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JP2014180016

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DESCRIPTION JP2014180016
Abstract: An apparatus and method for communication are disclosed. A receiver (201) configured
to condition an audio signal, and a transducer circuit (210) configured to provide an ambient
signal in response to an ambient condition, the receiver receiving the ambient signal from the
transducer circuit The receiver is further configured to adjust and configured to combine the
adjusted ambient signal and the adjusted audio signal, and the receiver is configured to apply the
adjustment to at least one of the ambient signal and the audio signal. It is further configured to
adjust. [Selected figure] Figure 2
Method and apparatus for rendering an ambient signal-Claiming priority
[0001]
This application claims the benefit of U.S. Provisional Patent Application No .: "The method and
apparatus for rendering ambient signals", filed July 24, 2008, which is assigned to the assignee
of the present application and which is expressly incorporated by reference. Claim priority to 61
/ 083,449.
[0002]
The present disclosure relates generally to communication systems, and more particularly to a
receiver for rendering ambient signals in a communication system.
[0003]
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Peer-to-peer networks are commonly used to connect to wireless devices via an ad hoc
connection.
These networks are different from the traditional client-server model where communication
agencies usually have a central server.
Peer-to-peer networks have equivalent peer devices that communicate directly with one another.
Such networks are useful across multiple purposes. Peer-to-peer networks may be used, for
example, as consumer electron beam replacement systems for short distance or indoor
applications. These networks, called wireless personal area networks (WPANs), serve to
efficiently convey video, audio, voice, documents and other media between wireless devices over
short distances. As an example, a digital audio player may be used to stream audio to the headset.
As another example, the cell phone may provide a connection to a headset to allow hands-free
operation by the user.
[0004]
Headsets that provide hands-free conversation services and / or audio playback capabilities are
of great interest for short-range communication. These headsets generally provide good isolation
from ambient conditions to maintain audio quality. As a result, users are typically required to
disconnect their headsets to engage in face-to-face conversations with people, or to listen to
broadcasts from different speaker devices. Thus, there is a need in the art for an improved
receiver that gives the user a headset that interacts with the ambient sound source.
[0013] Various aspects of the present disclosure are illustrated by way of example and not
limitation. In the reference figures, reference numerals may be used to indicate features in the
present disclosure. FIG. 1 is a conceptual diagram illustrating an example of a wireless
communication system. FIG. 2 is a functional block diagram illustrating an example of a receiver.
FIG. 3 is a functional block diagram illustrating another example of a receiver. FIG. 4 is a block
diagram illustrating an example of the functionality of the receiver.
[0014] Thus, in general, the various features illustrated in the figures may be simplified for the
sake of clarity. Thus, the drawings may not depict all of the components of a given apparatus (eg,
device) or method. In addition, reference numerals may be used to indicate features in the
present specification and drawings.
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[0015] Various aspects of the present disclosure are described below. It should be understood
that the teachings herein may be embodied in a wide variety of forms and that the specific
configurations, functions or both disclosed herein are merely exemplary. Based on the teachings
herein, one of ordinary skill in the art will appreciate that the aspects disclosed herein may be
realized independently of the other aspects and that two or more of these aspects may be
combined in various ways. It should be understood that good things. For example, an apparatus
may be implemented using the many aspects set forth herein, or a method may be practiced
using the many aspects set forth herein. Further, such devices may use other configurations,
functions, or configurations and functions in addition to one or more of the aspects described
herein, or in addition to one or more aspects described herein. In addition to one or more of the
aspects set forth herein, or methods may be implemented using other configurations, functions,
or configurations and functions in addition to one or more of the aspects set forth herein. May be
executed. Aspects may comprise one or more elements of a claim.
[0016] Several aspects of the receiver system will be shown here. The receiver system is suitable
for being incorporated into a headset (eg headphones, earphones etc) but may be a telephone (eg
mobile phone) a personal digital assistant (PDA) entertainment device (eg music or video device),
Microphone, medical detection device (eg, biometric sensor, heart rate monitor, pedometer, EKG
device, smart bandage etc.), user I / O device (eg, clock, remote control, light switch, keyboard,
mouse etc.), medical A medical monitor that receives data from a sensing device, an
environmental sensing device (e.g., a tire pressure monitor), a computer, a point of sale device, an
entertainment device, a hearing aid, a set top box, or any that that provides audio to a user It may
be incorporated into other audio devices such as devices. The nodes comprise various
components in addition to the receiver system. As an example, the headset may comprise a
transducer configured to provide the user with an audio output, the watch may comprise a user
interface configured to provide the display to the user, and the sensing device The may comprise
a sensor configured to provide an audio output to the user.
