JP6258506B2 - Apparatus and method for obtaining configuration data - Google Patents

Description

Priority claim
[0001] This application is a US Provisional Patent Application No. 61/873 entitled “APPARATUS AND METHOD FOR ACQUIRING ACTIVE NOISE CANCELLATION DATA” filed on Sep. 4, 2013, each of which is incorporated by reference in its entirety. , 460, and US Non-Provisional Patent Application No. 14 / 137,075 entitled “APPARATUS AND METHOD FOR ACQUIRING CONFIGURATION DATA” filed on December 20, 2013.

  [0002] This disclosure relates generally to obtaining configuration data.

  [0003] Advances in technology have resulted in smaller and more powerful computing devices. For example, there are currently a variety of portable personal computing devices, including wireless computing devices such as portable wireless phones, personal digital assistants (PDAs), and paging devices that are small, lightweight, and easily carried by users To do. More specifically, portable wireless phones, such as cellular phones and Internet Protocol (IP) phones, can communicate voice and data packets over a wireless network. In addition, many such wireless telephones include other types of devices incorporated therein. For example, a wireless telephone can also include a digital still camera, a digital video camera, a digital recorder, and an audio file player. Such a wireless phone can also process executable instructions, including software applications, such as web browser applications, that can be used to access the Internet. Thus, these wireless phones can include significant computing power.

  [0004] A wireless phone may be used with a headset, which allows two-way communication. Different headset models may have different characteristics (eg, acoustic characteristics, pin configuration, programmable control keys, etc.) that may not be easily identifiable for a wireless phone. Failure to identify these characteristics can degrade headset performance. As a non-limiting example, background noise detected in a particular headset can disrupt communication. To reduce the effects of background noise, the wireless phone or certain headsets may perform active noise cancellation (ANC). For example, a particular headset may capture background noise through a microphone and provide a background noise waveform (eg, a noise signal) to a wireless telephone or a particular headset processor. The processor may then generate an inverse waveform of background noise (eg, an anti-noise signal) and provide the inverse waveform as an output to reduce (or eliminate) background noise.

  [0005] Since headsets that do not perform ANC do not require a processor, performing ANC using the processor of a particular headset may require additional circuitry, reducing the complexity for a particular headset. It can increase. While wireless telephones may have signal processing capabilities, ANC uses headset characteristics to generate inverse waveforms. Thus, the wireless telephone may not have access to the information needed to perform ANC. In other scenarios, the wireless phone performs other functions associated with a particular headset (e.g., adjusting input sound gain, adjusting audio output to improve frequency response, altered pin assignments) (E.g., perform functions related to programmable keys, execute functions related to programmable keys, execute applications, etc.).

  [0006] This disclosure is an embodiment of an accessory device that includes a memory (eg, a non-volatile memory such as an electrically erasable programmable read-only memory (EEPROM)) and an interface (eg, a single wire low power bus). Present. When the accessory device is connected to the master device, the master device may retrieve data stored in memory via the interface and operate the accessory device according to the data. Data includes data related to accessory device speaker parameters, data related to accessory device microphone parameters, data related to applications that fit the accessory device, data related to accessory device programmable control keys, audio settings of the accessory device , Data related to accessory device pin assignments, accessory device active noise cancellation (ANC) coefficients, or any combination thereof.

  [0007] As a non-limiting example, a master device (eg, a mobile phone) can be coupled to an accessory device to provide audio output to the accessory device (eg, a headset). The accessory device may include an ANC circuit (eg, one or more ANC microphones and corresponding ANC microphone lines). The accessory device may also include ANC data (eg, ANC coefficients) that characterize the acoustic characteristics of the accessory device. The port of the master device is activated and can be used to couple the ANC circuit of the accessory device to the processor in the master device. The accessory device may send identification data to the processor (eg, via a microphone line). If the processor determines that the ANC coefficients for the accessory device (e.g., optimized data to reduce the amount of noise in the headset) are not stored in the master device, the processor may retrieve the ANC from non-volatile memory in the accessory device. Coefficients can be downloaded. Alternatively, the processor may download ANC coefficients from a remote server over a network connection. After obtaining the ANC coefficients, the master device may switch the port from a data communication mode (eg, two-way communication) to an audio input mode (eg, one-way communication). The master device may use the ANC coefficients to generate an inverse waveform (eg, an anti-noise signal) to provide to the accessory device.

  [0008] In certain embodiments, the accessory device includes a memory configured to store data and an interface configured to communicate data from the memory to the master device. The accessory device receives power from the master device.

  [0009] In another specific embodiment, an accessory device includes a headset with a speaker configured to receive audio content from a mobile device. The accessory device also includes a memory configured to store data related to speaker parameters. The accessory device further includes a plug adapted to be coupled to the connector of the mobile device. The accessory device also includes an interface configured to communicate data from the memory to the mobile device via a plug.

  [0010] In another specific embodiment, the accessory device includes a memory configured to store data associated with the application. The accessory device also includes a plug that is adapted to be coupled to the connector of the mobile device. The accessory device also includes an interface configured to communicate data from the memory to the mobile device via a plug.

  [0011] In another specific embodiment, the accessory device includes a headset and a memory. The headset includes at least one button and a speaker configured to receive first audio content from the mobile device. The memory is configured to store data associated with at least one function of at least one button. The accessory device also includes a plug that is adapted to be coupled to the connector of the mobile device. The accessory device further includes an interface configured to communicate data from the memory to the mobile device via the plug.

  [0012] In another specific embodiment, the accessory device includes a headset and a memory. The headset includes a speaker configured to receive audio content from the mobile device. The memory is configured to store data related to the audio settings. The accessory device also includes a plug that is adapted to be coupled to the connector of the mobile device. The accessory device further includes an interface configured to communicate data from the memory to the mobile device via the plug.

  [0013] In another specific embodiment, the accessory device includes a plug adapted to be coupled to the connector of the mobile device. The connector includes pins configured to electrically connect to a plurality of conductive terminals arranged in series along the length of the plug. The accessory device also includes a memory configured to store data related to the functional assignment of the pins in the connector. The accessory device further includes an interface configured to communicate data from the memory to the mobile device via the plug.

  [0014] In another specific embodiment, an apparatus includes a memory that stores instructions executable by a processor to perform operations. The operation includes receiving data from the memory of the accessory device. Data includes accessory device identification information, part parameters in the accessory device, application-related data, data that identifies the function of the button on the accessory device, audio settings, pin function of the connector, or any combination thereof including. Actions include processing data, generating and / or processing audio content based on parameters, running an application, activating button functionality, generating audio content according to audio settings, pins Further comprising activating the function or any combination thereof.

  [0015] In another specific embodiment, the method includes receiving data from the memory of the accessory device. Data includes accessory device identification information, part parameters in the accessory device, application-related data, data that identifies the function of the button on the accessory device, audio settings, pin function of the connector, or any combination thereof including. The method also includes processing the data and performing at least one operation. At least one action is to generate and / or process audio content based on parameters, run an application, activate button functionality, generate audio content according to audio settings, and pin functionality. Including activating, or any combination thereof.

  [0016] In another specific embodiment, the computer-readable storage device includes instructions that, when executed by the processor, cause the processor to receive data from the memory of the accessory device. Data includes accessory device identification information, part parameters in the accessory device, application-related data, data that identifies the function of the button on the accessory device, audio settings, pin function of the connector, or any combination thereof including. The instructions are also executable to cause the processor to process the data and perform at least one operation. At least one action is to generate and / or process audio content based on parameters, run an application, activate button functionality, generate audio content according to audio settings, and pin functionality. Including activating, or any combination thereof.

  [0017] In another specific embodiment, the apparatus includes means for receiving data from the memory of the accessory device. Data includes accessory device identification information, part parameters in the accessory device, application-related data, data that identifies the function of the button on the accessory device, audio settings, pin function of the connector, or any combination thereof including. The apparatus also includes means for processing the data and performing at least one operation. At least one action is to generate and / or process audio content based on parameters, run an application, activate button functionality, generate audio content according to audio settings, and pin functionality. Including activating, or any combination thereof.

  [0018] In another specific embodiment, the method includes detecting an accessory device at the master device. The accessory device can receive power from the master device. The method also includes identifying the accessory device based on information received from the accessory device and searching for configuration data associated with the accessory device based on the identification of the accessory device. The method further includes obtaining configuration data. Configuration data includes data related to accessory device speaker parameters, data related to accessory device microphone parameters, data related to applications compatible with accessory devices, data related to accessory device programmable control keys, audio of accessory devices Data related to settings, active device active noise cancellation (ANC) coefficients, data related to accessory device pin assignment, or any combination thereof may be included.

  [0019] In another specific embodiment, the apparatus includes a processor in the master device. The apparatus also includes a memory that stores instructions executable by the processor to perform the operations. The operations include detecting an accessory device that receives power from the master device and identifying the accessory device based on information received from the accessory device. The operation also includes searching for configuration data associated with the accessory device and obtaining the configuration data based on the identification of the accessory device. Configuration data includes data related to accessory device speaker parameters, data related to accessory device microphone parameters, data related to applications compatible with accessory devices, data related to accessory device programmable control keys, audio of accessory devices Data related to settings, active device active noise cancellation (ANC) coefficients, data related to accessory device pin assignment, or any combination thereof may be included.

  [0020] In another specific embodiment, the computer-readable storage device, when executed by a processor in the master device, detects and receives from the accessory device an accessory device that receives power from the master device. Instructions for causing the accessory device to be identified based on the recorded information. The computer-readable storage device also has instructions that, when executed by the processor, cause the processor to search for configuration data associated with the accessory device and obtain configuration data based on the identification of the accessory device. including. Configuration data includes data related to accessory device speaker parameters, data related to accessory device microphone parameters, data related to applications compatible with accessory devices, data related to accessory device programmable control keys, audio of accessory devices Data related to settings, active device active noise cancellation (ANC) coefficients, data related to accessory device pin assignment, or any combination thereof may be included.

  [0021] In another specific embodiment, the apparatus includes means for obtaining configuration data. Obtaining configuration data may include detecting an accessory device at the master device. The accessory device receives power from the master device. Obtaining configuration data may also include identifying an accessory device based on information received from the accessory device and searching for configuration data associated with the accessory device based on the identification of the accessory device. . The apparatus further includes means for storing configuration data. Configuration data includes data related to accessory device speaker parameters, data related to accessory device microphone parameters, data related to applications compatible with accessory devices, data related to accessory device programmable control keys, audio of accessory devices Data related to settings, active device active noise cancellation (ANC) coefficients, data related to accessory device pin assignment, or any combination thereof may be included.

  [0022] One particular advantage provided by at least one of the disclosed embodiments is from a particular headset model and / or to allow a mobile phone to fit a wide range of headset models. Or the ability of a mobile phone to obtain (eg, download) ANC coefficients (or other configuration data) from a remote source (eg, a server). As a result, the processor in the mobile phone can generate an appropriate waveform (eg, an anti-noise signal) based on the ANC coefficients to reduce (or eliminate) background noise that might otherwise be present in a particular headset model. Can be generated. Other aspects, advantages, and features of the present disclosure will become apparent after review of the entire application, including the following sections, including a brief description of the drawings, a mode for carrying out the invention, and the claims. Become.

[0023] FIG. 7 is a diagram of a particular exemplary embodiment of a system operable to allow acquisition of a master device of configuration data from an accessory device. [0024] FIG. 2 is a diagram of a particular embodiment of a master device and accessory device of the system of FIG. [0025] FIG. 4 is a diagram of another particular embodiment of a master device and accessory device of the system of FIG. [0026] A flowchart of a particular embodiment of a method for obtaining configuration data. [0027] A flowchart of a particular embodiment of a method for obtaining active noise cancellation data. [0028] FIG. 9 is a flowchart of another specific embodiment of a method for obtaining active noise cancellation data. [0029] FIG. 7 is a block diagram of a wireless device that includes components operable for configuration data.

  [0030] Referring to FIG. 1, a particular exemplary embodiment of a system 100 that is operable to allow acquisition of a master device of configuration data from an accessory device is shown. For example, the system 100 can include a master device 102 that is coupled to the accessory device 104 via a wired connection. In certain embodiments, the master device 102 can be a mobile phone and the accessory device 104 can be a headset. The wired connection can include a microphone line 120. Microphone line 120 may be a high impedance communication line between master device 102 and accessory device 104. System 100 may also include a server 108 that is communicatively coupled to master device 102 via network 106.

  [0031] The master device 102 may be configured to detect the accessory device 104 when the accessory device 104 is coupled to the master device 102. For example, master device 102 may include a port adapted to receive a plug for coupling accessory device 104 to master device 102. In response to detecting accessory device 104, master device 102 may activate a single-wire two-way communication mode. In the single-wire two-way communication mode, the microphone line 120 can be used to allow two-way communication between the master device 102 and the accessory device 104. The master device 102 sends a first pulse (eg, a low pulse or reset signal) to the accessory device 104 via the microphone line 120 to determine whether the accessory device 104 is compatible with the single-wire two-way communication mode. Can be sent. The master device 102 may wait for a response (eg, a second signal or low pulse) from the accessory device 104 for a certain period of time. For example, master device 102 may wait 3 milliseconds to receive a response from accessory device 104. If the master device 102 cannot receive a response from the accessory device 104 within a particular time period, the master device 102 may determine that the accessory device 104 does not conform to the single wire two-way communication mode.

  [0032] However, if the master device 102 receives a response from the accessory device 104 within a particular time period, the master device 102 may determine that the accessory device 104 is compatible with a single-wire two-way communication mode. As a result, data communication can be established between the accessory device 104 and the master device 102 via the microphone line 120.

  [0033] Master device 102 may also be configured to identify accessory device 104. For example, accessory device 104 may send identification data to master device 102 via microphone line 120. In certain embodiments, the identification data may include a headset identifier packet (eg, a 64-bit word). For example, a headset identifier packet may include an 8-bit cyclic redundancy check (CRC) code for security during transmission and a 48-bit serial number (eg, headset model number) that is unique to the accessory device 104 model. And an 8-bit family code corresponding to other applications of the accessory device 104 (eg, whether the accessory device 104 is an active noise cancellation (ANC) headset, etc.). Master device 102 may receive identification data from accessory device 104 via microphone line 120. The accessory device 104 can be identified by the master device 102 using the identification data. After the master device 102 identifies the accessory device 104, the master device 102 can determine whether configuration data 110, 112 associated with the accessory device 104 is stored in the memory of the master device 102.

  [0034] If the configuration data 110, 112 is stored in the memory of the master device 102, the single wire bi-directional communication mode may be deactivated and the configuration data 110, 112 is loaded from the memory to the processor (eg, retrieved). )obtain. However, if configuration data 110, 112 is not stored in the memory of master device 102, master device 102 may search for configuration data 110, 112 and configure from other sources (eg, server 108 and / or accessory device 104). Attempts to obtain data 110, 112 may be made.

  [0035] In a particular embodiment corresponding to the scenario where the accessory device 104 is an ANC headset, the configuration data 110, 112 may include ANC coefficients that characterize the acoustic characteristics of the accessory device 104. Master device 102 generates an anti-noise signal (eg, a signal having an inverse waveform of background noise detected at accessory device 104) to reduce or eliminate background noise, and a modified audio signal (eg, normal ANC coefficients may be used to provide the accessory device 104 with an anti-noise signal combined with the audio signal. An algorithm (eg, an ANC algorithm) may be used by the master device 102 to determine the characteristics of the anti-noise signal. The ANC coefficients can be used by the algorithm to adjust the characteristics of the anti-noise signal to be unique to the accessory device 104. For example, accessory device 104 may include a speaker configured to receive audio content from master device 102. The master device 102 may change the audio content (using the ANC algorithm) based on the ANC coefficients and send the changed audio content to the accessory device 104 to reduce the amount of noise at the speaker.

  [0036] In another specific embodiment, configuration data 110, 112 may include data related to speaker parameters. For example, the configuration data 110, 112 may include the frequency response of the speaker of the accessory device 104, the sound pressure level (SPL) of the speaker, the sealing type of the speaker, the model of the speaker (eg, Thiel or small), or Any combination of can be identified. Master device 102 may adjust the audio provided to accessory device 104 based on speaker parameters to improve the frequency response at accessory device 104. In another particular embodiment, configuration data 110, 112 may include data related to microphone parameters (eg, microphone gain offset information). For example, the configuration data 110, 112 may identify the microphone location of the accessory device 104 and / or a particular microphone component of the accessory device 104, both of which are the sound signals captured by the accessory device 104 (the microphone). It can affect the signal-to-noise ratio (SNR). Master device 102 may adjust processing techniques based on microphone parameters to improve the gain of the sound signal received from accessory device 104.

  [0037] In another particular embodiment, configuration data 110, 112 may include data associated with an application that is compatible with accessory device 104. For example, the configuration data 110, 112 may identify that the accessory device 104 is compatible with sound applications, surround sound, non-audio features, other applications, or any combination thereof. In certain embodiments, configuration data 110, 112 may be used by accessory device 104 for online payment and / or financial applications (eg, applications associated with www.paypal.com, www.intuit.com, www.square.com, etc.). Can be identified. Data associated with the application may allow the master device 102 to execute the application (eg, perform functions related to them). In another particular embodiment, configuration data 110, 112 may include data related to accessory control 104 programmable control keys (eg, buttons / keys). For example, the configuration data 110, 112 may include an accessory device that is a play button, pause button, fast forward button, rewind button, buttons used for games, voice call buttons, other buttons, or any combination thereof. Can be identified. Data associated with a particular button may allow master device 102 and / or accessory device 104 to perform a function associated with the programmable control key in response to activation of the programmable control key.

  [0038] In another particular embodiment, configuration data 110, 112 may include data related to audio settings (eg, bass, treble, equalizer, etc.) of accessory device 104. In another particular embodiment, configuration data 110, 112 may include data related to accessory device 104 pin assignments. For example, different accessory devices may have different pin assignments that allow functions that may not be available with conventional connectors (eg, 3.5 mm connectors). As a non-limiting example, specific pin assignments may allow for high-speed digital communications, higher voltages for charging accessory devices, and / or non-audio functions to be performed. Data related to pin assignments may enable the master device 102 to perform functions related to the changed pin assignments.

  [0039] In certain embodiments, master device 102 may establish a network connection with a remote source and request configuration data 112 over the network connection. For example, master device 102 may establish a connection with server 108 via network 106. Server 108 may include a database that stores configuration data 112 and identification information (eg, an identifier of accessory device 104). For example, a manufacturer of the accessory device 104 may upload the configuration data 112 of the accessory device 104 on a website that is accessible to the master device 102 via the network 106. Along with the request for configuration data 112, master device 102 may send identification information associated with accessory device 104 to server 108. The identification information may be based on identification data received from the accessory device 104. After receiving the request and the identification information, the server 108 may send configuration data 112 (related to the identification information) to the master device 102 over the network 106. Upon receiving the configuration data 112 from the server 108, the master device 102 performs functions (eg, generates an anti-noise signal, changes the pin configuration, improves the gain of the received sound signal, etc.) Configuration data 112 may be loaded into the processor.

  [0040] In another specific embodiment, master device 102 may request configuration data 110 from accessory device 104 via microphone line 120. As described with respect to FIG. 2, accessory device 104 may include a memory (eg, an electrically erasable programmable read only memory (EEPROM)) that stores configuration data 110. For example, the accessory device 104 manufacturer may store the configuration data 110 in the memory of the accessory device 104 during or after manufacture. The memory (and accessory device 104) may receive power from the master device 102 via the microphone line 120. In response to receiving a request for configuration data 110, accessory device 104 may send configuration data 110 to master device 102 via microphone line 120. Upon receiving configuration data 110 from the memory of the accessory device 104, the master device 102 may load the configuration data 110 into the processor to perform the function.

  [0041] After master device 102 receives configuration data 110, 112 from accessory device 104 and / or server 108, the single-wire two-way communication mode may be deactivated. For example, the digital port in the master device 102 may be set to a high impedance level, and the microphone line 120 is released (eg, disconnected from the memory of the accessory device 104) and is only in one direction (eg, to the master device 102). ) Can be used to transmit audio signals. For example, the main microphone (shown in FIG. 3) of accessory device 104 may be used to transmit audio (eg, voice and / or background noise) to master device 102.

  [0042] Obtaining configuration data 110, 112 from accessory device 104 and / or server 108 allows master device 102 to adjust processor capabilities at master device 102 based on configuration data specific to a particular accessory device. May allow adaptation to a wide range of accessory devices (eg, a wide range of headset models). As a non-limiting example, each accessory device may store the appropriate ANC coefficients in the accessory device's memory and transfer the ANC coefficients to the master device 102 when the accessory device is first connected to the master device 102. After the ANC coefficients are transferred to the master device 102, the ANC coefficients can be stored in the memory of the master device 102. As a result, the ANC coefficient may be used (eg, retrieved from memory) the next time a particular accessory device is connected to the master device 102. Thus, obtaining configuration data 110 from accessory device 104 may increase the likelihood that configuration data 110 matches the headset model and reduce the likelihood that inappropriate data will be used by master device 102. Further, seamlessly transferring configuration data 110, 112 from accessory device 104 or server 108, respectively, may eliminate manual setup processes by the user of master device 102.

  [0043] Referring to FIG. 2, a particular exemplary embodiment of the master device 102 and accessory device 104 of FIG. 1 is shown. Master device 102 may include an application processor 230, an audio encoder / decoder (codec) 232, and a single wire interface 234. In certain embodiments, a single wire interface 234 may be included in the application processor 230. Accessory device 104 may include a memory 240. In certain embodiments, accessory device 104 may include a main microphone 250. In another particular embodiment, accessory device 104 may include two speakers and two ANC microphones (as described with respect to FIG. 3) without a main microphone.

  [0044] The application processor 230 may be configured to detect the accessory device 104 when the accessory device 104 is coupled to the master device 102. For example, a signal may be sent to application processor 230 indicating that a device (eg, accessory device 104) has been connected to a port of master device 102. Application processor 230 may be configured to detect device capabilities when the device is plugged into master device 102. As a non-limiting example, when a device plug is coupled to the port of the master device 102, the plug configuration corresponds to a headset that does not have a microphone or that includes a standard microphone. Or can be used by the master device 102 to detect whether it corresponds to an ANC headset that includes a standard microphone and an ANC microphone.

  [0045] The application processor 230 may activate the single-wire two-way communication mode using the single-wire interface 234 and determine whether the accessory device 104 is compatible with the single-wire two-way communication mode. A first pulse (eg, a low pulse or reset signal) may be transmitted via 120 to the accessory device 104. Application processor 230 may wait for a response from accessory device 104 for a specified period of time.

  [0046] If the application processor 230 is unable to receive a response from the accessory device 104 within a particular time period, the application processor 230 may determine that the accessory device 104 does not conform to the single-wire two-way communication mode. If the application processor 230 receives a response from the accessory device 104 within a particular time period, the application processor 230 may determine that the accessory device 104 is compatible with a single wire two-way communication mode. As a result, data communication can be established between the application processor 230 and the function control and data bus 242 via the microphone line 120.

  [0047] In certain embodiments, the memory 240 of the accessory device 104 may be an electrically erasable programmable read only memory (EEPROM). The memory 240 may include or be coupled to a function control and data bus 242 and a parasitic power unit 244. Parasitic power unit 244 may include a diode and a capacitor configured to power memory 240 in response to receiving a voltage signal from a communication bus (eg, microphone line 120). In certain embodiments, the memory 240 derives all of its operating power from the master device (eg, via the microphone line 120). The function control and data bus 242 may be configured to provide a response (eg, a low pulse) to the application processor 230 via the microphone line 120 in response to receiving the transmit pulse.

  [0048] The function control and data bus 242 may transmit identification data to the master device 102 via the microphone line 120. Application processor 230 may receive identification data from function control and data bus 242 at single wire interface 234. The accessory device 104 can be identified by the master device 102 using the identification data.

  [0049] After the application processor 230 identifies the accessory device 104, the application processor 230 determines whether configuration data for the accessory device 104 (eg, corresponding to the identification data) is stored in the memory 255 of the master device 102. Can be determined. When configuration data for accessory device 104 is not stored in memory 255 of master device 102, application processor 230 may request that configuration data 110 be sent from memory 240 of accessory device 104 via microphone line 120. In response to receiving a request for configuration data 110, function control and data bus 242 may send configuration data 110 to application processor 230 via microphone line 120.

  [0050] After receiving the configuration data 110 from the accessory device 104 or accessing the configuration data from the memory 255, the application processor 230 sets the single wire interface 234 to a high impedance level and releases the microphone line 120 ( For example, by separating the microphone line 120 from the memory 240 and the application processor 230, the single wire two-way communication mode may be deactivated. Deactivating the single wire bi-directional communication mode allows the microphone line 120 to transmit an audio signal to the master device 102. For example, audio detected at the main microphone 250 can be transmitted to the audio codec 232 via the microphone line 120.

  [0051] The application processor 230, or another processor (not shown) of the master device 102, may use the configuration data 110 to perform processing functions. For example, in a scenario where configuration data 110 corresponds to ANC coefficients, master device 102 may use configuration data 110 to generate an anti-noise signal. The anti-noise signal may be combined with the audio signal to generate a modified audio signal, and the modified audio signal may be provided to the audio codec 232 to reduce or eliminate background noise at the accessory device 104. For example, the audio codec 232 may be configured to output a modified audio signal (eg, a sound signal to be projected through the speaker of the accessory device 104). The modified audio signal may be sent to the accessory device 104 via the left speaker line (shown in FIG. 3), the right speaker line (shown in FIG. 3), or any combination thereof. Thus, the application processor 230, or another processor, may generate an anti-noise signal based on the ANC coefficients using the ANC algorithm, and the application processor 230, or another processor, may detect the noise detected at the accessory device 104. An anti-noise signal may be combined with the audio signal to produce a reduced, modified audio signal. Accordingly, the master device 102 may modify the audio signal based on the ANC coefficients and send the modified audio signal to a speaker (not shown) in the accessory device 104.

  [0052] In a scenario where the configuration data 110 corresponds to speaker parameters, the master device 102 adjusts the audio provided to the accessory device 104 based on the speaker parameters to improve the frequency response at the accessory device. Configuration data 110 may be used. In scenarios where the configuration data 110 corresponds to microphone parameters (eg, microphone gain offset information), the master device 102 may use processing techniques to improve the gain of the sound signal received from the accessory device 104.

  [0053] Obtaining the configuration data 110 from the memory 240 can be achieved by the master device 102 adjusting the processor functionality based on the configuration data 110 specific to a particular accessory device 104, thereby providing a wide range of accessory devices 104 (eg, A wide range of headset models). Thus, obtaining configuration data 110 from accessory device 104 may increase the likelihood that configuration data 110 matches the headset model of accessory device 104 and may cause inappropriate data (eg, to accessory device 104 by accessory device 104). Unrelated configuration data) may be less likely to be used.

[0054] Referring to FIG. 3, a particular exemplary embodiment of the master device 102 and accessory device 104 of FIG. 1 is shown. Master device 102 may include an application processor 230, an audio codec 232, a port 380, and a single wire interface 234. The accessory device 104 includes a main microphone 250, a memory 240, a plug 350, a left speaker 320 (eg, left earpiece), a right speaker 322 (eg, right earpiece), a left ANC microphone 360, and a right ANC microphone 370. Can be included. Single-wire interface 234 may be configured to switch port 380 between operation in single-wire two-way communication mode and operation in single-wire one-way communication mode. In the single-wire two-way communication mode, the single-wire interface 234 uses an inter integrated circuit (I ² C) protocol to communicate data from the master device 102 to the accessory device 104 and from the accessory device 104 to the master device 102. obtain. In the single wire one-way communication mode, the single wire interface 234 may communicate audio from the accessory device 104 to the master device 102.

  [0055] The plug 350 may be configured to be inserted into the port 380 of the master device 102. Master device 102 may detect accessory device 104 in response to plug 350 being inserted into port 380. Plug 350 may include a pin that contacts a corresponding pin of port 380 coupled to audio codec 232. For example, the plug 380 may include a “left” pin that couples the left speaker 320 to a left output of an audio codec 232 that is configured to output audio intended to be projected by the left speaker 320. Plug 380 may include a “right” pin that couples right speaker 322 to the right output of audio codec 232 configured to output audio intended to be projected by right speaker 322. Plug 380 may include a “microphone” pin configured to couple main microphone 250 to the input of audio codec 232 via microphone line 120. Microphone line 120 may also be used for two-way communication between master device 102 and accessory device 104. For example, configuration data 110 (eg, ANC coefficients) may be transferred from memory 240 to application processor 230 using the “microphone” pin and microphone line 120.

  [0056] Plug 380 may also include a “left ANC microphone” pin that couples left ANC microphone 360 to the input of audio codec 232. The left ANC microphone 360 may be configured to detect audio (eg, background noise) near the left speaker 320 and provide the detected audio to the master device 102 via the first ANC microphone line 390. Plug 380 may also include a “right ANC microphone” pin that couples right ANC microphone 370 to the input of audio codec 232. The right ANC microphone 370 may be configured to detect audio (eg, background noise) near the right speaker 322 and provide the detected audio to the master device 102 via the second ANC microphone line 395. The background noise detected at the ANC microphones 360, 370 is provided to the audio codec 232 and can be used to generate an anti-noise signal. For example, background noise detected at ANC microphones 360, 370 may correspond to a noise signal. Application processor 230, or another processor, generates an inverse waveform of the noise signal (eg, an anti-noise signal) to reduce (or cancel) the noise detected by ANC microphones 360, 370, speaker line 392, An inverse waveform may be applied to the speakers 320 and 322 via 397, respectively.

  [0057] The memory 240 may include a parasitic power unit 244, a single wire function controller 302, a memory controller 304, a data memory 306, identification data 308, and a scratch pad 310. As described with respect to FIG. 2, the microphone line 120 may be coupled to the parasitic power unit 244 to provide power to the memory 240. For example, the voltage signal may be transferred from the master device 102 to the parasitic power unit 244 via the microphone line 120.

  [0058] The single wire function controller 302 may be configured to receive data from the master device 102 via the microphone line 120 and convert the data into a format (eg, language) that is compatible with the memory 240. The single wire function controller 302 also adjusts the voltage level of the signal received from the master device 102 after configuration (eg, after the master device 102 has received the configuration data 110 from the memory 240), and from the memory 240 to the master device 102. Can be configured to control the timing of signals communicated with the master device 102 and to release (eg, isolate) the microphone line 120 from the memory 240.

  [0059] The identification data 308 may include a headset registration number (eg, a 64-bit word). For example, the identification data 308 may include an 8-bit CRC code, a 48-bit serial number (eg, a headset model number) that is unique to the accessory device 104 model, and an 8-bit family code. The identification data 308 may be sent to the master device 102 on demand via the single wire function controller 302 and the microphone line 120.

  [0060] The memory controller 304 may be configured to initiate transmission of data (eg, identification data 308, configuration data 110, and / or other data stored in the memory 240) to the master device 102. For example, configuration data 110 may be stored at a particular location in data memory 306. In certain embodiments, the data memory 306 may include 80 32-byte pages. Memory controller 304 may fetch configuration data 110 from a particular location in data memory 306 and initialize the transfer of configuration data 110 from memory 240 to master device 102. Memory controller 304 may utilize scratch pad 310 to write to data memory 306. In certain embodiments, the scratch pad 310 may include a 32-byte scratch pad that is used by the memory controller 304 to write data to each page of the data memory 306.

  [0061] During an ANC operation, the master device 102 and accessory device 104 may be used to make a voice call, listen to music, and / or for other applications. For example, an audio signal (eg, an audio signal from a voice call, a music file, etc.) may be projected through the speakers 320, 322 of the accessory device 104. During a voice call, main microphone 250 may receive voice input, and ANC microphones 360, 370 may receive noise (eg, environmental noise and / or background noise) along with some of the voice inputs. A noise signal corresponding to the noise may be provided to plug 350 via ANC microphone lines 390, 395 and may be sent to application processor 230 (or another processor) via port 380 and audio codec 232. Application processor 230 (or another processor) may generate an anti-noise signal (eg, a signal having an inverse waveform of the noise signal) and mix the anti-noise signal with the output audio to generate a modified audio signal. obtain. The modified audio signal may be provided to speakers 320, 322 via speaker lines 392, 397 to reduce (or eliminate) the effects of noise in accessory device 104.

  [0062] Referring to FIG. 4, a flowchart of a particular embodiment of a method 400 for obtaining configuration data is shown. In one exemplary embodiment, method 400 may be performed using system 100 of FIG. 1, master device 102 of FIGS. 1-3, or any combination thereof.

  [0063] The method 400 includes, at 402, detecting an accessory device at a master device. For example, in FIG. 1, master device 102 may include a port adapted to receive a plug of accessory device 104. The master device 102 may detect the accessory device 104 when the accessory device 104 plug is connected to a port of the master device 102. As another example, the application processor 230 of FIG. 2 may detect the accessory device 104 when the accessory device 104 is connected to the master device 102. For example, a signal may be sent to application processor 230 indicating that a device (eg, accessory device 104) has been connected to a port of master device 102.

  [0064] At 404, an accessory device is identified based on information received from the accessory device. For example, in FIG. 1, accessory device 104 may transmit identification data to master device 102 via microphone line 120 in response to receiving a first signal (eg, a reset signal) from master device 102. . The identification data may include a headset identifier packet (eg, a 64-bit word). Master device 102 may receive identification data from accessory device 104 at single-wire interface 234. The accessory device 104 can be identified by the master device 102 using the identification data.

  [0065] At 406, configuration data associated with the accessory device is searched based on the identification of the accessory device. For example, in FIG. 1, master device 102 may determine whether configuration data 110, 112 associated with accessory device 104 is stored in the memory of master device 102. If the configuration data 110, 112 is not stored in the memory of the master device 102, the master device 102 may establish a network connection with the remote source and request the configuration data 112 over the network connection. For example, master device 102 may establish a connection with server 108 via network 106. Server 108 may include a database that stores configuration data 112. Alternatively, the application processor 230 of FIG. 2 may request that the configuration data 110 be sent from the accessory device 104 via the microphone line 120.

  [0066] At 408, configuration data is obtained. For example, in FIG. 1, server 108 may send configuration data 112 to master device 102 over network 106 in response to receiving the request. Alternatively, accessory device 104 may send configuration data 110 to master device 102 via microphone line 120 in response to receiving a request for configuration data 110. After receiving the configuration data 110, the master device 102 may perform a function based on the configuration data 110 (e.g., generate an anti-noise signal, adjust the audio output to improve the frequency response, changed). Perform functions related to pin assignment, perform functions related to programmable keys of accessory device 104, execute applications, etc.). Master device 102 may also store configuration data 110 in the memory of master device 102 for future use when accessory device 104 is coupled to master device 102.

  [0067] The method 400 of FIG. 4 is such that the master device 102 is not aware of the acoustic properties and / or other characteristics of the accessory device 104 (eg, configuration data 110, 112 is In response to the determination (not stored in memory), it may be possible to obtain configuration data 110, 112 from accessory device 104 or server 108, respectively. As a result, the method 400 allows the master device 102 to adjust a wide range of accessory devices 104 (eg, extensively) by adjusting the processor capabilities of the master device 102 based on configuration data 110, 112 that is specific to a particular accessory device 104. It may be possible to adapt to a headset model).

  [0068] Referring to FIG. 5, a flowchart of a particular embodiment of a method 500 for obtaining active noise cancellation data is shown. In one exemplary embodiment, method 500 may be performed using system 100 of FIG. 1, master device 102 of FIGS. 1-3, or any combination thereof.

  [0069] At 502, master device 102 detects the insertion of a headset (eg, accessory device 104). For example, in FIG. 1 or FIG. 2, the master device 102 may detect when the accessory device 104 plug is connected to a port of the master device 102.

  [0070] At 504, the master device 102 determines whether the headset includes ANC microphone lines 390, 395. If the headset includes ANC microphone lines 390, 395, method 500 moves to 512. If the headset does not include ANC microphone lines 390, 395, method 500 moves to 506. At 506, master device 102 determines whether the headset includes microphone line 120. If the headset includes a microphone line 120, the master device 102 enables the microphone line 120, the left speaker 320, and the right speaker 322 at 510 for voice calling and multimedia playback. If the headset does not include the microphone line 120, the master device 102 uses the headset line for audio output and the internal microphone for voice calls at 508.

  [0071] At 512, when the headset includes ANC microphone lines 390, 395, the master device 102 activates the single wire port. For example, in FIG. 2, application processor 230 may activate single wire interface 234 to allow single wire bi-directional communication. The master device 102 determines at 514 whether the headset is sending identification data. For example, in FIG. 1, the master device 102 may send a first pulse to the headset via the microphone line 120 to determine whether the headset is compatible with a single-wire two-way communication mode. If the headset is not compatible with the single wire two-way communication mode, the method 500 moves to 516 and, at 518, configuration data is determined using alternative methods (eg, manual user input and / or download). If the headset is compatible with the single-wire two-way communication mode, the master device 102 reads the headset identification data at 520. For example, the headset may send identification data to the master device 102 via the microphone line 120. The identification data may be a 48-bit serial number included in a headset identifier packet (eg, a 64-bit word). Master device 102 may receive an identification number from the headset at single wire interface 234. The headset can be identified by the master device 102 using the identification number.

  [0072] At 522, the master device 102 determines whether headset data corresponding to the identification data is in the memory of the master device 102 (eg, whether configuration data 110, 112 is in the memory of the master device 102). To decide. If the headset data is in the memory of the master device 102, the master device 102 deactivates the single wire bi-directional communication mode at 426 and loads the configuration data 110 from the memory at 528. If the headset data is not in the memory of the master device 102, the master device 102 downloads the configuration data 110 at 524 from the headset memory 240 (eg, EEPROM).

  [0073] The method 500 of FIG. 5 is such that the master device 102 does not know the acoustic and / or other characteristics of the headset to the master device 102 (eg, configuration data 110 is stored in the memory of the master device 102). In response to a determination that the configuration data (eg, ANC coefficients) may be obtained from the headset. As a result, the method 500 may allow the master device 102 to adapt to a wide range of headset models. Steps 512-528 are shown as relying on the headset having an ANC microphone line at 504, but in other embodiments, steps 512-528 include whether the headset has an ANC microphone line. May not depend on the decision. For example, at 502, in response to detecting that a headset has been inserted into the master device, at 512, the single wire port is activated. Thus, steps 512-528 can be utilized for configuration data that is not limited to ANC coefficients.

  [0074] Referring to FIG. 6, a flowchart of another particular embodiment of a method 600 for obtaining active noise cancellation data is shown. In one exemplary embodiment, method 600 may be performed using system 100 of FIG. 1, master device 102 of FIGS. 1-3, or any combination thereof.

  [0075] The method 600 includes, at 602, detecting an accessory device at the master device. For example, referring to FIG. 1, master device 102 may include a port adapted to receive a plug of accessory device 104. The master device 102 may detect the accessory device 104 when the accessory device 104 plug is connected to a port of the master device 102. As another example, the application processor 230 of FIG. 2 may detect the accessory device 104 when the accessory device 104 is connected to the master device 102. For example, a signal may be sent to application processor 230 indicating that a device (eg, accessory device 104) has been connected to a port of master device 102.

  [0076] At 604, active noise cancellation (ANC) coefficients associated with the accessory device are received. For example, in FIG. 1, server 108 may send configuration data 112 to master device 102 over network 106 in response to receiving the request. Alternatively, accessory device 104 may send configuration data 110 to master device 102 via microphone line 120 in response to receiving a request for configuration data 110. Configuration data 110, 112 may correspond to ANC coefficients. Master device 102 may search for ANC coefficients based on the identification of accessory device 104 (eg, send a request for ANC coefficients to server 108 and / or accessory device 104).

  [0077] At 606, the audio content is changed based on the ANC coefficients. For example, in FIG. 1, after receiving configuration data 110, 112 (eg, ANC coefficients), master device 102 may detect an anti-noise signal (eg, detected at accessory device 104) to reduce or eliminate background noise. ANC coefficients may be used to generate a signal having an inverse waveform of background noise and provide the accessory device 104 with a modified audio signal (eg, an anti-noise signal combined with a normal audio signal). An algorithm (eg, an ANC algorithm) may be used by the master device 102 to determine the characteristics of the anti-noise signal. The ANC coefficients can be used by the algorithm to adjust the characteristics of the anti-noise signal to be unique to the accessory device 104. For example, accessory device 104 may include a speaker configured to receive audio content from master device 102. The master device 102 may change the audio content (using the ANC algorithm) based on the ANC coefficients and send the changed audio content to the accessory device 104 to reduce the amount of noise at the speaker.

  [0078] The method 600 of FIG. 6 is such that the master device 102 is not aware of the acoustic and / or other characteristics of the headset by the master device 102 (eg, configuration data 110 is not stored in the memory of the master device 102). ) May be enabled to obtain configuration data (eg, ANC coefficients) from the headset. As a result, the method 600 may allow the master device 102 to adapt to a wide range of headset models.

  [0079] Referring to FIG. 7, a block diagram of a wireless device 700 that includes components operable to obtain configuration data is shown. The wireless device 700 includes a main processor 710 such as a digital signal processor (DSP) coupled to a main memory 732.

  [0080] FIG. 7 also shows a display controller 726 coupled to the main processor 710 and the display 728. Camera controller 790 may be coupled to main processor 710 and camera 792. In certain embodiments, wireless device 700 may correspond to master device 102. For example, the wireless device 700 includes an audio codec 232, a single wire interface 234, and an application processor 230. Audio codec 232 may be coupled to main processor 710 and application processor 230 may be coupled to main processor 710. Single wire interface 234 may be coupled to application processor 230.

  [0081] The accessory device 104 may be coupled to the wireless device 700. For example, accessory device 104 can be coupled to codec 232 and single wire interface 234 via microphone line 120. The accessory device 104 includes a memory 240 configured to transmit configuration data 110 to the application processor 230 via the microphone line 120. Application processor 230 may relay configuration data 110 to main processor 710.

  [0082] In a particular embodiment where the configuration data 110 corresponds to ANC coefficients, after the main processor 710 receives the configuration data 110, to detect background noise (and possibly some user voice), FIG. ANC microphones (not shown in FIG. 7) such as ANC microphones 360, 370 may be used. Background noise detected at the ANC microphone may be provided to the main processor 710 as a noise signal via an ANC microphone line (not shown in FIG. 7) such as the ANC microphone lines 390, 395 of FIG. The main processor may generate an anti-noise signal by inputting ANC coefficients to the ANC algorithm. Main processor 710 may combine the anti-noise signal with an audio signal (eg, user voice, MP3 audio, etc.) to generate a modified audio signal. The single wire interface 234 can be set to high impedance and the microphone line 120 can be isolated from the application processor 230 and the memory 240. The modified audio signal may be provided to the accessory device 104 via the audio codec 232. In certain embodiments, the modified audio signal is coupled to the left speaker line (not shown) coupled to the left speaker (not shown) of the accessory device 104, to the right speaker (not shown) of the accessory device 104. May be provided to the accessory device 104 via a right speaker line (not shown), or any combination thereof. The main microphone 250 can be used to detect audio (eg, user voice) and send the detected audio to the main processor 710 via the audio codec 232 and the microphone line 120.

  [0083] Main memory 732 may be a tangible non-transitory processor readable storage medium containing instructions 758. Instruction 758 may be a processor, such as main processor 710, application processor 230, or components thereof, to perform method 400 of FIG. 4, method 500 of FIG. 5, method 600 of FIG. 6, or any combination thereof. Can be executed by FIG. 7 also illustrates that the wireless controller 740 can be coupled to the main processor 710 and coupled to the antenna 742 via a radio frequency (RF) interface 780. In particular embodiments, main processor 710, display controller 726, main memory 732, codec 232, camera controller 790, application processor 230, single wire interface 234, and wireless controller 740 are in a system-in-package or system-on-chip device 722. include. In certain embodiments, as shown in FIG. 7, display 728, input device 730, antenna 742, accessory device 104, RF interface 780, power supply 744, and single wire interface 234 are external to system-on-chip device 722. It is in. However, each of display 728, input device 730, microphone 718, antenna 742, accessory device 104, RF interface 780, power supply 744, and single-wire interface 234 are coupled to components of system-on-chip device 722, such as an interface or controller. Can be done.

  [0084] In conjunction with the described embodiments, a first apparatus is disclosed that includes means for obtaining configuration data. For example, the means for obtaining executes the master device 102 of FIGS. 1-3, the single wire interface 234 of FIG. 2, the microphone line 120 of FIGS. 1-2, the port 380 of FIG. 3, and the instruction 758 of FIG. Application processor 230 programmed to do so, main processor 710 programmed to execute the instructions 758 of FIG. 7, one or more other devices, circuits, or modules for obtaining configuration data, or they May be included in any combination.

  [0085] The first apparatus may also include means for storing configuration data. For example, the means for storing ANC coefficients may be the master device 102 of FIGS. 1-3, the memory 255 of FIG. 2, one or more other devices, circuits, or modules for storing configuration data, or Any combination thereof may be included.

  [0086] In conjunction with the described embodiments, a second apparatus is disclosed that includes means for obtaining ANC coefficients. For example, the means for obtaining ANC coefficients are: master device 102 of FIGS. 1-3, single wire interface 234 of FIG. 2, microphone line 120 of FIGS. 1-2, port 380 of FIG. 3, instructions of FIG. Application processor 230 programmed to execute 758, main processor 710 programmed to execute instructions 758 of FIG. 7, one or more other devices, circuits, or modules for obtaining ANC coefficients Or any combination thereof.

  [0087] The second apparatus may also include means for modifying the audio content based on the ANC coefficients. For example, the means for changing the audio content includes the master device 102 of FIGS. 1-3, the application processor 230 programmed to execute the instructions 758 of FIG. 7, and the program to execute the instructions 758 of FIG. Main processor 710, one or more other devices, circuits, or modules for obtaining ANC coefficients, or any combination thereof.

  [0088] Further, the various exemplary logic blocks, configurations, modules, circuits, and algorithm steps described with respect to the embodiments disclosed herein may be implemented in electronic hardware, computer software executed by a processor, or both. Those skilled in the art will appreciate that they can be implemented as a combination. Various illustrative components, blocks, configurations, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or processor-executable instructions depends on the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in a variety of ways for each particular application, but such implementation decisions should not be construed as departing from the scope of the present disclosure.

  [0089] The method or algorithm steps described in connection with the embodiments disclosed herein may be implemented directly in hardware, implemented in software modules executed by a processor, or implemented in combination of the two. Can be done. Software modules include random access memory (RAM), flash memory, read only memory (ROM), programmable read only memory (PROM), erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), It may reside in registers, a hard disk, a removable disk, a compact disk read-only memory (CD-ROM), or any other form of non-transitory storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (ASIC). The ASIC may reside in a computing device or user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a computing device or user terminal.

[0090] The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the disclosed embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the principles defined herein may be applied to other embodiments without departing from the scope of the disclosure. Accordingly, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest possible scope consistent with the principles and novel features defined by the claims. .
Hereinafter, the invention described in the scope of claims of the present application will be appended.
[C1]
Detecting an accessory device in the master device;
In response to detecting the accessory device, receiving at the master device an active noise cancellation (ANC) coefficient associated with the accessory device;
In the master device, changing audio content based on the ANC coefficient;
A method comprising:
[C2]
The method of C1, wherein the accessory device corresponds to a headset comprising a speaker configured to receive the modified audio content from the master device.
[C3]
The method of C2, further comprising transmitting the modified audio content to the headset to reduce an amount of noise at the speaker.
[C4]
The method of C2, wherein the headset further comprises a memory configured to store data related to acoustic characteristics of the speaker.
[C5]
The method of C4, wherein the data includes the ANC coefficients.
[C6]
The method of C1, further comprising identifying the accessory device based on information received from the accessory device, wherein the ANC coefficient is received based on the identification.
[C7]
Identifying the accessory device comprises:
Determining whether the accessory device includes an ANC microphone line;
In response to determining that the accessory device includes the ANC microphone line, determining whether the accessory device is compatible with a single-wire two-way communication mode;
Receiving identification data from the accessory device based on a determination that the accessory device is compatible with the single-wire two-way communication mode, wherein a master device identifies the accessory device based on the identification data The method of C6, comprising.
[C8]
Establishing a network connection;
Requesting the ANC factor from a remote source via the network connection;
The method of C6, further comprising:
[C9]
The method of C8, wherein the ANC coefficients are received from the remote source via the network connection.
[C10]
The method of C1, further comprising requesting the ANC coefficient to be sent from the accessory device to the master device.
[C11]
The method of C10, wherein the ANC coefficients are received from a memory in the accessory device.
[C12]
A processor in the master device;
Detecting an accessory device in the master device;
In response to detecting the accessory device, receiving an active noise cancellation (ANC) coefficient associated with the accessory device;
Changing audio content based on the ANC coefficient;
A memory for storing instructions executable by the processor to perform an operation comprising:
A device comprising:
[C13]
The apparatus of C12, wherein the accessory device corresponds to a headset comprising a speaker configured to receive the modified audio content from the master device.
[C14]
The apparatus of C13, wherein the operation further comprises transmitting the modified audio content to the headset to reduce an amount of noise in the speaker.
[C15]
The apparatus of C13, wherein the headset further comprises an electrically erasable programmable read only memory (EEPROM) configured to store data related to acoustic characteristics of the speaker.
[C16]
The apparatus of C15, wherein the data includes the ANC coefficients.
[C17]
The apparatus of C12, wherein the operation further comprises identifying the accessory device based on information received from the accessory device, wherein the ANC coefficient is received based on the identification.
[C18]
Identifying the accessory device comprises:
Determining whether the accessory device includes an ANC microphone line;
In response to determining that the accessory device includes the ANC microphone line, determining whether the accessory device is compatible with a single-wire two-way communication mode;
Receiving identification data from the accessory device based on a determination that the accessory device is compatible with the single-wire two-way communication mode, wherein a master device identifies the accessory device based on the identification data The apparatus according to C17, comprising:
[C19]
Said action is
Establishing a network connection;
Requesting the ANC factor from a remote source via the network connection;
The apparatus according to C17, further comprising:
[C20]
The apparatus of C19, wherein the ANC coefficients are received from the remote source via the network connection.
[C21]
The apparatus of C12, wherein the operation further comprises requesting the ANC coefficient to be sent from the accessory device to the master device.
[C22]
The apparatus of C21, wherein the ANC coefficients are received from an electrically erasable programmable read only memory (EEPROM) in the accessory device.
[C23]
When executed by a processor in the master device, the processor
Detecting accessory devices;
In response to detecting the accessory device, receiving an active noise cancellation (ANC) coefficient associated with the accessory device;
Changing audio content based on the ANC coefficient;
A computer-readable storage device comprising instructions for causing
[C24]
Further comprising instructions that, when executed by the processor, cause the processor to request that the ANC coefficient be sent from the accessory device to the master device, wherein the ANC coefficient is electrically erasable in the accessory device. The computer readable storage device of C23, received from a programmable read only memory (EEPROM), wherein the EEPROM is powered by the master device.
[C25]
When executed by the processor, the processor
Identifying the accessory device based on information received from the accessory device;
Establishing a network connection;
Requesting the ANC coefficient from a remote source via the network connection based on the identification of the accessory device, wherein the ANC coefficient is received from the remote source via the network connection;
Further comprising an instruction to perform
Here, the computer readable storage device of C23, wherein the ANC coefficients are received based on the identification.
[C26]
The computer readable storage device of C23, wherein the accessory device corresponds to a headset comprising a speaker configured to receive the modified audio content from the master device.
[C27]
Means for obtaining active noise cancellation (ANC) coefficients, wherein obtaining said ANC coefficients;
Detecting an accessory device in the master device;
In response to detecting the accessory device, receiving the ANC coefficient associated with the accessory device;
including,
Means for changing audio content based on the ANC coefficient in the master device;
A device comprising:
[C28]
The apparatus of C27, wherein the accessory device corresponds to a headset comprising a speaker configured to receive the modified audio content from the master device.
[C29]
The apparatus of C27, wherein the non-volatile memory of the accessory device is powered by the master device.
[C30]
The apparatus of C27, wherein the ANC coefficients are received from a remote source or from a memory in the accessory device via a network connection based on the identification of the accessory device.

Claims (19)

Detecting the accessory device by the master device;
Requesting the accessory device for an ANC coefficient associated with the accessory device based on determining by the master device that the accessory device includes an active noise cancellation (ANC) microphone line;
In the master device, changing audio content based on the ANC coefficient;
Identifying the accessory device based on information received from the accessory device, wherein the ANC coefficient is received from the accessory device based on identifying the accessory device to identify the accessory device That is
In response to determining that the accessory device includes the ANC microphone line, determining whether the accessory device is compatible with a single-wire two-way communication mode;
Receiving identification data from the accessory device based on a determination that the accessory device is compatible with the single-wire two-way communication mode, wherein the master device is configured to remove the accessory device based on the identification data. Identify,
Comprising
A method comprising:   The method of claim 1, wherein the accessory device corresponds to a headset comprising a speaker configured to receive the modified audio content from the master device.   The method of claim 2, further comprising transmitting the modified audio content to the headset to reduce an amount of noise at the speaker.   The method of claim 2, wherein the headset further comprises a memory configured to store data related to acoustic characteristics of the speaker.   The method of claim 4, wherein the data includes the ANC coefficients.   The master device further comprises receiving the ANC coefficient from the accessory device, wherein the ANC coefficient is received from a memory in the accessory device via a microphone line of the accessory device, and the microphone line The method of claim 1, wherein is different from the ANC microphone line.   The method of claim 1, further comprising determining whether the accessory device is compatible with a single-wire two-way communication mode in response to a determination that the accessory device includes the ANC microphone line.   Further comprising receiving identification data from the accessory device based on a determination that the accessory device is compatible with a single-wire two-way communication mode, wherein the master device is based on the identification data. The method of claim 1, wherein: Changing the audio content includes
Receiving at the master device a background noise signal from the accessory device via the ANC microphone line;
Generating a noise prevention signal by the master device based on the background noise signal and the ANC coefficient, wherein the noise prevention signal includes an inverse signal of the background noise signal;
The method of claim 1, comprising: combining, by the master device, the anti-noise signal with an audio signal of the audio content. Determining a connection between a first connector of the master device and a second connector of the accessory device before detecting the accessory device;
Determining that the accessory device includes the ANC microphone line based on detecting a configuration of the second connector;
The method of claim 1, further comprising: A processor in the master device;
Detecting an accessory device in the master device;
Requesting the accessory device for an ANC coefficient associated with the accessory device based on determining by the master device that the accessory device includes an active noise cancellation (ANC) microphone line;
Changing audio content based on the ANC coefficients;
Identifying the accessory device based on information received from the accessory device, wherein the ANC coefficient is received from the accessory device based on identifying the accessory device to identify the accessory device That is
In response to determining that the accessory device includes the ANC microphone line, determining whether the accessory device is compatible with a single-wire two-way communication mode;
Receiving identification data from the accessory device based on a determination that the accessory device is compatible with the single-wire two-way communication mode, wherein the master device is configured to remove the accessory device based on the identification data. Identify,
Comprising
And a memory for storing instructions executable by the processor to perform an operation.   The apparatus of claim 11, wherein the accessory device corresponds to a headset comprising a speaker configured to receive the modified audio content from the master device.   The headset further comprises an electrically erasable programmable read only memory (EEPROM) configured to store data related to the acoustic characteristics of the speaker, wherein the data is the ANC coefficient The apparatus of claim 12, comprising:   The apparatus further comprises a first connector configured to receive a second connector of the accessory device, wherein the first connector includes a first pin associated with the ANC microphone line and a second ANC microphone. 12. The apparatus of claim 11, including a second pin associated with a line, wherein the ANC microphone line is different from the second ANC microphone line. When executed by a processor in the master device, the processor
Detecting accessory devices;
Requesting the accessory device for an ANC coefficient associated with the accessory device based on determining by the master device that the accessory device includes an active noise cancellation (ANC) microphone line;
Changing audio content based on the ANC coefficients;
Identifying the accessory device based on information received from the accessory device, wherein the ANC coefficient is received from the accessory device based on identifying the accessory device to identify the accessory device That is
In response to determining that the accessory device includes the ANC microphone line, determining whether the accessory device is compatible with a single-wire two-way communication mode;
Receiving identification data from the accessory device based on a determination that the accessory device is compatible with the single-wire two-way communication mode, wherein the master device is configured to remove the accessory device based on the identification data. Identify,
Comprising
A computer-readable storage device comprising instructions for causing   Further comprising instructions that, when executed by the processor, cause the processor to request that the ANC coefficient be sent from the accessory device to the master device, wherein the ANC coefficient is electrically erasable in the accessory device. The computer readable storage device of claim 15, wherein the computer readable storage device is received from a programmable read only memory (EEPROM), wherein the EEPROM is powered by the master device. Means for detecting an accessory device in the master device;
It means for the accessory device based on determining by the master device and includes an active noise cancellation (ANC) microphone line, requesting A NC coefficients that are related to the accessory device to the accessory device,
Means for changing audio content based on the ANC coefficients in the master device;
Means for identifying the accessory device based on information received from the accessory device, wherein the ANC coefficient is received from the accessory device based on identifying the accessory device; Means for identification are:
In response to determining that the accessory device includes the ANC microphone line, determining whether the accessory device is compatible with a single-wire two-way communication mode;
Receiving identification data from the accessory device based on a determination that the accessory device is compatible with the single-wire two-way communication mode, wherein the master device is configured to remove the accessory device based on the identification data. Identify,
Comprising
A device comprising:   Means for providing power to a non-volatile memory of the accessory device, wherein the accessory device comprises a speaker configured to receive the modified audio content from the master device; The apparatus according to claim 17 corresponding.   The apparatus of claim 17, further comprising means for receiving the ANC coefficients from a memory in the accessory device based on the identification of the accessory device.

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