WO2015200624A1 - Display interface bandwidth modulation - Google Patents
Display interface bandwidth modulation Download PDFInfo
- Publication number
- WO2015200624A1 WO2015200624A1 PCT/US2015/037673 US2015037673W WO2015200624A1 WO 2015200624 A1 WO2015200624 A1 WO 2015200624A1 US 2015037673 W US2015037673 W US 2015037673W WO 2015200624 A1 WO2015200624 A1 WO 2015200624A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compression
- display panel
- display
- processor
- information
- Prior art date
Links
- 230000006835 compression Effects 0.000 claims abstract description 70
- 238000007906 compression Methods 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000003860 storage Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 abstract description 11
- 238000012545 processing Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 9
- 230000001413 cellular effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 101100453350 Candida albicans (strain SC5314 / ATCC MYA-2876) HBR1 gene Proteins 0.000 description 1
- 101100337984 Scheffersomyces stipitis (strain ATCC 58785 / CBS 6054 / NBRC 10063 / NRRL Y-11545) GSM1 gene Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/164—Feedback from the receiver or from the transmission channel
- H04N19/166—Feedback from the receiver or from the transmission channel concerning the amount of transmission errors, e.g. bit error rate [BER]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/006—Details of the interface to the display terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4436—Power management, e.g. shutting down unused components of the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/02—Handling of images in compressed format, e.g. JPEG, MPEG
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
- G09G2340/0435—Change or adaptation of the frame rate of the video stream
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2350/00—Solving problems of bandwidth in display systems
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
Definitions
- Figure 1 is a hardware depiction for one embodiment
- Figure 2 is a flow diagram for a checksum mechanism according to one embodiment
- Figure 3 is a flow chart for bandwidth modulation according to one
- Figure 4 is a system depiction for one embodiment; and Figure 5 is a front elevational view for one embodiment. Detailed Description
- Bandwidth modulation may enable parts of the display data-path to operate at a lower performance level to reduce power consumption by providing a
- compression capability as part of the display engine. Use of compression may afford a bit rate reduction and/or lane width reduction on the display interface to support higher resolution display. With the bit rate and/or lane reduction and selective use of a refresh rate reduction, the power consumption of the display data-path may be reduced.
- Compression techniques may enable lowering a display's refresh rate, reducing interconnect bit rate, reducing the number of lanes on the display interface or all three reductions.
- the following table illustrates how compression can benefit.
- the first column from the left contains four different display resolutions with each pixel represented by 24-bit per pixel color precision.
- the second column from the left shows the number of lanes required at different bit rates when the refresh rate is 60Hz and there is no compression.
- RBR stands for 1 .62 Gbps data rate on a DisplayPort ® display interface
- HBR1 stands for 2.7Gbps data rate
- HBR2 stands for 5.4Gbps.
- the display interface 31 provides the interface between a display, such as a flat panel display, and a processor-based device, such as a mobile computing device.
- a display such as a flat panel display
- a processor-based device such as a mobile computing device.
- the computing platform 29, in one embodiment, may include a printed circuit
- a display panel 34 may be connected to a display panel 34 using an interface 31 , such as an embedded DisplayPort interface with panel self refresh (PSR). See the Embedded DisplayPort Specification, Version 1 .4, dated February, 2013.
- the DisplayPort specification provides a main link 36, an auxiliary or AUX link, and a Hot Plug Detect (HPD) link 38.
- a liquid crystal display (LCD) display 40 receives pixels generated by a graphics processing unit 42 on the platform 29.
- the graphics processing unit may include an embedded
- DisplayPort transmitter 44 that sends signals over the main link and receives auxiliary and HPD signals over those links.
- the graphics processing unit 42 communicates via the main link with an embedded DisplayPort touch controller (TCON) 46, in one embodiment, with an embedded DisplayPort receiver 48.
- the pixel formatter 50 communicates with an LCD interface 54 which provides input signals to row and column drivers 44 and 60.
- the pixel formatter 50 also communicates bi-directionally with a frame buffer 56 inside the panel.
