Patent Application
20120236949
Embodiments of the invention generally relate to the field of multimedia processing and, more particularly, conversion of multimedia data streams for use by connected devices.
Multimedia data, including video, audio, and other data, may be transmitted in varying formats. In addition to many legacy formats, newer formats may include HDMI™ (High-Definition Multimedia Interface) formats supported by the High-Definition Multimedia Interface Specification Version 1.4a (Mar. 4, 2010), including three-dimensional (3D) multimedia video, allowing for presentation of 3D video on a television or other display, and data transmitted using a supported 300 MHz video mode, and formats supported by High-Definition Multimedia Interface Specification Version 1.3 (Jun. 22, 2006), including Deep Color (referring to color represented by 30 or more bits per pixel).
However, a presentation device, such as a television unit, that utilizes such multimedia data formats may be connected to one or more connected downstream devices or systems (which are referred to here generally as connected devices) that receive multimedia data via the presentation device. Such connected devices may include installed or legacy devices, including existing HDMI connected devices, that are incapable of accepting a new multimedia signal format received by the presentation device because such devices were not designed to be compatible to the new signal format.
Because of this multimedia signal format incompatibility, devices that could utilize a portion of a signal, such as a device that would utilize the audio portion of a multimedia signal, commonly will reject the entire multimedia signal. For example, a legacy HDMI compatible device that is utilized for presentation of the audio portion of a multimedia signal will reject a 3D HDMI signal because the legacy HDMI device will not recognize the 3D signal format.
Embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings in which like reference numerals refer to similar elements.
Embodiments of the invention are generally directed to conversion of multimedia data streams for use by connected devices.
In a first aspect of the invention, a method for processing data includes receiving a data stream in a first multimedia data format at a first device, and inserting a replacement data portion into the received data stream to generate a modified multimedia data stream in a second multimedia data format. The modified data stream is provided to a second device coupled to the first device.
In a second aspect of the invention, an apparatus includes one or more ports for the reception of multimedia data, including reception of a first data stream in a first multimedia data format. The apparatus further includes a first transmitter for transmitting the first data stream for presentation, and a second transmitter for transmitting a second data stream to a connected device, where the second data stream is either the received first data stream or a modified version of the received first data stream in a second multimedia data format, the apparatus generating the modified data stream, the generation of the modified data stream including inserting a replacement data portion in the received data stream.
Embodiments of the invention are generally directed to conversion of multimedia data streams for use by connected devices.
In some embodiments, a method, apparatus, or system provides for receiving a data stream, and modifying the data stream to be compatible with connected devices that are incompatible with the format of the received data stream. In some embodiments, an apparatus, system, or method operates to receive an input data stream in a first multimedia data format, and insert a replacement data portion to generate a second data stream in a second multimedia data format for utilization by a connected device. In some embodiments, the replacement data portion may be a video, audio, control, metadata, or other data portion.
In some embodiments, an apparatus or system that receives a data stream in a first multimedia data format detects the capability of a connected device, the apparatus or system providing the received data stream to the connected device if the connected device is capable of accepting the first multimedia data format, and providing a modified data stream in a second multimedia data format if the connected device is incapable of accepting the first multimedia data format.
In some embodiments, an apparatus or system receiving a data stream in a first multimedia data format inserts a replacement data portion into the received data stream to generate a modified data stream in a second multimedia data format.
In some embodiments, an apparatus or system generates replacement data to substitute for a data portion of the received data stream in the generation of the modified data stream. In some embodiments, the generated data is dummy data generated for the purpose of allowing acceptance of the second data stream by a device that is incapable of accepting data in the first multimedia data format. In an example, the generated data is a generated video portion without any meaning or connection with the received data stream.
In an example, an HDMI processing element, which may be port processors or other types of devices or systems, has one or more HDMI receive ports and one or more HDMI transmit ports. In an operation, selected receive and transmit ports are used to handle a particular chosen HDMI data stream. In some embodiments, a device accepts data in a certain first multimedia data format and converts such data into a form that is accepted by a connected sink device that is not compatible with the first multimedia data format. For example, an HDMI port processor is operable to accept one or more newer HDMI data formats, and convert the received data into a data format that can be accepted by a connected legacy HDMI sink device. In an additional example, DisplayPort is another interface standard to which an embodiment of a method may apply.
A device, such as a television, receiving a data stream may be connected with another device (which may be referred to as a connected device) that may utilize the data stream. The connected device may be a device such as a sound bar to reproduce the audio portion of the signal, another television unit, an AV (audio video) receiver, or other device utilizing multimedia data. In some embodiments, an apparatus or system, such as a 3D television having a port processor or other processing element under firmware control, receiving a 3D multimedia data stream may access data regarding the capability of a connected sink device to determine what multimedia data format is to be sent to the connected device. In an example, firmware of the apparatus or system may access the EDID (Extended Display Identification Data, which may also include E-EDID, Enhanced Extended Display Identification Data) in a connected device. In some embodiments, the apparatus or system reads the EDID to determine 3D capability of the connected device, and utilizes such knowledge to determine the nature of data that is sent to the connected device.
In some embodiments, if an apparatus or system receives a 3D multimedia data stream and determines that a connected device is 3D capable, then the apparatus or system may send the unmodified 3D HDMI stream to the 3D capable connected device, while displaying the 3D image on its own internal panel. In some embodiments, if the apparatus or system determines that the connected device is not 3D capable, the apparatus or system sends a modified data stream, such as the 3D data stream converted to a 2D (two-dimensional) HDMI stream, to the non-3D capable connected device, while displaying the 3D image on its own internal panel.
In some embodiments, an apparatus or system is connected to a connected device that is utilized to reproduce the audio signal of a data stream, and thus the connected device does not need to utilize the video portion of the data stream. In some embodiments, when the original format of a data stream cannot be accepted by the connected device, the apparatus or system converts the data stream such that only the video portion of the data stream is be altered, while still transporting the unaltered audio and other embedded information to allow usage by the connected device.
In an example, digital audio and digital video (such as HDMI data) may be encoded onto a TMDS (Transition Minimized Differential Signaling) link, with the cable connection being a single HDMI cable. The HDMI cable further includes a Display Data Channel (DDC), the DDC being a communication channel based on the I2C (Inter-Integrated Circuit) computer bus specification. HDMI includes support for the Enhanced Display Data Channel (E-DDC), which is used by the HDMI source apparatus or system to read the EDID data from the connected HDMI sink device to determine what audio/video formats the connected device supports. In some embodiments, the EDID of television may be altered to match the audio capability of the connected device, while indicating the video capability of the television.
In some embodiments, a system or apparatus may utilize high speed video rate (14 to >300 MHz) digital logic to separate a digitally encoded media stream into digital audio and video data in order to replace the video data with a generated video carrier that is compatible to the media standard for devices that are of limited video standard compatibility (such as, for example, legacy HDMI devices that are not capable of 3D operation, Deep Color utilization, or operation that is faster than 150 MHz).
In some embodiments, an apparatus or system includes a data generator to generate a replacement data stream for insertion in a modified data stream for connected devices that are not capable of receiving the original format of the data stream. The data generator may vary in different embodiments, depending on the needs of operation. In an example of replaced video data, a video data generator may be as simple as a static test pattern if, for example, the video data portion is not important because the audio portion of a multimedia signal onward is the only portion utilized by a connected device. In some embodiments, a data generator may be more complicated if the replaced data portion of a multimedia data stream is to be utilized. For example, a video data processor may include a processor for 3D to 2D full motion image conversion, or a video processor for 4k×2k resolution conversion to 1080P or Deep Color to standard color conversion. In some embodiments, one or more other portions of a received multimedia data stream, such as the audio and other embedded HDMI data of an HDMI data stream, are preserved and transported to the connected HDMI device with the generated video.
In some embodiments, a device may be implemented in a port device or system utilizing two transmitters for the transfer of data. For example, a first transmitter may operate as an HDMI interface to provide HDMI 1.4a or other future video formats for display and a second transmitter may operate as an HDMI interface to carry audio to a legacy device, such as a legacy sound bar or AV receiver, or a television or other multimedia device receiving an HDMI signal.
In some embodiments, a port device or system further allows the insertion of external audio sources onto a received HDMI stream. In some embodiments, a device or system receiving a multimedia data stream, such as an HDMI data stream, allows acceptance of audio from another audio source and inserts this audio in place of the audio of the selected HDMI source stream or onto an internally generated HDMI source. In some embodiments, a device or system may utilize a second transmitter as an HDMI interface to carry audio to a sound bar when, for example, the television is not using an HDMI source (such as when the television is presenting data received from a terrestrial tuner or external media input). In some embodiments, the device or system allows a connected device, such as a sound bar or AV receiver, to receive audio via the HDMI transmitter, while the HDMI sources available to the device or system are not the media that the television is currently presenting. In some embodiments, device or system further allows the selected audio source to be used internally in the television or other presentation device.
In some embodiments, the presentation device 100 may include a multimedia data processor apparatus or system 110, wherein the processor is operable to receive the multimedia data stream 150; provide the data stream in its original format (in the first data format) to an element for presentation or other use, illustrated as a data device 120 (such as a display for the presentation of a video portion of the multimedia data stream); and provide an modified data stream with a replaced data portion 125 (in the second data format) to the connected device 130. For example, the processing apparatus or system 110 may present 3D video content from the data stream 115 on the display. In this example, the connected device 130 may be a device for the presentation of the audio portion of the received multimedia data stream 150, but the connected device 130 may be incapable of handling multimedia data in the 3D data format and thus cannot obtain the audio data from the data stream 115 provided to the data device 120. While this particular example includes the replacement of video data for use of data by a connected audio device, embodiments may include the replacement of any data portion of a received data stream for the use of a connected device.
In some embodiments, the multimedia data processor 110 receives the multimedia data stream in the 3D data format and, in addition to providing the data stream 115 to the data device 120, generates or obtains a replacement data element, inserts the replacement video data stream in place of the original 3D video data, and provides the generated data stream with replaced video portion 125 to the connected device 130. In this example, the connected device 130 is able to process the generated data stream 125 and may, for example, obtain the audio data portion from the generated data stream 125 for presentation.
In some embodiments, the source device 210 provides an HDMI data stream, such as a 3D data stream 220 under HDMI Version 1.4a, to the television 230 via the HDMI cable 215. The television 230 may utilize the 3D data, including the presentation of the 3D video data on a display screen,
However, the television 230 is connected with a non-3D sink device 250 that is incapable of utilizing the 3D data. In some embodiments, the television 230 operates to detect the data format capability of the connected device 250. In some embodiments, in addition to the source device 210 determining that the television 230 is 3D compatible television through use of the EDID received from the television, the television 230 may determine that determine that the connected device is not 3D compatible through use of the EDID received from the connected device 250. In some embodiments, in response to the detection of the lack of 3D capability of the connected device 250, the television modifies the received 3D HDMI data stream to remove the video stream and replace the removed data stream with a 2D video stream, such as a dummy 2D video stream, and transmits the modified HDMI data stream 240 to the connected device 250. The 2D compatible connected device 250 then is capable of accepting and utilizing the received 2D HDMI data stream 240, and may, for example, utilize the audio portion of the 2D data stream 240 to provide the audio portion to accompany the 3D video presented by the television 230.
In some embodiments, the television 310 includes a port element 315 (which may be a device, chip, or system, including, for example, a port processor) that operates to receive and handle multimedia data, including the receipt and handling of HDMI data from the HDMI devices 305, shown in
In some embodiments, the port element 315 includes transmitters 332, the transmitters in this illustration including at least two HDMI transmitters, illustrated as HDMI Tx1 335 and HDMI Tx2 340, where HDMI Tx1 335 presents an HDMI multimedia data stream chosen by the multiplexer 330 to the other television components 350 (including commonly known components for the handling of video data) for presentation on, for example, a display panel 355. In some embodiments, HDMI Tx2 340 operates to present an HDMI data stream to the sound bar or A/V receiver 360.
In operation, an HDMI source device 305 may provide a data stream in a first data format (such as a 3D HDMI data stream). In this illustration, the television 310 is compatible with the first multimedia data format, but the sound bar or A/V receiver 360 is not compatible with the first multimedia data format. However, the sound bar or A/V receiver 360 is compatible with a second multimedia data format, where the second data format may be a legacy multimedia format (such as a 2D HDMI data stream). In some embodiments, the port element 315 operates to detect the data capability of connected devices. In some embodiments, the port element 315 operates to convert a multimedia data stream in the first multimedia data format into a data stream in the second multimedia data format. In some embodiments, the port element 315 operates to replace a video data portion of a received multimedia data stream with replacement video data, such as a video data stream generated by the internally generated HDMI source 325. In some embodiments, the generated video data is dummy data without actual meaning or relation to the content of the received data stream, while in other embodiments the generated video data may be data converted to a 2D format. With the receipt of the data in second multimedia data format, the sound bar or A/V receiver 360 is able to utilize the received data, including the use of such data for the presentation of audio data to accompany the presentation of the video data by the television 310 on the display panel as well as the use of the video in the case of converted (non-dummy) video 355.
In some embodiments, the television components 350 may provide received digital audio data from the other audio or video sources 465 to port element 315, such as via a S/PDIF (Sony/Philips Digital Interconnect Format) or I2S (Inter-IC Sound or Integrated Interchip Sound) (also referred to as I2S) interface 470 of the other components to the S/PDIF or I2S interface 475 of the port element 315. In some embodiments, the television components 350 may also provide other received video data signals from the other audio or video sources 465 to the port element 315. As illustrated in
In some embodiments, the received audio data from the other audio or video sources 465 may be mixed with generated video data from the internally generated HDMI source 325 at the HDMI Tx2 transmitter 340 to generate an HDMI data stream in a format usable by the sound bar or A/V receiver 360, thereby allowing audio data from other sources to be presented via the HDMI connected sound bar or A/V receiver 360. In some embodiments, audio data may also be inserted over the original HDMI stream of device(s) 305. In some embodiments, the other television components 350 may also provide video data to port element 315 and that video could be used to replace the video from HDMI stream of device(s) 305
In some embodiments, the retained data 520 is received by a media transmitter 535, where the media transmitter 535 also receives replacement data 530 (which may be in a second multimedia data format, such as, for example, 2D format) from a data generator 525. In some embodiments, the media transmitter utilizes the generated data 530 and the retained data from the original multimedia data 505 to generate modified media data (which may include video, audio, and other data) 540, where such data is in the second multimedia data format.
In some embodiments, the media transmitter may also receive other multimedia data 545 (such as, for example, additional audio data). In some embodiments, the multimedia transmitter may further utilize the other multimedia data 545, which may be, for example, non-HDMI data, in the generation of the media data 540, thereby allowing the use of the data stream by a connected device connected by an HDMI interface. While this example refers to HDMI for illustration, embodiments are not limited any particular data interface, and may utilize any wired or wireless interface for the transmission of the data, including DisplayPort and other similar multimedia interfaces.
In some embodiments, there is determination whether the second device is compatible with the first multimedia data format 606. If the second device is compatible with the first multimedia data format, then the multimedia data stream is provided in the first multimedia data format to a presentation element of the first device and to the second device 608. If the second device is not compatible with the first multimedia data format, then replacement data is obtained or generated for the multimedia data stream 610, and the replacement data is inserted into a copy of the multimedia data stream to generate a converted data stream in a second multimedia data format 612 (such as, for example, 2D HDMI data format). In some embodiments, the multimedia data stream in the first multimedia data format is provided to, for example, a presentation element of the first device and the converted multimedia data stream in the second multimedia data format is provided to the second device 614.
In some embodiments, the multimedia data stream that was originally received may be presented using the first device and the second device 616, such as presenting a first portion of the multimedia stream (such as the original video data) on the first device and presenting a second portion of the multimedia stream (such as the original audio data) on the second device. However, embodiments are not limited to any particular usage of the multimedia data streams by the devices.
In the description above, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. In other instances, well-known structures and devices are shown in block diagram form. There may be intermediate structure between illustrated components. The components described or illustrated herein may have additional inputs or outputs that are not illustrated or described. The illustrated elements or components may also be arranged in different arrangements or orders, including the reordering of any fields or the modification of field sizes.
The present invention may include various processes. The processes of the present invention may be performed by hardware components or may be embodied in computer-readable instructions, which may be used to cause a general purpose or special purpose processor or logic circuits programmed with the instructions to perform the processes. Alternatively, the processes may be performed by a combination of hardware and software.
Portions of the present invention may be provided as a computer program product, which may include a computer-readable storage medium having stored thereon computer program instructions, which may be used to program a computer (or other electronic devices) to perform a process according to the present invention. The computer-readable storage medium may include, but is not limited to, floppy diskettes, optical disks, CD-ROMs (compact disk read-only memory), and magneto-optical disks, ROMs (read-only memory), RAMs (random access memory), EPROMs (erasable programmable read-only memory), EEPROMs (electrically erasable programmable read-only memory), magnet or optical cards, flash memory, or other type of media/computer-readable medium suitable for storing electronic instructions. Moreover, the present invention may also be downloaded as a computer program product, wherein the program may be transferred from a remote computer to a requesting computer.
Many of the methods are described in their most basic form, but processes may be added to or deleted from any of the methods and information may be added or subtracted from any of the described messages without departing from the basic scope of the present invention. It will be apparent to those skilled in the art that many further modifications and adaptations may be made. The particular embodiments are not provided to limit the invention but to illustrate it.
If it is said that an element “A” is coupled to or with element “B,” element A may be directly coupled to element B or be indirectly coupled through, for example, element C. When the specification states that a component, feature, structure, process, or characteristic A “causes” a component, feature, structure, process, or characteristic B, it means that “A” is at least a partial cause of “B” but that there may also be at least one other component, feature, structure, process, or characteristic that assists in causing “B.” If the specification indicates that a component, feature, structure, process, or characteristic “may”, “might”, or “could” be included, that particular component, feature, structure, process, or characteristic is not required to be included. If the specification refers to “a” or “an” element, this does not mean there is only one of the described elements.
An embodiment is an implementation or example of the invention. Reference in the specification to “an embodiment,” “one embodiment,” “some embodiments,” or “other embodiments” means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least some embodiments, but not necessarily all embodiments. The various appearances of “an embodiment,” “one embodiment,” or “some embodiments” are not necessarily all referring to the same embodiments. It should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
This application is related to and claims priority to U.S. Provisional Patent Application No. 61/453,073, filed Mar. 15, 2011, the entire contents of which are hereby incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| 61453073 | Mar 2011 | US |
