CN2456408Y - Rolling caption device (CN) - Google Patents
Rolling caption device (CN) Download PDFInfo
- Publication number
- CN2456408Y CN2456408Y CN 00256580 CN00256580U CN2456408Y CN 2456408 Y CN2456408 Y CN 2456408Y CN 00256580 CN00256580 CN 00256580 CN 00256580 U CN00256580 U CN 00256580U CN 2456408 Y CN2456408 Y CN 2456408Y
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- video
- microprocessor
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- electronic switch
- interface
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Abstract
The utility model relates to a rolling caption device (CN) for video playback devices, which comprises a microprocessor, a character library memory, a display memory, peripherals and interfaces, video overlapping controller and an electronic switch, wherein, the character library memory and the display memory are attached on buses of the microprocessor; the peripherals and the interfaces are connected with input and output ports of the microprocessor; an output port of the display memory is connected with the input of video image signals and video overlapping controller; the output of the video overlapping controller, the video image signals and chroma signal levels are connected with the input of the electronic switch. The utility model has the advantages of cheap price and simple operation, and is capable realize caption rolling playback without special caption machines.
Description
The utility model relates to a kind of roll titles circuit, belongs to the video superimpose technical field.
Existing video playback apparatus, as television set, VCD machine, DVD player, videocorder etc., all be to adopt monolithic " screen display " device to finish the stack of video character, the character that shows can only be curing and static, and only limit to operation and show (as the actions menu of television set), its displaying contents can not arbitrarily be adjusted, and more can not display by screens.If realize that in video playback apparatus captions rolling broadcasts, need the special expensive film titler that increases, and the operation more complicated.
In view of above-mentioned, the purpose of this utility model is the roll titles device of a kind of video playback apparatus of design, and the film titler that it need not be special can realize in video playback apparatus that just captions rolling broadcasts.
The purpose of this utility model is achieved in that
A kind of roll titles device that is used for video playback apparatus, it is characterized in that: it comprises microprocessor, the library stores device, display-memory, ancillary equipment and interface, video superposition controller, electronic switch, the library stores device is connected with the input port of microprocessor, display-memory is articulated on the bus of microprocessor, ancillary equipment and interface are connected with the input/output port of microprocessor, the delivery outlet of display-memory and video signal are connected with the input of video superposition controller, the output of video superposition controller, video signal, chroma level connects the input of electronic switch.
Described ancillary equipment and interface comprise part or all of real-time clock, read-write smart card, keyboard interface, infrared receiving/transmission interface, EEPROM.
The input of described electronic switch connects the amplifying circuit that is used for the amplified video picture signal, and the output of described electronic switch is connected to the amplifying circuit that is used to amplify composite video signal.
The utility model advantage is:
1. cheap.Its need not be special film titler, as long as the circuit of video playback apparatus is transformed a little, can on video playback apparatus, realize the roll titles broadcast, its cost is far below the price of specific subtitles machine.
2. simple to operate.As long as with Infrared remote controller or IC-card (smart card), can be input to required caption content of displaying by screens in the video playback apparatus easily.
3. owing to can be input to caption content simply and easily in the existing video playback apparatus, thus can be used as a kind of novel, flexibly, the advertisement of low price plays carrier.
Describe in detail below in conjunction with drawings and Examples:
Fig. 1 is a circuit block diagram of the present utility model; Fig. 2 is a circuit diagram of the present utility model.