[0017] In many applications described above, the receiver system may be part of a transmitting
as well as transmitting node. Thus, such nodes require a transmitter which may be a separate
component or the receiver system may be incorporated into a single component known as a
"transceiver". Regardless of whether the receiver system is a stand-alone node, incorporated into
a transceiver, or part of a node in a wireless communication system, one skilled in the art can use
any of the various concepts described throughout this disclosure. It will be readily appreciated
that it is applicable to appropriate receiver functions.
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[0018] In the following detailed description, various aspects of the receiver system will be shown
for rendering ambient signals in the headset. However, one skilled in the art will immediately
appreciate that these aspects are equally applicable to receiver systems for other applications.
Referring to FIG. 1, a headset 102 is shown in communication with various devices, including a
mobile phone 104, a digital audio player 106 (eg, an MP3 player), and a computer 108. At any
time, the headset 102 may receive audio from one or more of these devices. The audio received
by headset 102 may be in the form of an audio file stored in memory of digital audio player 106
or computer 108. Alternatively or additionally, headset 102 may receive audio streamed from
computer 108 through a connection with a wide area network or a local area network. A wide
area network is a wireless network that includes local, national, or even international regions
such as the Internet. A local area network generally includes ten to several hundred meters, and
is a network commonly found within a home, a company, a coffee shop, an airport, a hotel and
other local. The headset 102 may receive audio in the form of voice communication from the
mobile phone 104 while calls over the mobile network support CDMA2000 or other applicable
telecommunications standards.
[0019] Headset 102 is shown in FIG. 1 with wireless connections between various devices. Ultrawide band (UMB) is a wireless technology that can be applied to support these wireless
connections. However, as those skilled in the art will readily appreciate, other applicable wireless
technologies (eg, Bluetooth, WiMax, Wi-Fi, etc.) may be used. UMB is a common technology for
high speed short range communication, and is defined as any wireless technology with a
spectrum that occupies a bandwidth of 20 percent or more of the center frequency or a
bandwidth of at least 500 MHz. Alternatively or additionally, headset 102 may have a wired
connection to one or more devices (e.g., computer 108). The wired connection may be a network
connection such as an Ethernet connection or other applicable connection. The headset 102 may
be configured to access an external storage device (e.g., a memory card or the like capable of
accommodating an MP3 file via a USB port).
[0020] FIG. 2 is a functional block diagram illustrating an example of a receiver system. Receiver
system 200 is shown with receiver 201. The receiver 201 comprises an adapter 202, a decoder
204, an audio amplifier 206, an ambient amplifier 216, an ambient sound analyzer 218, a
combiner 220 and a digital to analog converter (DAC) 222.
[0021] Adapter 202 provides an interface to the audio source for the receiver system. In one
configuration of the receiver system, the adapter 202 is configured to implement the physical
(PHY) layer and the medium access control (MAC) layer of the receiver system capable of
supporting wireless or wired connection to the transmission medium. It is also good. As an
example, the PHY and MAC layers may be configured to support UMB through a wireless
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medium. The PHY layer implements all physical and electrical standards that interface the
receiver system 200 with wireless and / or wired media. In particular, the PHY layer can be
modified to demodulate the RF carrier to recover the audio signal for forward error correction
(eg Turbo decoding), digital demodulation (eg FSK, PSK, QAM etc) and wireless transmission.
Have the responsibility to provide various processing functions. The MAC layer manages audio
content transmitted via the PHY layer, which allows some devices to communicate with the
receiver system 200.
[0022] Alternatively or additionally, adapter 202 may be configured to interface receiver system
200 with an external storage device (not shown). Examples of external storage devices include
flash disks, flash cards, secure data flash cards, pen drives, compact disks (CDs), magnetic disks,
multimedia memory cards, secure digital cards, memory sticks, compact flash (registered
trademark) cards, Includes secure digital cards and smart media cards. An external storage
device may be connected to the adapter 202 through a USB port (not shown) on the receiver
system 200 or other suitable means.
[0023] The audio signal recovered by the adapter 202 may be encoded according to a predefined
audio file format or a streaming audio format. In such cases, the decoder 204 may be used to
recover the audio signal from the encoded transmission recovered by the adapter 202. In one
example of a receiver system, the decoder 204 may be configured to recover an audio signal
encoded with an adaptive gain change algorithm described below. However, decoder 204 may be
configured to process other encoding schemes. Those skilled in the art will readily be able to
implement an appropriate decoder 204 for a particular application. The decoder 204 may be a
stand-alone component as shown in FIG. 2 or may be incorporated into an audio codec in the
case where the receiver system is part of a headset that not only receives but also transmits.
[0024] The decoded audio signal is provided to the audio amplifier 206. Audio amplifier 206
provides a means for adjusting the gain of the decoded audio signal. In this example, the gain of
the audio amplifier 206 may be manually adjusted by the user via the user interface 208 to
control the volume of the headset. Buttons, knobs or other means (not shown) may be provided
in the user interface 208 to allow the user to manually adjust the gain of the audio amplifier 206.
As will be described in more detail below, the gain of audio amplifier 206 may be automatically
adjusted based on the ambient signal. As used herein, "ambient signal" should be understood to
include any signal within the audio band that is not part of the audio signal. By way of example,
an "audio signal" may be audio from a computer (e.g. music), an audio file from a computer (e.g.
MP3 file), a digital audio player (e.g. MP3 player), or a memory card or voice from a mobile
phone May be flushed. The "ambient signal" may be the voice of a person in close proximity to
the headset, a broadcast from a different speaker, a siren from an emergency vehicle or device,
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etc.
[0025] The receiver system 200 further comprises a transducer circuit 210 including a sensor
212 and a signal conditioner / analog-to-digital converter (ADC) 214. In this example, the sensor
is an audio transducer (eg, a microphone).
[0026] Ambient signals may be received by audio transducer 212 or provided to signal
conditioner / ADC 214. Prior to output from the transducer circuit 210, the signal conditioner /
ADC 214 processes ambient signals received by the sensor 212. The signal conditioner / ADC
214 may comprise various known components, such as amplifiers, attenuators, filters, electrical
insulators, etc., as well as an ADC for converting ambient signals to digital signals.
[0027] Ambient signals output from the transducer circuit 210 may be conditioned by the
ambient amplifier 216. Similar to audio amplifier 206, ambient amplifier 216 may be manually
adjusted by the user via user interface 208, or may be automatically adjusted based on the
ambient signal in a manner described in more detail below. Good. A second button, knob or other
means (not shown) may be provided to the user interface 208 to automatically adjust the gain of
the ambient amplifier 216.
[0028] The ambient sound analyzer 218 may analyze the ambient signal and deactivate the user
gain control settings to automatically control the gain of one or both of the amplifiers 206, 216
in certain circumstances. Ambient sound analyzer 218 may comprise a programmable storage
medium such as RAM memory, flash memory, EPROM memory, etc. with predetermined ambient
signals stored thereon. Ambient sound analyzer 218 may further comprise comparator circuitry
(not shown) to compare the preprogrammed audio signal with the ambient signal received by
transducer circuit 210. In this example, if the ambient sound analyzer 218 does not acknowledge
the received ambient signal, the gains of the amplifiers 206, 216 are each controlled by the user
via the user interface 208. If ambient sound analyzer 218 recognizes the ambient signal received
as a preprogrammed signal, such as, for example, frequency, beat, amplitude, etc., ambient sound
analyzer 218 assumes control of the gain of amplifiers 206, 216. As an example, the user or
manufacturer may program an ambient sound analyzer 218 with a sound of an alert, a tone
broadcast by an emergency broadcast system, or one or more specific ringtones. If any of the
preprogrammed signals are received by the transducer circuit 210 as an ambient signal, the
ambient sound analyzer 218 may increase the gain of the ambient amplifier 216 or audio to alert
the user in response to the ambient signal. The gain of amplifier 206 may be reduced. Thus, the
user may be alerted immediately to the call origination or alert signal of the telephone.
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[0029] A combiner 220, such as a summer or other means, may be used to combine the
conditioned ambient signal with the audio signal. The combined signal is converted to an analog
signal via DAC 222 and output through speaker 224, such as a headphone.
[0030] The user may decide to experience noise-free audio reproduction by setting the gain of
ambient amplifier 216 to zero. The user may decide to engage in something other than speaking
without disconnecting the headset by setting the gain of the audio amplifier 206 to zero. The
user may mix different levels of audio and ambient signal by controlling two independent gain
knobs for the amplifiers 206,216.
[0031] Furthermore, as noted above, with the additional logic provided for automatic gain
control, the gains of amplifiers 206, 216 can be automatically varied based on known stimuli. For
example, the gain of ambient amplifier 216 may be programmed to adjust and set the gain of
audio amplifier 206 to zero in case of an alarm. This will allow the user to react quickly to nonaudio enabled emergency signals in conventional in-ear canal earphone scenarios. Other
examples of this mode are possible.
[0032] FIG. 3 is a functional block diagram illustrating another example of a receiver system. In
this example, the receiver system is very similar to the receiver system described in connection
with FIG. 2, so only differences will be described.
[0033] In this example, sensor 212 is a non-audio sensor that detects one or more ambient
conditions. As an example, sensor 212 may be a detector that provides and generates a signal
upon sensing ambient conditions such as smoke (in other words, a smoke detector). This signal is
processed by the signal conditioner / ADC 214 and provided to the audio generator 302. Audio
generator 302 is configured to generate an ambient signal. As described in more detail above, the
ambient signal may be amplified by the ambient amplifier 216, may be combined with the audio
signal by the combiner 220, may be converted to an analog signal, or may be coupled to the
speaker 224. It may be provided. In this example, the ambient sound analyzer 218 may be
programmed to set the gain of the audio amplifier 206 to zero to ensure that the user is alerted
of the ambient condition (in other words, smoke). As used herein, "ambient" is any ambient
disturbance that is not part of the audio signal including ambient signals (in other words, any
signal in the audio band that is not part of the audio signal) and disturbance outside the audio
band It will be understood to encompass (e.g., smoke).
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[0034] FIG. 4 is a block diagram illustrating an example of the functionality of the receiver. In
this example, the device 400 comprises a module 402 for receiving an audio signal and a module
404 for adjusting the audio signal. These modules may be realized by the receiver 201 (shown in
FIG. 2) described above or by any other suitable means. The apparatus 400 also comprises a
module 406 for providing an ambient signal as a function of the ambient conditions, which may
be realized by the transducer circuit 210 (shown in FIG. 2) described above or by any other
suitable means. The apparatus comprises module 408 for adjusting the ambient signal, module
410 for adjusting the adjustment applied to at least one of the ambient signal and the first signal,
and the adjusted ambient signal and the adjusted audio signal. It further comprises a module 412
for coupling. The modules may be implemented by the receiver 201 described above (shown in
FIG. 2) or by any other suitable means.
[0035] The components described herein may be implemented in various ways. For example, a
device may represent a function implemented by one or more integrated circuits (eg, an ASIC) or
may be implemented in other ways as taught herein, a series of interrelationships May be shown
as a functional block having As described herein, an integrated circuit may comprise a processor,
software, other components or any combination thereof. Such an apparatus may comprise one or
more modules that may perform one or more of the functions described above with respect to
the various figures.
[0036] As mentioned above, in some aspects these components may be implemented via
appropriate processor components. These processor components may be implemented using
configurations as taught herein. In some aspects, a processor may be adapted to implement some
or all of the functionality of one or more of these components.
[0037] As mentioned above, the device may comprise one or more integrated circuits. For
example, in some aspects a single integrated circuit may implement one or more functionalities
of the illustrated components. On the other hand, in one or more other aspects, the integrated
circuit may implement one or more functionalities of the illustrated components.
[0038] Additionally, the components and functionality described herein may be implemented
using any suitable means. Such means may, at least in part, be implemented using similar
arrangements as taught herein. For example, the components described above may be
implemented in an "ASIC" or may correspond to a similarly designed "means for" feature. Thus, in
some aspects, one or more such means may be implemented using processor components,
integrated circuits, or other suitable configurations as taught herein. .
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[0039] Also, any reference to an element herein using a designation such as "first", "second", etc.
does not generally limit the order or number of these elements. Rather, these designations may
be used herein as a convenient method of identification between two or more elements or
instances of elements. Thus, references to the first and second elements may be such that only
two elements may be used there, or if the first element precedes the second element in some
manner. It does not mean that you do not. Also, if there is no obvious alternative, the set of
elements may comprise one or more elements. Furthermore, terms of the form "at least one of A,
B or C" as used in the present specification or claims mean "A or B or C or any combination
thereof".
[0040] Those skilled in the art will appreciate that information and signals may be represented
using any one of a variety of different technologies and techniques. For example, data,
instructions, commands, information, signals, bits, symbols and chips that may be referenced
throughout the above description may be represented by voltages, currents, electromagnetic
waves, magnetic fields or magnetic particles, light fields or light particles, or any combination
thereof. It can be done.
[0041] Those skilled in the art will further appreciate that the various illustrative logic blocks,
modules, processors, means, circuits and algorithm steps described in connection with the
disclosure herein may be electronic hardware (e.g., source coding or otherwise). Design code
(referred to as software or software module ) that incorporates various forms of
programs or instructions, which may be designed using techniques; digital implementation,
analog implementation, or a combination of the two) It will be appreciated that it can be realized
as well) or a combination of both. To clearly illustrate the interchangeability of hardware and
software, various illustrative components, blocks, modules, circuits, and steps have been
generally described in terms of their functionality. Whether such functionality is implemented as
hardware or software depends upon the particular application and design constraints imposed on
the overall system. Skilled artisans may implement the described functionality in varying ways
for each particular application, but such implementation decisions should not be interpreted as
causing a departure from the scope of the present disclosure.
[0042] The various illustrative logic blocks, modules and circuits shown in connection with the
disclosure herein may be implemented or carried out by an integrated circuit ("IC"), access
terminal or access point. ICs may be general purpose processors, digital signal processors (DSPs),
application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other
programmable logic devices, discrete gate or transistor logic, discrete hardware components,
electrical components, It may comprise an optical component, a mechanical component, or any
01-05-2019
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combination of the above designed to perform the functions shown herein, or a code or
instruction located inside the IC, outside the IC, or both. It may be executed. While a
microprocessor may be used as a general purpose processor, it is alternatively possible to use a
processor, controller, microcontroller or state machine according to the prior art. The processor
may also be implemented as, for example, a combination of a DSP and a microprocessor, a
plurality of microprocessors, one or more microprocessors connected to a DSP core, or any such
configuration but a combination of computing devices. It is possible.
[0043] It is understood that the specific order or hierarchy of steps in the disclosed process is an
example of a sample approach. It is understood that based on design choices, while remaining
within the scope of the present disclosure, specific orders or hierarchies of steps in the process
may be rearranged. The accompanying method claims, which refer to the components of the
various steps in the sample order, are not meant to be limited to any particular order or
hierarchy.
[0044] The steps of the methods and algorithms described in connection with the disclosure
herein may be embodied directly by hardware, by software modules executed by a processor, or
a combination of these. Software modules (including, for example, executable instructions and
associated data) and other data may be RAM memory, flash memory, ROM memory, EPROM
memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or the like. It may be
stored in a data memory such as any other form of computer readable storage medium known in
the art. A sample storage medium may be coupled to a machine, such as, for example, a computer
/ processor (which may be referred to herein as a "processor"). Such a processor may read
information (eg, code) from the storage medium and may write information to the storage
medium. A sample storage medium may be integrated into the processor. The processor and the
storage medium may reside in an ASIC. The ASIC may reside in user equipment. Alternatively, the
processor and the storage medium may be present as discrete components in user equipment.
Further, in some aspects, a suitable computer program product comprises a computer readable
medium comprising code (eg, executable by at least one computer) related to one or more
aspects of the present disclosure. In some aspects, a computer program product may comprise
packaging material.
[0045] The present invention is provided to enable those skilled in the art to practice the various
aspects disclosed herein. Various modifications to these aspects will be apparent to those skilled
in the art, and the general principles defined herein may be applied to other aspects. Accordingly,
the claims are not intended to be limited to the aspects set forth herein but are intended to be
consistent with the widest scope consistent with the wording of the claims. All structural and
functional equivalents to the elements of the various aspects described throughout this
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disclosure, which are or will become known to those of ordinary skill in the art, are intended to
be covered by the appended claims. Further, nothing disclosed herein is not intended to be
dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims.
Any element in the claims is 35 U unless it is explicitly stated using the term "means for" or in
the case of a method claim unless it is written using the term "steps for" .SC It should not be
interpreted under Article 112, paragraph 6.
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