CN101394509A - Screen display generating apparatus and method for multiple channels - Google Patents
Screen display generating apparatus and method for multiple channels Download PDFInfo
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- CN101394509A CN101394509A CNA2007101521152A CN200710152115A CN101394509A CN 101394509 A CN101394509 A CN 101394509A CN A2007101521152 A CNA2007101521152 A CN A2007101521152A CN 200710152115 A CN200710152115 A CN 200710152115A CN 101394509 A CN101394509 A CN 101394509A
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Abstract
The invention relates to a multi-channel screen display generation device, which comprises image processing units numbering N for dividing an image data string containing N original images into separate data strings numbering N of the original images; a buffer for temporarily storing screen display column head data and screen display index data which are transmitted externally; a screen display control unit for generating screen display data numbering N according to the screen display column head data and the screen display index data which are temporarily stored by the buffer; and a screen display mixer unit for mixing the screen display data numbering N in the separate data strings numbering N of the original images for outputting mixed image data numbering N.
Description
Technical field
The present invention relates to a kind of screen display generating apparatus and method of multichannel, particularly share screen display generating apparatus and method for identical or different image, different screen display contents is arranged to reach each channel image relevant for a kind of being applied in the multichannel output device.
Background technology
Fig. 1 commonly uses the image of OSD generation and the calcspar of raw video mixed display, and Fig. 2 is the schematic diagram of the data format of OSD cell processing OSD image.Screen display (On ScreenDisplay; OSD) normally one in order to cover or to mix the block image of a raw video; the main effect of this block image provides a graphic interface intuitively, help that the user finishes that various controls to machine, information are known, the screen protection pattern ... or the like function.
In Fig. 1, one CPU (Central Processing Unit, CPU) 10 receives an image data string 11 by the outside, and be sent to a image process unit 14 in the OSD generation device 12, OSD unit 16 reads the data of the OSD gauge outfit as shown in Figure 2 the OSD area data 21 and the data of color table/character list 19 from DRAM (DRAM (Dynamic Random Access Memory)) 24, and these data are temporary in the buffer 18.OSD unit 16 according to these data with the data that produce OSD and send to an OSD mixed cell 20.Deliver to a display unit 22 after the data of the raw video that OSD mixed cell 20 is sent image process unit 14 and the data of the OSD that OSD unit 16 is sent are mixed, show mixed image by it.
OSD generation device 12 can produce character type (Font-Based) and two kinds of images of bitmap type (Bit-Map).No matter it is but any, all be to leave these characters of institute and bitmap in inside or external memory in advance, for example DRAM 24, come each pixel points of specific region on the displaying contents of original image is changed by index (Index), osd information is superimposed in the display frame of original image as the appointment displaying contents of OSD.
If OSD is applied to the multichannel image output device, but application such as KTV (a screen display dynamic image, a screen display requesting song list), supervisory control system (different screen shows different scenes) etc., it is mainly used is that output is given a plurality of displays with a kind of presentation content, as TV or computer screen.So its OSD on each passage, the same time is if there is a demonstration, normally the same.
In said structure, if will show in the separate channel image that different OSD contents, the general practice are that each channel has independent OSD device; Just how many different OSD the same time has show, just what independent OSD devices representative has therein.This kind practice is obviously higher in cost on the cost of equipment and in the processing of data.
Summary of the invention
Purpose of the present invention is for proposing a kind of screen display generating apparatus of multichannel, and it is to reach in the output of multichannel image with a single set of OSD generation device, and can make each channel show different OSD contents.OSD generation device under this framework can lower the design of hardware and software cost greatly because only need singlely, that is lowers on the cost of equipment greatly and the processing of data.
For reaching above-mentioned purpose, the present invention proposes a kind of screen display generating apparatus of multichannel, and it comprises: N image process unit, and the image data string that will have N raw video is divided into the image data string of N independent raw video; One buffer, temporary screen display gauge outfit (Header) data and screen display index (Index) data that transmit by the outside; One screen display control unit, these screen display gauge outfit data and the screen display index data of keeping in according to this buffer produce N display data on the screen; And a screen display mixer unit, the image data string that N display data on the screen is mixed in N independent raw video is with N image data through mixing of output; Wherein, N is greater than 1, control this screen display control unit make N display data on the screen system be shown as the identical image of all different image, identical image and part one of them.
The present invention proposes a kind of screen indication generating method of multichannel, and it comprises the following step: the image data string that will have a N raw video by N image process unit is divided into the image data string of N independent raw video; By temporary screen display gauge outfit data and the screen display index data that transmits by the outside of a buffer; These screen display gauge outfit data and the screen display index data of being kept in according to this buffer by a screen display control unit produce N display data on the screen; The image data string that N display data on the screen is mixed in N independent raw video by a screen display mixer unit is with N image data through mixing of output; And control this screen display control unit make N display data on the screen system be shown as the identical image of all different image, identical image and part one of them; Wherein, N is greater than 1.
Advantage of the present invention is: at the screen display generating apparatus that a kind of multichannel is provided, it is to reach in the output of multichannel image with a single set of OSD generation device, and can make each channel show different OSD contents.OSD generation device under this framework can lower the design of hardware and software cost greatly because only need singlely, that is lowers on the cost of equipment greatly and the processing of data.
Description of drawings
Fig. 1 commonly uses the image of OSD generation and the calcspar of raw video mixed display;
Fig. 2 is the schematic diagram of the data format of OSD cell processing OSD image;
Fig. 3 is the image of OSD generation of the present invention and the calcspar of raw video mixed display; And
Fig. 4 is the image of OSD generation of the present invention and the flow chart of raw video mixed display.
Assembly numbering explanation among the figure
10 CPU
11 image data strings
12 OSD generation devices
14 image process units
16 OSD unit
18 buffers
19 color tables/character list
20 OSD mixer units
21 OSD area datas
22 display unit
24 DRAM
50 OSD generation devices
52 image process units
54 image process units 1
56 image process units 2
58 image process unit N
60 buffers
62 OSD control units
64 OSD mixer units
66 CPU
67 image data strings
68 display units 1
70 display units 2
72 display unit N
74 ROM
76 DRAM
Embodiment
Fig. 3 is the image of OSD generation of the present invention and the calcspar of raw video mixed display.In Fig. 1, the OSD generation device 50 of multichannel includes and has N image process unit 1 54, image process unit 2 56 ... one of image process unit N 58 image process unit 52, a buffer 60, an OSD control unit 62 and an OSD mixer unit 64.
N image process unit 1 54, image process unit 2 56 ... the image data string 67 that image process unit 58 will have a N raw video is divided into the image data string of N independent raw video.OSD gauge outfit data, color table/character list 61 and OSD index data one of in the temporary osd datas that are stored among the DRAM 76 of buffer 60.OSD gauge outfit data and OSD index data that OSD control unit 62 is kept in according to buffer 60 produce N the pixel index data in the osd data.
Export simultaneously for reaching above-mentioned reaching at the multichannel image with a single set of OSD generation device 50, requiring each channel image to show the purpose of different OSD contents, the present invention proposes a kind of implementation method of OSD generation device 50, and its content is:
One, in each OSD zone, adds each image output channel other switch (not illustrating) mechanism.So just, this OSD zone of may command is wanted to show on specific image output channel.
Two, in each OSD zone, each image output channel can define voluntarily required " color table or colour disk (color-table or color-palette) " or " character list (font-table) ", just each image output channel can have shared, part is shared or independently color table or character list.
Three, in each OSD zone, each image output channel can define voluntarily required " OSD index (OSD index) ", and just each image output channel can have shared or index independently.
Fig. 4 is the image of OSD generation of the present invention and the flow chart of raw video mixed display.At first, design the order of connection in advance, and aforementioned data is write among the ROM 74 (or Flash) OSD content image to display and each OSD zone.
Then, in the step of system start-up, will with deposit within osd data is relevant or buffer (as the position of osd data) at internal memory pre-set, and the osd data that will be stored among the ROM 74 writes (step S80) among the DRAM 76 by CPU 66 via OSD generation device 50.
Set a numerical value i=1 (step S82).The raw video serial data of this numerical value i inputs to (step S84) in the image process unit 52 by CPU 66 relatively.Osd data is storage unit (as shown in Figure 2) with the required data of specific picture area usually, and the required data content of each specific picture area generally comprises three parts:
A, OSD gauge outfit data (OSD header) (or OSD Control Parameter (OSD controlparameters)): generally comprise the OSD picture area that will handle origin coordinates, range size, index figure place (resolution), with the mixed ratio of raw video, next OSD zone parameters such as position at internal memory.To each OSD image frame that will show, OSD generation device 50 can be obtained first OSD gauge outfit data of each picture earlier, determines the processing mode (step S86) in this OSD zone according to these data.
B, color table or colour disk: attribute or the processing mode of representing a color numerical value and this color in its each project (entry).Color table has exclusive buffer or internal memory is deposited, and OSD generation device 50 can determine according to OSD gauge outfit data whether color table upgrades; If need to upgrade, then want data updated replaced old color table data.
C, OSD index: be used for searching institute's respective items purpose index in the color table.After obtaining the corresponding color value, promptly change by the pixel points of attribute specification to specific region on the OSD displaying contents.
When will be with OSD image superposition during in raw video, in the step of acquisition OSD parameter and data, OSD generation device 50 be obtained above-mentioned osd data and is temporary in the buffer 60 from DRAM 76.Then, OSD control unit 62 reads OSD gauge outfit data from buffer 60, according to showing the coordinate and the parameters (step S86) such as area size, attribute or index figure place of OSD position to solve desire.
Secondly, OSD control unit 62 reads the OSD index data from buffer 60, with lookup table mode by OSD control unit 62 according to this OSD index data inquiry the color and the character (step S88) of representative in the address of exclusive relatively internal memory or buffer.
The OSD control unit 52 of OSD generation device 50 will send OSD mixer unit 64 according to color value/character that index color look up table/character list obtains to, blend together the relevant parameter of unit according to OSD gauge outfit data, the indivedual picture elements in the OSD specific region to raw video are done change (step S90).Then, numerical value i is added 1 (step S92), repeat implementation step S84～S90 then.
In above-mentioned embodiment, the operating process of OSD generation device 50 can increase following three Control Parameter newly:
In the required OSD Control Parameter (OSD controlheader or header) of A, the specific picture area of each OSD, adding is to " switch parameter " of each image output channel, and so just this OSD picture area of may command wants to be shown in corresponding display unit on specific image output channel.
In the required OSD Control Parameter of B, the specific picture area of each OSD, add " color table or colour disk " position offset parameter of each image output channel, " color table or the colour disk " of reaching each passage shared or purpose independently.For example: if with four passage A, B, C, D is that the resolution parameter of example is respectively 16,16,256,256, then the position offset parameter of color table is respectively 0,16,0,64, then represent each passage A, B, the position 0～15 in the color table that C, D use respectively, 16～31,0～255, the color of 64～319 representatives.
In the required OSD Control Parameter of C, the specific picture area of each OSD, add the position offset parameter of " OSD index " figure place of each image output channel." the OSD index " of reaching each channel shared or purpose independently.Example one: if four passage A, B, C, the resolution parameter of D are 16, and the position offset parameter of its figure place is respectively 0,4,8,12, then represent passage A, B, C, the used figure place of D is respectively position 0～3,4～7,8～11,12～15 each four position, its expression channel A, B, C, D are respectively different separately OSD picture areas.Example two: if channel A, B, C, the resolution parameter of D is respectively 16,16,256,256, the position offset parameter of figure place is respectively 0,4,8,8, then represent passage A, B, C, the used figure place of D is respectively position 0～3,4～7,8～15,8～15, its expression passage A, B, C/D is respectively different separately OSD picture areas, and channel C, D is identical OSD picture area.
Claims (14)
1. the screen display generating apparatus of a multichannel, it is characterized by: it comprises:
N image process unit, the image data string that will have N raw video is divided into the image data string of N independent raw video;
One buffer, temporary screen display gauge outfit data and the screen display index data that transmits by the outside;
One color table or character list internal memory, pixel color or character data that storage can supply this screen display index data to table look-up;
One screen display control unit, these screen display gauge outfit data and the screen display index data of keeping in according to this buffer produce N pixel color or character data; And
One screen display mixer unit is mixed in the image data string of N independent raw video with N image data through mixing of output with N pixel color or character data;
Wherein, N is greater than 1; This N the image data through mixing exports N outside display unit to, to show different screen display effects in this N display unit;
Wherein, these screen display gauge outfit data have a Control Parameter, this Control Parameter tool one switch parameter, and each display unit is judged this image data through mixing of demonstration by this switch parameter;
Wherein, this Control Parameter tool table position offset parameter of the same colour, each display unit are found the pixel color or the character data of correspondence by this color table position offset parameter;
Wherein, the position offset parameter of this Control Parameter cording one index figure place, each display unit finds corresponding screen display index data by the position offset parameter of this index figure place.
2. screen display generating apparatus according to claim 1 is characterized by: wherein this N image process unit receives the image data string of the individual independent raw video of the N that is transmitted by a data/address bus.
3. screen display generating apparatus according to claim 1 is characterized by: wherein this buffer receives these screen display gauge outfit data and the screen display index data that is stored in the internal memory.
4. screen display generating apparatus according to claim 3 is characterized by: wherein this CPU sees through a memory control unit and reads these screen display gauge outfit data, the screen display index data of the institute's transmission that is stored in a read-only memory.
5. screen display generating apparatus according to claim 1 is characterized by: wherein this screen display control unit is with lookup table mode stored color and data of character in the address of this color table or character list internal memory inquiry with respect to this screen display index data indication.
6. screen display generating apparatus according to claim 1 is characterized by: wherein these screen display gauge outfit data comprise the on-screen displays zone that will handle origin coordinates, range size, pointer or index figure place, with raw video mixed proportion, next on-screen display (osd) area parameters such as position at internal memory.
7. the screen indication generating method of a multichannel, it is characterized by: it comprises the following step:
The image data string that will have a N raw video by N image process unit of a screen display generating apparatus is divided into the image data string of N independent raw video;
Temporary by one of this screen display generating apparatus buffer by one of outside transmission screen display gauge outfit data and screen display index data;
These screen display gauge outfit data and the screen display index data of being kept in according to this buffer by one of this screen display generating apparatus screen display control unit produce N pixel color or character data;
By one of this screen display generating apparatus screen display mixer unit N pixel color or character data are mixed in the image data string of N independent raw video with N image data through mixing of output; And
Controlling this screen display control unit makes N pixel color or character data system be shown as the identical image of the image of whole differences, identical image and part wherein;
Wherein, N is greater than 1.
8. according to the described screen indication generating method of claim 7, it is characterized by: the image data string that wherein receives N the raw video that is transmitted by one of outside data/address bus by this N image process unit.
9. described according to Claim 8 screen indication generating method is characterized by: wherein receive these screen display gauge outfit data and the screen display index data that is stored in the internal memory by this buffer.
10. according to the described screen indication generating method of claim 9, it is characterized by: these screen display gauge outfit data, the screen display index data that wherein read the institute's transmission that is stored in a read-only memory by this CPU.
11., it is characterized by: N the display unit that wherein N the on-screen data through mixing is exported to the outside by this screen display mixer unit according to the described screen indication generating method of claim 7.
12., it is characterized by according to the described screen indication generating method of claim 7: wherein by this screen display control unit with lookup table mode stored color and data of character in the address of a color table or character list internal memory inquiry with respect to this screen display index data indication.
13., it is characterized by according to the described screen indication generating method of claim 7: wherein these screen display gauge outfit data comprise the on-screen displays zone that will handle origin coordinates, range size, pointer or index figure place, with raw video mixed proportion, next on-screen display (osd) area parameters such as position at internal memory.
14. according to the described screen indication generating method of claim 7, it is characterized by: more comprise the following step:
Design the order of connection in advance, and these data are write in the read-only memory the zone of the image of screen display to display and each screen display; And
Preestablish data with screen display and deposit or buffer within relevant, and with the data of the screen display in this read-only memory by this CPU via in this screen display generating apparatus write memory or the buffer.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101521152A CN101394509A (en) | 2007-09-17 | 2007-09-17 | Screen display generating apparatus and method for multiple channels |
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| CNA2007101521152A CN101394509A (en) | 2007-09-17 | 2007-09-17 | Screen display generating apparatus and method for multiple channels |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036043A (en) * | 2010-12-15 | 2011-04-27 | 成都市华为赛门铁克科技有限公司 | Video data processing method and device as well as video monitoring system |
| CN107864344A (en) * | 2017-10-20 | 2018-03-30 | 狼天科技（深圳）有限公司 | A kind of unmanned plane during flying data display method and device based on OSD |
| CN113132768A (en) * | 2019-12-31 | 2021-07-16 | 致茂电子(苏州)有限公司 | Image display system and method |
-
2007
- 2007-09-17 CN CNA2007101521152A patent/CN101394509A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036043A (en) * | 2010-12-15 | 2011-04-27 | 成都市华为赛门铁克科技有限公司 | Video data processing method and device as well as video monitoring system |
| WO2012079453A1 (en) * | 2010-12-15 | 2012-06-21 | 成都市华为赛门铁克科技有限公司 | Video data processing system and method, cpu, gpu and video monitoring system |
| CN107864344A (en) * | 2017-10-20 | 2018-03-30 | 狼天科技（深圳）有限公司 | A kind of unmanned plane during flying data display method and device based on OSD |
| CN113132768A (en) * | 2019-12-31 | 2021-07-16 | 致茂电子(苏州)有限公司 | Image display system and method |
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Open date: 20090325 |