See also Fig. 1.The utility model comprises microprocessor 3, library stores device 1, display-memory 4, ancillary equipment and interface 2, video superposition controller 5, electronic switch 6, library stores device 1 is connected with the input port of microprocessor 3, display-memory 4 is articulated on the bus of microprocessor 3, ancillary equipment and interface 2 are connected with the I/O mouth of microprocessor 3, the delivery outlet of display-memory 4 and video signal are connected with the input of video superposition controller 5, and the output of video superposition controller 5, video signal, chroma level connect the input of electronic switch 6.Wherein:
Deposit the I and II Chinese character in the library stores device 1, can realize dot matrix word libraries such as 12 * 12,16 * 16,24 * 24, call also scalable or character down by microprocessor 3 management by software according to desiring displaying contents;
Ancillary equipment and interface 2 can be expanded EEPROM, real-time clock, iButten according to the situation of practical application, and various interface such as keyboard interface, reading and writing IC card interface, infrared receiving/transmission interface;
On the corresponding screen of in the display-memory 4 each certain a bit is changed to it " 1 " or " 0 " and can be implemented in one bright (look) point or (background colour) point are secretly arranged on the screen;
In circuit of the present utility model shown in Figure 2: U1 (89C52) is for having the microprocessor (also can adopt the microprocessor of other model) of 8K program's memory space.U5 (27C040) is the EPROM of 512K, there is 12 * 12,16 * 16 Chinese character base dot matrix, microprocessor U1 can retrieve and read it according to needs, U3 (62256) is a static RAM (SRAM), is used to deposit the character pattern that the desire stack shows, under the management of program, by to the calculating of dot matrix and to the variation and the adjustment of position, reach the purpose of roll display captions, U5 and U3 constituting word storehouse memorizer, they are articulated on the bus of microprocessor U1.U6 (IDT7132) is a dual port RAM, realizes the function of display random access memory, and a fixing position of the corresponding display screen of each among the U6 decides this some demonstration whether to superpose by the video electronic switch to this set or reset.U7 (M44-64/32) is a video superposition controller, adopt that programmable interface chip finishes that video synchronization signal separates, line scan signals counting, field synchronization and to the output with serial shift of reading of video-ram, this output signal finally realizes the stack of video in order to control of video electronic switch U8.U8 (4053) is the video electronic switch, its each switch comprises a normally closed contact, normal opened contact, a control end and an output, the simplest a kind of occupation mode of the present utility model is: a normally closed input termination vision signal of electronic switch, another often opens input termination TV chroma level, the output of a control termination video superposition controller U7.
Its operation principle is: microprocessor U1 takes out the character pattern data that will show from Chinese character base U5, after in U3, carrying out suitable processing, according to the position that on screen, requires demonstration that sets, deliver in the display-memory U6 and go in the pairing position, by the Digital Logical Circuits among the video superposition controller U7 display-memory is scanned then, with the reveal codes parallel read-out in it, export in the mode of serial code through behind the parallel serial conversion, with control of video electronic switch U8.When certain position among the display-memory U6 is " 0 ", be connected in the video signal of electronic switch normal-closed end a picture point that should the position is sent video electronic switch U8, just make video signal straight-through, position corresponding on the screen just keeps original image; When certain position among the U6 is " 1 ", just will be connected in the chroma level of electronic switch Chang Kaiduan colourity that should the position will be sent video electronic switch U8, make and show a color dot on the corresponding position on the screen, thereby chroma level and video signal are superimposed as composite video signal, send screen display at last.
According to the color of desiring overlaying character (figure), can choose different chroma level stacks, the also combination of available electron switch action realizes the combination of multiple chroma level, to realize the requirement of character cover with frame, translucent and various special-effects.
When captions will roll, send operational order by devices such as reading and writing IC card or keyboard or Infrared remote controller to microprocessor, microprocessor U1 just carries out the character pattern content among the U3 moving on demand, content among the corresponding U6 also changes thereupon, thereby can obtain the rolling effect of full screen various ways, roll as on full frame, single file rolls left ... Deng.
Consider the power of signal, input at electronic switch among the figure connects the amplifying circuit that is used for the amplified video picture signal, and connect in the output of electronic switch and to be used to amplify the amplifying circuit of composite video signal, above-mentioned amplifying circuit is made of transistor Q1-Q6 and auxiliary electrical element.
P1 mouth by interface and microprocessor U1 such as the IC-card read write line in the described ancillary equipment, infrared transceiver etc. is connected, and this is a known technology, repeats no more.U4, U9-U11 are respectively reset circuit, serial line interface, real-time clock and nonvolatile memory.
Described library stores device on the bus that is articulated in microprocessor U1, also can be placed in the IC-card, by its interface the character library dot array data is sent into microprocessor U1 by IC-card.
The utility model can adopt embedded or two kinds of forms of external are connected with video playback apparatus.