- DisplayPort display interface is described, other interfaces may also be used, including those defined by the MIPI Alliance.
- a checksum mechanism is created for each line or each block (multiple lines) of the original image as illustrated in Figure 2.
- a combination of the checksum plus post-processing such as root-mean squared of error may be used in one embodiment.
- An example of a checksum is cyclic recovery check (CRC).
- CRC cyclic recovery check
- compression ratio may vary from line to line or block to block, as indicated in Figure 2, by the different vertical extents of the lines of the compressed image.
- a sequence, shown in Figure 3 may be implemented in hardware, software and/or firmware. In software and hardware embodiments, it may be implemented by one or more non-transitory computer readable media storing instructions executed by a processor to perform the sequence depicted. Examples of such media include optical, magnetic, and semiconductor storages.
- the sequence may be implemented by any processor, including, for example, a graphics processing unit or, as another example, a central processing unit.
- the flow diagram in Figure 3 shows an approach involving optimizing lane width and bit rate using compression.
- the graphics processing unit notifies the display engine (for example, with the transmitter 44) of a new rendered frame 10
- the display engine sends the new image, using 50Hz (or remains at 60Hz) as an example, with a compression ratio (for example two) with minimum lane width and bit rate, in one embodiment, as shown in step 12.
- the display engine also sends the associated CRC values (step 14) for the original uncompressed frame if this is the first transmission of the frame.
- the checksums may be sent with, after, or before the frame.
- the panel electronics decompresses the image and calculates the received CRC values at 16 to determine the number of disparities against the original CRC values at 18. The number of disparities indicates the lossy or the transmission.
- the display engine may also specify a disparity level threshold as part of the frame transmission.
- the number of disparities can be provided back (at 22) to the display engine as a feedback 20 at the end of the frame interval, such as during the back porch portion of the vertical blanking interval, which is the area of a composite video signal defined as the time between the end of a color burst and the start of active video.
- the display engine reads the feedback (block 26) to adjust the compression rate or technique accordingly (block 28), which may also modify the lane width, bit rate and/or refresh rate should the compressed image quality fail a desired lossiness threshold (step 28) based, for example, on the number of CRC disparities relative to a threshold.
- the original image may be resent (block 32) with any increased bit rate and/or lane width and/or refresh rate.
- the panel may simply indicate whether a disparity threshold, provided by the display engine, was exceeded.
- the panel may include a register that stores the number of disparities.
- the platform may read the register, causing the panel to transmit the information in the register to the platform.
- graphics processing techniques described herein may be implemented in various hardware architectures.
- graphics functionality may be integrated within a chipset.
- a discrete graphics processor may be used.
- the graphics functions may be implemented by a general purpose processor, including a multicore processor.
- FIG. 4 illustrates an embodiment of a system 700.
- system 700 may be a media system although system 700 is not limited to this context.
- system 700 may be incorporated into a personal computer (PC), laptop computer, ultra-laptop computer, tablet, touch pad, portable computer, handheld computer, palmtop computer, personal digital assistant (PDA), cellular telephone, combination cellular telephone/PDA, television, smart device (e.g., smart phone, smart tablet or smart television), mobile internet device (MID), messaging device, data communication device, and so forth.
- PC personal computer
- PDA personal digital assistant
- cellular telephone combination cellular telephone/PDA
- television smart device (e.g., smart phone, smart tablet or smart television), mobile internet device (MID), messaging device, data communication device, and so forth.
- smart device e.g., smart phone, smart tablet or smart television
- MID mobile internet device
- system 700 comprises a platform 702 coupled to a display 720.
- Platform 702 may receive content from a content device such as content services device(s) 730 or content delivery device(s) 740 or other similar content sources.
- a navigation controller 750 comprising one or more navigation features may be used to interact with, for example, platform 702 and/or display 720. Each of these components is described in more detail below.
- platform 702 may comprise any combination of a chipset 705, processor 710, memory 712, storage 714, graphics subsystem 715,
- Chipset 705 may provide intercommunication among processor 710, memory 712, storage 714, graphics subsystem 715, applications 716 and/or radio 718.
- chipset 705 may include a storage adapter (not depicted) capable of providing intercommunication with storage 714.
- Processor 710 may be implemented as Complex Instruction Set Computer (CISC) or Reduced Instruction Set Computer (RISC) processors, x86 instruction set compatible processors, multi-core, or any other microprocessor or central processing unit (CPU).
- processor 710 may comprise dual- core processor(s), dual-core mobile processor(s), and so forth. The processor may implement the sequence of Figure 3 together with memory 712.
- Memory 712 may be implemented as a volatile memory device such as, but not limited to, a Random Access Memory (RAM), Dynamic Random Access Memory (DRAM), or Static RAM (SRAM).
- RAM Random Access Memory
- DRAM Dynamic Random Access Memory
- SRAM Static RAM
- Storage 714 may be implemented as a non-volatile storage device such as, but not limited to, a magnetic disk drive, optical disk drive, tape drive, an internal storage device, an attached storage device, flash memory, battery backed- up SDRAM (synchronous DRAM), and/or a network accessible storage device.
- storage 714 may comprise technology to increase the storage performance enhanced protection for valuable digital media when multiple hard drives are included, for example.
- Graphics subsystem 715 may perform processing of images such as still or video for display.
- Graphics subsystem 715 may be a graphics processing unit (GPU) or a visual processing unit (VPU), for example.
- An analog or digital interface may be used to communicatively couple graphics subsystem 715 and display 720.
- the interface may be any of a High-Definition Multimedia Interface, DisplayPort, wireless HDMI, and/or wireless HD compliant techniques.
- Graphics subsystem 715 could be integrated into processor 710 or chipset 705.
- Graphics subsystem 715 could be a stand-alone card communicatively coupled to chipset 705.
- graphics and/or video processing techniques described herein may be implemented in various hardware architectures.
- graphics and/or video functionality may be integrated within a chipset.
- a discrete graphics and/or video processor may be used.
- the graphics and/or video functions may be implemented by a general purpose processor, including a multi-core processor.
- the functions may be implemented in a consumer electronics device.
- Radio 718 may include one or more radios capable of transmitting and receiving signals using various suitable wireless communications techniques.
- Such techniques may involve communications across one or more wireless networks.
- Exemplary wireless networks include (but are not limited to) wireless local area networks (WLANs), wireless personal area networks (WPANs), wireless metropolitan area network (WMANs), cellular networks, and satellite networks.
- WLANs wireless local area networks
- WPANs wireless personal area networks
- WMANs wireless metropolitan area network
- cellular networks and satellite networks.
- radio 718 may operate in accordance with one or more applicable standards in any version.
- display 720 may comprise any television type monitor or display.
- Display 720 may comprise, for example, a computer display screen, touch screen display, video monitor, television-like device, and/or a television.
- Display 720 may be digital and/or analog.
- display 720 may be a
- display 720 may be a transparent surface that may receive a visual projection.
- projections may convey various forms of information, images, and/or objects.
- projections may be a visual overlay for a mobile augmented reality (MAR) application.
- MAR mobile augmented reality
- platform 702 may display user interface 722 on display 720.
- content services device(s) 730 may be hosted by any national, international and/or independent service and thus accessible to platform 702 via the Internet, for example.
- Content services device(s) 730 may be coupled to platform 702 and/or to display 720.
- Platform 702 and/or content services device(s) 730 may be coupled to a network 760 to communicate (e.g., send and/or receive) media information to and from network 760.
- Content delivery device(s) 740 also may be coupled to platform 702 and/or to display 720.
- content services device(s) 730 may comprise a cable television box, personal computer, network, telephone, Internet enabled devices or appliance capable of delivering digital information and/or content, and any other similar device capable of unidirectionally or bidirectionally communicating content between content providers and platform 702 and/display 720, via network 760 or directly. It will be appreciated that the content may be communicated
- Examples of content may include any media information including, for example, video, music, medical and gaming information, and so forth.
- Content services device(s) 730 receives content such as cable television programming including media information, digital information, and/or other content.
- content providers may include any cable or satellite television or radio or Internet content providers. The provided examples are not meant to limit the applicable embodiments.
- platform 702 may receive control signals from navigation controller 750 having one or more navigation features.
- the navigation features of controller 750 may be used to interact with user interface 722, for example.
- navigation controller 750 may be a pointing device that may be a computer hardware component (specifically human interface device) that allows a user to input spatial (e.g., continuous and multi-dimensional) data into a computer.
- GUI graphical user interfaces
- televisions and monitors allow the user to control and provide data to the computer or television using physical gestures.
- Movements of the navigation features of controller 750 may be echoed on a display (e.g., display 720) by movements of a pointer, cursor, focus ring, or other visual indicators displayed on the display.
- a display e.g., display 720
- the navigation features located on navigation controller 750 may be mapped to virtual navigation features displayed on user interface 722, for example.
- controller 750 may not be a separate component but integrated into platform 702 and/or display 720. Embodiments, however, are not limited to the elements or in the context shown or described herein.
- drivers may comprise technology to enable users to instantly turn on and off platform 702 like a television with the touch of a button after initial boot-up, when enabled, for example.
- Program logic may allow platform 702 to stream content to media adaptors or other content services device(s) 730 or content delivery device(s) 740 when the platform is turned "off.”
- chip set 705 may comprise hardware and/or software support for 5.1 surround sound audio and/or high definition 7.1 surround sound audio, for example.
- Drivers may include a graphics driver for integrated graphics platforms.
- the graphics driver may comprise a peripheral component
- PCI interconnect Express
- any one or more of the components shown in system 700 may be integrated.
- platform 702 and content services device(s) 730 may be integrated, or platform 702 and content delivery device(s) 740 may be integrated, or platform 702, content services device(s) 730, and content delivery device(s) 740 may be integrated, for example.
- platform 702 and display 720 may be an integrated unit. Display 720 and content service device(s) 730 may be integrated, or display 720 and content delivery device(s) 740 may be integrated, for example. These examples are not meant to be scope limiting.
- system 700 may be implemented as a wireless system, a wired system, or a combination of both.
- system 700 may include components and interfaces suitable for communicating over a wireless shared media, such as one or more antennas, transmitters, receivers, transceivers, amplifiers, filters, control logic, and so forth.
- a wireless shared media may include portions of a wireless spectrum, such as the RF spectrum and so forth.
- system 700 may include components and interfaces suitable for communicating over wired communications media, such as input/output (I/O) adapters, physical connectors to connect the I/O adapter with a corresponding wired communications medium, a network interface card (NIC), disc controller, video controller, audio controller, and so forth.
- wired communications media may include a wire, cable, metal leads, printed circuit board (PCB), backplane, switch fabric, semiconductor material, twisted-pair wire, co-axial cable, fiber optics, and so forth.
- Platform 702 may establish one or more logical or physical channels to communicate information.
- the information may include media information and control information.
- Media information may refer to any data representing content meant for a user. Examples of content may include, for example, data from a voice conversation, videoconference, streaming video, electronic mail ("email") message, voice mail message, alphanumeric symbols, graphics, image, video, text and so forth. Data from a voice conversation may be, for example, speech information, silence periods, background noise, comfort noise, tones and so forth.
- Control information may refer to any data representing commands, instructions or control words meant for an automated system. For example, control information may be used to route media information through a system, or instruct a node to process the media information in a predetermined manner. The embodiments, however, are not limited to the elements or in the context shown or described in Figure 4.
- system 700 may be embodied in varying physical styles or form factors.
- Figure 5 illustrates embodiments of a small form factor device 800 in which system 700 may be embodied.
- device 800 may be implemented as a mobile computing device having wireless capabilities.
- a mobile computing device may refer to any device having a
- examples of a mobile computing device may include a personal computer (PC), laptop computer, ultra-laptop computer, tablet, touch pad, portable computer, handheld computer, palmtop computer, personal digital assistant (PDA), cellular telephone, combination cellular telephone/PDA, television, smart device (e.g., smart phone, smart tablet or smart television), mobile internet device (MID), messaging device, data communication device, and so forth.
- PC personal computer
- laptop computer ultra-laptop computer
- tablet touch pad
- portable computer handheld computer
- palmtop computer personal digital assistant
- PDA personal digital assistant
- cellular telephone combination cellular telephone/PDA
- television smart device (e.g., smart phone, smart tablet or smart television), mobile internet device (MID), messaging device, data communication device, and so forth.
- smart device e.g., smart phone, smart tablet or smart television
- MID mobile internet device
- Examples of a mobile computing device also may include computers that are arranged to be worn by a person, such as a wrist computer, finger computer, ring computer, eyeglass computer, belt-clip computer, arm-band computer, shoe computers, clothing computers, and other wearable computers.
- a mobile computing device may be implemented as a smart phone capable of executing computer applications, as well as voice communications and/or data communications.
- voice communications and/or data communications may be described with a mobile computing device implemented as a smart phone by way of example, it may be appreciated that other embodiments may be implemented using other wireless mobile computing devices as well. The embodiments are not limited in this context.
- One example embodiment may be a method comprising compressing data at a compression ratio, sending, from a display engine, compressed data across a display interface to a display panel, using a checksum to enable the display panel to determine if data was lost in compression, if so, receiving information from the display panel to indicate compression disparities; and adapting the compression based on the information from the display panel.
- the method wherein, depending on the information, adapting the compression includes changing at least one of lane width, bit rate, and refresh rate.
- the method may include using compression to reduce at least one of lane width, bit rate, or refresh rate.
- the method may include using compression to reduce power consumption.
- the method may include choosing the compression ratio to minimize lane width and bit rate.
- receiving information includes receiving information that indicates a number of disparities.
- receiving information includes reading a register on the display panel.
- a method comprising receiving, in a display panel, compressed data and a checksum across a display interface, decompressing the compressed data, calculating another checksum for the decompressed data, comparing the another checksum to the received checksum, and transmitting an indication of the number of disparities to said display engine.
- the method may include storing the number of disparities in a register readable by a platform coupled to the panel.
- Another example embodiment may be one or more non-transitory computer readable media storing instructions executed by a processor to perform a sequence comprising compressing data at a compression ratio, sending, from a display engine, compressed data across a display interface to a display panel, using a checksum to enable the display panel to determine if data was lost in compression, if so, receiving information from the display panel to indicate compression disparities; and adapting the compression based on the information from the display panel.
- the media wherein, depending on the information, adapting the compression includes changing at least one of lane width, bit rate, and refresh rate.
- the media may include said sequence including using compression to reduce at least one of lane width, bit rate, or refresh rate.
- the media may include said sequence including using compression to reduce power consumption.
- the media may include said sequence including choosing the compression ratio to minimize lane width and bit rate.
- receiving information includes receiving information that indicates a number of disparities.
- the media wherein receiving information includes reading a register on the display panel.
- In another example embodiment may be an apparatus comprising a processor to compress data at a compression ratio, send, from a display engine, compressed data across a display interface to a display panel, use a checksum to enable the display panel to determine if data was lost in compression, if so, receive information from the display panel to indicate compression disparities, and adapt the compression based on the information from the display panel and a storage coupled to said processor.
- the apparatus wherein, depending on the information, said processor to adapt the compression includes changing at least one of lane width, bit rate, and refresh rate.
- the apparatus of said processor to choose the compression ratio to minimize lane width and bit rate.
- the apparatus of said processor to receive information by receiving information that indicates a number of disparities.
- the apparatus of said processor to receive information by reading a register on the display panel.
- the apparatus of said processor including a display panel communicatively coupled to the processor.
- the apparatus of said processor including a battery coupled to the processor.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Quality & Reliability (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Software Systems (AREA)
- Controls And Circuits For Display Device (AREA)
- Digital Computer Display Output (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580027612.2A CN106416231B (en) | 2014-06-26 | 2015-06-25 | Method and apparatus for display interface bandwidth modulation, computer readable medium |
KR1020167032979A KR102241186B1 (en) | 2014-06-26 | 2015-06-25 | Display interface bandwidth modulation |
JP2016567919A JP6389279B2 (en) | 2014-06-26 | 2015-06-25 | Display interface bandwidth modulation |
EP15812561.7A EP3162050A4 (en) | 2014-06-26 | 2015-06-25 | Display interface bandwidth modulation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/315,667 US10049002B2 (en) | 2014-06-26 | 2014-06-26 | Display interface bandwidth modulation |
US14/315,667 | 2014-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015200624A1 true WO2015200624A1 (en) | 2015-12-30 |
Family
ID=54931996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2015/037673 WO2015200624A1 (en) | 2014-06-26 | 2015-06-25 | Display interface bandwidth modulation |
Country Status (7)
Country | Link |
---|---|
US (1) | US10049002B2 (en) |
EP (1) | EP3162050A4 (en) |
JP (1) | JP6389279B2 (en) |
KR (1) | KR102241186B1 (en) |
CN (1) | CN106416231B (en) |
TW (1) | TWI600312B (en) |
WO (1) | WO2015200624A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10504259B2 (en) | 2017-04-24 | 2019-12-10 | Intel Corporation | Separately processing regions or objects or interest from a render engine to a display engine or a display panel |
US10691529B2 (en) * | 2018-06-20 | 2020-06-23 | Intel Corporation | Supporting random access of compressed data |
US11551632B2 (en) * | 2020-06-26 | 2023-01-10 | Ati Technologies Ulc | Accelerated frame transmission |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070002059A1 (en) * | 2005-06-29 | 2007-01-04 | Intel Corporation | Pixel data compression from controller to display |
US20070296822A1 (en) * | 2006-06-09 | 2007-12-27 | Yin-Chun Blue Lan | Method and device for wireless video communication |
KR20130051817A (en) * | 2011-11-10 | 2013-05-21 | 엘지디스플레이 주식회사 | Timing controller and method for compressing target register configuration data |
US20140146098A1 (en) * | 2012-11-28 | 2014-05-29 | Renesas Sp Drivers Inc. | Image processing circuit for image compression and decompression and display panel driver incorporating the same |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4742544A (en) * | 1984-07-09 | 1988-05-03 | Kupnicki Richard A | Television transmission network with scrambling and descrambling |
US5410360A (en) * | 1991-06-14 | 1995-04-25 | Wavephore, Inc. | Timing control for injecting a burst and data into a video signal |
US5208666A (en) * | 1991-10-25 | 1993-05-04 | Tektronix, Inc. | Error detection for digital television equipment |
US5692093A (en) * | 1993-01-08 | 1997-11-25 | Srt, Inc. | Method and apparatus for eliminating television commercial messages |
US5872784A (en) * | 1993-10-20 | 1999-02-16 | Lsi Logic Corporation | High speed single chip digital video network apparatus |
JPH08116274A (en) | 1994-10-18 | 1996-05-07 | Fuji Xerox Co Ltd | Data compression and expansion system and disk array device |
EP0901282B1 (en) * | 1997-09-03 | 2006-06-28 | Hitachi, Ltd. | Method for recording and reproducing electronic watermark information |
US6138164A (en) * | 1997-11-14 | 2000-10-24 | E-Parcel, Llc | System for minimizing screen refresh time using selectable compression speeds |
JP2001285237A (en) | 2000-03-29 | 2001-10-12 | Matsushita Electric Ind Co Ltd | Ofdm signal transmitter-receiver |
US8077679B2 (en) * | 2001-03-28 | 2011-12-13 | Qualcomm Incorporated | Method and apparatus for providing protocol options in a wireless communication system |
US6909753B2 (en) * | 2001-12-05 | 2005-06-21 | Koninklijke Philips Electronics, N.V. | Combined MPEG-4 FGS and modulation algorithm for wireless video transmission |
US20060026181A1 (en) * | 2004-05-28 | 2006-02-02 | Jeff Glickman | Image processing systems and methods with tag-based communications protocol |
EP1732331A1 (en) * | 2005-06-08 | 2006-12-13 | BRITISH TELECOMMUNICATIONS public limited company | Video coding |
JP2007174035A (en) * | 2005-12-20 | 2007-07-05 | Matsushita Electric Ind Co Ltd | Moving picture communication apparatus and moving picture communication method |
JP3996176B2 (en) * | 2006-02-13 | 2007-10-24 | 富士通株式会社 | Image data processing apparatus, image data processing method, and image data processing program |
JP4935817B2 (en) * | 2006-08-16 | 2012-05-23 | 富士通株式会社 | Multi-channel data transfer apparatus and method |
JP4845818B2 (en) | 2007-06-15 | 2011-12-28 | 三菱電機株式会社 | Adaptive modulation control method and communication apparatus |
WO2009005301A1 (en) * | 2007-07-02 | 2009-01-08 | Lg Electronics Inc. | Digital broadcasting system and data processing method |
US8527267B2 (en) * | 2008-12-04 | 2013-09-03 | Linear Accoustic, Inc. | Adding additional data to encoded bit streams |
US9369759B2 (en) | 2009-04-15 | 2016-06-14 | Samsung Electronics Co., Ltd. | Method and system for progressive rate adaptation for uncompressed video communication in wireless systems |
US20110078536A1 (en) * | 2009-09-28 | 2011-03-31 | Kyungtae Han | Using Motion Change Detection to Reduce Power Consumption of Display Systems |
US8767820B2 (en) * | 2009-11-11 | 2014-07-01 | Dell Products, Lp | Adaptive display compression for wireless transmission of rendered pixel data |
JP5553663B2 (en) | 2010-03-31 | 2014-07-16 | 日立コンシューマエレクトロニクス株式会社 | Video transmission device, video reception device, video transmission system |
JP2011237490A (en) * | 2010-05-06 | 2011-11-24 | Canon Inc | Data processor, display control method in data processor, and its program |
JP5482629B2 (en) * | 2010-11-16 | 2014-05-07 | 株式会社Jvcケンウッド | Wireless device and communication method |
CN102014264A (en) * | 2010-12-30 | 2011-04-13 | 广州市聚晖电子科技有限公司 | Implementation method for high-definition video design based on high-definition multimedia interface (HDMI) standard |
US8842081B2 (en) * | 2011-01-13 | 2014-09-23 | Synaptics Incorporated | Integrated display and touch system with displayport/embedded displayport interface |
US8745366B2 (en) * | 2011-03-31 | 2014-06-03 | Nvidia Corporation | Method and apparatus to support a self-refreshing display device coupled to a graphics controller |
US10136127B2 (en) * | 2011-11-25 | 2018-11-20 | Maxell Ltd. | Image transmission device, image transmission method, image reception device, and image reception method |
CN102404578A (en) * | 2011-12-21 | 2012-04-04 | 中国科学院自动化研究所 | Multi-channel video transmitting system and method |
KR101482828B1 (en) * | 2011-12-21 | 2015-01-14 | 인텔 코오퍼레이션 | Perceptual lossless compression of image data for transmission on uncompressed video interconnects |
KR101158876B1 (en) * | 2012-03-09 | 2012-06-25 | 엘지디스플레이 주식회사 | Display device and method for controlling panel self refresh operation thereof |
CN102572440B (en) * | 2012-03-15 | 2013-12-18 | 天津大学 | Multi-viewpoint video transmission method based on depth map and distributed video coding |
US8749541B2 (en) * | 2012-04-05 | 2014-06-10 | Apple Inc. | Decreasing power consumption in display devices |
JP6365899B2 (en) * | 2013-08-22 | 2018-08-01 | ソニー株式会社 | Signal processing apparatus, signal processing method, program, and signal transmission system |
US9332216B2 (en) * | 2014-03-12 | 2016-05-03 | Sony Computer Entertainment America, LLC | Video frame rate compensation through adjustment of vertical blanking |
CN107079155A (en) * | 2014-03-25 | 2017-08-18 | 云巅控股有限公司 | Video content classification |
-
2014
- 2014-06-26 US US14/315,667 patent/US10049002B2/en active Active
-
2015
- 2015-05-20 TW TW104116067A patent/TWI600312B/en active
- 2015-06-25 WO PCT/US2015/037673 patent/WO2015200624A1/en active Application Filing
- 2015-06-25 EP EP15812561.7A patent/EP3162050A4/en not_active Withdrawn
- 2015-06-25 CN CN201580027612.2A patent/CN106416231B/en active Active
- 2015-06-25 KR KR1020167032979A patent/KR102241186B1/en active IP Right Grant
- 2015-06-25 JP JP2016567919A patent/JP6389279B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070002059A1 (en) * | 2005-06-29 | 2007-01-04 | Intel Corporation | Pixel data compression from controller to display |
US20070296822A1 (en) * | 2006-06-09 | 2007-12-27 | Yin-Chun Blue Lan | Method and device for wireless video communication |
KR20130051817A (en) * | 2011-11-10 | 2013-05-21 | 엘지디스플레이 주식회사 | Timing controller and method for compressing target register configuration data |
US20140146098A1 (en) * | 2012-11-28 | 2014-05-29 | Renesas Sp Drivers Inc. | Image processing circuit for image compression and decompression and display panel driver incorporating the same |
Non-Patent Citations (2)
Title |
---|
KYUNGTAE HAN ET AL.: "Using Checksum to Reduce Power Consumption of Display Systems for Low-Motion Content", IEEE INTERNATIONAL CONFERENCE ON COMPUTER DESIGN, 4 October 2009 (2009-10-04), Lake Tahoe, CA, pages 47 - 53, XP031627931, Retrieved from the Internet <URL:http://ieeexplore.ieee.org/search/searchresult.jsp?newsearch=true&queryText=11139764> * |
See also references of EP3162050A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP3162050A4 (en) | 2017-12-20 |
US20150381990A1 (en) | 2015-12-31 |
US10049002B2 (en) | 2018-08-14 |
CN106416231A (en) | 2017-02-15 |
TW201611582A (en) | 2016-03-16 |
KR20160145192A (en) | 2016-12-19 |
EP3162050A1 (en) | 2017-05-03 |
CN106416231B (en) | 2019-12-17 |
JP2017528932A (en) | 2017-09-28 |
JP6389279B2 (en) | 2018-09-12 |
KR102241186B1 (en) | 2021-04-15 |
TWI600312B (en) | 2017-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10096080B2 (en) | Power optimization with dynamic frame rate support | |
US9524681B2 (en) | Backlight modulation over external display interfaces to save power | |
US9552781B2 (en) | Content adaptive LCD backlight control | |
US9754345B2 (en) | Compression and decompression of graphics data using pixel region bit values | |
US20150178032A1 (en) | Apparatuses and methods for using remote multimedia sink devices | |
CN110121887B (en) | Video stream branching apparatus for bandwidth management and method of bandwidth management | |
CN106416231B (en) | Method and apparatus for display interface bandwidth modulation, computer readable medium | |
EP2797049A2 (en) | Color buffer compression | |
EP3140807B1 (en) | Clustering and encoding for color compression | |
US20160005379A1 (en) | Image Generation | |
US9552620B2 (en) | Depth offset compression | |
US10785512B2 (en) | Generalized low latency user interaction with video on a diversity of transports | |
US20150170315A1 (en) | Controlling Frame Display Rate | |
JP6240139B2 (en) | Perceptual lossless compression of image data transmitted over uncompressed video interconnects | |
JP5841268B2 (en) | Perceptual lossless compression of image data transmitted over uncompressed video interconnects | |
US9886740B2 (en) | Degradation coverage-based anti-aliasing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15812561 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016567919 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2015812561 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2015812561 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20167032979 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |