US20170269673A1 - Power-gating media decoders to reduce power consumption - Google Patents
Power-gating media decoders to reduce power consumption Download PDFInfo
- Publication number
- US20170269673A1 US20170269673A1 US15/495,229 US201715495229A US2017269673A1 US 20170269673 A1 US20170269673 A1 US 20170269673A1 US 201715495229 A US201715495229 A US 201715495229A US 2017269673 A1 US2017269673 A1 US 2017269673A1
- Authority
- US
- United States
- Prior art keywords
- memory
- audio data
- amount
- selectively
- control logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3275—Power saving in memory, e.g. RAM, cache
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3215—Monitoring of peripheral devices
- G06F1/3225—Monitoring of peripheral devices of memory devices
-
- Y02B60/1228—
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
Embodiments of a system that reduces power consumption by power-gating media decoders are described. During operation of the system, a decoder circuit receives encoded audio data and outputs corresponding decoded audio data to a memory, which is electrically coupled to the decoder circuit. Moreover, control logic, which is electrically coupled to the memory and the decoder circuit, provides commands to the memory and the decoder circuit that selectively disable at least a portion of the memory based on an amount of decoded audio data in the memory.
Description
- Field of the Invention
- The present invention relates to techniques for managing power consumption. More specifically, the present invention relates to circuits and methods for selectively gating memory and media decoders.
- Related Art
- Advances in semiconductor process technology have made it possible for portable electronic devices, such as laptop computers and cellular telephones, to perform increasingly complicated functions. This has enabled such portable electronic devices to provide a wide variety of features and to support a large number of applications. However, the capabilities of energy-storage components in the portable electronic devices (such as batteries) have not increased at the same rate. Consequently, power consumption is becoming an increasingly significant constraint in the design of such portable electronic devices.
- Many existing portable electronic devices address this problem by using power-management techniques. For example, circuits may be switched from an active mode of operation to a low-power or standby mode of operation when applications are not in use. Note that power is conserved in the standby mode of operation by turning off or disabling components and sub-circuits.
- However, these existing power-management techniques are often implemented using a small number of inflexible rules. This is a problem because the power consumption of these portable electronic devices can vary dynamically based on user-defined conditions and interactions between applications executing on the portable electronic devices. Accommodating this time-varying power consumption is often challenging for existing power-management techniques.
- Hence what is needed is a method and an apparatus that facilitates managing power consumption without the above-described problems.
- Embodiments of a system that can conserve power associated with operating media playback hardware and/or executing playback applications (e.g., software) are described. In particular, during media playback in the system, encoded data stored in a memory or buffer is supplied to a decoder, and decoded data output from the decoder is stored in another memory or buffer until it is consumed (such as when it is output to a user). Control logic (and/or instructions) in the system may be used to selectively enable and/or disable a portion of either or both of the memories and/or the decoder in this pipeline based on the amount of data in either or both of the memories. For example, if there is more than a pre-determined amount of decoded data in the other memory (e.g., the decoded data exceeds a threshold), a portion of the other memory that is used during decoding of the encoded data may be disabled (such as by disconnecting a power signal and/or a clock signal to a portion of the memory). Moreover, the selective enabling and disabling may also be based on a variety of additional parameters associated with: either or both of the memories, the decoder, the media being decoded, the playback hardware, and/or the playback application.
- One embodiment of the present invention provides the system that reduces power consumption by power-gating media decoders. During operation of the system, a decoder circuit receives encoded audio data and outputs corresponding decoded audio data to a memory, which is electrically coupled to the decoder circuit. Moreover, control logic, which is electrically coupled to the memory and the decoder circuit, provides commands to the memory and the decoder circuit that selectively disable at least a portion of the memory based on an amount of decoded audio data in the memory.
- In some embodiments, the portion of the memory which is selectively disabled is used when the decoder circuit is decoding audio data.
- In some embodiments, the commands selectively disable at least a portion of the decoder circuit based on an amount of decoded audio data in the memory. Moreover, in some embodiments the selective disabling is based on transient power consumption associated with disabling the portion of the memory.
- In some embodiments, the control logic is configured to select a duty cycle and/or a period for the selective disabling.
- In some embodiments, the commands include turning off a power-supply signal and/or a clock signal used by the portion of the memory.
- In some embodiments, the control logic is configured to selectively disable the portion of the memory when the amount of decoded audio data exceeds a pre-determined value. Moreover, in some embodiments the control logic is configured to provide additional commands to the memory and the decoder circuit, which selectively enable the portion of the memory based on the amount of decoded audio data in the memory. For example, the control logic may selectively enable the portion of the memory when the amount of decoded audio data is less than another pre-determined value. Note that the pre-determined value for disabling may be different from the pre-determined value for enabling.
- In some embodiments, the selective disabling is based on: an amount of audio data remaining to be decoded; a rate of decoding of the audio data; a mode of playing the decoded audio data; and/or an amount of memory allocated for the decoded audio data.
- In some embodiments, the selective disabling is aborted if the mode of playing the decoded audio data is changed and/or if a new mode of playing increases consumption of the decoded audio data in the memory.
- In some embodiments, the selective disabling is aborted if the amount of memory allocated for the decoded audio data is changed.
- In some embodiments, the decoded audio data is associated with a file, and the selective disabling is aborted if an end of the file is detected.
- In some embodiments, the selective disabling is aborted based on a state of the decoder circuit.
- Another embodiment provides an integrated circuit, which may be included in the system. During operation of this integrated circuit, an input interface receives information from the memory and the decoder circuit, where the information indicates the amount of decoded audio data in the memory. Next, a circuit, which is electrically coupled to the input interface, provides commands that selectively disable at least the portion of the memory based on the amount of decoded audio data. Then, an output interface, which is electrically coupled to the circuit, outputs the commands to the memory and the decoder circuit.
- Another embodiment provides another integrated circuit, which may be included in the system. During operation of this integrated circuit, the input interface receives additional information from another memory and the decoder circuit. Note that the decoder circuit receives encoded audio data from the other memory, and the other memory receives the encoded audio data from an additional memory. Furthermore, the additional information indicates an amount of encoded audio data in the other memory. Next, the circuit provides additional commands that selectively disable at least a portion of the additional memory based on the amount of encoded audio data, where the decoder circuit is configured to receive the encoded audio data from the other memory even when the portion of the additional memory is disabled. Moreover, the output interface outputs the additional commands to the additional memory and the decoder circuit.
- Another embodiment provides a method for conserving power, which may be performed by the system. During operation, the system receives information from the memory and the decoder circuit, where the decoder circuit is configured to provide decoded audio data to the memory and the information indicates the amount of decoded audio data in the memory. Next, the system determines whether to selectively disable at least the portion of the memory based on the amount of decoded audio data in the memory, and then provides commands to the memory and the decoder circuit that selectively disable the portion of the memory.
- Another embodiment provides a computer system. This computer system may execute instructions corresponding to at least some of the above-described operations. Moreover, these instructions may include high-level code in a program module and/or low-level code that is executed by a processor in the computer system.
- Another embodiment relates to a computer program product for use in conjunction with the system and/or computer system. This computer program product may include instructions corresponding to at least some of the above-described operations.
- Another embodiment provides a portable device. This portable device may include one or more of the above-described integrated circuits and/or may execute instructions corresponding to at least some of the above-described operations. In some embodiments, the portable device includes a touch-sensitive display which is configured to determine movement of one or more points of contact by a user of the touch-sensitive display.
-
FIG. 1 is a block diagram illustrating a circuit in accordance with an embodiment of the present invention. -
FIG. 2A is a flowchart illustrating a process for conserving power in accordance with an embodiment of the present invention. -
FIG. 2B is a flowchart illustrating a process for conserving power in accordance with an embodiment of the present invention. -
FIG. 3 is a flowchart illustrating a process for conserving power in accordance with an embodiment of the present invention. -
FIG. 4A is a graph illustrating commands as a function of time in accordance with an embodiment of the present invention. -
FIG. 4B is a graph illustrating commands as a function of time in accordance with an embodiment of the present invention. -
FIG. 4C is a graph illustrating commands as a function of time in accordance with an embodiment of the present invention. -
FIG. 5 is a block diagram illustrating a portable device in accordance with an embodiment of the present invention. -
FIG. 6 is a block diagram illustrating a computer system in accordance with an embodiment of the present invention. -
FIG. 7 is a block diagram illustrating a data structure in accordance with an embodiment of the present invention. - Note that like reference numerals refer to corresponding parts throughout the drawings.
- The following description is presented to enable any person skilled in the art to make and use the invention, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
- Embodiments of hardware, software, and/or processes for using the hardware and/or software are described. Note that hardware may include a circuit, a device (such as a portable device), and/or a system (such as a computer system), and software may include a computer program product for use with the computer system. Moreover, in some embodiments the portable device and/or the system include one or more of the circuits (for example, in one or more integrated circuits).
- These circuits, devices, systems, computer program products, and/or processes may be used to conserve power associated with media playback hardware and/or playback applications (e.g., software). In particular, during media playback encoded data stored in a memory or buffer is supplied to a decoder, and decoded data output from the decoder is stored in another memory or buffer until it is consumed (such as when it is output to a user). Control logic (and/or instructions) may be used to selectively enable and/or disable a portion of either or both of the memories and/or the decoder in this pipeline based on the amount of data in either or both of the memories. For example, if there is more than a pre-determined amount of decoded data in the other memory (e.g., the decoded data exceeds a threshold), a portion of the other memory that is used during decoding of the encoded data may be disabled (such as by disconnecting a power signal and/or a clock signal to a portion of the memory). Moreover, the selective enabling and disabling may also be based on a variety of additional parameters associated with: either or both of the memories, the decoder, the media being decoded, the playback hardware, and/or the playback application.
- By determining when to selectively enable or disable one or more of these components (and, more generally, by transitioning one or more of these components between a sleep mode of operation and an active mode of operation), the control logic (and/or instructions) may be used to reduce power consumption in the device and/or system. In some embodiments, the control logic (and/or instructions) is used to adjust or optimize the power consumption associated with media playback during dynamic operation of the device and/or system.
- These techniques may be used in a wide variety of devices and/or systems. For example, the device and/or the system may include: a personal computer, a laptop computer, a cellular telephone, a personal digital assistant, an MP3 player, a portable television, an iPod (a trademark of Apple, Inc.), an iPhone, and/or a device that plays back one or more types of media.
- Circuits that conserve power in a device and/or a system in accordance with embodiments of the invention are now described. In the embodiments that follow, a technique is used to manage power consumption associated with decoding of audio data, such as audio files, in an audio decoder pipeline. However, in other embodiments the technique is applied to manage power consumption associated with decoding of other types of media (such as video) in another decoder pipeline and/or to manage power consumption associated with an arbitrary data pipeline. Note that the one or more circuits may be included on one or more integrated circuits, and that the one or more integrated circuits may be included in the device and/or the system.
-
FIG. 1 presents a block diagram illustrating an embodiment of acircuit 100.Decoder 114 in this circuit may receive encoded data from memory 110 (such as a buffer) and may provide decoded data tomemory 116. In an exemplary embodiment, the encoded data includes encoded audio data, which may be associated with a file (e.g., a song or an album). This audio data may be compatible with a variety of encoding or file formats, including: Advance Audio Coding (AAC), High Efficiency Advance Audio Coding (HE-AAC), an MPEG standard (such as MP3), Algebraic Code Excited Linear Prediction (ACELP), Apple Lossless Audio Codec (ALAC), Wave (WAV), Audio Interchange File Format (AIFF), Adaptive Multi-Rate (AMR), an Interactive Media Association (IMA) standard, and/or a QDesign Music Codec, as well as other encoding or file formats. However, note that thecircuit 100 may be used to decode a variety of types of media, such as video and/or encrypted data. -
Decoder 114 may use a portion of memory 110 (such as memory 112) during the receiving of the encoded data and/or a portion of memory 116 (such as memory 118) during the decoding of the encoded data. For example,memory 112 and/ormemory 118 may be used as temporary memory during the decoding. In some embodiments,memory 112 includes a different type of memory thanmemory 110, andmemory 118 includes a different type of memory thanmemory 116. For example,memory 112 and/or 118 may be SRAM andmemory 110 and/or 116 may be DRAM. However, a wide variety of types of memory may be used for these components in thecircuit 100, including: DRAM, SRAM, FLASH, solid-state memory, volatile memory, and/or non-volatile memory. Moreover, some or all ofmemory -
Memory 116 may store the decoded data until it is consumed by hardware consumer 120 (such as one or more audio circuits and speakers) on behalf of a media playback application or software that executes in the device and/or the system which includes thecircuit 100. When the decoded data is consumed (e.g., the decoded data is output to the hardware consumer 120), the consumed decoded data may be removed from thememory 116. Alternatively, consumed decoded data is no longer needed in thememory 116 and may be subsequently overwritten or erased. - In general, demand for decoded data may vary based on user commands and dynamic operation of the device and/or the system. During time intervals with low demand (relative to a rate at which the
decoder 114 outputs decoded data), decoded data may accumulate in thememory 116. This time variation in the amount of data in thememory 116 provides an opportunity to reduce power consumption in the device and/or the system, which typically have limited power resources, such as battery life. In particular,control logic 126 may be used to selectively transition at least a portion of the memory 110 (such as the memory 112), at least a portion of the memory 116 (such as the memory 118), and/or at least a portion of thedecoder 114 from an active mode of operation to a sleep mode of operation. For example, thecontrol logic 126 may output commands that selectively disable or decouple power signals provided by power supply 122 and/or clock signals provided byfrequency synthesizer 124 from the components that are being transitioned to the sleep mode of operation. Subsequently, thecontrol logic 126 may output additional commands that selectively enable or couple the power signals and/or the clock signals to the components that are being transitioned to the active mode of operation. - In some embodiments, the selective transitioning to or from the sleep mode of operation is based on one or more parameters, including: the amount of encoded data to be decoded in at least the portion of the
memory 110; the amount of decoded data in at least the portion of thememory 116; a rate at which data is decoded; a rate at which decoded data is consumed; a mode of playback; transient power consumption associated with the transition to the sleep mode of operation; transient power consumption associated with the transition from the sleep mode of operation; an amount of memory allocated to the decoding (such as the memory 118); and/or an amount of memory in thememory 116 allocated to storing decoded data. Consequently,control logic 126 may receive information from one or more components in thecircuit 100, as well as from the media playback application, from which thecontrol logic 126 determines whether or not to selectively transition to or from the sleep mode of operation. - As described below with reference to
FIG. 3 , note that in some embodiments the selective transitioning is gated by a state of thedecoder 114. For example, commands to be output from thecontrol logic 126 may be first approved by thedecoder 114. This chained decision-making process may improve operation of thedecoder 114. - Note that
control logic 126 may transition back to the active mode of operation (i.e., may abort the sleep mode of operation) if changes occur in the device and/or system. In an exemplary embodiment, thecontrol logic 126 selectively transitions to the active mode of operation if the mode of playing the decoded audio data is changed (such as during a seek operation) and if a new mode of playing increases a rate of consumption of the decoded audio data in thememory 116. Moreover, the sleep mode may be aborted if the amount of memory allocated for the decoded audio data is changed. For example, if the allocated memory is reduced to an amount that is less that a threshold associated with the decoded data (such that the threshold would never be reached), the sleep mode may be aborted. In some embodiments, thecontrol logic 126 selectively transitions to the active mode of operation if an end of a file associated with the encoded data is detected. - In an exemplary embodiment, the
decoder 114 builds up a large amount of decoded data in thememory 116 and, when the amount exceeds a threshold, thecontrol logic 126 turns off one or more components in the circuit 100 (such as thememory 118 and/or at least a portion of the decoder 114) for a time interval. For example, the user may pause the playback application, which stops thehardware consumer 120. However, the decoding may continue until thememory 116 has sufficient decoded data (e.g., the amount of decoded data exceeds the threshold), and then thecontrol logic 126 may turn off one or more components in thecircuit 100. If the user subsequently starts the playback application and the amount drops below another threshold (which may be the same or different from the threshold), the one or more components may be turned back on for another time interval. In general, thecontrol logic 126 may adjust both the period and the duty cycle associated with these intervals. - In another exemplary embodiment, the
control logic 126 disables a portion of thememory 110 that provides encoded data tomemory 112. After the portion of thememory 110 is disabled, thedecoder 114 may continue to receive (at least for a period of time) encoded data from thememory 112. - In yet another exemplary embodiment, the encoded data includes audio data sampled at 44.1 kHz and 4 kB of decoded data corresponding to 23 ms of playback time. If the threshold in the
memory 116 is at least 87 kB,memory 118 may be shut down for around 0.5 s. In other embodiments, one or more components in thecircuit 100 are in the sleep mode for between 0.5-1 s. - By selectively transitioning one or more components in the
circuit 100 to and from the sleep mode of operation, power consumption associated with the decoding pipeline illustrated in this circuit (and, more generally, with an arbitrary data pipeline) may be reduced, adjusted, and/or optimized. - Note that in some embodiments the
circuit 100 includes fewer or additional components. Moreover, two or more components can be combined into a single component and/or a position of one or more components can be changed. In some embodiments, some or all of the functions illustrated in thecircuit 100 are implemented in software. - Processes for conserving power, which may be performed by a device and/or a system, in accordance with embodiments of the invention are now described.
FIG. 2A presents a flowchart illustrating an embodiment of aprocess 200 for conserving power, which may be implemented by the device and/or the system. During operation, the system receives information from a memory and a decoder circuit (210), where the decoder circuit is configured to provide decoded audio data to the memory, and where the information indicates the amount of decoded audio data in the memory. Next, the system determines whether to selectively disable at least the portion of the memory based on the amount of decoded audio data in the memory (212), and provides commands to the memory and the decoder circuit that selectively disable at least the portion of the memory (214). -
FIG. 2B presents a flowchart illustrating an embodiment of aprocess 230 for conserving power, which may be implemented by the device and/or the system. During operation, the system receives information from a first memory and the decoder circuit (240), where the decoder circuit is configured to receive encoded audio data from the first memory and the first memory is configured to receive the encoded audio data from a second memory. Note that the information indicates an amount of encoded audio data in the first memory. - Next, the system determines whether to selectively disable at least a portion of the second memory based on the amount of encoded audio data in the first memory (242). Note that the decoder circuit is configured to receive the encoded audio data from the first memory even when the portion of the second memory is disabled. Then, the system provides the commands to the second memory and the decoder circuit that selectively disable at least the portion of the second memory (244).
-
FIG. 3 presents a flowchart illustrating an embodiment of aprocess 300 for conserving power, which may be implemented by the device and/or the system. During operation, the system receives encoded data (308) and decodes the encoded data (310). Next, the system writes the decoded data to abuffer 312. - If the amount of decoded data is less than a threshold (314),
operations process 300 returns tooperation 310, and if no, theprocess 300 continues. Note that this operation allows theprocess 300 to support continuous playback from file to file by not selectively disabling components in the circuit 100 (FIG. 1 ) when proximate to an EOF. - Next, the system determines if the suspension (i.e., the selective disabling) is valid (318). This operation is based on a current state of the decoder 114 (
FIG. 1 ). For example, is the decoder 114 (FIG. 1 ) in a known state with all buffers flushed and/or how well is the decoder currently performing (as indicated by decoding statistics)? As noted previously, this operation allows the decoder 114 (FIG. 1 ) to gate or veto a potential transition to sleep mode. If the suspension is not valid (318), theprocess 300 returns tooperation 310. However, if the suspension is valid (318), the system powers off (320) one or more components in the circuit 100 (FIG. 1 ). - Next, the system determines if an abort (326) condition, such as resizing (322) allocated memory (such as a portion of the
memory 116 inFIG. 1 ) and/or changing the playback mode (324), has occurred. For example, the allocated memory 116 (FIG. 1 ) may be changed to an appropriate size or based on a sample rate, and/or the user may seek to a different location in a file. If the abort condition is not detected, the system determines if the amount of decoded data is lower than the other threshold (328). If not,operations 326 and 328 repeat. - However, if an abort condition is detected (326) or if the amount of decoded data is lower than the other threshold (328), the system powers on (330) the one or more components. Then, the system analyzes a period/duty cycle (332) for the active and sleep modes, performs any necessary adjustments (334) to a clock speed based on desired power management and/or decoding performance, and returns to
operation 310 in theprocess 300. Note that the adjustment (334) may be performed on a file basis. In general, such optimization may be performed: once, periodically, after a time interval since a previous adjustment, and/or as needed. - Note that in some embodiments of the process 200 (
FIG. 2A ), 230 (FIG. 2B ), and/or 300 there may be additional or fewer operations, the order of the operations may be changed, and two or more operations may be combined into a single operation. - Duty cycles and periods for the active and sleep modes of operation in accordance with embodiments of the invention are now described.
FIG. 4A presents a graph illustrating an embodiment ofcommands 400 as a function of time. In this embodiment, the control logic 126 (FIG. 1 ) regularly transitions one or more components in the circuit 100 (FIG. 1 ) to and from the sleep mode of operation. This duty cycle and period may reflect a trade-off between start-up and shut-down energy costs. -
FIG. 4B presents a graph illustrating an embodiment ofcommands 420 as a function of time. In this embodiment, the control logic 126 (FIG. 1 ) may keep the circuit 100 (FIG. 1 ) on almost all the time, thereby accepting additional power consumption associated with such a fixed power overhead in exchange for continuous decoding of encoded data. This may be useful when the hardware consumer 120 (FIG. 1 ) consumes decoded data at a high rate. - However, if the rate of consumption is low, the control logic 126 (
FIG. 1 ) may selectively transition one or more components in the circuit 100 (FIG. 1 ) to the sleep mode for most of the time (i.e., a low active-mode duty cycle). This is shown inFIG. 4C , which presents a graph illustrating an embodiment ofcommands 440 as a function of time. - Devices and computer systems for implementing these power-management techniques in accordance with embodiments of the invention are now described.
FIG. 5 presents a block diagram illustrating an embodiment of aportable device 500, which may include a touch-sensitive screen 534. This device may include amemory controller 512, one or more data processors, image processors and/orcentral processing units 514, and aperipherals interface 516. Moreover, thememory controller 512, the one ormore processors 514, and/or the peripherals interface 516 may be separate components or may be integrated, such as on one or more integrated circuits. Note that the various components in theportable device 500 may be electrically coupled by one or more signal lines and/or communication buses. - Peripherals interface 516 may be electrically coupled to: an optional sensor 554 (such as CMOS or CCD image sensor), one or
more RF circuits 518, one or moreaudio circuits 522, and/or an input/output (I/O)subsystem 528. Theseaudio circuits 522 may be electrically coupled to aspeaker 524 and amicrophone 526. Note that theportable device 500 may support voice recognition and/or voice replication. - Moreover, the
RF circuits 518 may be electrically coupled to one ormore antennas 520 and may allow communication with one or more additional devices, computers and/or servers using a wireless network. Consequently, in some embodimentsportable device 500 supports one or more communication protocols, including: code division multiple access (CDMA), global system for mobile communications (GSM), Enhanced Data GSM Environment (EDGE), Wi-Fi (such as IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, and/or IEEE 802.11n), Bluetooth, Wi-MAX, a protocol for email, instant messaging, a simple message system (SMS), and/or any other suitable communication protocol (including communication protocols not yet developed as of the filing date of this document). In an exemplary embodiment, theportable device 500 is, at least in part, a cellular telephone. - In some embodiments, I/
O subsystem 528 includes a touch-screen controller 530 and/or other input controller(s) 532. This touch-screen controller may be electrically coupled to a touch-sensitive screen 534. Moreover, the touch-sensitive screen 534 and the touch-screen controller 530 may detect contact and any movement or break thereof using any of a plurality of touch-sensitivity technologies, including but not limited to: capacitive, resistive, infrared, and/or surface acoustic wave technologies, as well as other proximity sensor arrays or other elements for determining one or more points of contact with the touch-sensitive screen 534. In an exemplary embodiment, the touch-sensitive screen 534 has a resolution in excess of 100 dpi, such as approximately 168 dpi. - Note that the other input controller(s) 532 may be electrically coupled to other input/
control devices 536, such as: one or more physical buttons, a keyboard, an infrared port, a USB port, and/or a pointer device (such as a mouse). Moreover, the one or more physical buttons may include an up/down button for volume control of thespeaker 524 and/or themicrophone 526. - In some embodiments, the one or more physical buttons include a push button. By quickly pressing the push button, a user of the
portable device 500 may disengage locking of the touch-sensitive screen 534. Alternatively, by pressing the push button for a longer time interval, the user may turn power to theportable device 500 on or off. Moreover, the touch-sensitive screen 534 may be used to implement virtual or soft buttons and/or a keyboard. Note that the user may be able to customize a functionality of one or more of the virtual and/or physical buttons. - In some embodiments, the
portable device 500 includes circuits for supporting a location determining capability, such as that provided by the global positioning system (GPS). Moreover, theportable device 500 may be used to play back recorded music, such as one or more files, including MP3 files or AAC files. Consequently, in some embodiments theportable device 500 includes the functionality of an MP3 player, such as an iPod (trademark of Apple, Inc.). Therefore, theportable device 500 may include a connector that is compatible with the iPod™. -
Memory controller 512 may be electrically coupled tomemory 510.Memory 510 may include high-speed random access memory and/or non-volatile memory, such as: one or more magnetic disk storage devices, one or more optical storage devices, and/or FLASH memory.Memory 510 may store anoperating system 538, such as: Darwin, RTXC, LINUX, UNIX, OS X, Windows, and/or an embedded operating system such as VxWorks. This operating system may include procedures (or sets of instructions) for handling basic system services and for performing hardware-dependent tasks. Moreover,memory 510 may also store communication procedures (or sets of instructions) in acommunication module 540. These communication procedures may be used for communicating with one or more additional devices, one or more computers and/or one or more servers. -
Memory 510 may include a touch-screen module 542 (or a set of instructions), a decoder module 544 (or a set of instructions), and/or a power-management module 546 (or a set of instructions). Touch-screen module 542 may provide graphics associated with the virtual buttons and/or keyboard. Moreover, thedecoder module 544 may receive encodeddata 550 to produce decodeddata 552, which is consumed by one ormore media applications 548. In some embodiments, the power-management module 546 (and/or one or more circuits that implement the functionality of the power-management module 546) may selectively transition one or more components associated with thedecoder module 544 to and/or from a sleep mode of operation. - Note that each of the above-identified modules and applications corresponds to a set of instructions for performing one or more functions described above. These modules (e.g., sets of instructions) need not be implemented as separate software programs, procedures or modules. Consequently, the various modules and sub-modules may be rearranged and/or combined. Moreover,
memory 510 may include additional modules and/or sub-modules, or fewer modules and/or sub-modules. Therefore,memory 510 may include a subset or a superset of the above-identified modules and/or sub-modules. - Moreover, instructions in the various modules in the
memory 510 may be implemented in a high-level procedural language, an object-oriented programming language, and/or in an assembly or machine language. The programming language may be compiled or interpreted, e.g., configurable or configured to be executed by the one ormore processing units 514. Consequently, the instructions may include high-level code in a program module and/or low-level code, which is executed by the processor(s) 514 in theportable device 500. Note that various functions of thedevice 500 may be implemented in hardware and/or in software, including in one or more signal processing and/or application-specific integrated circuits. -
FIG. 6 presents a block diagram illustrating an embodiment of acomputer system 600.Computer system 600 can include: one ormore processors 610, acommunication interface 612, auser interface 614,speakers 608, and/or one ormore signal lines 622 electrically coupling these components together. Note that the one ormore processing units 610 may support parallel processing and/or multi-threaded operation, thecommunication interface 612 may have a persistent communication connection, and the one ormore signal lines 622 may constitute a communication bus. Moreover, theuser interface 614 may include: adisplay 616, akeyboard 618, and/or apointer 620, such as a mouse. -
Memory 624 in thecomputer system 600 may include volatile memory and/or non-volatile memory. More specifically,memory 624 may include: ROM, RAM, EPROM, EEPROM, FLASH, one or more smart cards, one or more magnetic disc storage devices, and/or one or more optical storage devices.Memory 624 may store anoperating system 626 that includes procedures (or a set of instructions) for handling various basic system services for performing hardware-dependent tasks.Memory 624 may also store communication procedures (or a set of instructions) in acommunication module 628. These communication procedures may be used for communicating with one or more computers and/or servers, including computers and/or servers that are remotely located with respect to thecomputer system 600. -
Memory 624 may include multiple program modules (or a set of instructions), including: display module 630 (or a set of instructions), decoder module 636 (or a set of instructions), and/or power-management module 638 (or a set of instructions).Display module 630 may provide graphics for display ondisplay 616. Moreover, thedecoder module 636 may receive encoded data 632 (such as file A 634-1 and/or file B 634-2) and may produce decoded data 640 (such as file A 642-1 and/or file B 642-2), which is consumed by one ormore media applications 644. In some embodiments, the power-management module 638 (and/or one or more circuits that implement the functionality of the power-management module 638) may selectively transition one or more components associated with thedecoder module 636 to and/or from a sleep mode of operation. - Instructions in the various modules in the
memory 624 may be implemented in a high-level procedural language, an object-oriented programming language, and/or in an assembly or machine language. The programming language may be compiled or interpreted, e.g., configurable or configured to be executed by the one ormore processing units 610. Consequently, the instructions may include high-level code in a program module and/or low-level code, which is executed by theprocessor 610 in thecomputer system 600. - Although the
computer system 600 is illustrated as having a number of discrete components,FIG. 6 is intended to provide a functional description of the various features that may be present in thecomputer system 600 rather than a structural schematic of the embodiments described herein. In practice, and as recognized by those of ordinary skill in the art, the functions of thecomputer system 600 may be distributed over a large number of servers or computers, with various groups of the servers or computers performing particular subsets of the functions. In some embodiments, some or all of the functionality of thecomputer system 600 may be implemented in one or more application-specific integrated circuits (ASICs) and/or one or more digital signal processors (DSPs). -
Computer system 600 may include fewer components or additional components. Moreover, two or more components can be combined into a single component and/or a position of one or more components can be changed. In some embodiments the functionality of thecomputer system 600 may be implemented more in hardware and less in software, or less in hardware and more in software, as is known in the art. - Data structures that may be used in the portable device 500 (
FIG. 5 ) and/or thecomputer system 600 in accordance with embodiments of the invention are now described.FIG. 7 presents a block diagram illustrating an embodiment of adata structure 700. This data structure may include one or more instances of power-management conditions 710, which may be used to determine when to selectively transition to and/or from the sleep mode of operation. A given instance of the power-management conditions, such as power-management conditions 710-1, may include: a targeted duty cycle 712-1, a targeted period 714-1, one or more thresholds 716-1, acceptable decoder states 718-1, and/or one or more abort conditions 720-1. - Note that in some embodiments of the
data structure 700 there may be fewer or additional components. Moreover, two or more components can be combined into a single component and/or a position of one or more components can be changed. - The foregoing descriptions of embodiments of the present invention have been presented for purposes of illustration and description only. They are not intended to be exhaustive or to limit the present invention to the forms disclosed. Accordingly, many modifications and variations will be apparent to practitioners skilled in the art. Additionally, the above disclosure is not intended to limit the present invention. The scope of the present invention is defined by the appended claims.
Claims (22)
1. (canceled)
2. A system, comprising:
a first memory configured to store encoded audio data;
a second memory configured to store decoded audio data;
a decoder circuit configured to receive encoded audio data from the first memory and to output decoded audio data to the second memory; and
control logic electrically coupled to the first memory, the second memory, and the decoder circuit, the control logic configured to perform at least one of:
selectively disabling at least a portion of the first memory by decoupling a power signal thereto, the selective disabling based at least in part on periodically received information indicating an amount of encoded audio data in the first memory; and
selectively disabling at least a portion of the second memory by decoupling a power signal thereto, the selective disabling based at least in part on periodically received information indicating an amount of decoded audio data in the second memory.
3. The system of claim 2 , wherein the control logic is further configured to selectively disable the decoder circuit based at least in part on at least one of:
periodically received information indicating an amount of encoded audio data in the first memory; and
periodically received information indicating an amount of decoded audio data in the second memory.
4. The system of claim 3 , wherein the control logic is further configured to selectively disable at least one of the at least a portion of the first memory, the at least a portion of the second memory, and the decoder circuit when the amount of decoded audio data in the second memory exceeds a first pre-determined value.
5. The system of claim 3 , wherein the control logic is further configured to selectively re-enable the decoder circuit based at least in part on at least one of:
periodically received information indicating an amount of encoded audio data in the first memory; and
periodically received information indicating an amount of decoded audio data in the second memory.
6. The system of claim 5 , wherein the control logic is further configured to:
selectively re-enable at least a portion of the first memory by coupling a power signal to the at least a portion of the first memory, selective re-enabling based at least in part on periodically received information indicating an amount of encoded audio data in the first memory; and
selectively re-enable at least a portion of the second memory by coupling a power signal to the at least a portion of the first memory, selective re-enabling based at least in part on periodically received information indicating an amount of encoded audio data in the first memory.
7. The system of claim 6 , wherein the control logic is further configured to:
selectively disable at least one of the at least a portion of the first memory, the at least a portion of the second memory, and the decoder circuit when the amount of decoded audio data in the second memory exceeds a first pre-determined value, and
selectively re-enable at least one of the at least a portion of the first memory, the at least a portion of the second memory, and the decoder circuit when the amount of decoded audio data in the second memory is less than a second pre-determined value.
8. The system of claim 7 , wherein the first pre-determined value is different from the second pre-determined value.
9. The system of claim 2 , wherein the control logic is further configured to:
selectively re-enable at least a portion of the first memory by coupling a power signal to the at least a portion of the first memory, the selective re-enabling based at least in part on periodically received information indicating an amount of encoded audio data in the first memory; and
selectively re-enable at least a portion of the second memory by coupling a power signal to the at least a portion of the first memory, the selective re-enabling based at least in part on periodically received information indicating an amount of encoded audio data in the first memory.
10. The system of claim 2 , wherein the control logic is configured to select a duty cycle or a period for the selective disabling.
11. The system of claim 2 , wherein the control logic is further configured to selectively decouple and couple a clock signal used by the at least a portion of the first memory or the at least a portion of the second memory.
12. The system of claim 2 , wherein the selective disabling is based on transient power consumption associated with disabling the at least a portion of the first memory or the at least a portion of the second memory.
13. The system of claim 2 , wherein the selective disabling of at least a portion of the second memory is further based on one or more conditions selected from the group consisting of:
an amount of audio data remaining to be decoded;
a rate of decoding of audio data;
an amount of memory allocated for decoded audio data;
a change in an amount of memory allocated for decoded audio data;
a change in a mode of playing decoded audio data;
an increase of consumption of decoded audio data;
detection of an end of file associated with decoded audio data; and
a state of the decoder circuit.
14. The system of claim 13 , wherein the control logic is further configured to abort the selective disabling of the at least a portion of the second memory when an amount of memory allocated for the decoded audio data is changed.
15. A method for conserving power in an electronic device, the electronic device comprising a first memory, a second memory, a decoder circuit, wherein the decoder circuit is configured to receive encoded audio data from the first memory and provide decoded audio data to the second memory, and control logic coupled to the first memory, the second memory, and the decoder circuit, the method comprising:
periodically receiving at the control logic information indicating at least one of an amount of encoded audio data in the first memory and the amount of decoded audio data in the second memory; and at least one of:
using the control logic to selectively enable at least a portion of the first memory by coupling a power signal thereto based at least in part on periodically received information; and
using the control logic to selectively enable at least a portion of the second memory by coupling a power signal thereto based at least in part on periodically received information.
16. The method of claim 15 wherein:
using the control logic to selectively enable at least a portion of the first memory by coupling a power signal thereto further comprises selectively disabling at least a portion of the first memory by decoupling a power signal thereto; and
using the control logic to selectively enable at least a portion of the second memory by coupling a power signal thereto further comprises selectively disabling at least a portion of the second memory by decoupling a power signal thereto.
17. The method of claim 15 further comprising using the control logic to selectively enable the decoder circuit based at least in part on periodically received information.
18. The method of claim 17 , wherein the control logic is further configured to selectively disable at least one of the at least a portion of the first memory, the at least a portion of the second memory, and the decoder circuit when an amount of decoded audio data in the second memory exceeds a first pre-determined value.
19. The method of claim 18 , wherein the control logic is further configured to:
selectively disable at least one of the at least a portion of the first memory, the at least a portion of the second memory, and the decoder circuit when an amount of decoded audio data in the second memory exceeds a first pre-determined value, and
selectively re-enable at least one of the at least a portion of the first memory, the at least a portion of the second memory, and the decoder circuit when an amount of decoded audio data in the second memory is less than a second pre-determined value.
20. The method of claim 19 , wherein the first pre-determined value is different from the second pre-determined value.
21. A computer readable storage medium having stored thereon instructions executable by a processor, the instructions causing the processor to:
periodically receive information from one or more of a first memory, a second memory, and a decoder circuit, the decoder circuit being configured to receive encoded audio data from the first memory and provide decoded audio data to the second memory, periodically received information indicating at least one of an amount of encoded audio data in the first memory and an amount of decoded audio data in the second memory;
selectively disable at least a portion of the first memory by decoupling a power signal to the at least a portion of the first memory based at least in part on periodically received information;
selectively disable at least a portion of the second memory by decoupling a power signal to the at least a portion of the first memory based at least in part on periodically received information;
selectively disable the decoder circuit based at least in part on periodically received information.
22. The computer readable medium of claim 21 wherein:
the instructions to cause the processor to selectively disable at least a portion of the first memory by decoupling a power signal thereto further comprise instructions causing the processor to selectively enable at least a portion of the first memory by coupling a power signal thereto; and
the instructions to cause the processor to selectively disable at least a portion of the second memory by decoupling a power signal thereto further comprise instructions to cause the processor to selectively enable at least a portion of the second memory by coupling a power signal thereto.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/495,229 US20170269673A1 (en) | 2007-06-28 | 2017-04-24 | Power-gating media decoders to reduce power consumption |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/770,446 US9632561B2 (en) | 2007-06-28 | 2007-06-28 | Power-gating media decoders to reduce power consumption |
US15/495,229 US20170269673A1 (en) | 2007-06-28 | 2017-04-24 | Power-gating media decoders to reduce power consumption |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/770,446 Continuation US9632561B2 (en) | 2007-06-28 | 2007-06-28 | Power-gating media decoders to reduce power consumption |
Publications (1)
Publication Number | Publication Date |
---|---|
US20170269673A1 true US20170269673A1 (en) | 2017-09-21 |
Family
ID=40160265
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/770,446 Active 2030-07-13 US9632561B2 (en) | 2007-06-28 | 2007-06-28 | Power-gating media decoders to reduce power consumption |
US15/495,229 Abandoned US20170269673A1 (en) | 2007-06-28 | 2017-04-24 | Power-gating media decoders to reduce power consumption |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/770,446 Active 2030-07-13 US9632561B2 (en) | 2007-06-28 | 2007-06-28 | Power-gating media decoders to reduce power consumption |
Country Status (1)
Country | Link |
---|---|
US (2) | US9632561B2 (en) |
Families Citing this family (182)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8645137B2 (en) | 2000-03-16 | 2014-02-04 | Apple Inc. | Fast, language-independent method for user authentication by voice |
US8677377B2 (en) | 2005-09-08 | 2014-03-18 | Apple Inc. | Method and apparatus for building an intelligent automated assistant |
US9318108B2 (en) | 2010-01-18 | 2016-04-19 | Apple Inc. | Intelligent automated assistant |
US8977255B2 (en) | 2007-04-03 | 2015-03-10 | Apple Inc. | Method and system for operating a multi-function portable electronic device using voice-activation |
US20090110051A1 (en) * | 2007-10-29 | 2009-04-30 | Lindsay Steven B | Method and system for reducing the impact of latency on video processing |
US10002189B2 (en) | 2007-12-20 | 2018-06-19 | Apple Inc. | Method and apparatus for searching using an active ontology |
US9330720B2 (en) | 2008-01-03 | 2016-05-03 | Apple Inc. | Methods and apparatus for altering audio output signals |
US20090240802A1 (en) * | 2008-03-18 | 2009-09-24 | Hewlett-Packard Development Company L.P. | Method and apparatus for self tuning network stack |
US8996376B2 (en) | 2008-04-05 | 2015-03-31 | Apple Inc. | Intelligent text-to-speech conversion |
US10496753B2 (en) | 2010-01-18 | 2019-12-03 | Apple Inc. | Automatically adapting user interfaces for hands-free interaction |
US20100030549A1 (en) | 2008-07-31 | 2010-02-04 | Lee Michael M | Mobile device having human language translation capability with positional feedback |
US8041848B2 (en) | 2008-08-04 | 2011-10-18 | Apple Inc. | Media processing method and device |
US8676904B2 (en) | 2008-10-02 | 2014-03-18 | Apple Inc. | Electronic devices with voice command and contextual data processing capabilities |
US9959870B2 (en) | 2008-12-11 | 2018-05-01 | Apple Inc. | Speech recognition involving a mobile device |
US9858925B2 (en) | 2009-06-05 | 2018-01-02 | Apple Inc. | Using context information to facilitate processing of commands in a virtual assistant |
US10241644B2 (en) | 2011-06-03 | 2019-03-26 | Apple Inc. | Actionable reminder entries |
US20120311585A1 (en) | 2011-06-03 | 2012-12-06 | Apple Inc. | Organizing task items that represent tasks to perform |
US10241752B2 (en) | 2011-09-30 | 2019-03-26 | Apple Inc. | Interface for a virtual digital assistant |
JP2011008311A (en) * | 2009-06-23 | 2011-01-13 | Casio Computer Co Ltd | Input/output control device and electronic musical instrument |
US9431006B2 (en) | 2009-07-02 | 2016-08-30 | Apple Inc. | Methods and apparatuses for automatic speech recognition |
US8346203B2 (en) * | 2009-08-14 | 2013-01-01 | Apple Inc. | Power management techniques for buffering and playback of audio broadcast data |
US8706272B2 (en) * | 2009-08-14 | 2014-04-22 | Apple Inc. | Adaptive encoding and compression of audio broadcast data |
US9300969B2 (en) | 2009-09-09 | 2016-03-29 | Apple Inc. | Video storage |
US10705794B2 (en) | 2010-01-18 | 2020-07-07 | Apple Inc. | Automatically adapting user interfaces for hands-free interaction |
US10553209B2 (en) | 2010-01-18 | 2020-02-04 | Apple Inc. | Systems and methods for hands-free notification summaries |
US10679605B2 (en) | 2010-01-18 | 2020-06-09 | Apple Inc. | Hands-free list-reading by intelligent automated assistant |
US10276170B2 (en) | 2010-01-18 | 2019-04-30 | Apple Inc. | Intelligent automated assistant |
US8682460B2 (en) * | 2010-02-06 | 2014-03-25 | Apple Inc. | System and method for performing audio processing operations by storing information within multiple memories |
US8682667B2 (en) | 2010-02-25 | 2014-03-25 | Apple Inc. | User profiling for selecting user specific voice input processing information |
US8639516B2 (en) | 2010-06-04 | 2014-01-28 | Apple Inc. | User-specific noise suppression for voice quality improvements |
US10762293B2 (en) | 2010-12-22 | 2020-09-01 | Apple Inc. | Using parts-of-speech tagging and named entity recognition for spelling correction |
US9262612B2 (en) | 2011-03-21 | 2016-02-16 | Apple Inc. | Device access using voice authentication |
US10057736B2 (en) | 2011-06-03 | 2018-08-21 | Apple Inc. | Active transport based notifications |
US8994660B2 (en) | 2011-08-29 | 2015-03-31 | Apple Inc. | Text correction processing |
US10134385B2 (en) | 2012-03-02 | 2018-11-20 | Apple Inc. | Systems and methods for name pronunciation |
US9483461B2 (en) | 2012-03-06 | 2016-11-01 | Apple Inc. | Handling speech synthesis of content for multiple languages |
US9280610B2 (en) | 2012-05-14 | 2016-03-08 | Apple Inc. | Crowd sourcing information to fulfill user requests |
US10417037B2 (en) | 2012-05-15 | 2019-09-17 | Apple Inc. | Systems and methods for integrating third party services with a digital assistant |
US9721563B2 (en) | 2012-06-08 | 2017-08-01 | Apple Inc. | Name recognition system |
US9495129B2 (en) | 2012-06-29 | 2016-11-15 | Apple Inc. | Device, method, and user interface for voice-activated navigation and browsing of a document |
KR101951171B1 (en) | 2012-08-09 | 2019-02-25 | 삼성전자 주식회사 | Multimedia processing system and operating method thereof |
US9576574B2 (en) | 2012-09-10 | 2017-02-21 | Apple Inc. | Context-sensitive handling of interruptions by intelligent digital assistant |
US9547647B2 (en) | 2012-09-19 | 2017-01-17 | Apple Inc. | Voice-based media searching |
US10199051B2 (en) | 2013-02-07 | 2019-02-05 | Apple Inc. | Voice trigger for a digital assistant |
US9076530B2 (en) * | 2013-02-07 | 2015-07-07 | Seagate Technology Llc | Non-volatile write buffer data retention pending scheduled verification |
US9368114B2 (en) | 2013-03-14 | 2016-06-14 | Apple Inc. | Context-sensitive handling of interruptions |
US10652394B2 (en) | 2013-03-14 | 2020-05-12 | Apple Inc. | System and method for processing voicemail |
WO2014144579A1 (en) | 2013-03-15 | 2014-09-18 | Apple Inc. | System and method for updating an adaptive speech recognition model |
CN105027197B (en) | 2013-03-15 | 2018-12-14 | 苹果公司 | Training at least partly voice command system |
WO2014197334A2 (en) | 2013-06-07 | 2014-12-11 | Apple Inc. | System and method for user-specified pronunciation of words for speech synthesis and recognition |
US9582608B2 (en) | 2013-06-07 | 2017-02-28 | Apple Inc. | Unified ranking with entropy-weighted information for phrase-based semantic auto-completion |
WO2014197336A1 (en) | 2013-06-07 | 2014-12-11 | Apple Inc. | System and method for detecting errors in interactions with a voice-based digital assistant |
WO2014197335A1 (en) | 2013-06-08 | 2014-12-11 | Apple Inc. | Interpreting and acting upon commands that involve sharing information with remote devices |
US10176167B2 (en) | 2013-06-09 | 2019-01-08 | Apple Inc. | System and method for inferring user intent from speech inputs |
CN110442699A (en) | 2013-06-09 | 2019-11-12 | 苹果公司 | Operate method, computer-readable medium, electronic equipment and the system of digital assistants |
KR101809808B1 (en) | 2013-06-13 | 2017-12-15 | 애플 인크. | System and method for emergency calls initiated by voice command |
DE112014003653B4 (en) | 2013-08-06 | 2024-04-18 | Apple Inc. | Automatically activate intelligent responses based on activities from remote devices |
US10296160B2 (en) | 2013-12-06 | 2019-05-21 | Apple Inc. | Method for extracting salient dialog usage from live data |
US9620105B2 (en) | 2014-05-15 | 2017-04-11 | Apple Inc. | Analyzing audio input for efficient speech and music recognition |
US10592095B2 (en) | 2014-05-23 | 2020-03-17 | Apple Inc. | Instantaneous speaking of content on touch devices |
US9502031B2 (en) | 2014-05-27 | 2016-11-22 | Apple Inc. | Method for supporting dynamic grammars in WFST-based ASR |
US10078631B2 (en) | 2014-05-30 | 2018-09-18 | Apple Inc. | Entropy-guided text prediction using combined word and character n-gram language models |
US9785630B2 (en) | 2014-05-30 | 2017-10-10 | Apple Inc. | Text prediction using combined word N-gram and unigram language models |
US9734193B2 (en) | 2014-05-30 | 2017-08-15 | Apple Inc. | Determining domain salience ranking from ambiguous words in natural speech |
US9715875B2 (en) | 2014-05-30 | 2017-07-25 | Apple Inc. | Reducing the need for manual start/end-pointing and trigger phrases |
US9633004B2 (en) | 2014-05-30 | 2017-04-25 | Apple Inc. | Better resolution when referencing to concepts |
EP3480811A1 (en) | 2014-05-30 | 2019-05-08 | Apple Inc. | Multi-command single utterance input method |
US9842101B2 (en) | 2014-05-30 | 2017-12-12 | Apple Inc. | Predictive conversion of language input |
US9430463B2 (en) | 2014-05-30 | 2016-08-30 | Apple Inc. | Exemplar-based natural language processing |
US9760559B2 (en) | 2014-05-30 | 2017-09-12 | Apple Inc. | Predictive text input |
US10170123B2 (en) | 2014-05-30 | 2019-01-01 | Apple Inc. | Intelligent assistant for home automation |
US10289433B2 (en) | 2014-05-30 | 2019-05-14 | Apple Inc. | Domain specific language for encoding assistant dialog |
US9338493B2 (en) | 2014-06-30 | 2016-05-10 | Apple Inc. | Intelligent automated assistant for TV user interactions |
US10659851B2 (en) | 2014-06-30 | 2020-05-19 | Apple Inc. | Real-time digital assistant knowledge updates |
US10446141B2 (en) | 2014-08-28 | 2019-10-15 | Apple Inc. | Automatic speech recognition based on user feedback |
US9818400B2 (en) | 2014-09-11 | 2017-11-14 | Apple Inc. | Method and apparatus for discovering trending terms in speech requests |
US10789041B2 (en) | 2014-09-12 | 2020-09-29 | Apple Inc. | Dynamic thresholds for always listening speech trigger |
US9646609B2 (en) | 2014-09-30 | 2017-05-09 | Apple Inc. | Caching apparatus for serving phonetic pronunciations |
US9668121B2 (en) | 2014-09-30 | 2017-05-30 | Apple Inc. | Social reminders |
US10074360B2 (en) | 2014-09-30 | 2018-09-11 | Apple Inc. | Providing an indication of the suitability of speech recognition |
US9886432B2 (en) | 2014-09-30 | 2018-02-06 | Apple Inc. | Parsimonious handling of word inflection via categorical stem + suffix N-gram language models |
US10127911B2 (en) | 2014-09-30 | 2018-11-13 | Apple Inc. | Speaker identification and unsupervised speaker adaptation techniques |
US10552013B2 (en) | 2014-12-02 | 2020-02-04 | Apple Inc. | Data detection |
US9711141B2 (en) | 2014-12-09 | 2017-07-18 | Apple Inc. | Disambiguating heteronyms in speech synthesis |
US10152299B2 (en) | 2015-03-06 | 2018-12-11 | Apple Inc. | Reducing response latency of intelligent automated assistants |
US9865280B2 (en) | 2015-03-06 | 2018-01-09 | Apple Inc. | Structured dictation using intelligent automated assistants |
US9721566B2 (en) | 2015-03-08 | 2017-08-01 | Apple Inc. | Competing devices responding to voice triggers |
US10567477B2 (en) | 2015-03-08 | 2020-02-18 | Apple Inc. | Virtual assistant continuity |
US9886953B2 (en) | 2015-03-08 | 2018-02-06 | Apple Inc. | Virtual assistant activation |
US9899019B2 (en) | 2015-03-18 | 2018-02-20 | Apple Inc. | Systems and methods for structured stem and suffix language models |
US9842105B2 (en) | 2015-04-16 | 2017-12-12 | Apple Inc. | Parsimonious continuous-space phrase representations for natural language processing |
US10460227B2 (en) | 2015-05-15 | 2019-10-29 | Apple Inc. | Virtual assistant in a communication session |
US10083688B2 (en) | 2015-05-27 | 2018-09-25 | Apple Inc. | Device voice control for selecting a displayed affordance |
US10127220B2 (en) | 2015-06-04 | 2018-11-13 | Apple Inc. | Language identification from short strings |
US9578173B2 (en) | 2015-06-05 | 2017-02-21 | Apple Inc. | Virtual assistant aided communication with 3rd party service in a communication session |
US10101822B2 (en) | 2015-06-05 | 2018-10-16 | Apple Inc. | Language input correction |
US10255907B2 (en) | 2015-06-07 | 2019-04-09 | Apple Inc. | Automatic accent detection using acoustic models |
US10186254B2 (en) | 2015-06-07 | 2019-01-22 | Apple Inc. | Context-based endpoint detection |
US11025565B2 (en) | 2015-06-07 | 2021-06-01 | Apple Inc. | Personalized prediction of responses for instant messaging |
US20160378747A1 (en) | 2015-06-29 | 2016-12-29 | Apple Inc. | Virtual assistant for media playback |
US10671428B2 (en) | 2015-09-08 | 2020-06-02 | Apple Inc. | Distributed personal assistant |
US10747498B2 (en) | 2015-09-08 | 2020-08-18 | Apple Inc. | Zero latency digital assistant |
US9697820B2 (en) | 2015-09-24 | 2017-07-04 | Apple Inc. | Unit-selection text-to-speech synthesis using concatenation-sensitive neural networks |
US10366158B2 (en) | 2015-09-29 | 2019-07-30 | Apple Inc. | Efficient word encoding for recurrent neural network language models |
US11010550B2 (en) | 2015-09-29 | 2021-05-18 | Apple Inc. | Unified language modeling framework for word prediction, auto-completion and auto-correction |
US11587559B2 (en) | 2015-09-30 | 2023-02-21 | Apple Inc. | Intelligent device identification |
US10691473B2 (en) | 2015-11-06 | 2020-06-23 | Apple Inc. | Intelligent automated assistant in a messaging environment |
US10049668B2 (en) | 2015-12-02 | 2018-08-14 | Apple Inc. | Applying neural network language models to weighted finite state transducers for automatic speech recognition |
US10223066B2 (en) | 2015-12-23 | 2019-03-05 | Apple Inc. | Proactive assistance based on dialog communication between devices |
US10446143B2 (en) | 2016-03-14 | 2019-10-15 | Apple Inc. | Identification of voice inputs providing credentials |
US9934775B2 (en) | 2016-05-26 | 2018-04-03 | Apple Inc. | Unit-selection text-to-speech synthesis based on predicted concatenation parameters |
US9972304B2 (en) | 2016-06-03 | 2018-05-15 | Apple Inc. | Privacy preserving distributed evaluation framework for embedded personalized systems |
US11227589B2 (en) | 2016-06-06 | 2022-01-18 | Apple Inc. | Intelligent list reading |
US10249300B2 (en) | 2016-06-06 | 2019-04-02 | Apple Inc. | Intelligent list reading |
US10049663B2 (en) | 2016-06-08 | 2018-08-14 | Apple, Inc. | Intelligent automated assistant for media exploration |
DK179309B1 (en) | 2016-06-09 | 2018-04-23 | Apple Inc | Intelligent automated assistant in a home environment |
US10509862B2 (en) | 2016-06-10 | 2019-12-17 | Apple Inc. | Dynamic phrase expansion of language input |
US10192552B2 (en) | 2016-06-10 | 2019-01-29 | Apple Inc. | Digital assistant providing whispered speech |
US10490187B2 (en) | 2016-06-10 | 2019-11-26 | Apple Inc. | Digital assistant providing automated status report |
US10586535B2 (en) | 2016-06-10 | 2020-03-10 | Apple Inc. | Intelligent digital assistant in a multi-tasking environment |
US10067938B2 (en) | 2016-06-10 | 2018-09-04 | Apple Inc. | Multilingual word prediction |
DK179343B1 (en) | 2016-06-11 | 2018-05-14 | Apple Inc | Intelligent task discovery |
DK179415B1 (en) | 2016-06-11 | 2018-06-14 | Apple Inc | Intelligent device arbitration and control |
DK179049B1 (en) | 2016-06-11 | 2017-09-18 | Apple Inc | Data driven natural language event detection and classification |
DK201670540A1 (en) | 2016-06-11 | 2018-01-08 | Apple Inc | Application integration with a digital assistant |
US10474753B2 (en) | 2016-09-07 | 2019-11-12 | Apple Inc. | Language identification using recurrent neural networks |
US10043516B2 (en) | 2016-09-23 | 2018-08-07 | Apple Inc. | Intelligent automated assistant |
US11281993B2 (en) | 2016-12-05 | 2022-03-22 | Apple Inc. | Model and ensemble compression for metric learning |
US10593346B2 (en) | 2016-12-22 | 2020-03-17 | Apple Inc. | Rank-reduced token representation for automatic speech recognition |
US11204787B2 (en) | 2017-01-09 | 2021-12-21 | Apple Inc. | Application integration with a digital assistant |
US10417266B2 (en) | 2017-05-09 | 2019-09-17 | Apple Inc. | Context-aware ranking of intelligent response suggestions |
DK201770383A1 (en) | 2017-05-09 | 2018-12-14 | Apple Inc. | User interface for correcting recognition errors |
US10726832B2 (en) | 2017-05-11 | 2020-07-28 | Apple Inc. | Maintaining privacy of personal information |
US10395654B2 (en) | 2017-05-11 | 2019-08-27 | Apple Inc. | Text normalization based on a data-driven learning network |
DK201770439A1 (en) | 2017-05-11 | 2018-12-13 | Apple Inc. | Offline personal assistant |
DK179745B1 (en) | 2017-05-12 | 2019-05-01 | Apple Inc. | SYNCHRONIZATION AND TASK DELEGATION OF A DIGITAL ASSISTANT |
US11301477B2 (en) | 2017-05-12 | 2022-04-12 | Apple Inc. | Feedback analysis of a digital assistant |
DK179496B1 (en) | 2017-05-12 | 2019-01-15 | Apple Inc. | USER-SPECIFIC Acoustic Models |
DK201770428A1 (en) | 2017-05-12 | 2019-02-18 | Apple Inc. | Low-latency intelligent automated assistant |
DK201770432A1 (en) | 2017-05-15 | 2018-12-21 | Apple Inc. | Hierarchical belief states for digital assistants |
DK201770431A1 (en) | 2017-05-15 | 2018-12-20 | Apple Inc. | Optimizing dialogue policy decisions for digital assistants using implicit feedback |
DK179549B1 (en) | 2017-05-16 | 2019-02-12 | Apple Inc. | Far-field extension for digital assistant services |
US10403278B2 (en) | 2017-05-16 | 2019-09-03 | Apple Inc. | Methods and systems for phonetic matching in digital assistant services |
US10311144B2 (en) | 2017-05-16 | 2019-06-04 | Apple Inc. | Emoji word sense disambiguation |
US20180336275A1 (en) | 2017-05-16 | 2018-11-22 | Apple Inc. | Intelligent automated assistant for media exploration |
US10657328B2 (en) | 2017-06-02 | 2020-05-19 | Apple Inc. | Multi-task recurrent neural network architecture for efficient morphology handling in neural language modeling |
US10445429B2 (en) | 2017-09-21 | 2019-10-15 | Apple Inc. | Natural language understanding using vocabularies with compressed serialized tries |
US10755051B2 (en) | 2017-09-29 | 2020-08-25 | Apple Inc. | Rule-based natural language processing |
US10636424B2 (en) | 2017-11-30 | 2020-04-28 | Apple Inc. | Multi-turn canned dialog |
US10733982B2 (en) | 2018-01-08 | 2020-08-04 | Apple Inc. | Multi-directional dialog |
US10733375B2 (en) | 2018-01-31 | 2020-08-04 | Apple Inc. | Knowledge-based framework for improving natural language understanding |
US10789959B2 (en) | 2018-03-02 | 2020-09-29 | Apple Inc. | Training speaker recognition models for digital assistants |
US10592604B2 (en) | 2018-03-12 | 2020-03-17 | Apple Inc. | Inverse text normalization for automatic speech recognition |
US10818288B2 (en) | 2018-03-26 | 2020-10-27 | Apple Inc. | Natural assistant interaction |
US10909331B2 (en) | 2018-03-30 | 2021-02-02 | Apple Inc. | Implicit identification of translation payload with neural machine translation |
US11145294B2 (en) | 2018-05-07 | 2021-10-12 | Apple Inc. | Intelligent automated assistant for delivering content from user experiences |
US10928918B2 (en) | 2018-05-07 | 2021-02-23 | Apple Inc. | Raise to speak |
US10984780B2 (en) | 2018-05-21 | 2021-04-20 | Apple Inc. | Global semantic word embeddings using bi-directional recurrent neural networks |
DK201870355A1 (en) | 2018-06-01 | 2019-12-16 | Apple Inc. | Virtual assistant operation in multi-device environments |
DK179822B1 (en) | 2018-06-01 | 2019-07-12 | Apple Inc. | Voice interaction at a primary device to access call functionality of a companion device |
US11386266B2 (en) | 2018-06-01 | 2022-07-12 | Apple Inc. | Text correction |
DK180639B1 (en) | 2018-06-01 | 2021-11-04 | Apple Inc | DISABILITY OF ATTENTION-ATTENTIVE VIRTUAL ASSISTANT |
US10892996B2 (en) | 2018-06-01 | 2021-01-12 | Apple Inc. | Variable latency device coordination |
US11076039B2 (en) | 2018-06-03 | 2021-07-27 | Apple Inc. | Accelerated task performance |
US11010561B2 (en) | 2018-09-27 | 2021-05-18 | Apple Inc. | Sentiment prediction from textual data |
US11170166B2 (en) | 2018-09-28 | 2021-11-09 | Apple Inc. | Neural typographical error modeling via generative adversarial networks |
US10839159B2 (en) | 2018-09-28 | 2020-11-17 | Apple Inc. | Named entity normalization in a spoken dialog system |
US11462215B2 (en) | 2018-09-28 | 2022-10-04 | Apple Inc. | Multi-modal inputs for voice commands |
US11475898B2 (en) | 2018-10-26 | 2022-10-18 | Apple Inc. | Low-latency multi-speaker speech recognition |
US11638059B2 (en) | 2019-01-04 | 2023-04-25 | Apple Inc. | Content playback on multiple devices |
US11348573B2 (en) | 2019-03-18 | 2022-05-31 | Apple Inc. | Multimodality in digital assistant systems |
US11423908B2 (en) | 2019-05-06 | 2022-08-23 | Apple Inc. | Interpreting spoken requests |
US11475884B2 (en) | 2019-05-06 | 2022-10-18 | Apple Inc. | Reducing digital assistant latency when a language is incorrectly determined |
US11307752B2 (en) | 2019-05-06 | 2022-04-19 | Apple Inc. | User configurable task triggers |
DK201970509A1 (en) | 2019-05-06 | 2021-01-15 | Apple Inc | Spoken notifications |
US11140099B2 (en) | 2019-05-21 | 2021-10-05 | Apple Inc. | Providing message response suggestions |
US11496600B2 (en) | 2019-05-31 | 2022-11-08 | Apple Inc. | Remote execution of machine-learned models |
US11289073B2 (en) | 2019-05-31 | 2022-03-29 | Apple Inc. | Device text to speech |
DK180129B1 (en) | 2019-05-31 | 2020-06-02 | Apple Inc. | User activity shortcut suggestions |
US11360641B2 (en) | 2019-06-01 | 2022-06-14 | Apple Inc. | Increasing the relevance of new available information |
WO2021056255A1 (en) | 2019-09-25 | 2021-04-01 | Apple Inc. | Text detection using global geometry estimators |
CN117193697A (en) * | 2022-05-30 | 2023-12-08 | 华为技术有限公司 | Audio playing method and device and electronic equipment |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6647502B1 (en) * | 1999-07-13 | 2003-11-11 | Sony Corporation | Method and apparatus for providing power based on the amount of data stored in buffers |
US6618791B1 (en) * | 2000-09-29 | 2003-09-09 | Intel Corporation | System and method for controlling power states of a memory device via detection of a chip select signal |
US6968468B2 (en) * | 2002-02-25 | 2005-11-22 | O2 Micro, Inc. | Digital computer utilizing buffer to store and output data to play real time applications enabling processor to enter deep sleep state while buffer outputs data |
US7010656B2 (en) * | 2003-01-28 | 2006-03-07 | Intel Corporation | Method and apparatus for memory management |
US20050165501A1 (en) * | 2004-01-23 | 2005-07-28 | Lian Yam F. | Apparatus and method for the use of memory devices for audio |
US7183825B2 (en) * | 2004-04-06 | 2007-02-27 | Freescale Semiconductor, Inc. | State retention within a data processing system |
US7865021B2 (en) * | 2004-12-06 | 2011-01-04 | Nec Electronics Corporation | Compressed stream decoding apparatus and method |
US7437502B1 (en) * | 2005-04-20 | 2008-10-14 | Western Digital Technologies, Inc. | Disk drive adjusting operating mode based on historical proximity of host commands |
JP2007095040A (en) * | 2005-08-31 | 2007-04-12 | Matsushita Electric Ind Co Ltd | Data processing apparatus, program, recording medium, and content playback apparatus |
US8300701B2 (en) * | 2005-12-09 | 2012-10-30 | Avid Technology, Inc. | Offspeed playback in a video editing system of video data compressed using long groups of pictures |
US7620833B2 (en) * | 2006-12-04 | 2009-11-17 | Intel Corporation | Power saving for isochronous data streams in a computer system |
-
2007
- 2007-06-28 US US11/770,446 patent/US9632561B2/en active Active
-
2017
- 2017-04-24 US US15/495,229 patent/US20170269673A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US9632561B2 (en) | 2017-04-25 |
US20090003115A1 (en) | 2009-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20170269673A1 (en) | Power-gating media decoders to reduce power consumption | |
US9794605B2 (en) | Using time-stamped event entries to facilitate synchronizing data streams | |
JP4611210B2 (en) | Non-main CPU / OS based operating environment | |
US8949644B2 (en) | HSIC communication system and method | |
US20080229050A1 (en) | Dynamic page on demand buffer size for power savings | |
US9448609B2 (en) | Multimedia processing system and method of operating the same | |
KR20120032888A (en) | Method and apparatus for reducing power consumption of mobile device | |
CN102084317A (en) | Mobile phone with low-power media rendering sub-system | |
JP2007193810A (en) | Interleaving policies for flash memory | |
JP2013242896A (en) | Power efficient batch-frame audio decoding apparatus, system, and method | |
US20180225066A1 (en) | Forced Idling of Memory Subsystems | |
JP6276470B2 (en) | System and method for reducing standby power of volatile memory in portable computing devices | |
US6904533B2 (en) | Apparatus for delivering the power status data of a smart battery | |
EP1860555A2 (en) | Media subsystem, method and computer program product for adaptive media buffering | |
US20160216751A1 (en) | Audio processing system | |
US20110099404A1 (en) | Electronic device, method of controlling an electronic device, and system-on-chip | |
TWI467361B (en) | Mobile device chip and mobile device controlling method therefor | |
KR101521780B1 (en) | Continuous data delivery with energy conservation | |
JP2014505929A (en) | Power optimization for special media playback scenarios | |
US20090110051A1 (en) | Method and system for reducing the impact of latency on video processing | |
KR101804799B1 (en) | Apparatus and method and reproducing audio data by low power | |
US8090970B2 (en) | Apparatus and method for playing multimedia data | |
US20140245044A1 (en) | Method for hibernation control based on usage pattern | |
US20140245042A1 (en) | Method for hibernation control based on battery capacity |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |