to reach satisfied, press acknowledgement key, this road key signals just keys in selected pattern and speed or key goes out to broadcasting on the passage (PGM).
Background technology
In field of broadcast televisions, often on video image, add the station symbol of access customer (TV station) appointment, captions or other graph text information, what realize this function is exactly the key mixing device.Correct for the graph text information that guarantee to add, it now need be added on the pre-prison passage, treats to be added to again after suitable and broadcast on the passage, and the key signals that superposes on pre-prison passage only shows final key entry result, and demonstration that can not be complete to key in the pattern that key goes out (as: be to be fade-in fade-out, fade in to go out soon, go into to fade out soon, go into soon soon go out) and key in the speed that key goes out, can not supervise more that to go out in the process picture number abnormal keying in key, therefore in keying in the operation that key goes out, have the potential safety hazard of broadcasting.
Summary of the invention
The present invention is directed to above-mentioned present situation, provide a kind of based on FPGA inside Automatic Cycle control timing, on pre-prison passage the key entry key of user's preliminary election being gone out signal and pattern and speed thereof previews in the mode of Automatic Cycle, the user can not only be supervised key in the result that key goes out, can also comprehensively supervise the process that key goes out of keying in.
Concrete steps of the present invention are as follows:
(1) initialisation image signal and key signals are set original position, and picture signal and key filling signal is synchronous; Set the coefficient value of multiple multiplication device inside counting device, set timing parameter simultaneously;
Described key filling signal comprises KEY signal and filling signal;
(2) the KEY signal in the key filling signal is input in the multiple multiplication device, the coefficient value of the multiple multiplication device inside counting device of setting in KEY signal and the above-mentioned steps (1) multiplies each other, and obtains signal A;
(3) filling signal in the key filling signal is input in the multiple multiplication device, the a-signal that filling signal and above-mentioned steps (2) obtain adds up, and obtains cumulative signal B;
(4) finish adding up of multiple signals according to obtaining in the step (3) in the cumulative signal B input multi-channel gating device, obtain one-level key filling signal after adding up;
(5) the one-level key filling signal that obtains in the above-mentioned steps (4) is sent into pre-prison passage (PST), carry out the effect preview, and send output signal back to step (4);
(6) observation key entry, key go out effect in pre-prison passage (PST):
1. when effect satisfies effect requirements, supervise passage (PST) in advance the one-level key filling signal that obtains in the above-mentioned steps (4) is sent into the broadcast passage;
2. satisfy current requirement when one-level key filling effect, but when not reaching final effect, the one-level key filling signal that obtains in the above-mentioned steps (4) is returned in the step (2);
3. when the satisfied broadcast of pre-prison effect requires, stop current key entry key and go out effect.
The present invention adopts above step, and the beneficial effect that it reached is as follows:
1, in the middle of pre-prison passage and input channel, adds the key entry key and go out effect, but reach the effect of preview;
2, finish the speed that key entry, key go out according to setting, gram is watched as requested and is keyed in the speed that key goes out in pre-prison passage, reaches requirements of different users;
3, adopt the pattern of playing in pre-prison channel cycle, allow the user can weigh and consider setting, and in consideration, different effects is confirmed to confirm with filling process;
4, the present invention is simple and convenient in the use, practical;
5, algorithm of the present invention is simple, realizes simple and clear in actual production.
Description of drawings
Fig. 1 is an initialization information;
Fig. 2 is a FB(flow block);
Embodiment
Initialization as shown in Figure 1, by the numerical value video standard of stipulating among the CCIR656, the Phase Alternation Line system per second scans 25 two field pictures, every two field picture has 625 scan lines, and the term of validity of every row comprises 720 pixels, and promptly 1440 and sampled point, row in wherein every two field picture,, the initial sum of frame stops sign;
A kind of key as described in Figure 2 mixes Automatic Cycle demonstration and the synchronous output control method of PGM/PST, it is characterized in that comprising following steps:
(1) initialisation image signal and key signals are set original position, and picture signal and key filling signal is synchronous; Set the coefficient value of multiple multiplication device inside counting device, set timing parameter simultaneously;
Described key filling signal comprises KEY signal and filling signal;
(2) the KEY signal in the key filling signal is input in the multiple multiplication device, the coefficient value of the multiple multiplication device inside counting device of setting in KEY signal times and the above-mentioned steps (1) multiplies each other, and obtains signal A;
(3) filling signal in the key filling signal is input in the multiple multiplication device, the a-signal that filling signal and above-mentioned steps (2) obtain adds up, and obtains cumulative signal B;
(4) finish adding up of multiple signals according to obtaining in the step (3) in the cumulative signal B input multi-channel gating device, obtain one-level key filling signal after adding up;
(5) the one-level key filling signal that obtains in the above-mentioned steps (4) is sent into pre-prison passage (PST), carry out the effect preview, and send output signal back to step (4);
(6) observation key entry, key go out effect in pre-prison passage (PST):
1. when effect satisfies effect requirements, supervise passage (PST) in advance the one-level key filling signal that obtains in the above-mentioned steps (4) is sent into the broadcast passage;
2. satisfy current requirement when one-level key filling effect, but when not reaching final effect, the one-level key filling signal that obtains in the above-mentioned steps (4) is returned in the step (2);
3. when the satisfied broadcast of pre-prison effect requires, stop current key entry key and go out effect.
Claims (1)
1. a key mixes Automatic Cycle demonstration and the synchronous output control method of PGM/PST, it is characterized in that comprising following steps:
(1) initialisation image signal and key signals are set original position, and picture signal and key filling signal is synchronous; Set the coefficient value of multiple multiplication device sum counter, set timing parameter simultaneously;
Described key filling signal comprises KEY signal and filling signal;
(2) the KEY signal in the key filling signal is input in the multiple multiplication device, the coefficient value of the multiple multiplication device inside counting device of setting in KEY signal times and the above-mentioned steps (1) multiplies each other, and obtains signal A;
(3) filling signal in the key filling signal is input in the multiple multiplication device, the a-signal that filling signal and above-mentioned steps (2) obtain adds up, and obtains cumulative signal B;
(4) finish adding up of multiple signals according to obtaining in the step (3) in the cumulative signal B input multi-channel gating device, obtain one-level key filling signal after adding up;
(5) the one-level key filling signal that obtains in the above-mentioned steps (4) is sent into pre-prison passage (PST), carry out the effect preview, and send output signal back to step (4);
(6) observation key entry, key go out effect in pre-prison passage (PST):
1. when effect satisfies effect requirements, supervise passage (PST) in advance the one-level key filling signal that obtains in the above-mentioned steps (4) is sent into the broadcast passage;
2. satisfy current requirement when one-level key filling effect, but when not reaching final effect, the one-level key filling signal that obtains in the above-mentioned steps (4) is returned in the step (2);
3. when the satisfied broadcast of pre-prison effect requires, stop current key entry key and go out effect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910187998.XA CN101742127B (en) | 2009-10-20 | 2009-10-20 | Method for controlling key mixing automatic circular demonstration and PGM/PST synchronous output |
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| CN200910187998.XA CN101742127B (en) | 2009-10-20 | 2009-10-20 | Method for controlling key mixing automatic circular demonstration and PGM/PST synchronous output |
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| CN101742127A true CN101742127A (en) | 2010-06-16 |
| CN101742127B CN101742127B (en) | 2014-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853065A (en) * | 2015-05-29 | 2015-08-19 | 北京中庆现代技术有限公司 | Dual broadcasting interface control platform |
| WO2020133371A1 (en) * | 2018-12-29 | 2020-07-02 | 深圳市大疆创新科技有限公司 | Competition video subtitle processing method and broadcast guiding system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9020539D0 (en) * | 1990-09-20 | 1990-10-31 | Avesco Plc | Video signal processing |
| CN1471014A (en) * | 2002-07-25 | 2004-01-28 | 北京贝尔科技发展有限公司 | Interface setting method for digital collecting and editing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853065A (en) * | 2015-05-29 | 2015-08-19 | 北京中庆现代技术有限公司 | Dual broadcasting interface control platform |
| WO2020133371A1 (en) * | 2018-12-29 | 2020-07-02 | 深圳市大疆创新科技有限公司 | Competition video subtitle processing method and broadcast guiding system |
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| CN101742127B (en) | 2014-09-10 |
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Effective date of registration: 20160406 Address after: Hi Tech Park Kehai street Dalian city Liaoning province 116023 No. 3 office building A block 3 layer Patentee after: DALIAN JIECHENG TECHNOLOGY CO., LTD. Address before: 116023 Liaoning city of Dalian province Qixianling high-tech park Kehai Street No. 3 Patentee before: Dalian GigaTec Electronics Co., Ltd. |