JP6240139B2 - Perceptual lossless compression of image data transmitted over uncompressed video interconnects - Google Patents

Description

  Video resolution and frame rate are increasing every year at a fairly dramatic pace. For example, the resolution is transitioning from SD (standard definition, eg 480p) to HD (high definition, eg 1080p) and quad HD (eg 4k × 2k), the frame rate is 60Hz to 120Hz, and Transitioning to 240 Hz. In addition, there is an increasing demand for increased color bit accuracy (eg, deep color) in display-enabled platforms. These situations include HDMI® (high definition multimedia interface, eg, HDMI® specification, version 1.3a, November 10, 2006, HDMI Licensing), components, and LVDS (low voltage For non-compressed video interconnections such as differential signaling, eg TIA / EIA-644-A Low Voltage Differential Signaling (LVDS) interface circuit electrical features, February 1, 2001, American Telecommunication Industry Association) There may be a heavy load. In particular, due to electrical and cost issues, these interconnects may lag in implementing frame rate and / or resolution increases. For example, traditional HDMI solutions may currently lack support for quad HD resolution at 60 Hz.

  Various advantages of embodiments of the present invention will become apparent to those skilled in the art upon reading the following specification and appended claims, and upon reference to the following drawings.

FIG. 3 is a block diagram of an example of an uncompressed video interface between a transmitting device and a receiving device according to one embodiment. 2 is a flowchart of an example method for transmitting compressed video over an uncompressed video interconnect according to one embodiment. 2 is a flowchart of an example method for receiving compressed video from an uncompressed video interconnect according to one embodiment. 1 is a block diagram of an example computing platform according to one embodiment. FIG. 1 is a block diagram of an example system having a navigation controller according to one embodiment. FIG. 1 is a block diagram of an example of a system having a small form factor according to one embodiment. FIG.

  Referring now to FIG. 1, a video interface 10 between a sending device 12 and a receiving device 14 is shown. The transmission device 12 can be a high-resolution video source such as a Blu-ray disc player, HD receiver, etc., and the reception device 14 is a suitable display device such as an LCD (Liquid Crystal Display), LED (Light Emitting Diode) display, touch screen, etc. It can be. In the illustrated example, the devices 12, 14 include uncompressed video interconnects 18, 20 and uncompressed video media (eg, cable) 16, eg, HDMI, component, LVDS, V-by-One (eg, , V-by-One ™ HS standard, version 1.3, July 7, 2010, THine Electronics), or iDP (internal DisplayPort, eg IDS standard version 1.0, April 2010, VESA ) Coupled to each other via a cable or the like Interconnects 18, 20 and media 16 can transfer compressed video due to non-deterministic bit / pixel (bpp) reduction, latency variation (eg, encoding and decoding), cost, and quality concerns. It can be regarded as uncompressed in that it is not supported in the past. However, the illustrated interface 10 uses a compression-based image encoder 22 and a compression-based image decoder 24 to eliminate each of these concerns.

  In particular, the image encoder 22 generates a compressed bitstream 26 based on the input pixel signal 28 and transmits the compressed bitstream 26 to the uncompressed video interconnect 18, thereby allowing the uncompressed video interconnect via the medium 16. 20 can be transmitted. In addition, the image decoder 24 may receive the compressed bitstream 26 from the uncompressed video interconnect 20 and generate an output pixel signal 30 based on the compressed bitstream 26. As will be described in more detail below, the illustrated compressed bitstream 26 guaranteed reduced deterministic bits per pixel and fixed encoding and fixed decoding latencies. Further, the interface 10 can be a low cost solution that does not provide any perceived quality loss in the output pixel signal 30.

  FIG. 2 illustrates a method 32 for sending compressed video over an uncompressed video interconnect. Method 32 may be used in a compression-based image encoder such as image encoder 22 (FIG. 1) in a programmable logic array (PLA), a field programmable gate array (FPGA), a complex programmable logic device (CPLD), an application specific integrated circuit (ASIC). ), Fixed function hardware using circuit technology such as complementary metal oxide semiconductor (CMOS) or transistor-transistor logic (TTL) technology, or random access memory in configurable logic such as any combination thereof ( RAM), read only memory (ROM), programmable ROM (PROM), flash memory, can be implemented as a set of executable logical instructions stored on a machine readable or computer readable storage medium such as firmware . For example, computer programs that perform the operations shown in method 32 include one or more programming including object oriented programming languages such as C ++ and conventional procedural programming languages such as “C” programming language or similar programming languages. Can be written in any combination of languages. Further, various aspects of method 32 may be implemented as embedded logic in a graphics processor using any of the circuit techniques described above.

  The illustrated processing block 34 provides for determining the supported resolution and number of bits per pixel for the uncompressed video interconnect. In this regard, certain interconnects, such as HDMI® interconnects, have a specific resolution (eg, 1920 × 1080 pixels) and a specific number of bits per pixel (eg, 8 bpp, 10 bpp, 12 bpp, 16 bpp) Can support. Thus, block 34 may include identifying a particular configuration of the uncompressed video interconnect in question, which accesses the appropriate tables / registers and is either off-line or non-real-time. Inquiring to a compressed video interconnect or the like can be included. In block 36, an input pixel signal may be received, and the illustrated block 38 performs compression of the pixel difference signal associated with the input pixel signal.

  For example, the input pixel signal may be associated with image and / or video content, and the input pixel signal may be RGB (red / green / blue) raw data, YCbCr (luminance, blue difference, red difference) raw data. Etc. can be included. In one example, the pixel difference module generates a pixel difference signal based on the input pixel signal and the pixel prediction signal, which is the difference between each pixel in the input pixel signal and the prediction of the pixel in question. Can be identified. Further, the pixel difference signal can be compressed so that it is not perceptually lossy.

  In particular, the pixel prediction module can use the reference signal to predict the pixel value of a pixel in the image, and the prediction can take into account the associated pixel. For example, the pixel prediction module can evaluate a combination of spatial and temporal neighboring pixels to predict the value of the pixel under consideration. Thus, the pixel difference module can compare each pixel with each pixel's prediction and output a pixel difference signal based on the comparison, where the pixel difference signal is the difference between the current pixel and the current pixel's prediction. Identify The compression module can be configured to receive the pixel difference signal, compress the pixel difference signal based on a value of the pixel difference signal, and generate a modified pixel difference signal based on the compression; and A compressed bitstream, such as compressed bitstream 26 (FIG. 1), can be generated based on the modified pixel difference signal.

  In particular, regarding the compression process, it can be determined whether the value of the pixel difference signal is below a certain threshold. For example, when the pixel difference signal includes an 8-bit difference value (for example, a red difference, a green difference, or a blue difference) in the range of 0 to 255, a threshold value of 16 can be used. If the value of the pixel difference signal is less than the threshold, one or more most significant bits (MSBs) of the pixel difference signal can be discarded. Therefore, in the example of the 8-bit difference value, four MSBs (for example, bits [7: 4]) can be discarded. In this regard, if the value of the pixel difference signal is less than the threshold, no information is lost because the upper bits in the pixel difference signal are zero.

  On the other hand, if it is determined that the pixel difference value is greater than or equal to the threshold, one or more least significant bits (LSBs) in the pixel difference signal can be discarded. Therefore, in the example of the 8-bit difference value, four LSBs (for example, bits [3: 0]) can be discarded. Of particular note is that if the pixel difference value is relatively high, the visual difference between the current pixel and its associated pixel may also be relatively high. For example, a high pixel difference value may indicate an edge at that pixel location in the image (eg, an abrupt color and / or intensity transition), and an abrupt transition may be any color / intensity from a visual point of view. Can be much more serious than small differences. Thus, an edge transition from a red shade to a blue shade can be encoded as an edge transition from pure red to pure blue without perceptual loss of content / quality in the image (e.g. , By destroying the LSB). Thus, the discarded bits may contain some information, but the information lost is unlikely to be perceptible by the human eye. Simply put, if the surrounding pixels do not have the same intensity level as the pixel in question, the human eye cannot accurately estimate the precise intensity and perceive when the LSB is discarded. Is not subject to loss.

  As already mentioned, a modified pixel difference signal can be generated based on the comparison, and the modified pixel difference signal is always compressed. Furthermore, the illustrated approach can achieve such guaranteed compression without incurring perceptual loss.

Other embodiments may be used depending on the situation. For example, in a scenario where one or more flag bits are used and embedded in a pixel difference signal with a modified compression configuration and 50% compression is the basis, the following pseudo code can be expanded:

In addition, adaptability based on various pixel encodings can be implemented. For example, the following pseudo code can be expanded for an example of encoding from 8 bits to 4 bits.

  Thus, a guaranteed deterministic level of compression can be achieved. The illustrated block 40 provides for setting one or more flag bits in the compressed bitstream based on compression (eg, as shown in the pseudocode above). In block 42, it may also be determined whether the resolution of the input pixel signal is greater than the supported resolution of the uncompressed video interconnect. If so, the compressed bitstream can be presented to the uncompressed video interconnect at block 44 as having a supported resolution. For example, an input pixel stream having a resolution of 3840 × 1080 pixels can be presented to the uncompressed video interconnect as having a resolution of 1920 × 1080 as long as it is a supported resolution of the uncompressed video interconnect. In such a case, two pixels, each 10 bits, can be packed into two pixels, each 5 bits, and the input pixel signal is supported per pixel, per pixel of the uncompressed video interconnect. It can have a number of bits equal to the number of bits.

  On the other hand, if it is determined at block 42 that the resolution of the input pixel signal is less than or equal to the supported resolution, block 46 may be per pixel, even if the input pixel signal may have more bits per pixel. The compressed bitstream can be presented to the uncompressed video interconnect as having a supported number of bits. For example, a 1920 × 1080 input pixel stream may have 16 bits per pixel before compression, whereas the compression process compresses it as an 8 bpp raw video signal (with a supported resolution of 1920 × 1080 pixels). A bitstream can be presented to the uncompressed video interconnect.

  FIG. 3 illustrates a method 48 for receiving compressed video. Method 48 includes RAM, ROM, PROM, flash memory in configurable logic such as PLA, FPGA, CPLD, fixed function hardware using circuit technology such as ASIC, CMOS, or TTL technology, or any combination thereof. Can be implemented in a compression-based image encoder, such as image encoder 24 (FIG. 1), as an executable set of logical instructions stored in a machine-readable or computer-readable storage medium, such as firmware. For example, computer program code for performing the operations shown in method 48 may include one or more object-oriented programming languages such as C ++ and conventional procedural programming languages such as “C” programming language or similar programming languages. Can be written in any combination of programming languages. Further, various aspects of method 48 may be implemented as embedded logic in a display controller using any of the circuit techniques described above.

  The illustrated processing block 50 provides for receiving a compressed bitstream from an uncompressed video interconnect, and at block 52 one or more flag bits in the compressed bitstream can be read. Block 54 may decompress the compressed bitstream based on the flag bits. In particular, the decompression process can include establishing a resolution for the output pixel signal that is greater than the supported resolution of the uncompressed video interconnect, where the number of bits per pixel of the output pixel signal is It can be equal to the number of bits supported per pixel of the connection. Similarly, the decompression process can include establishing a number of bits per pixel for the output pixel signal that is greater than the supported number of bits per pixel of the uncompressed video interconnect. The resolution can be equal to the supported resolution of the uncompressed video interconnect.

  Referring now to FIG. 4, a platform 56 is shown, which is a laptop, mobile internet device (MID), personal information terminal (PDA), media player, imaging device, etc., smartphone, smart tablet Mobile platform such as any smart device, or any combination thereof. The platform 56 may be a fixed platform such as a personal computer (PC), a server, a workstation, or a smart TV. The illustrated platform 56 includes a central processing unit (CPU, eg, main processor) 58 having an integrated memory controller (iMC) 62 that provides access to the system memory 60, which includes, for example, , Double data rate (DDR) synchronous dynamic RAM (SDRAM, eg, DDR3 SDRAM JEDEC standard JESD79-3C, April 2008) module. The module of the system memory 60 can be incorporated in, for example, a single inline memory module (SIMM), a dual inline memory module (DIMM), a small outline DIMM (SODIMM), or the like. The CPU 58 may also have one or more drivers 64 and / or processor cores (not shown), each core fully functioning with an instruction fetch unit, instruction decoder, level 1 (L1) cache, execution unit, etc. can do. The CPU 58 can alternatively communicate with an off-chip variation of the iMC 62, also known as the North Bridge, via a front-side bus or point-to-point fabric that interconnects the components within the platform 56. The CPU 58 can also execute an operating system (OS) 66 such as a Microsoft Windows (registered trademark) OS, a Linux (registered trademark) OS, or a Mac (Macintosh (registered trademark)) OS.

  The illustrated CPU 58 communicates with a platform controller hub (PCH) 68, also known as a south bridge, via a hub bus. The iMC 62 / CPU 58 and the PCH 68 are sometimes called a chip set. The CPU 58 can also be operatively connected to a network (not shown) through the PCH 68 via a network port (not shown). The display 70 (eg, touch screen, LCD, LED display) may also have an uncompressed video interconnect 72 that communicates with the uncompressed video interconnect 74 of the PCH 68 to allow the user to platform. Allows viewing of images and / or videos from 56. Thus, the interconnect 74 can be similar to the interconnect 18 (FIG. 1) already described, and the interconnect 72 can be similar to the interconnect 20 (FIG. 1) already described. The illustrated PCH 58 is also coupled to a storage device, which may include a hard drive 76, a ROM, an optical disk, a flash memory (not shown), and the like.

  The illustrated platform 56 also includes a dedicated graphics processing unit (GPU) 78 coupled to a dedicated graphics memory 80. Dedicated graphics memory 80 may include, for example, a GDDR (graphics DDR) or DDR SDRAM module, or any other memory technology suitable for supporting graphics rendering. The GPU 78 and the graphics memory 80 can be installed on a graphics / video card, and the GPU 78 is PCI Express Graphics (PEG: PCI Express Graphics, for example, peripheral device interconnection / PCI Express x16 graphics 150W-ATX specification). It can communicate with the CPU 58 via a graphics bus such as a 1.0, PCI standards body) bus or an accelerated graphics port (eg, AGP V3.0 interface specification, September 2002) bus. The graphics card can be integrated into the main CPU 58 die on the system motherboard and configured as a discrete card or the like on the motherboard. The GPU 78 can also execute one or more drivers 82 and can include an internal cache 84 that stores instructions and other data.

  The illustrated GPU 78 includes an image encoder 86, such as the image encoder 22 (FIG. 1) already discussed. Accordingly, the image encoder 86 compresses the pixel difference signal associated with the input image signal based on the value of the pixel difference signal, generates an encoded bitstream based on the compressed pixel difference signal, The compressed bitstream can be configured to be sent to the display 70 via the uncompressed video interconnects 74, 72. Display 70 may also include an image decoder (not shown), such as image decoder 24 previously discussed.

  Thus, embodiments can include a transmitting device having an uncompressed video interconnect and an image encoder. The image encoder may be configured to generate a compressed bitstream based on the input pixel signal and send the compressed bitstream to the uncompressed video interconnect.

  Embodiments can include a computer-readable storage medium having an instruction set that, when executed by a processor, causes a computer to generate a compressed bitstream based on an input pixel signal. The instructions can also cause the computer to send a compressed bitstream over the uncompressed video interconnect.

  In addition, embodiments can include a receiving device having an uncompressed video interconnect and an image decoder. The image decoder can be configured to receive a compressed bitstream from the uncompressed video interconnect and generate an output pixel signal based on the compressed bitstream.

  Other embodiments can include a computer-readable storage medium having an instruction set, which when executed by a processor causes a computer to receive a compressed bitstream from an uncompressed video interconnect. The instructions can also cause the computer to generate an output pixel signal based on the compressed bitstream.

  FIG. 5 illustrates one embodiment of a system 700. In an embodiment, system 700 may be a media system, but system 700 is not limited to this situation. For example, the system 700 is a personal computer (PC), laptop computer, ultra laptop computer, tablet, touchpad, portable computer, handheld computer, palmtop computer, personal information terminal (PDA), mobile phone, mobile phone / PDA. Combinations, televisions, smart devices (eg, smart phones, smart tablets, or smart TVs), mobile internet devices (MID), messaging devices, data communication devices, etc. can be incorporated.

  In an embodiment, system 700 includes a platform 702 that is coupled to a display 720. Platform 702 may receive content from content devices such as content service device (s) 730, content distribution device (s) 740, or other similar content sources. A navigation controller 750 comprising one or more navigation features can be used to interact with the platform 702 and / or the display 720, for example. Each of these components will be described in more detail later.

  In an embodiment, platform 702 may comprise any combination of chipset 705, processor 710, memory 712, storage 714, graphics subsystem 715, application 716, and / or wireless 718. Chipset 705 may provide intercommunication between processor 710, memory 712, storage device 714, graphics subsystem 715, application 716, and / or wireless 718. For example, chipset 705 can include a storage device adapter (not shown) that can provide intercommunication with storage device 714.

  The processor 710 is a complex instruction set computer (CISC) or reduced instruction set computer (RISC) processor, x86 instruction set compatible processor, multi-core or any other microprocessor or central processing unit. (CPU) can be implemented. In an embodiment, the processor 710 may include a dual core processor (s), a dual core mobile processor (s), and the like.

  Memory 712 may be implemented as a volatile memory device, such as, but not limited to, random access memory (RAM), dynamic random access memory (DRAM), or static RAM (SRAM).

  The storage device 714 is a magnetic disk drive, optical disk drive, tape drive, internal storage device, attached storage device, flash memory, battery backup SDRAM (synchronous DRAM), and / or network accessible storage device, etc. The present invention can be implemented as a nonvolatile memory device that is not limited to these. In an embodiment, the storage device 714 may include technology to increase storage performance enhancement protection to valuable value digital media, for example, when multiple hard drives are included.

  The graphics subsystem 715 can perform processing of images such as still images or videos for display. The graphics subsystem 715 can be, for example, a graphics processing unit (GPU) or a visual processing unit (VPU). The graphics subsystem 715 and the display 720 can be communicatively coupled using an analog or digital interface. For example, the interface may be any of a high definition multimedia interface, DisplayPort, wireless HDMI, and / or wireless HD compliant techniques. Graphics subsystem 715 can be integrated into processor 710 or chipset 405. Graphics subsystem 715 may be a stand-alone card that is communicatively coupled to chipset 405.

  The graphics and / or video processing techniques described herein may be implemented with various hardware architectures. For example, graphics and / or video functions can be integrated into the chipset. Alternatively, discrete graphics and / or video processors can be used. As yet another embodiment, the graphics and / or video functions can be implemented by a general purpose processor including a multi-core processor. In further embodiments, these functions can be implemented in a consumer electronic device.

  Radio 718 may include one or more radios capable of transmitting and receiving signals using a variety of suitable wireless communication techniques. Such techniques can include communication across one or more wireless networks. Exemplary wireless networks include (but are not limited to) a wireless local area network (WLAN), a wireless personal area network (WPAN), a wireless metropolitan area network (WMAN), a cellular network, and a satellite network. When communicating across such a network, the radio 718 can operate according to any version of one or more applicable standards.

  In embodiments, the display 720 can include any television type monitor or display. The display 720 can include, for example, a computer display screen, a touch screen display, a video monitor, a television-like device, and / or a television. Display 720 can be digital and / or analog. In an embodiment, display 720 may be a holographic display. The display 720 can also be a transparent surface that can receive visual projections. Such projections can convey various forms of information, images, and / or objects. For example, such a projection can be a visual overlay for mobile augmented reality (MAR) applications. Under control of one or more applications 716, platform 702 can display user interface 722 on display 720.

  In an embodiment, the content service device (s) 730 can be hosted by any national, international, and / or independent service and thus accessible to the platform 702 via, for example, the Internet It is. Content service device (s) 730 may be coupled to platform 702 and / or display 720. Platform 702 and / or content service device (s) 730 may be coupled to network 760 to communicate (eg, send and / or receive) media information to and from network 760. Content distribution device (s) 740 may also be coupled to platform 702 and / or display 720.

  In an embodiment, the content service device (s) 730 may be a cable television box, personal computer, network, telephone, Internet-enabled device or home appliance capable of delivering digital information and / or content, and a network 760. Or directly, any other similar device capable of unidirectional or bidirectional communication of content between the content provider and the platform 702 and / or display 720 may be included. It will be appreciated that content can be communicated unidirectionally and / or bidirectionally via network 760 to and from any one of the components in system 700 and content providers. Examples of content can include any media information including, for example, video, music, medical information, game information, and the like.

  Content service device (s) 730 receives content such as cable television programs that include media information, digital information, and / or other content. Examples of content providers can include any cable or satellite television or radio or Internet content provider. The provided examples are not intended to limit embodiments of the invention.

  In an embodiment, the platform 702 may receive control signals from a navigation controller 750 having one or more navigation features. The navigation features of the controller 750 can be used to interact with the user interface 422, for example. In an embodiment, the navigation controller 750 is a pointing device that can be a computer hardware component (especially a human interface device) that allows a user to enter spatial (eg, continuous multi-dimensional) data into a computer. be able to. Many systems such as graphical user interfaces (GUIs) and televisions and monitors allow users to control and provide data to computers or televisions using physical gestures.

  Movement of the navigation features of the controller 750 can be echoed on a display (eg, display 720) by movement of a pointer, cursor, focus ring, or other visual indicator displayed on the display. For example, under the control of the software application 716, navigation features placed on the navigation controller 750 can be mapped to virtual navigation features displayed on the user interface 722, for example. In embodiments, the controller 750 may not be a separate component and may be integrated into the platform 702 and / or the display 720. However, embodiments are not limited to the elements or circumstances shown or described herein.

  In an embodiment, a driver (not shown) includes technology that, when enabled, enables a user to instantly turn on and off the platform 702 like a television by touching a button after initial bootup, for example. Can do. The program logic streams the content to a media adapter, or other content service device (s) 730, or content distribution device (s) 740 when the platform 702 is "off". Can be made possible. In addition, the chipset 705 can include hardware support and / or software support for 5.1 surround sound audio and / or high definition 7.1 surround sound audio, for example. The driver can include an integrated graphics platform graphics driver. In an embodiment, the graphics driver may include a peripheral component interconnect (PCI) express graphics card.

  In various embodiments, any one or more of the components shown in system 700 can be integrated. For example, platform 702 and content service device (s) 730 can be integrated, and platform 702 and content distribution device (s) 740 can be integrated, eg, platform 702, content Service device (s) 730 and content distribution device (s) 740 may also be integrated. In various embodiments, platform 702 and display 720 may be an integrated unit. For example, the display 720 and the content service device (s) 730 can be integrated, or the display 720 and the content distribution device (s) 740 can be integrated. These examples are not meant to limit the invention.

  In various embodiments, the system 700 can be implemented as a wireless system, a wired system, or a combination of both. When implemented as a wireless system, system 700 includes components suitable for communicating via a wireless shared medium such as one or more antennas, transmitters, receivers, transceivers, amplifiers, filters, control logic, and the like. An interface can be included. As an example of the wireless shared medium, a portion of a wireless spectrum such as an RF spectrum can be cited. When implemented as a wired system, the system 700 includes an input / output (I / O) adapter, a physical connector that connects the I / O adapter to a corresponding wired communication medium, a network interface card (NIC), a disk controller, Components and interfaces suitable for communicating via a wired communication medium such as a video controller, audio controller, etc. can be included. Examples of wired communication media include wires, cables, metal leads, printed circuit boards (PCBs), backplanes, switch fabrics, semiconductor materials, twisted pairs, coaxial cables, optical fibers, and the like.

  Platform 702 can establish one or more logical or physical channels to communicate information. The information can include media information and control information. Media information can refer to any data representing content for a user. Examples of content include data from voice conversations, video conferencing, streaming video, e-mail (“e-mail”) messages, voice mail messages, alphanumeric symbols, graphics, images, videos, text, etc. Can be included. Data from voice conversation can be, for example, speech information, silence periods, background noise, comfort noise, tones, and the like. Control information can refer to any data representing commands, instructions, or control words for an automated system. For example, the control information can be used to route media information through the system or the node can be instructed to process the media information in a predetermined manner. However, embodiments are not limited to the elements or situations shown or described in FIG.

  As described above, the system 700 can be implemented in various physical styles or form factors. FIG. 6 illustrates an embodiment of a small form factor device 800 that can implement the system 700. For example, in an embodiment, device 800 can be implemented as a mobile computing device with wireless capabilities. A mobile computing device may refer to any device that has a processing system and a mobile power source or power supply, such as one or more batteries.

  As described above, examples of mobile computing devices include personal computers (PCs), laptop computers, ultra laptop computers, tablets, touchpads, portable computers, handheld computers, palmtop computers, personal information terminals (PDAs). Mobile phones, cell phone / PDA combinations, televisions, smart devices (eg, smart phones, smart tablets, or smart TVs), mobile internet devices (MID), messaging devices, data communication devices, and the like.

  Examples of mobile computing devices are configured to be worn by people such as wrist computers, finger computers, ring computers, eyeglass computers, belt clip computers, armband computers, shoe computers, clothing computers, and other wearable computers You can list computers that are used. For example, in an embodiment, the mobile computing device may be implemented as a smartphone capable of performing computer applications and voice and / or data communications. Some embodiments may be described using a mobile computing device implemented as a smartphone as an example, but other embodiments may be implemented using other wireless mobile computing devices as well. I can understand. Embodiments are not limited to this situation.

  As shown in FIG. 6, the device 800 can include a housing 802, a display 804, an input / output (I / O) device 806, and an antenna 808. Device 800 may also include navigation features 812. Display 804 may include any suitable display unit that displays information appropriate to the mobile computing device. I / O device 806 may include any suitable I / O device that inputs information to a mobile computing device. Examples of the I / O device 806 include an alphanumeric keyboard, a numeric keypad, a touch pad, an input key, a button, a switch, a rocker switch, a microphone, a speaker, a voice recognition device, and software. Information can also be entered into the device 800 via a microphone. Such information can be digitized by a voice recognition device. Embodiments are not limited to this situation.

  Various embodiments may be implemented using hardware elements, software elements, or a combination of both. Examples of hardware elements include processors, microprocessors, circuits, circuit elements (eg, transistors, resistors, capacitors, inductors, etc.), integrated circuits, application specific integrated circuits (ASIC), programmable logic devices (PLD), digital A signal processor (DSP), a field programmable gate array (FPGA), a logic gate, a register, a semiconductor device, a chip, a microchip, a chip set, and the like can be given. Examples of software include software components, programs, applications, computer programs, application programs, system programs, machine programs, operating system software, middleware, firmware, software modules, routines, subroutines, functions, methods, procedures, software interfaces, An application program interface (API), instruction set, calculation code, computer code, code segment, computer code segment, word, value, symbol, or any combination thereof may be mentioned. The determination of whether an embodiment is implemented using hardware elements, software elements, or both, is based on the desired calculation rate, power level, heat resistance , According to any number of factors, such as processing cycle allocation, input data rate, output data rate, memory resources, data bus speed, and other design or performance constraints.

  One or more aspects of at least one embodiment may be implemented by representative instructions stored on a machine-readable medium, the instructions representing various logic within the processor, and when read by a machine, Have the machine assemble logic to perform the techniques described herein. Such representatives, known as “IP cores”, can be stored on a tangible machine-readable medium, supplied to various customers or manufacturing facilities, and loaded into the manufacturing machine or processor that actually creates the logic.

  Embodiments of the present invention are applicable for use with all types of semiconductor integrated circuit (“IC”) chips. Examples of these IC chips include, but are not limited to, processors, controllers, chipset components, programmable logic arrays (PLA), memory chips, network chips, and the like. In addition, in some of the drawings, signal conductors are represented using lines. Some can be different to indicate more configuration signal paths, can have number labels to indicate some configuration signal paths, and / or 1 to indicate the main information flow direction. It can have arrows at one or more ends. However, this should not be interpreted in a limited way. Rather, such additional details can be used in combination with one or more exemplary embodiments to facilitate easier understanding of the circuit. Any signal line represented can actually be moved in multiple directions, whether or not it has additional information, and any suitable type of signaling, eg, differential pair, fiber optic line, And / or can include one or more signals that can be implemented using a digital or analog line implemented using a single-ended line.

  Although examples of size / model / value / range may be given, embodiments of the invention are not limited to those size / model / value / range. As manufacturing techniques (eg, photolithography) mature over time, it is expected that smaller sized devices can be manufactured. In addition, well-known power / ground connections to IC chips and other components are intended to simplify the illustration and discussion so as not to obscure certain aspects of embodiments of the present invention. It can be shown in the figure or not shown. Further, configurations may be shown in block diagram form, avoiding obscuring embodiments of the present invention, but details regarding the implementation of such block diagram configurations are the platforms on which the embodiments are to be implemented. In other words, that such details should be well within the scope of those skilled in the art. Where specific details (eg, circuitry) are described to describe example embodiments of the invention, embodiments of the invention may be used without these specific details or with variations on these specific details. It should be apparent to those skilled in the art that The description is thus to be regarded as illustrative instead of limiting.

  Some embodiments can be implemented using, for example, a machine capable of storing instructions or a set of instructions, or a tangible computer readable medium or tangible computer readable article, where the instructions or instruction set is executed by the machine. The machine can then perform the method and / or operation according to the embodiments. Such machines can include, for example, any suitable processing platform, computing platform, computing device, processing device, computing system, processing system, computer, processor, etc., and any hardware and / or software It can be carried out using suitable combinations. A machine-readable medium or machine-readable article is, for example, any suitable type of memory unit, memory device, memory article, memory medium, storage device, storage article, storage medium, and / or storage unit, eg, memory, removable medium, or Non-removable media, erasable media or non-erasable media, writable media or non-writable media, digital media or analog media, hard disk, floppy disk, compact disk read only memory (CD-ROM) ), Write-once compact disc (CD-R), rewritable compact disc (CD-RW), optical disc, magnetic medium, magneto-optical medium, removable memory card, removable memory disc, various types of digital versatile discs (DVD) ,tape, It can include a set or the like. Instructions may be implemented using any suitable high-level programming language, low-level programming language, object-oriented programming language, visual programming language, compiled programming language, and / or interpreted programming language, source code, compiled It can include any suitable type of code, such as code, interpreted code, executable code, static code, dynamic code, encrypted code, and the like.

  Unless otherwise indicated, terms such as “processing”, “calculation”, “calculation”, “specific” are expressed as physical quantities (eg, electronic) in the registers and / or memory of the computing system. And / or other data similarly represented as a physical quantity in a computing system memory, register, or other such information storage device, transmission device, or display device. Can be understood to refer to the operation and / or process of a computer or computing system or similar electronic computing device that converts to Embodiments are not limited to this situation.

  As used herein, the term “coupled” can refer to any type of relationship, direct or indirect, between the components in question, electrical connection, mechanical connection, fluid connection It can be applied to optical connections, electromagnetic connections, electromechanical connections, or other connections. In addition, in this specification, terms such as “first”, “second” and the like may be used only to facilitate discussion and are not specified at a particular time unless otherwise indicated. It has no meaning over time or over time.

Those skilled in the art can now appreciate from the foregoing description that the broad techniques of the embodiments of the present invention can be implemented in a variety of forms. Thus, while embodiments of the present invention have been described with reference to specific examples of the present invention, other modifications will become apparent to those skilled in the art after reading the drawings, specification, and claims below. As such, the true scope of embodiments of the present invention should not be so limited.
Examples of this embodiment are shown as the following items.
[Item 1]
A transmitting device,
An uncompressed video interconnect;
An image encoder;
The image encoder comprises:
Generate a compressed bitstream based on the input pixel signal,
A transmitting device for transmitting the compressed bitstream to the uncompressed video interconnect.
[Item 2]
The input pixel signal has a resolution that is higher than a supported resolution of the uncompressed video interconnect, and the image encoder presents the compressed bitstream to the uncompressed video interconnect as having the supported resolution. Item 2. The transmission device according to Item 1.
[Item 3]
The transmission device of claim 2, wherein the input pixel signal has a number of bits per pixel equal to the number of bits supported per pixel of the uncompressed video interconnect.
[Item 4]
The input pixel signal has a number of bits per pixel that is greater than the number of bits supported per pixel of the uncompressed video interconnect, and the image encoder determines the number of bits supported per pixel. The transmitting device of item 1, wherein the transmitting device presents the compressed bitstream to the uncompressed video interconnect.
[Item 5]
Item 5. The transmitting device of item 4, wherein the input pixel signal has a resolution equal to a supported resolution of the uncompressed video interconnect.
[Item 6]
The image encoder is
Compressing a pixel difference signal associated with the input pixel signal based on a value of the pixel difference signal;
6. The transmission device according to any one of items 1 to 5, wherein one or more flag bits are set in the compressed bitstream based on the compression.
[Item 7]
7. The transmission device of item 6, wherein the image encoder discards one or more most significant bits of the pixel difference signal in response to determining that the value of the pixel difference signal is less than a threshold.
[Item 8]
The transmitting device according to item 6, wherein the image encoder discards one or more least significant bits of the pixel difference signal in response to determining that the value of the pixel difference signal is greater than a threshold value.
[Item 9]
Item 9. The item 1-8, wherein the uncompressed video interconnect is at least one of an HDMI® interconnect, an LVDS interconnect, a V-by-One interconnect, and an iDP interconnect. The transmitting device according to 1.
[Item 10]
A program comprising a set of instructions, said set of instructions being executed by a processor,
Generating a compressed bitstream based on an input pixel signal;
Sending the compressed bitstream to an uncompressed video interconnect;
A program that executes
[Item 11]
The input pixel signal has a resolution that is higher than a supported resolution of the uncompressed video interconnect, and when the instructions are executed, the instruction is sent to the computer as having the supported resolution, and the compressed bitstream is Item 11. The program of item 10, which is presented to the compressed video interconnect.
[Item 12]
Item 12. The program of item 11, wherein the input pixel signal has a number of bits per pixel equal to the number of bits supported per pixel of the uncompressed video interconnect.
[Item 13]
The input pixel signal has a number of bits per pixel that is greater than the number of bits supported per pixel of the uncompressed video interconnect, and when the instructions are executed, the instruction is sent to the computer per pixel. Item 11. The program of item 10, which causes the compressed bitstream to be presented to the uncompressed video interconnect as having a supported number of bits.
[Item 14]
14. A program according to item 13, wherein the input pixel signal has a resolution equal to a supported resolution of the uncompressed video interconnect.
[Item 15]
When the instructions are executed, they are
Compressing a pixel difference signal associated with the input pixel signal based on a value of the pixel difference signal;
Setting one or more flag bits in the compressed bitstream based on the compression;
The program according to any one of items 10 to 14, wherein the program is executed.
[Item 16]
When the instructions are executed, they are
16. The program according to item 15, wherein in response to determining that the value of the pixel difference signal is greater than a threshold value, discarding one or more most significant bits of the pixel difference signal is performed.
[Item 17]
When the instructions are executed, they are
16. The program according to item 15, wherein in response to determining that the value of the pixel difference signal is less than a threshold, discarding one or more least significant bits of the pixel difference signal is performed.
[Item 18]
Item 18. The item 10-17, wherein the compressed bitstream is transmitted to at least one of an HDMI® interconnect, an LVDS interconnect, a V-by-One interconnect, and an iDP interconnect. The program described in.
[Item 19]
A receiving device,
An uncompressed video interconnect;
An image decoder;
The image decoder comprises:
Receiving a compressed bitstream from the uncompressed video interconnect;
A receiving device that generates an output pixel signal based on the compressed bitstream.
[Item 20]
The image decoder
Establishing a resolution of the output pixel signal that is higher than a supported resolution of the uncompressed video interconnect;
20. The receiver of item 19, establishing a number of bits per pixel of the output pixel signal equal to a supported number of bits per pixel of the uncompressed video interconnect.
[Item 21]
The image decoder
Establishing a number of bits per pixel of the output pixel signal that is greater than a supported number of bits per pixel of the uncompressed video interconnect;
20. The receiving device of item 19, establishing a resolution of the output pixel signal equal to a supported resolution of the uncompressed video interconnect.
[Item 22]
The image decoder
Read one or more flag bits in the compressed bitstream;
Item 22. The receiving device according to any one of Items 19-21, wherein the compressed bitstream is decompressed based on the one or more flag bits.
[Item 23]
Item 23. The item 19-22, wherein the uncompressed video interconnect is at least one of an HDMI® interconnect, an LVDS interconnect, a V-by-One interconnect, and an iDP interconnect. The receiving device described in 1.
[Item 24]
A program comprising a set of instructions, said set of instructions being executed by a processor,
Receiving a compressed bitstream from an uncompressed video interconnect;
Generating an output pixel signal based on the compressed bitstream;
A program that executes
[Item 25]
When the instructions are executed, they are
Establishing a resolution of the output pixel signal that is higher than a supported resolution of the uncompressed video interconnect;
Establishing a number of bits per pixel of the output pixel signal equal to a supported number of bits per pixel of the uncompressed video interconnect;
Item 25. The program according to Item 24.
[Item 26]
When the instructions are executed, they are
Establishing a number of bits per pixel of the output pixel signal that is greater than a supported number of bits per pixel of the uncompressed video interconnect;
Establishing a resolution of the output pixel signal equal to a supported resolution of the uncompressed video interconnect;
Item 25. The program according to Item 24.
[Item 27]
When the instructions are executed, they are
Reading one or more flag bits in the compressed bitstream;
Decompressing the compressed bitstream based on the one or more flag bits;
27. The program according to any one of items 24 to 26, wherein the program is executed.
[Item 28]
28. Any of items 24-27, wherein the compressed bitstream is received from at least one of an HDMI® interconnect, an LVDS interconnect, a V-by-One interconnect, and an iDP interconnect. The program described in.

Claims (24)

A transmitting device,
An uncompressed video interconnect;
An image encoder;
The image encoder comprises:
Compressing the pixel difference signal associated with the input pixel signal, discarding one or more least significant bits of the pixel difference signal in response to determining that the value of the pixel difference signal is greater than a threshold value To generate a compressed bitstream,
A transmitting device for transmitting the compressed bitstream to the uncompressed video interconnect.   The input pixel signal has a resolution that is higher than a supported resolution of the uncompressed video interconnect, and the image encoder presents the compressed bitstream to the uncompressed video interconnect as having the supported resolution. The transmission apparatus according to claim 1.   The transmitter of claim 2, wherein the input pixel signal has a number of bits per pixel equal to the number of bits supported per pixel of the uncompressed video interconnect.   The input pixel signal has a number of bits per pixel that is greater than the number of bits supported per pixel of the uncompressed video interconnect, and the image encoder determines the number of bits supported per pixel. The transmitting device of claim 1, comprising: presenting the compressed bitstream to the uncompressed video interconnect.   The transmission device of claim 4, wherein the input pixel signal has a resolution equal to a supported resolution of the uncompressed video interconnect. The image encoder is
The transmission apparatus according to claim 1, wherein one or a plurality of flag bits are set in the compressed bitstream based on whether or not the compression is performed. The uncompressed video interconnect, HDMI (TM) interconnection, LVDS interconnects, V-by-One interconnects, and at least one of iDP interconnect any one of claims 1 to 6 of 1 The transmitter according to the item. A program comprising a set of instructions, said set of instructions being executed by a processor,
Compressing the pixel difference signal associated with the input pixel signal, discarding one or more least significant bits of the pixel difference signal in response to determining that the value of the pixel difference signal is greater than a threshold value To generate a compressed bitstream,
Sending the compressed bitstream to an uncompressed video interconnect;
A program that executes The input pixel signal has a resolution that is higher than a supported resolution of the uncompressed video interconnect, and when the instructions are executed, the instruction is sent to the computer as having the supported resolution, and the compressed bitstream is 9. A program according to claim 8 , wherein the program is presented on a compressed video interconnect. The program of claim 9 , wherein the input pixel signal has a number of bits per pixel equal to the number of bits supported per pixel of the uncompressed video interconnect. The input pixel signal has a number of bits per pixel that is greater than the number of bits supported per pixel of the uncompressed video interconnect, and when the instructions are executed, the instruction is sent to the computer per pixel. 9. The program of claim 8 , which causes the compressed bitstream to be presented to the uncompressed video interconnect as having a supported number of bits. The program of claim 11 , wherein the input pixel signal has a resolution equal to a supported resolution of the uncompressed video interconnect. When the instructions are executed, they are
The program according to any one of claims 8 to 12 , wherein execution of setting one or more flag bits in the compressed bitstream is performed based on whether or not the compression has been performed. 14. The compressed bitstream of any one of claims 8 to 13 , wherein the compressed bitstream is transmitted to at least one of an HDMI® interconnect, an LVDS interconnect, a V-by-One interconnect, and an iDP interconnect. The program described in the section. A reception device that receives the compressed bitstream transmitted by the transmission device according to any one of claims 1 to 7 ,
An uncompressed video interconnect;
An image decoder;
The image decoder comprises:
Receiving the compressed bitstream from the uncompressed video interconnect;
A receiving device that generates an output pixel signal based on the compressed bitstream. The image decoder
Establishing a resolution of the output pixel signal that is higher than a supported resolution of the uncompressed video interconnect;
16. The receiver of claim 15 , establishing a number of bits per pixel of the output pixel signal equal to a supported number of bits per pixel of the uncompressed video interconnect. The image decoder
Establishing a number of bits per pixel of the output pixel signal that is greater than a supported number of bits per pixel of the uncompressed video interconnect;
16. The receiving device of claim 15 , wherein the receiving device establishes a resolution of the output pixel signal equal to a supported resolution of the uncompressed video interconnect. The image decoder
Read one or more flag bits in the compressed bitstream;
The receiving device according to any one of claims 15 to 17 , wherein the compressed bitstream is decompressed when the one or more flag bits are set. 19. The any one of claims 15 to 18 , wherein the uncompressed video interconnect is at least one of an HDMI (R) interconnect, an LVDS interconnect, a V-by-One interconnect, and an iDP interconnect. The receiving device according to item. A program comprising a set of instructions, said set of instructions being executed by a processor,
Receiving the compressed bitstream transmitted by the transmitter according to any one of claims 1 to 7 from an uncompressed video interconnect;
Generating an output pixel signal based on the compressed bitstream;
A program that executes When the instructions are executed, they are
Establishing a resolution of the output pixel signal that is higher than a supported resolution of the uncompressed video interconnect;
Establishing a number of bits per pixel of the output pixel signal equal to a supported number of bits per pixel of the uncompressed video interconnect;
The program according to claim 20 , wherein the program is executed. When the instructions are executed, they are
Establishing a number of bits per pixel of the output pixel signal that is greater than a supported number of bits per pixel of the uncompressed video interconnect;
Establishing a resolution of the output pixel signal equal to a supported resolution of the uncompressed video interconnect;
The program according to claim 20 , wherein the program is executed. When the instructions are executed, they are
Reading one or more flag bits in the compressed bitstream;
Decompressing the compressed bitstream if the one or more flag bits are set;
The program according to any one of claims 20 to 22 , wherein the program is executed. 24. Any one of claims 20 to 23 , wherein the compressed bitstream is received from at least one of an HDMI (R) interconnect, an LVDS interconnect, a V-by-One interconnect, and an iDP interconnect. The program described in the section.

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