So-called embedded being meant, the utility model is made in the internal circuit of video playback apparatus such as television set, VCD machine, DVD player, videocorder, video signal, the chroma level of video playback apparatus are inserted video superposition controller of the present utility model and electronic switch, again the composite video signal of the utility model output is inserted the video output terminals of video playback apparatus, again the interface (as: infrared remote receiver, IC-card read write line, keyboard etc.) of ancillary equipment is contained on the housing of video playback apparatus and gets final product.Its advantage is to make full use of original hardware resource in the video playback apparatus, as microprocessor, video synchronization signal split circuit, infrared remote receiver etc., so just can finish partial function of the present utility model with the hardware such as microprocessor of original equipment, make circuit of the present utility model obtain simplifying, for example save microprocessor, real-time clock etc.
External then is that the utility model is contained in one independently in the housing, and its required input signal is connected with video playback apparatus by above-mentioned relation by connector with output signal.Its advantage is need not change or only need seldom change to the circuit of video playback apparatus, so the applicable video playback apparatus that has now in usefulness.
More than narration and embodiment only are explanation the utility model; be not to be used for limiting claim of the present utility model; therefore; the improvement of any unsubstantiality of doing based on the utility model and prior art; for example the hardware with original video playback apparatus replaces partial circuit of the present utility model etc., surely belongs within the scope of patent protection of the present utility model.
Claims (5)
1. roll titles device that is used for video playback apparatus, it is characterized in that: it comprises microprocessor, the library stores device, display-memory, ancillary equipment and interface, video superposition controller, electronic switch, the library stores device is connected with the input port of microprocessor, display-memory is articulated on the bus of microprocessor, ancillary equipment and interface are connected with the input/output port of microprocessor, the delivery outlet of display-memory and video signal are connected with the input of video superposition controller, the output of video superposition controller, video signal, chroma level connects the input of electronic switch.
2. roll titles device as claimed in claim 1 is characterized in that: described library stores device is articulated on the bus of microprocessor.
3. roll titles device as claimed in claim 1 is characterized in that: described library stores device is connected with microprocessor by described ancillary equipment and interface.
4. roll titles device as claimed in claim 1 is characterized in that: described ancillary equipment and interface are one of real-time clock, read-write smart card, keyboard interface, infrared receiving/transmission interface, EEPROM.
5. roll titles device as claimed in claim 1 is characterized in that: the input of described electronic switch connects the amplifying circuit that is used for the amplified video picture signal, and the output of described electronic switch is connected to the amplifying circuit that is used to amplify composite video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256580 CN2456408Y (en) | 2000-12-01 | 2000-12-01 | Rolling caption device (CN) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256580 CN2456408Y (en) | 2000-12-01 | 2000-12-01 | Rolling caption device (CN) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2456408Y true CN2456408Y (en) | 2001-10-24 |
Family
ID=33613266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00256580 Expired - Fee Related CN2456408Y (en) | 2000-12-01 | 2000-12-01 | Rolling caption device (CN) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2456408Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367777C (en) * | 2005-02-24 | 2008-02-06 | 威盛电子股份有限公司 | Device and method for detecting real-time captions rolling |
| CN101494747B (en) * | 2009-02-24 | 2010-12-29 | 山东泰信电子有限公司 | Method for displaying roll titles based on digital television set-top box |
| CN101483723B (en) * | 2008-01-11 | 2012-06-06 | 新奥特（北京）视频技术有限公司 | Method for performance guarantee of television subtitle playing apparatus based on diversity application |
| CN103248951A (en) * | 2013-04-28 | 2013-08-14 | 天脉聚源(北京)传媒科技有限公司 | System and method for adding scrolling information into video |
-
2000
- 2000-12-01 CN CN 00256580 patent/CN2456408Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367777C (en) * | 2005-02-24 | 2008-02-06 | 威盛电子股份有限公司 | Device and method for detecting real-time captions rolling |
| CN101483723B (en) * | 2008-01-11 | 2012-06-06 | 新奥特（北京）视频技术有限公司 | Method for performance guarantee of television subtitle playing apparatus based on diversity application |
| CN101494747B (en) * | 2009-02-24 | 2010-12-29 | 山东泰信电子有限公司 | Method for displaying roll titles based on digital television set-top box |
| CN103248951A (en) * | 2013-04-28 | 2013-08-14 | 天脉聚源(北京)传媒科技有限公司 | System and method for adding scrolling information into video |
| CN103248951B (en) * | 2013-04-28 | 2016-01-20 | 天脉聚源(北京)传媒科技有限公司 | A kind of system and method adding scroll information in video |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |