WO2001075795A1 - Procede adaptatif permettant de parcourir des donnees videotex en ligne sur un poste de television standard - Google Patents
Procede adaptatif permettant de parcourir des donnees videotex en ligne sur un poste de television standard Download PDFInfo
- Publication number
- WO2001075795A1 WO2001075795A1 PCT/CN2000/000746 CN0000746W WO0175795A1 WO 2001075795 A1 WO2001075795 A1 WO 2001075795A1 CN 0000746 W CN0000746 W CN 0000746W WO 0175795 A1 WO0175795 A1 WO 0175795A1
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- image
- display
- adaptation method
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
Definitions
- the present invention relates to a digital image processing method, and more particularly, to a method for displaying a higher-resolution image on a display device with lower resolution by using digital image processing technology, and more specifically, It involves the processing of high-resolution images (information such as web pages from the Internet) on the client side by digital image processing technology, making it suitable for lower resolutions such as standard television receivers (SDTV) Adaptation method displayed on a monitor (the so-called (WebScope method).
- SDTV standard television receivers
- WebScope method Adaptation method displayed on a monitor
- the monitors for browsing must have 800x600 or 1024x768 pixels. Resolution, most common computer monitors can meet this requirement, so users who use the computer to access the Internet see a clear, real and colorful world.
- SDTV standard television
- SDTV standard television
- SDTV standard television
- the computer monitor adopts the standard of progressive scanning, and the standard television (SDTV) Interlaced scanning is used, so flickering occurs when viewing the high-resolution graphics and text information directly on the Oakland TV;
- SDTV standard television
- SDTV standard TV
- the first method is to display the web page directly on the screen of the television according to a certain ratio.
- the result of this is that when the actual webpage is not specifically designed to fit on the TV display, the effect of the image we see is very poor, such as the display content is not clear, the color is skewed, flickering, etc .;
- WebTV What TM does is to reorganize the webpage information on the server side to display it on a low-resolution monitor such as a TV, and then download the reorganized content to users who use the TV to access the Internet.
- the purpose of seeing the content of the webpage clearly is that the content of the webpage can be obtained as a viewer, but this requires the reorganization of the webpage, thus completely losing the personalized style and layout and artistic effects pursued by the original webpage design.
- the purpose of the present invention is to provide a method to solve the above-mentioned problems in the prior art when using standard televisions to browse graphic information on the network: that is, to resolve the use of lower-resolution display devices such as standard television receivers at the client
- An adaptive method (WebScope method) to browse the problem of graphic data on the Internet.
- the implementation of this method allows users who use a standard television (or such low-resolution monitor) to browse network information, without compromising the web page. Under the premise of the personalized style and layout and artistic effects that designers originally pursued, they can see clear webpage content, and show these users the scene that the online world originally wanted to show to viewers.
- the present invention provides a digital image processing method for a high-resolution image signal of a web page to be displayed from the Internet, which is suitable for displaying on a low-resolution display such as a standard television (SDTV). Display adaptation method.
- SDTV standard television
- all or part of the original high-resolution image can be arbitrarily scaled, and at the same time, any part of the original image can be browsed arbitrarily, so that it is more convenient for the user to use a lower level such as a standard television (SDTV).
- SDTV standard television
- the method of the invention is characterized in that by zooming the original image, high-resolution images are displayed on the SDTV at different display ratios.
- the original image cannot be all displayed on the screen of the SDTV due to scaling, by changing the screen size See the relative position of the area in the original image to browse other parts of the original image.
- the above method of the present invention includes the following steps: setting an observation reference point; setting a zoom ratio; scaling digital image filtering of the image data of the observation area determined by the reference point and the set zoom ratio; and limiting the bandwidth of the video signal.
- FIG. 1 is a schematic diagram showing an example of an image of original web page information from the Internet to be displayed on a quasi-TV (SDTV) according to the display adaptation method of the present invention
- FIG. 2 is a schematic diagram showing that all the webpage images shown in FIG. 1 are displayed on a SDTV display screen;
- FIG. 3 shows the display adaptation method according to the present invention.
- the user is interested in the circled area in FIG. 2, by moving the cursor to the area of interest, the original image's zoom ratio can be changed at the same time. Schematic of the effect seen;
- Figure 4 shows the display adaptation method according to the present invention.
- the schematic view of the effect can be seen on the TV by changing the image zoom ratio again;
- FIG. 5 shows a display adaptation method according to the present invention. After the display effect meets the user's needs, if the user wants to see other parts of the entire webpage, he can move the cursor to change the reference point from the TV screen to browse Any part of the entire web page;
- Figure 5 shows a schematic diagram of the situation after the user drags the cursor to the upper right direction based on the situation shown in Figure 4;
- FIG. 6 shows a display adaptation method according to the present invention.
- the user drags the cursor to the lower left direction on the basis of the situation shown in FIG. 4, a schematic diagram of the situation will be seen;
- FIG. 7 is a hardware environment explaining a preferred embodiment of a display adaptation method according to the present invention.
- FIG. 8 is a flowchart explaining a preferred embodiment of a display adaptation method according to the present invention implemented in the hardware environment of FIG.
- FIG. 9 is a flowchart explaining a user interface device interrupt service routine according to a preferred embodiment of the display adaptation method of the present invention implemented in the hardware environment of FIG.
- Fig. 10 is a schematic diagram for explaining the method of enlarging an image by using the method of increasing sampling points
- Fig. 11 is a schematic diagram of a process of applying resampling principle to the display adaptation method of the present invention to realize resampling by a sampling frequency converter.
- Figs. 1-6 it is explained how the display adaptation method of the present invention applies graphic information from the Internet to digital image processing through the display adaptation method to obtain a lower resolution such as a standard television (SDTV). Rate display device to achieve good display results.
- SDTV standard television
- FIG. 1 this is a practical example of a certain page of webpages we want to see on TV. It is an image of 1024x768 dots. If such an image is displayed directly on the TV, On board, we will see the effect shown in Figure 2. 2 In reality, it is the effect of reducing the original image to the TV screen after scaling it down. It can be seen that we can't see such an image clearly from the effect shown in Figure 2, but at this moment, ordinary users can still see a general crust and general information of the entire web page. At this time, the image displayed on the TV will lose a lot of detailed information, that is, it is difficult to see the graphic information on the network directly through the standard TV.
- the circle in FIG. 2 is a position mark added after the diagram is drawn to indicate the areas that the user wants to see clearly discussed below, which are described in detail below.
- the user can move the cursor to the area, and at the same time, change the display adaptation method of the present invention to the original through an external interface device.
- the zoom ratio of the image After processing, the result displayed on the TV is shown in Figure 3. It can be seen that what we see on the TV screen is only a part of the original image. The user can already You can clearly see the contents of this part of the image. If you are not satisfied with the display effect, the user can continue to adjust the zoom ratio through the interface device until the satisfactory effect is achieved.
- observation area For a user who uses the TV to access the Internet, what he can see on the TV's screen becomes an observation area.
- the observation area may be the entire web page or a partial image of the web page.
- the determination of the observation area depends on the position of the cursor, that is, the reference point of observation, and the current zoom ratio.
- the size of the area that can be observed when the zoom ratio changes depends on the zoom ratio, and it is usually centered on the current cursor position. (If the area calculated in this way exceeds the range of the original image, the area of the image to be processed needs to be re-determined according to the boundary of the original image).
- the size of the observation area will not change, and the image area to be processed will not move out of the visible observation reference point at the current cursor position. If it is the same as the previous processing area Compared to the processing area where the current position of the cursor has been moved, the border of the new processing area is based on the frame of the cursor.
- Figure 4 shows the enlarged effect diagram.
- the user can only see a part of the original webpage image on the screen. If the user wants to see other areas Information, you can change the observation reference point by moving the cursor position * relative position in the original webpage image to view other parts, as shown in Figure 5, Figure 6, respectively, the user in the case shown in Figure 4 What the user will see on the TV after dragging the cursor position up or down to a certain distance.
- the original image can be zoomed in and out at any proportion according to the user's instructions to achieve the viewing effect that the user is satisfied with.
- This is also a process of human-computer interaction, and our processing The method is to analyze the user's control information passed through the human-computer interaction interface device, and process the part of the image that the user wants to see according to the user's control information.
- reference numeral 701 represents a user interface controlled by a user
- reference numeral 702 represents a standard television (SDTV)
- reference numeral 703 represents the Internet
- ⁇ 704 represents a network access device such as a modem
- reference numeral 705 represents such as a DSP
- a central processing unit such as a CPU
- a bracket 706 represents an NTSC / FAL encoder or the like
- a reference numeral 707 represents a memory
- a reference numeral 708 represents a web browser (Web Broswer) software program, and a display adaptation method according to the present invention.
- reference numeral 709 represents a data storage area such as RAM
- reference numeral 710 represents an original graphic data storage area
- reference numeral 71 1 represents an output Video graphics data storage area.
- the implementation of the display adaptation method of the present invention is specific to each requirement, and is described as follows: Acquisition of control information required by the display adaptation method of the present invention: These are the functions of the so-called human-machine interface part, which can be determined by The system-level device driver is any device that can implement the user's dialogue instruction input with the central processing unit 705 to provide a human-machine interface function.
- the writing of the corresponding device drivers can be determined according to the specific implementation situation. For example, if a mouse is used as the control interface device, the driver of the mouse only needs to record the change status of the mouse by changing some registers and other memories, so as to obtain the user's control information. Same In specific implementation, you can also use such devices as keyboards, remote controls, game joysticks, etc.
- WebBrowser is stored in the memory in the form of software modules, which is called by the central processing unit to complete the functions of the browser.
- the problem to be solved by the present invention is how to browse the graphic information on the network on a low-resolution display device such as an ordinary standard television. As for obtaining the graphic information on the network, this is what WebBrowser is concerned about.
- the problem of our method is that the processing of graphic information starts from the webpage data that has been obtained, that is, after the WebBrowser obtains the webpage data that the user wants to see and converts it into image data for display. of.
- Image processing of required data This process is completed by the central processing unit 705 calling a program prepared in accordance with the display adaptation method of the present invention stored in the program memory 708 according to a control information command issued by a user.
- the implementation process will be described in detail later.
- the final generated result of the present invention is data for digital video images that can be displayed on television after coded modulation, and the generated digital video images
- the image data only needs to comply with the requirements of CCIR601, and the data obtained in this way can be connected with digital video encoders compatible with the CCI R656 standard as long as the digital video data is output in accordance with the output format specified by the CCIR6 56 standard (such as PHILIPS 'SAA7185 Or a chip like this, as long as it is compatible with the CCIR656 standard.)
- the digital video encoder an analog video signal that can be received by a television receiver can be obtained. After this conversion, the user can see that The video image signal obtained after processing by the mentioned processing method.
- the embodiment described here is only a specific example of the display adaptation method of the present invention. What is mentioned here is the external environment (including the hardware and software environment) required to implement the display adaptation method mentioned in the present invention. It should be emphasized that the method of the present invention does not depend on a specific hardware or software environment, as long as it can provide the control information required to obtain the display adaptation method of the present invention, obtain the required processing data, and generate television signals. These external conditions are sufficient to produce the code modulation.
- the present invention has no requirement on which WebBrowser to use when obtaining webpage data to be processed.
- the more popular Microsoft IE TM or Netscape's Netscape TM, or any other A browser which can be determined by the person or company wishing to use the technology of the present invention; the question about the interface with these browsers is implemented in detail after obtaining the knowledge of their intellectual property owner
- the source code of some browsers is also available for download on the Internet.
- Netscape ’s Netscape TM provides a litre download service of Netscape TM source code on its homepage (http://www.ne1.ne 1. scape.com), professionals who are interested in how WebBrowser obtains information on the network and converts it into image data for display can download its source code.
- FIG. 7 is a schematic diagram showing an example of a specific environment for implementing the adaptation method.
- the Internet 703 is connected to the network access device 704 through a communication line, and the user interface 701, the NTSC / PAL encoder 706, and the memory 707 are respectively It is connected to the central processing unit 705.
- An NTSC / PAL encoder 706 is connected to the SDTV 702.
- the user interface 701 is used to select and set the area to be displayed, which can be the entire image or a part of the image, that is, it can be performed Zoom settings.
- the above-mentioned user interface for setting may be a mouse, such as a mouse such as InteliMouse TM.
- the mouse has two keys and a roller between them. This roller can be defined as a device that controls the "focal distance", that is, the zoom ratio.
- the user interface can also use any instruction input device that enables the user to talk to the central processor 705.
- the central processing unit 705 receives the user's control instruction, and calls related programs such as a program prepared according to the display adaptation method proposed by the present invention in the memory 707 to set the desired display area, and the graphic data of the set zoom ratio.
- Perform digital filtering (the above-mentioned digital filtering and related operations will be further described below) to form image data suitable for display on a standard television (SDTV) set by the user to set a zoom ratio, and place it in the output video image data storage area of the memory 707 In 711, it is finally output to a standard television (SDTV) 702 via an NTSC / PAL encoder (706).
- FIG. 7 shows a process in which the central processing unit 705 calls a program prepared in accordance with the display adaptation method of the present invention from the program storage area 708 and runs it.
- Step 801 is started, and an image to be processed is displayed on a TV screen, and a user inputs a control command, such as an enlarged image, through a control interface 701 device such as a keyboard or a mouse.
- a control interface 701 device such as a keyboard or a mouse.
- step 802 the central processing unit 705 obtains the user command information in the control interface device 71. Detect a user command. If the detection result indicates that the user changes the cursor position or changes the zoom ratio of the original image or both, then in step 803, the center The processor 705 resets the observation reference point and the zoom ratio according to a user instruction. For example, according to an instruction of the user to enlarge the image, the central processing unit 705 sets the image enlargement ratio to 1 times. Then proceed to step 804. If the detection result in step 802 is "No", the display window and zoom ratio previously set are still used, and the process proceeds directly to step 804.
- Step 804 is performing RGB to YUV conversion.
- the RGB to YUV conversion can also be performed after the subsequent step 805 is completed.
- the central processing unit 705 calls from the data storage area 709 the data obtained from step 803 or the previously set display window and scaling data, and performs RGB to YUV conversion, so that the video signal is displayed on a standard television.
- the reason for joining this step is because the general web browsers are designed for computer applications, so in general, the image data generated for display is mostly in RGB format (the point to be mentioned here is If in the implementation of WebScope, if the selected browser can provide YUV format image data output, then this step can be omitted.
- the format of the image data generated by the browser is RGB in general. of. )
- step 805 digital filtering.
- the purpose of this filtering is actually to scale the image data of the area we want to display, and to limit the video signal's bandwidth to quasi-TV reception before encoding and modulating the video signal.
- filter out the excessive high-frequency components that generate interference and form a video signal that conforms to the standard television (SDTV) bandwidth, such as NTSC It meets the bandwidth limitation of the video signal bandwidth of 4.2 MHz for PAL system and 6 MHz for PAL system.
- SDTV standard television
- the process of scaling a Digital Image in terms of digital signal processing is to resample the image according to the new sampling rate.
- the digital filtering module is a sampling frequency converter (Sampling Rate Converter). Taking four-fold interpolation sampling as an example, as shown in FIG. 11, the sampling frequency converter refers to inserting three sample points with a value of 0 into every two low-frequency sample points in the inch domain to increase the data length to the original value. 4 times the data length, and then pass the temporarily generated sequence through a digital low-pass filter to obtain a new sequence. At this time, the "0" point in the original sequence has been replaced by the new value calculated by the filter. To complete the conversion of the sampling frequency.
- the frequency characteristic of the digital filtering of the sampling frequency converter is a low-pass filter, so this filter can simultaneously meet the requirements of limiting the bandwidth of digital video signals.
- sampling frequency converter For details on the sampling frequency converter, please refer to pages 704 to 71 of the publication "Introduction to Signal Processing” (1996) by Sorentes J. Orlanidis, Prentice-Hall Publishing Company. A detailed description of the implementation and characteristics of the sampling frequency converter is provided in this part of the literature. See also the digital filters (FIR-type digital filters) on pages 541 to 568 of the book. discussion.
- the standard television uses the visual inertia of the human eye to adopt an "interlaced scanning" method that divides an image into two fields for transmission.
- This technology overcomes the large area flicker phenomenon.
- the brightness of the entire screen is repeated on a field-by-field basis.
- the FAL system is 50 fields / S, which is just higher than the critical flicker frequency (48HZ), but the brightness of each line is repeated by frame. That is 25 times / S, which is lower than the critical flicker frequency. In this way, brighter details appear, and interline flicker will be generated.
- the original image is resampled and processed.
- the cutoff frequency of the sampling converter SRC satisfies the signal bandwidth limitation of the television system, and data in the vertical direction Processing, the SRC also plays a low-pass role at the same time, limiting the vertical change of the entire image, so that the change between the odd / even lines in a TV image generated in this way is not large, thereby solving the quasi-TV Problems caused by interlaced scanning.
- the implementation of the digital filtering function of step 805 is a process in which the central processing unit 705 calls the display adaptation program from the program storage area 708 and runs the display adaptation program.
- the central processing unit 705 calls the display adaptation program in the program storage area according to the scaling ratio set in step 803, and determines parameters such as the increase or decrease of the sampling points. For example, when a user inputs an instruction to enlarge an image by a factor of two through a mouse, the display adaptation program executes a resampling process according to the instruction to double the magnification, changes a sampling point parameter, and doubles the sampling point. After the display adaptation program is executed, the central processor 705 stores the newly obtained data in the data storage area 71 1.
- step 806 to refresh the data buffer area of the output video signal, which completes one frame of YUV image data.
- the central processor 705 notifies the NTSC / PAL encoder 706 that the video data is ready. After the image data is output, the flow advances to step 807 to return.
- the device for the user to control the interface device that changes the position of the cursor and the zoom ratio can be a rattle using the roller of the emperor.
- the middle roller of the oak with a roller to control For the zoom ratio, for example, pushing forward means increasing and reducing multiples, pushing the roller backward means increasing and increasing multiples.
- the current zoom ratio should be determined based on the previous zoom ratio and the current motion of the roller.
- a mouse with a scroll wheel as our interface device for receiving user control information, it does not mean that we must use such an interface device.
- this The invention has no special requirements for the specific implementation of the interface device, as long as it can meet the purpose of receiving and storing control commands of the user.
- step 902 refreshes and displays the cursor position information required by the adaptation method.
- step 903 to detect whether there is a control of scaling change. If the detection result is "YES”, proceed to step 904 to set a scaling change flag; then proceed to step 905 to set corresponding information of other functional modules in the system; If the detection result in step 903 is "No", proceed directly to step 905 to set the corresponding information of other functional modules in the system.
- the flow then returns to step 906.
- the present invention solves the above-mentioned problems in the prior art when using standard televisions to browse graphic information on the network: that is, at the client, the use of standard television receivers and other lower resolution display devices to browse online graphic data Operational method of the problem (WebScope method)
- WebScope method Operational method of the problem
- the implementation of the law allows users using standard televisions (or similar low-resolution monitors) to browse network information without compromising the premise of personalized style and layout and artistic effects that web designers originally sought. See the clear webpage content below, and show these users the scene that the online world originally wanted to show to viewers.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU23437/01A AU2343701A (en) | 2000-03-31 | 2000-12-29 | Adaptive method for browsing the videotex data on-line by using the sdtv |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN00105579.8 | 2000-03-31 | ||
CN00105579.8A CN1315807A (zh) | 2000-03-31 | 2000-03-31 | 利用标准电视机浏览网上图文数据的适配方法 |
Publications (1)
Publication Number | Publication Date |
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WO2001075795A1 true WO2001075795A1 (fr) | 2001-10-11 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/CN2000/000746 WO2001075795A1 (fr) | 2000-03-31 | 2000-12-29 | Procede adaptatif permettant de parcourir des donnees videotex en ligne sur un poste de television standard |
Country Status (4)
Country | Link |
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US (1) | US20020129382A1 (zh) |
CN (1) | CN1315807A (zh) |
AU (1) | AU2343701A (zh) |
WO (1) | WO2001075795A1 (zh) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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FI115674B (fi) * | 2000-06-30 | 2005-06-15 | Nokia Corp | Menetelmä ja järjestelmä merkintäkielipohjaisten sivujen esittämiseksi kannettavissa laitteissa |
CN100444664C (zh) * | 2002-12-25 | 2008-12-17 | 北京中星微电子有限公司 | 移动通信终端上图像的显示方法和实现该方法的装置 |
KR101007798B1 (ko) * | 2003-12-08 | 2011-01-14 | 엘지전자 주식회사 | 디지털방송수신기의 주영상의 일부영역에 대한 스케일링방법 |
CN1333583C (zh) * | 2004-06-10 | 2007-08-22 | 宏碁股份有限公司 | 显示及处理网络数据的方法与使用该方法的显示系统 |
CN100337189C (zh) * | 2004-06-11 | 2007-09-12 | 宏碁股份有限公司 | 在低分辨率显示装置呈现高画质网页数据的方法及其应用 |
US20080092172A1 (en) * | 2006-09-29 | 2008-04-17 | Guo Katherine H | Method and apparatus for a zooming feature for mobile video service |
CN101188712B (zh) * | 2007-12-21 | 2012-07-18 | 康佳集团股份有限公司 | 一种页面自适应显示处理的方法 |
CN102073986A (zh) * | 2010-12-28 | 2011-05-25 | 冠捷显示科技(厦门)有限公司 | 实现显示装置画面放大的方法 |
CN103853482B (zh) * | 2012-12-06 | 2018-11-13 | 联想(北京)有限公司 | 一种视频缩放的方法及装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH099160A (ja) * | 1995-06-22 | 1997-01-10 | Sony Corp | 表示制御装置および表示制御方法 |
JPH11136675A (ja) * | 1997-08-12 | 1999-05-21 | Internatl Business Mach Corp <Ibm> | セット・トップ・ボックスを用いたイメージ・スクロール |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US6515678B1 (en) * | 1999-11-18 | 2003-02-04 | Gateway, Inc. | Video magnifier for a display of data |
-
2000
- 2000-03-31 CN CN00105579.8A patent/CN1315807A/zh active Pending
- 2000-12-29 US US10/009,150 patent/US20020129382A1/en not_active Abandoned
- 2000-12-29 AU AU23437/01A patent/AU2343701A/en not_active Abandoned
- 2000-12-29 WO PCT/CN2000/000746 patent/WO2001075795A1/zh active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH099160A (ja) * | 1995-06-22 | 1997-01-10 | Sony Corp | 表示制御装置および表示制御方法 |
JPH11136675A (ja) * | 1997-08-12 | 1999-05-21 | Internatl Business Mach Corp <Ibm> | セット・トップ・ボックスを用いたイメージ・スクロール |
Also Published As
Publication number | Publication date |
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CN1315807A (zh) | 2001-10-03 |
AU2343701A (en) | 2001-10-15 |
US20020129382A1 (en) | 2002-09-12 |
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