TWI335154B - Wireless audio distribution system - Google Patents

Description

1335154 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to wireless communication systems and, more particularly, to providing a plurality of selectable audio-visual signals from one or more sources to a car Wireless audio and video systems in the aircraft or in buildings - or multiple listeners. [Prior Art]

Currently known and commercially available wireless audio systems generally include an audio source (such as a tuner) that transmits a signal to one or more wireless headsets, wherein the signal carries audio data for a single stereo channel. In order to select a different audio data channel, someone must operate the tuner to transmit the new desired channel. All wireless headsets that receive the signal at this time will begin to regenerate the new channel. A dual channel system is currently known. For example, the dual channel automatic infrared headset system sold by Unwired Technology LLC (Two-Channel Autom〇tive Infrare (i Headph〇ne)

System) provides an infrared transmitter that can be connected to two stereo sources and will transmit different IR signals for each channel. The wireless headset has a channel a/b selector switch to allow the user of the headset to select between two channels. This system requires two separate stereo sources and relies on a light-emitting diode (led) that distinguishes between different frequencies (ie, colors) between the two audio channels. The system also requires the transmitter to be mounted at a location where the two signals propagating can be received at any location within the vehicle. Wireless video systems are also known. There is a need for a wireless communication system that includes one or more wireless receiving devices (such as earphones), wherein the system provides a plurality of wireless signals and other data for each of the respective receiving devices at ^=4亍<Good choices, ^, 谭, Tan. The system should occupy minimal space in the home or vehicle and should ideally be flexible enough to allow analog communication and digital communication and minimize interference between different signals transmitted with ^. SUMMARY OF THE INVENTION A wireless audio distribution system may have a wireless transmitter that responds to a plurality of audio input channels for transmitting signals for carrying audio signals; and a receiver that responds to signals transmitted through the wheels for receiving (n) The local setting selector is used to select one or more of the audio input channels for regeneration. For example, the driver may selectively use an additional audio source such as a microphone to talk over the mobile phone or via a wireless master switch that can be used to change local settings (such as a sound channel or s-select) The audio distribution system notifies the passengers. These and other features and advantages will be apparent from the detailed description and the accompanying drawings. In the figures and description, the numerals indicate various features, and in the description of the drawings, like numerals indicate similar features. [Embodiment] Referring to FIG. 1, one embodiment of a disclosed wireless communication system is a wireless headset system 10 that includes a transmitter subsystem 12 that communicates with a headset unit 14 via an infrared (IR) or radio frequency (RF) signal 16. The signal 16 is preferably a formatted bit stream containing multi-channel digital audio data, correction data, and code or control data. The material being transmitted and received may be in accordance with industry standards such as the Infrared Data Association or IRDA for ir data communication or compatible with its 106l24.doc 1335154. Transmitter Subsystem 12 The IR Transmitter portion 18 includes an IR Transmitter 2 such as an Infrared Emitter-Like or LED that is received by one or more digital signal processors or DSPs (such as DSP encoders and controllers) The appropriate IR transmission driver 22 for digitizing the audio data of 24, 27, 28 and/or 3) is preferably according to any of the proprietary formats described below with reference to Figures 3, 1 and 16 To format the digital data stream provided by the IR transmitter portion 18. The plurality of such DSp encoding states and controllers can be self-assembled in the signal combiner/multiplexer 32, and the digitized audio data can be applied to the IR transmission driver 22, and the signal combiner/multiplexer 32 can be independently provided. With the IR transmitter section knife 1, 8 'and. Or together with the DSP encoder and controller 24, it is combined with the main controller 26. Main control & 26 may be included in a first audio device, such as an audio device as shown, provided as a stand-alone unit or included in transmitter portion 18. In a system configuration in which the main controller 26 is included in the audio device 34, the audio device 34, the IR transmitter portion 18, and the headset unit can advantageously serve as a single channel wireless headset system from the wireless headset system 1G. The base or input level system, according to the proprietary format described below with reference to Figures 3, 1 and 16 of the text, can be easily upgraded for use as a multi-channel wireless headset system. For purposes of illustration, the audio device 34 is depicted in the figure as containing an audio level % having f Μ two audio sources such as lines " original, 38 and line 2 sources 40, each of which is connected to a stereo channel, such as a stereo channel 1 Stereo processing circuit of circuit 42, the circuit 106124.doc 1335154 is applied to the main controller 26. The audio device 34 thus represents a mono radio and stereo radio, a cd and tape player, a fascination, a disc player, and other types of signals such as computers, televisions, DVD players, and the like. Any audio, video or data source in the audio portion of the electronic device. Whether included as part of an initial installation or later upgrade, a second source of audio such as MP3, WMA or other digital audio format player material can be included in the wireless headset system to provide a second channel stereo Audio signal. In particular, the Mp3 player 44 can be conveniently represented by the line 3 source 48 and the line 4 source 50 being provided to the audio stage 46 of the stereo channel circuit 52. The output of the stereo channel circuit 52 can be line output, speaker output or The headphones are out of the wheel. As shown in Figure i, the output of the stereo channel circuit 52 can be applied to the DSP encoder and controller 27 for combination in a signal combiner/multiplexer included in the main control state 26 of the audio device 34. In this manner, an unmodified conventional stereo audio source such as MP3 player 44 can be added to the wireless headset system 10 by using an additional DSP device such as a DSP encoder and controller 27. Alternatively, the DSP device included in the audio source for other purposes, such as the generation of digitized audio signals, can be programmed to provide the control and formatting required to provide the wireless headset system H) with an additional channel of data. In detail, the new unit attachment 54 is shown as an example of an audio source, and the included DSP has been programmed in ^(d) for the purpose of the specific format described below with reference to FIG. The device 54 generally includes a line 5 source 56 to & line 6 source 58, which is coupled to I06l24.doc via a stereo channel circuit 6〇 for supply to the signal combiner/multiplexer DSP encoder and controller 2 8. 32 ° similarly 'by Eclipse 4 l # using the old adapter of the legacy adaPter 62, can be jiangmeili> # f analog 9 device is included in the wireless headset system 10 Medium 0 will match the old type 5| # aa & A person ° said month is included line 7 class than audio input 64 and line 8 4 than day input / v 66 'both connected to stereo channel circuit 68 for supply (10) Encoder and controller 3〇. It should be noted that any of the sounds 表示 ΐ 表示 表示 表示 线 线 线 可 可 可 对 对 对 对 对 对 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声 立体声Other convenient combinations or use as a more sophisticated audio format such as Home Theater 5" or 7.1 systems, as described in more detail elsewhere herein, any one or more of the turns to line 8 may also be used to transmit non-audio data. As described in FIG. 1, wireless headset system 10 can include one or more digital audio sources and can also include one or more analog audio sources. As illustrated, the transmitter subsystem [2 can include a single digit signal combiner such as a signal combiner/multiplexer 32 that feeds a plurality of DSPs from, for example, Dsp encoders and controllers 24, 27, 28, and 30. The digital signal of each of them. The configuration of one of the transmitter subsystems 12 using analog signal input will be described in more detail below with reference to FIG. 2. Still referring to FIG. 1, the IR transmitter 2 in the IR transmitter section 〇8 is provided with a headphone receiver. The convenient location of the direct Hne of sight path of the IR receiver 70 in unit 14 produces a stream of digits of the data represented as the acknowledgment number. In a home theater application, the IR transmitter 20 can be conveniently positioned at the top of the television 106l24.doc pivot (TVcabmet) with a clear view of the room in which the listener will be located. In the handle application towel, the m-wheeler 2 can be positioned in a dome light in the center of the passenger car temple, or it can be a separate component mounted at a desired and feasible location, such as near a dome light. In a larger area where multiple earphone receiver units u will be driven by the same_trans (four), the 'IR transmitter portion 18' may comprise a plurality of IR transmitters 2, each of which are conveniently positioned to have up to - or more The direct view line L of the headphone receiver unit 14. In other embodiments, an IR transmission repeater may be provided to transfer the digital bit stream transmitted by the single-transmitter 20 over a long distance or around an obstacle, as described elsewhere with reference to FIG. Otherwise the obstructions may block direct line of sight from any one or more of the transmitter 20 to the earphone receiver unit 14. In the Xu Xi application, the output of the IR receiver 7 can be conveniently processed by the IR Receiver Handling 72. In either event, after being received, the signal 16 is then applied to the decoder containing the clock, demultiplexer, and controller for processing to provide a separate digital signal for the stereo channel 丨_4, It will be applied to the DSP 76 for processing. The DSp 76 can conveniently be a multiplexed DSP such that only a single-Dsp is required. Alternatively, a plurality of Dsp units or subunits may be provided. The stereo audio channels 1_4 can be conveniently handled as individual left and right channels' to transmit channels 1L, 2R, 2L, 2R, 3L, 3R, 4L and 4R as shown. It should be noted that, as described above, each of the audio channels can be used as a single single audio or data channel, or as shown herein, and combined to form a plurality of sub-plurality of stereo channels. ). The resulting audio channel is then made available to the switch selector 106124.doc 1335154 7 8 ' for selective application to the headphone headset earphone °

In general, the listener can conveniently use the switch selector 78 to select the stereo channel to apply it to the headset (10). Alternatively, one or more of the stereo channels may be used to provide - or two mono channels, which may be selected by the listener' or, in special cases, automatically selected when a particular event occurs "in the event, equipped The headset is 8 〇 to receive four (or any other number of) stereo channels, but a smaller number of channels are available for transmission by the audio device 34, and the number of actual channels being transmitted can be entered into the signal 16 The digits are in the stream, and the headset can then allow the user to select only those channels that are available (eg, if only two channels are being transmitted, the user will only be able to switch between these two channels (t〇 Ggie) Without having to go through two or more "dead" channels.

For example, instead of a wireless headset for headset 80, switch selector 78 can be configured to allow a listener to select one of three stereo channels, such as channels 1-3, while a stereo channel can be used to provide a monophonic channel, and Channel 411 can be used to provide such as front door monitoring. . Or the audio signal of the baby monitor. For example, in the case of a baby monitor, the switch selector 78 can be configured to automatically change the listener's selection of one of the stereo channels to exceed the preset level in the infant monitor channel. Select baby monitor audio at any time. In addition, switch selector 78 can be configured to automatically return to the stereo channel previously selected by the listener after the audio level in the infant monitor channel no longer exceeds a fixed or adjustable period of time after the preset level. Alternatively, the stereo channel 1_3 can be utilized to provide an audio format such as the 5, 1 format for home and business. In this type of format, the first stereo frequency is used to provide a front stereo sound source located to the left and right of the video being displayed. Similarly, a second stereo channel can be used to provide a rear stereo sound source located at the left and right rear of the listener. The so-called fifth channel can be a mono channel, which provides a monaural sound source at the center position between the left front and the right front stereo. Another mono channel representing the so-called π.ι" channel can conveniently be a low-frequency woofer (: 〇〇 (4) or sub-woofer channel' because its lower position is lower than the audio frequency being presented. The stereo channel 1-4 can be used to provide audio in a so-called 71-audio format. The earphone 80 can conveniently be a pair of earphone speakers that are mounted for convenient positioning of the ear material, especially with A plurality of stereo or mono channel users or a wireless headset system 10 configured for automatic or more selective selection. The headset 8 can be used in this configuration to synthesize audio in a format such as 5, 丨The format is presented to the listener. For example, the central channel of the 5ι format can be synthesized by combining the left front and right front channels. Alternatively, as described below with reference to Figure 5, an alternative configuration of the headset 8 can be used. Providing a better rendition of a particular format by providing a plurality of pairs of earphone speakers mounted in appropriate locations near the listener's ear. For example, Positioning the speaker in the forward position to reproduce the left front and right front channels and synthesizing the center channel, the second pair of speakers can be positioned in the backward position to regenerate the left rear and right rear channels, wherein the mounting is used to a support The head of the speaker has a resonant chamber to provide 106124.doc 14 1335154 for the subwoofer (丨) channel. = Referring again to the figure!, the decoder 74 can also be used to generate a control signal for the external function. For example, The control signal can be input into the digital bit stream transmitted by the device 34 for error checking, power saving, channel selection, and other features as described herein. +. ^ ^ Τ In addition to the audio signal provided to the DSP 76, the decoder 74 can also use & shake # # t +

Jr is used to supply power control signal «2 ' for battery system, +. ^ ^ 》, responding to other premises

Decoding of the code contained in the proprietary format, decoder 74 can provide a signal such as power control signal 82 which maintains battery power from the battery system for wireless ear (4). Thereafter, when the encoded signal is not received within the appropriate time period, the battery modification will no longer be performed (1) to provide an automated auto-shutdown (a.off) feature, which is at the audio signal source or at least formatted. Turn off System 1 when the signal no longer exists to preserve battery power. This feature can be conveniently used in applications where the system 1 is used in a car. When the ignition of the vehicle has been turned off, the power applied to the earphone receiver unit 14 from the battery system 84 is stopped in order to preserve battery life. As discussed elsewhere, the automated auto-shutdown feature can also be invoked when the error check feature detects a predetermined amount of error. Referring now to Figure 2, in an alternate embodiment, the transmitter subsystem " can be configured with a single DSP to digitize the audio signal, the single Dsp being programmed to provide signal combining and format control functions. In particular, the input to the gray transmitter portion 18 can be provided directly by a suitably configured DSp decoder and controller 24 'which is received from the stereo integrated circuit or ICs 42, 52, 60 and 68, respectively. Analog audio signals such as stereo channels i, 2, 3, and 4 are 106l24.doc 15 1335154 as their inputs. As an alternative to using a DSP, any feasible means of function described herein may be used, including any other electronic circuit of "(4) = wc (special application integrated circuit). Easy to understand, throughout this specification The term DSP...., is conveniently used for the stereo channel circuitry in the audio stage 36. The line 1 source 3 8 and the tone input source can be the 9 I stage 36. The vertical mu channel in the MP3 player 44 The stereo input source of circuit 52 can be line 3 source 48 and line 4 source 50 provided by audio stage μ. Similarly 'for stereo add-on in new unit attachment device μ and old adapter 62; The stereo input sources of the body channel circuits 60 and 68 can be line 5 source 56 and line 6 source 58 and line 7 analog audio input μ and line 8 analog afl input 66. What is important is the phonetic, ^ heart combined all Four stereo sources

Providing a signal such as 5·1 of the 杂 坎 _ _ @ A, · Format South, or one or more of these stereo channels can be used as multiple audio channels. Referring now to Figure 3, the format or structure of the IR signal 16 is shown in more detail.汛 Signal 16 forms a one-bit stream containing digital tributaries for digital audio data for four stereo channels and various correction and control data. In one embodiment, signal 16 is an uncompressed stream of digital data having a frequency or rate of at least 1 〇.4 hall. Pulse position modulation (ppM) coding is preferred. By transmitting information or data using the position of the pulse in time or sequence, the code increases the power level of the actually transmitted pulse' without substantially increasing the average power level of the nickname being transmitted. Because in ppM encoding, the same amount of information carried in an uncoded bit stream in a bit in the first power level can be used by a single bit in the four possible bit positions. Transmission (in the case of four pulse position modulation or ppM 4 coding I06124.doc 16 1335154), this power saving occurs. In this way, the power level in a single bit transmitted during pulse position encoding can be twice the level of the uncoded bit stream of the pair of bits, and the average power level is maintained. constant. As shown in FIG. 3, the IR signal 16 includes a plurality of transmitted signals separated from each other by a gap 1 可 which is conveniently only for all of the 16-bit blocks formed by zero (or other locations as herein). Said the package) 86. As described in more detail below with reference to Figure 4, gap 1 〇〇 can be used to transmit clock information for synchronizing the receiver with the clock rate of the transmitter. The transmitted signal or packet 86 can be conveniently divided into two portions, as shown, header portion 87 and data portion 88. The data portion 88 can conveniently include 25 samples of each of the 8 audio streams, the audio streams being included in the four stereo signals being processed. For example, the data portion 88 can include a string 1 〇 3 representing the sampled digital output of the stereo channel , left, and the word ι 〇 4 indicates the sampled digital output of the stereo channel 1 right, followed by the representation of the remaining 3 stereo channels. . This set of 8 digits is described first and represents a single sample, followed by an additional 24 samples of all 8 audio signals. In this example, each data portion 88 contains 4 digits of digits. Provides 25 samples of audio data. If the analog-to-digital or a/d conversion function included in the DSP encoder and controller 24 shown in the drawing is 16 bits, it is used for each channel. The first 8-bit block can therefore represent the high-order portion of each sample, and the second 8-bit block can represent the lower-order portion of the sample. Referring now also to Figure 1, if the switch selector 78 is operated Selecting a specific mono or stereo channel such as channel 3 left, you can use the known order of the samples to reduce the energy budget of the earphone receiver unit 14. The details are 'only in channel 3'. The time required to select the selected audio or stereo channel to the left can perform a digital analog (D/A) conversion during each data portion 88. In this way, since not all 8 mono channels or 4 stereo channels are performed D/A conversion, so it can be essentially Reduce the power consumed by D/A conversion (usually the energy or the substantial part of the battery system budget), thereby extending battery and / or battery charging life. - - .......... - ~. - Only, η呷 side of the river

The organization of the data block 92 described herein is readily altered. Referring specifically to Figure 3, in one embodiment, each transmitted packet 86 can include a header portion 87 positioned prior to the data portion 88. Each header portion 87 can include one or more correction portions 101 and a control code portion 102. In general, the correction portion 101 can provide timing data, signal magnitude data, volume and/or frequency data, and, for example, control information regarding audio formats or other acoustic information. Control code portion 102 can include information for error detection and/or correction, automated channel selection, automated power down, and other features of system 10. Another preferred embodiment is described with reference to Figure 12 elsewhere in the text. In a particular installation, the desired acoustic or actual acoustic characteristics of the location of the listener's composite transmitter subsystem η may be considered, or a particular concert hall or other may be represented in the calibration data: = position It contains a variety of sound sources or speakers to the azimuth and separation of the listener, so by adjusting the interface between the channels • crying -, ^ Τ < late to use the earphones About the test. Look forward to the appropriate acoustic experience of the Japanese music. The " technique is similar to the technique used to create a special type of audio signal, such as the 5 dry type, 106l24.doc 1335154. Alternatively, the acoustic barrier can be reduced by properly using the correction data to penetrate the ear 1 E, such as the high pitch of the engine, or the low-pitched ruff of the aircraft noise. The composite portion of the composite or sound modification M positive portion (8) or the m signal in the m signal 16 ==!, and/or (as shown in FIG. 1) is controlled or controlled by the listener by appropriate operation of the switch 78. Adjustment. Similarly, the acoustics of headphones 80 of different types or styles can be enhanced or compensated. Conventional earphone units typically include a pair of individual speakers, such as left ear speaker 81 and right ear speaker 83 as shown in FIG. A more complex version of the headset 8, such as that described in more detail below with reference to Figure 5, can benefit from the correction material contained in the correction portion %. As described on section t, the technique for adjusting the user's acoustic experience may be assisted by correcting the data in the 'knife (8) and/or by operating the switch selector 78, and also by the control code portion 丨〇2. The protection of the "management to control, adjust or shadow J" material (10) can also be used for control, other operations such as the battery system 84 white #λ μ μ l & automatic shutdown function, error detection and / Or correct the power and automation available channel selection. Eight: See Fig. 4, Fig. 5 and Fig. 丨, which can be processed via the decoder 7 tin, such as the data portion 88,

_ . . I of the 1R is conveniently used in DSP for conversion to analog audio data. The destination in the header portion π is destined for inclusion in the decoder 74 or further processed by the decoding circuit. In order to be used in the auto-shutdown function, the portion of the IR data processed by the IR receive signal processor 72 including the control code portion (10) I06I24.doc 19 1335154 can be applied to the code detector 106 to detect the predetermined program. The presence of a code or other unique identifier. As soon as the appropriate code is detected, the delay counter 1 〇 8 can be set to a predetermined delay such as 30 seconds. Upon receipt of another detection of the selected code, the delay counter 108 can then be reset to a predetermined delay. The predetermined delay expires, that is, after the predetermined delay expires and the pre-selected automatic shutdown control block is recognized, the signal can be transmitted to the interrupt switch (kU1 switch) n〇, which then sends the power control signal 8 2 to the battery. System 8 4 closes the earphone unit 14 ° As described elsewhere, system 10 can incorporate an error detection method. In this implementation, the auto-shutdown function can also be configured to detect a predetermined number of stones

In operation, the above procedure is used to turn off the battery power of the headset unit 14 unless the appropriate code signal has been recognized within the first 6G seconds. The auto-shutdown function can therefore be configured to turn off battery power after 60 seconds (or any other predetermined period of time) after stopping the accurate gray data transmission by the transmitter subsystem 12. Turn off battery power after the type or error. This method provides an advantageous automatic: function 'which can be used after a predetermined period of time after turning off the radio or other transmitter in the car (possibly by turning off the ignition of the car), or / in addition, when excessive transmission/reception errors have been The audio performance is downgraded to a non-reconcilable % of the day, the headset is turned off and the headset battery power is saved. The headphone unit can also be configured to power down (P〇w down) only when too many errors are detected, where all β, scoops are stopped, and at predetermined intervals (eg: /, restart 'to receive The predetermined number of seals (10) and check the errors in these received packages. Headphones single open, good ^, At early 14 can be further configured to receive without error I06124.doc -20* 1335154 = lower than the pre-selected number The pre-selected number of errors begins with a full, constant operation. In a favorable nucleus, 'if the required power is the minimum acceptable, the second switch 17 can also be used for maintenance. The power of the 1 r receive signal, the delay counter 108, and the code detector (10) is automatically turned on (aut.') by the same type. _Starting the appropriate signal source as part of the transmitter 12 can detect The signal to the predetermined code = power control signal 82 is sent to the battery system 84, and the system that is still not powered by the earphones is received. Referring again to Figures 1 and 4, one of the important functions of maintaining the system 10 is important. ^ is to maintain synchronization between operations, especially It is the synchronization between the sampling and/or A/D operation of the transmitter subsystem 12 and the decoding and related operations of the earphone receiver unit 14. Although it can be maintained in several different ways, it has been found to be particularly advantageous for use. In a system comprising a plurality of battery powered remote units or receiver units, such as earphone unit (4), such as system 1 ,, the timing of operation of the headphone receiver unit 14 is provided by the transmitter subunit 12 and includes The timing information in the IR signal 16 is synchronized to ensure accurate synchronization of multiple receiver units that can be replaced or moved between cars. Still referring to Figures 4 and 5, the self-IR receiving signal processor 72 will The data is applied to the sync detector H2. The sync detector 112 can conveniently refer to the gap 100 by, for example, detecting the trailing edge of the data portion 88 of the transmitted packet 86 t, and appropriately preselecting After the delay or gap, the front edge of the header portion 87 of the subsequently transmitted packet 86 is detected. Alternatively, the synchronization predator η] I06l24.doc 2! 丄 335154 can be combined with respect to the trailing edge, the gap length and/or such as Or a simple variant of the synchronous signal detection performed by the information of the desired data content and the gap and/or the actual or desired length of the front edge of the 0 or its contents. - Detecting the appropriate synchronization data, synchronous detection The device 112 can then maintain appropriate clock information for the headphone receiver unit 14 by rushing the pulse, and also by updating the phase locked loop circuit such as the PLL 114 (or instead of holding the synchronization. The PLL 114 can then be used). The output is applied to Dsp% for the _^ column to synchronize the decoding and/or sampling of the data by controlling the clock rate of the D/A conversion function of the DSP 76. The resulting synchronized signal is then applied by switch selector 78 to earphone 8 。. Without this synchronization, the audio quality of the sound produced by the earphone (9) can be severely degraded. The other functions provided by the decoding benefit 74 include updating the operation of the earphone receiver unit 14 and the code detector 106 - recognizing the appropriate update code 'code detector 1 〇 6 The data from one or more of the data portions 88 of the subsequently transmitted 2 signal or packet 86 is applied to appropriate memory in the earphone receiver, such as rewritable memory (1). (For example, the code thief 74 can use the data stored in the memory 116 to control subsequent operations of the receiver unit 14. The code update function described above with reference to Figure 4 can be used to modify the machine receiver unit 14' for The operation of changing the mode 1 new format of the processing of the poor materials in the plurality of channel formats (such as the two: only), the use may be to automatically select various audio channels or age-appropriate formats to control the provision to For example, in the museum, the information (10) can be provided in the museum as "or multiple exhibits I06124.doc -22. ^35154." In the audio format, the specific earphone receiver unit 14 is provided. Before the museum visitors can rent it, they can use the updated format to program the earphones to provide the appropriate age for the listeners who will use the headphone unit. —] Machine q, ah, from the audio service provided by the wish. The specific headset can be programmed to automatically start an audio signal that is sufficient to indicate the proximity to the exhibit to be described. The headset is programmed to provide audio only for exhibits in a collection, and other headsets can be programmed to receive all relevant audio. This stylization or update can be easily performed for each of the headset's coarse or other allocations. Another (4) update or stylization feature is to allow a larger number of deafs to be reprogrammed at the same time. For example, 'continue to make (4) an instance of the library, paging or other notification system can be implemented with an update function to enable Choice ('The birthplace will close the museum (such as the closing time) or declare an emergency (such as in the fire and right m 4 (four), the body is called or notified to the museum administrator with the selected code in the headset or all that In this way, the straw is controlled to switch the produced audio instead of changing the soil... &&&&&&&&&&&&&&&&&&&&&&&&&&&& Another example of the use of electrophysical or paging upgrades may be to change the code of the prepared operation to prevent theft or damage to the deafness. It is possible to warn the listener or other people from all over the place - through the exit of the operation, pretending or smashing the earphones to prevent I06l24.doc -23· 1335154 liters, 'and the other month b The purpose is to allow the sale or provision of a headset unit for use on a level and later upgrade to a higher level. As a simple example, I assign a multi-channel headset without the coding required to perform multi-channel operation. Single channel operation is good, but it can be temporarily or permanently upgraded for higher performance at a reasonable cost. Referring now to Figure 5, a top view and a front view of a multi-channel headset ιι8 for use with system 10 will be described. The left earphone system 12A and the right earphone system 122 are mounted on a headband 124 for positioning the earphones on the listener's head. Each of the headphone systems includes a plurality of speakers, such as the front speaker 126, the center speaker 128, and the rear speaker 13A on the right earphone system 122, as with the active aperture 132 and the active audio path 134. Controlling the distance between the speakers 126, (2) and (3) in the earphones to the effective aperture 132 along the effective audio path 134 (aPParem diStance) to provide the desired audio experience, so that the azimuth direction and each of the sound sources The distance between the benefit and the listener is consistent with the desired experience. For example, the audio provided by speakers 126 and 128 can be provided at a slightly different time "with different emphasis on the front and rear edges of the sound so that the spatial relationship between the sound sources can be synthesized to enable the home theater The effect of formatting performance is doubled. Although the spatial relationship for certain types of sounds (such as high-frequency ticks) can be more easily synthesized than the spatial relationship of other types of sounds, the spatial sound relationship in the headphones is synthesized. The effect is amazing' and it provides an enhanced audio experience. In addition to the above mentioned speakers for stereo and multi-channel stereo format t, it is advantageous to have a low frequency, non-directional single source (such as subwoofer I06l24.doc -24- 1335154 丨 34) is mounted to the headband 124 to enhance the user's audio experience. Referring now to Figure 6, the audio transmission device 500 includes four digitized audio input streams 602, 603, 604, 605. A single DSP 600, the digitized audio input streams 602, 603, 604, 605 are multiplexed into two signals 610, 612 by two multiplexers 606, 608 for input. Connected to the serial port 6i3, 615 of the dsp 600 direct memory access (!) ^ 8) buffer DMA0 614 and DMA 1 616. Located in (for example) the audio module shown in Figure 7. The analog digital converters (ADCs) 618, 619, 620, 621 of 622, 623, 624, 625 can digitize the audio streams 602-605. The audio device 34 and the MP3 player 44 of FIG. 1 are the audio modules. Typical Example As described above with reference to Figure 5, audio can be used using multiple analog inputs provided to a single aDC and multiple digital inputs directly to multiplexers such as multiplexers 6〇6, 6〇8 Referring to Figure 7, the data multiplexing circuit of the audio transmission device 500 combines the two channels of the digitized data 602, 603 and 604, 605 into a sequence of data k 6 1 0 6 12. The combination is used for two different A phased digital audio pair (two stereo pairs) 610, 612 data stream time slots (S10t) to generate a singular digital data stream 633. Other portions of the audio module are described in more detail elsewhere herein. / Right timing mechanism is configured to make two stereo channels (four A data line is shared with the audio input line. The 90 degree phase shift data is used to multiplex the outputs 602, 603 and 604, 005 of the in-phase ADCs 618, 620 and 619, 621. The higher order channels ( Channels 3 and 4) are 9 degrees out of phase with the lower channel (channels 丨 and 2). This allows two channel pairs (channel 1 left and right and channel 3 left and right) to share a single data line. 106124.doc •25- 1335154 Digital audio data is input to the DSP 600. The odd-numbered channels are on the same sequence line, and the even-numbered channels are on the same sequence line. The clock and pulse phase phasing circuit 628 provides input data line selection for the multiplexers 606, 608. Continuing to refer to Figure 7 'DSP 600 and multiplexers 606, 608 - may be provided in encoder 626 within transmitter 500. The encoder 626 receives four digitized audio inputs 602, 603, 604, 605 from the audio modules 622, 623, 624, 625 and uses the line driver 63 1 to transmit the digitized sequence data stream 633 to the IR transmitter module 634. For transmission to the headset 80. The encoder 626 also includes a clock and pulse phase phasing circuit 628, a boot/private memory 630, and a power source 632. The DSP 600 acts as a central control for the encoder 626 circuit' which includes control of all inputs and outputs to the audio transmission device 5'. A clocking divider provided in timing circuit 628 is enabled by DSP 600 to provide signals for driving the clock for any audio module (e.g., ADC) and audio data to the DSP. The DSP 600 combines the audio data 6 10, 6 12 from two sequence sources (multiplexers 6〇6, 6〇8) and formats the audio data into a single sequence data stream 633 of the data packet, which is provided to the line. The driver 63 1 is sent to the IR transmitter 634. In one embodiment, line driver 63 1 can be a differential line driver having an RS485 transceiver, and an inverter can be used to invert and buffer data from DSP 600. The DSP 600 uses the base 10.24 MHz clock of the timing circuit 628 multiplied by the internal phase locked loop (PLL) of the DSP. In one embodiment, the DSP clock speed is 8X MHz, but this speed can be reduced to reduce the overall power consumption consumed by the audio transmission device 5. I06124.doc -26-Continue to refer to Figure 7 'Start memory 630 during shutdown (including software that controls DSP) DSP 600 memory memory ^ 8 bit sequence electronic erasable programmable read only memory (EEPROM) Can be used as boot memory 630. Once the DSP is powered up, it can be programmed into its startup program to search for external 5 memory circuits for loading and execution. The boot memory 63 is connected to the multi-channel buffer sequence 埠6l5 (McBSP1) of the DSP 600. In an alternate embodiment, the DSP software can be provided in DSP read only memory (ROM). Referring now to Figure 8, clock and pulse phase phasing circuit 628 produces all of the clocks required by encoder 626 and audio modules 622, 623, 624, 625. DSP, audio data transmission, and audio digitization require four separate clocks. These clocks are the main clock 660, the sequence clock 66 1 , the left/right clock 662, and the multiplexer clock 663. The multiplexer 6〇6, 608, as previously described with reference to Figure 6, also requires clock positioning to multiplex the digitized audio input streams 〇2, 603, 604, 605. The main day clock 660 is used to drive the main synchronization clock signal for the audio digitization module and dsp. The primary clock signal 660 is generated from a stand-alone crystal oscillator circuit 660 and has a buffered output 661. The main clock frequency is 1 0.24 MHz' which allows the autonomous clock to get the sequence clock and the left/right clock. Each individual bit of the digitized audio input streams 602, 603, 604, 605 from the audio modules 622, 623, 624, 625 is clocked into the DSP 600 using a sequence clock. A quarter-clock divider (667ne f〇unh clock divider) 667 is used to generate a timing signal having a frequency of 2.56 MHz, thereby obtaining a sequence clock signal 661 from the autonomous clock. The left and right data blocks I06124.doc • 27-1335154 generated by the left/right clock pair from the multiplexer 6〇6, 608 for input to the digital audio streams 61〇, 612 of the DSP 600 are used. Ten percent and generate DSP frame synchronization. The clock divider 667 is used to generate a signal that is 256 times slower than the primary clock, thereby obtaining a left/right clock signal 662 from the ± clock. The clock phasing circuit 668 separates the left/right clock into two phases by providing a 9-degree phase shift for one of the left/right clocks. This allows two of the four tone groups 622, 623, 624, 625 to produce a 9-degree phase shift output. The 90 degree phase shift data on the line is used to multiplex the output of the in-phase left/right clock audio module output. Each left/right clock phase acts as an independent frame synchronization for the digitized audio input streams 6〇2, 6〇3, 604, 605 from the audio module” and 622 623, 624, 625. The multiplexer clock 663 triggers the selected input data line to combine the digital audio packets from the digitized audio input streams 602, 603, 6〇4, 0〇5 of the audio modules 622, 623, 624, 625. The multiplexer clock signal 663 is also generated by the clock divider 667. The Dsp clock signal is used to drive the DSP 600, and the main clock signal 660 is converted to a low level as required by the DSp by the buffer/voltage converter 669. A voltage (eg, from 3 3 ^^ to 18 V) is generated by changing the base crystal oscillator frequency (ie, the 9.216 MHz base clock for the 40 KHz left/right clock can be changed to 44.1 KHz left/right clock. 2896 MHz base clock), other timing mechanisms can be used. Power supply 632 produces all of the voltages required by encoder 626. In one embodiment, encoder power supply 632 is acceptable. +10 VDC to +18 VDC input voltage range. Four independent voltages can be used on the transmitter backplane; Input voltage (typically +12 VDC), +5 VDC, +3.3 VDC, and +1.8 VDC. Transient protection can be used to prevent any thirst or any transients on the input power line. A voltage supervisor can also be used to maintain the stability of the DSP 600. An unregulated input voltage is used as the source voltage for +5 VDC. The regulated +5 DVC is used to power the IR transmitter module 634. Groups 622, 623, 624, and 625 use +5 VDC for input audio protection and input audio level bias. IR transmitter 634 uses +5 VDC for bias control and IR drive circuit 65 0. Adjusted +3.3 VDC The logic is supplied to the DSP 600 and encoder 626 and is also provided to the audio module for its ADC. The +3.3 VDC self-regulated +5 VDC supply voltage is generated and monitored by the voltage supervisor. Reduced to less than 10% of the +3.3 VDC supply, the voltage supervisor keeps the DSP 600 in reset until the voltage has increased above +3.0 VDC and has elapsed, such as 200 ms. Adjusted +1.8 VDC Powering the DSP core of encoder 626 and self-adjusting + 3.3 VDC power supply voltage generation. Referring now to Figure 9, in one embodiment, audio modules 622, 623, 624 '625) 1 and other digital 4-tone Ifl input L 602, 603, 604, 605 can be provided to the DSP. 600. The audio module can be an external or internal plug-in module of the encoder 626 or can be incorporated into the encoder. In an embodiment providing four audio channels, four audio modules can be used with the transmitter backplane. Each audio module, such as audio module 622 shown in Figure 9, accepts a pair of stereo audio pairs (left and right) of inputs 63, 639. Power and main clock, sequence clock and left/right clock are all supplied by encoder 626. Signal conditioning and input protection circuitry can be used to prepare signals 63 8 and 639 prior to digitization and to protect the input circuitry from transients. The signals 638, 639 can be adjusted independently. The direct current (DC) bias circuit 640 sets the 068, 639, -29, 1335, 154, 639 to the mid-range of the five volt supply to allow the input signal to be symmetrical on the DC dust. In this way, any clipping that occurs will occur equally on each positive and negative peak. The input surge protection circuit 641 can be used to protect the input circuit from transients and overvoltage conditions. Two of the signal conditioning and input protection circuits 64〇 back-to-back diodes provide transient protection to shunt any south voltage to the power supply and to the ground. The line level input can be limited to two volts, or some other feasible value (peak to peak). A low pass chopper can be provided to act as a prefilter to increase the dead band attenuation of the D/A internal filter. In one embodiment, each analog input audio channel frequency is 20 to 18 KHz, and the low pass filter 642 has a corner frequency of 14 〇 κ Ηζ or more to minimize its effect on the bandpass of the audio input. Continuing to refer to Figure 9', ADC 643 is used to digitize the left and right analog inputs 63 = 9 digits. The ADC 643 outputs a single sequence digital data stream 602 containing left and right channels to the encoder 626. The timing of the ADC 643 is generated using a primary clock of 1 〇 24 MHz, and the data from the ADC is clocked using a 2.6 M sequence data clock. Use the 4 〇 KHz left/right clock to frame the data into different audio samples. Each left and right analog sample can be a 16-bit value. Referring now to Figure 1, the ir transmitter or module 634 converts the digital data stream 633 to an IR (infrared) transmission signal 16. ppM (Pulse Position Modulation) coding is used to increase transmitter power by using bit position values. The ir transmitter 634 packs the 3-wire receiving 650, which is used to receive the differential RS485 signal from the line driver 63 633 to convert it into a single-ended data stream. The data stream is then buffered and passed to IINF24.doc -30. 1335154 to an infrared bias and control circuit 650 that drives the (e) light-emitting diode (LED) of the emitter 652 and Control the amount of energy transferred. The IR transmitter 634 includes four infrared bias and control circuits 650 and four individual transmitters 652, each having a duty cycle of 25 〇/〇. When a zero bit is sensed in data stream 633, the bias control maintains the (etc.) IR emitter in a very low on state to allow direct dipoles when a positive pulse (one bit) is sensed The body drive immediately applies the full power to the IR emitter diode. The sense resistor is used to monitor the amount of current supplied to the diode so that when the emitter diode driver is pulsed, the bias The pressure control maintains a constant current flowing through the diode. The IR transmitter 652 converts the digital data stream 633 into pulses of infrared energy using any feasible number of IR emitter diodes (e.g., four per IR emitter). Due to the physical characteristics of the diode, the bandwidth of the electrical data pulse is primarily limited by the fundamental frequency of the square wave pulse applied to the IR emitter diode. In one embodiment, the IR energy can be focused at a center wavelength of 87 〇 nM. Encoder 626 supplies all of the power to IR transmitter module 634. +5 VDC is used for the driver and bias control circuit 65〇. In the embodiment, the encoder 626 supplies the PPM encoded digital data stream 633 to the ir transmitter 634 at a rate of 11.52 Mb/s. Referring now to Figure 11' for use? ^88?613, 615, and 01^8, 614, 616 to independently gather data of four stereo (eight mono) channels. When any of the McBSPs has received the complete 16-bit data block, each DMA transfers the data block to the two hold buffers 670, 671 (for DMA1 616) or 672 for a total of four hold buffers. , 673 (for DMA0 I06124.doc • 31 · 1335154 614). Each river (; 1 > 613, 615 uses its own 1)] ^ eight 614, 616 and buffer pairs 672 / 673, 670 / 671 to move and store the digital data. While filling a buffer, the DSP 600 processes the complementary buffer β each buffer (for a total of 1 16-bit samples) to store twenty-five left data samples from two different ADCs and twenty-five A sample of the right data. Each block received by the parent-MBBSP increments the memory address of each DMA. When each buffer is full, an interrupt is sent from each DMA to the DSP 600. The DSP 600 resets the DMA address and refills the other buffers with a new set of data. Repeat this process continuously. The DSP 600 produces two transport buffers that are all the size of the fully transmitted packet 86. In one embodiment, 45 ( (16-bit) blocks are used in each packet (as discussed more fully below). ^ When a packet 86 is first initialized, a static header/trailer value is inserted. In the packet. For the initial packet and subsequent packets, the user ID/special selection/channel state (USC) value of the control block 96' data offset, dynamic header value, and channel audio data are added to each packet. Preferably, the usc value calculated from the previously encapsulated audio data is used. The audio data is PPM encoded and placed in the data block packet. Once a predetermined number (e.g., twenty-five) of samples from each channel has been processed, the packet 86 is complete. When the DSP 600 completely fills one of the output buffers, it is enabled to transmit a DMA (DMA2). The DMA 2 then passes the information in the filled output buffer to the sequence 埠 (MeBSPO) of the transmission device 500. The MeBSPO in turn sends the sequence data 033 to the line driver 63 i for transmission to the IR transmitter. Once the output DMA and McBSP are activated, they continue to operate. At I06l24.doc -32· 1335154 1335154 ♦ 搴 While DSP 600 fills one of these buffers, dMA2 empties another buffer and sends it to McBSPO. Synchronize via input data. The DSP 600 processes the interrupts of the DMA 614, 616, monitors the special selection and channel status information as described elsewhere herein, constructs each individual signal (or transmission packet) 86, and combines and modulates the audio data and packet information. . The DMA interrupt is used to inform the DSP 6 that the input audio buffer is full. At this point, the DSP reconfigures each DMA to begin filling the alternate hold buffer and then begins processing the "full" hold buffer. No interrupt is used to output on the DMA. Once the output buffer is full, the output dma is started to begin filling another buffer. As described more fully elsewhere herein, special selection information can be used to indicate whether the audio transmission is being used in a configurable configuration and can be provided via a hardware switch or can be hard coded ((4)(3)(d))) . Special selections can include, but are not limited to, "and" surround processing. In one embodiment, a state in which four inflamed persons are used is not particularly selected. The four-digit unit will provide four special users who can misplace the stickers, go to the switch, or choose five or fifteen hard codes. The normal operation of the headset can be a reserved selection indicating W_h. When using the switch selection, the fifteen special selections - or the minimum of the multiples will be used for additional selections (meaning gp, if two switches are used, only four special selections η 4 are used. Right use four For the switch, there is no extra symbol, but it can be used for example.

The face of the 'one y吏 with a hardware switch to trigger the gift of 6 〇〇 ΗΡΙ (host 蟑 立 立 立 立 ΗΡΙ ΗΡΙ ΗΡΙ ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( And in special (four) (four). DSP 6GG can read HPIi car beads, select the appropriate bit in the selection. H status information can be used to indicate which stereo channel (left and channel are in the middle. The amplitude of the digital audio data can determine the stereo effect b α is not active. If no one is detected on the stereo channel? 'Bei 11 can mark the channel status as off in the outgoing packet and the right to sense the mid-range m on the stereo channel. The channel status flag is on (1). In an embodiment, in order to determine whether the stereo channel is active, the absolute value for each of the four stereo channel data samples is accumulated "and the per-left channel is accumulated and accumulated. Twenty-five samples per channel (one: the number of individual channel data samples). ^ If the sum of stereo channel samples exceeds the audio threshold, the channel status can be marked as (4). The total number of sound channel samples is not Overtone limits, which are marked as non-active t. Four bits (one bit for each channel) can be used to indicate the stereo channel status and preferably update each time a packet is generated. Referring to Figure 12, an embodiment for encoding four channels as individual signals or transmission packets 86 is shown dividing each signal 86 into a header portion 87 and a data portion 88. The header portion 87 is provided for the receiver 7 〇 (described in detail herein below) sensing, synchronizing, and verifying all information about the initiation of a valid transmission packet %. In an embodiment, the header portion includes a pre-coded preamble value. , terminal value and gap value, and further include the PP Μ coded product identification code and data offset value. I06l24.doc -34. 1335154 Input =:::: Receive - Sensing header part - and pass as No... Static value. Zero-sensing sensing gap. & Equivalent... Contains seven leading 70 receivers 700 to identify the beginning of the gap period. The second 90th of the gap 90 and the person + ^ 焱 尬邛For 3 there are alternating - and zero bit touch ^. This bit 7〇〇 used by the receiver so that when the pulse in the gap period

The recovery circuit is stable. The second portion of the gap/gap is a homogenous gap containing three zeros. This 4-bit is employed by the receiver to mark the beginning of each transmission packet %. The preamble ugly can be grouped by a predetermined number of equal values (e.g., AAAA hexadecimal), so that the transmitter 5 (9) is used to synchronize the receiver 700. The preamble consists of two independent 16-bit (double word) values and is used by receiver 700 to identify the beginning of each packet %. The preamble 1 block 89 is also used to assist in stabilizing the clock recovery circuit. The preamble is not PPM encoded and can be a static value that never changes. The preamble I-group is preferably placed at the beginning of the packet 86, and the preamble 2-word group 91 preferably follows the gap 90. The preamble blocks i and 2 contain alternating ones and zeros (AAAAh). The first "-" bit of the preamble 2 block 91 can signal the beginning of the particular packet 86. Following the preamble 2 block 91 is the predetermined code or unique identification code (PID) 92. It may be selected to uniquely identify the transmitter 5〇0 to the receiver 700. The PID 92 is preferably PPM encoded and is a static value that does not change. For example, this feature can be used to prepare only for use in a car or limited to Headphones for use with specific I06l24.doc 05-model models (make) or with specific models of transmitters. Therefore, for headsets used in museums where visitors rent headphones, the receivers in the headphones can be stylized It is known only when it detects the unique identification code (1) transmitted only by the transmitter installed in the museum. This (4) depends on the visitor W headphones, because the headphones are in the museum: nowhere at all The original equipment manufacturer (嶋) can use this feature in 7 steps to control the quality of the aftermarket parts. For example, the vehicle manufacturer or the car audio (4) system manufacturer can install the transmitter in its equipment, but Control by it The only m permission (__)/points that are transmitted to the manufacturer of their accessories (headphones, speakers, etc.) that meet the specific needs of 〇EM are followed by the data offset value (d〇)93, followed by Following the data offset value 93 is the offset portion 94', the final portion of the header portion 87. The offset value 93 indicates the length of the offset portion 94 and the data filler portion 97 (i.e., where the number of blocks is, And may be a constant and equal value in each transmitted signal or packet 86, or may be dynamically changed randomly or according to a predetermined mechanism. The length of the moving part helps to avoid solidification

疋Frequency transmission and/or connection &###I I is also used to reduce the noise of the cluster. Offset

Sub-94 and data padding Qiu Ba Q-port P-knife 97 - preferably containing the same number of characters (for example, 30) 'and then ready for collection - and then Yun Hui will randomly place the tribute part in a specific packet 8 6 'and for all the captive sentences — the overall length of the standard. The offset portion 94 is used to separate the unique PID 92, from Becco #88, and may contain various materials. This information can be used without any use and therefore contains all random values or values all zeros to be discarded or ignored by the receiver 700. Alternatively, the offset portion 94 106l24.doc • 36 · 1335154 may contain information for error detection and/or error correction, such as values indicative of the characteristics of the audio material or the audio material contained in the data portion 88.形成 The data portion 8 is formed by interleaving the data block 95 and the control block 96. In her usual example, for a total of 8 ppM-encoded blocks, the data block 95 consists of 5 samples of 4 channels of the 16-bit value (1 block) of the left and right audio information. Data block 95 can be composed of any other number of words. In addition, the data blocks in each signal % transmitted by the transmitter 5 do not have to contain an equal number of blocks, but may each contain a number of words that are random or vary according to the pre-call mechanism. The continuous data block 95 in a single package 86 can also vary in length. In addition, the continuous packet may contain a different number of data blocks 95 in its data portion 88. In the header block 87 of each packet "such as in an offset portion call" may include an indicator indicating, for example, the number of data blocks and the number of blocks contained in each data block, to The enabling transmitter 700 appropriately processes the data contained in each packet %. The control block 96 follows each of the blocks 95 and includes the aforementioned special selection and channel status information in the __ embodiment, and Pre-programmed code or unique identifier user ID. As described elsewhere herein, the user (1) may be a value for error detection, such as by comparing the user ID value contained in the header 87 with Controls the value of each successive user (1) encountered in the block %. If the value of the user (1) through the packet 86 is not the same, the packet can be discarded as an error packet and a specific number has been received. After the continuous error seal i, the audio output of the earphone can be removed. User I can further distinguish between various transfer devices 5〇〇, so that, for example, the process 106124.doc • 37· 1335154 In order to be installed in a car of a specific manufacturer The receiver used will not be compatible with any other manufacturer's car or transmission device in a building such as a museum or private home (as further elaborated elsewhere herein). It can be used to control the channel selection switch on the receiver 700 to allow only the selection of the "personal channel, and to avoid processing each packet to be associated with the data block associated with the channel by powering down the receiving HDSP. Minimize power consumption (as described more fully elsewhere in this specification). At the end of data section 88 is the end of the data pad 97 and the terminal block or terminal block (TRM) 98. 99. The TRM 98 preferably has a (four)-bit (single-word) value and can be used by the receiver 7 to allow a small amount of time to reconfigure the McBSP parameters and prepare a new packet 86. trm% can also be used to assist in During the GAP 90 cycle, the receiver 7 〇〇 hardware clock recovery is stable, and as described elsewhere, it may also contain information for error detection and/or correction. The TRM 98 is preferably not ppM encoded. And preferably contains alternating And the static value of zero (AAAAh). Referring now to Figure 13 'receiver device or headphone unit 7〇0 has two independent 4 knives' to make the omnidirectionality of reception (〇mni_direCtiVjty) possible and to use the receiver The circuit is more evenly distributed over the entire housing of the earphone 8. The main part of the side receiver is the primary receiver 7〇2. The secondary module is the secondary receiver 704. The primary receiver 702 and the secondary receiver 704 Each includes an IR receiver preamplifier. In an embodiment, the primary receiver 702 can contain the body of the receiver circuit and is not in the primary receiver IR receiver due to the orientation or position of the listener wearing the headset 80. I06124.doc -38- 1335154 of the transmitted IR signal The secondary receiver 702 can be used as a supplemental preamplifier for the IR signal 丨6. Referring to Figure 14 'primary receiver 702 includes receiver DSP 71 汛, 汛 receiver / AGC 714, data clock recovery circuit 716, D/A converter (DAC) and audio amplifier circuit 722, user selectable switches and Indicator control circuit 718, boot/program memory 73A, and power and voltage supervisor circuit 740. The DSP 710 acts as a central control for the receiver 7 〇〇 circuit and controls all inputs and outputs of the receiver. The DSP 7 10 receives the IR data packet from the single sequence stream 712 of the IR Receiver ® 714. The beginning of IR data stream 712 generates frame synchronization for incoming data packets. The clock recovery circuit 716 generates an IR data clock for sampling the IR data. The DSp sequence 埠 completes the timing for the 丨6-bit το DAC. The primary clock for the 16-bit d/a converter is generated from the extra sequence. The external switch and indicator 719 can include a switch to allow the user to access functions such as selecting a desired channel and adjusting the volume of the audio. The lEE) can be provided. DSP 7 1 0 will drive it to indicate whether to power the receiver and the selected channel. Control circuit 718 interfaces external switches and indicators 719 and DSP 710 to provide inputs from the switches to Dsp and to control the indicators as specified by the DSP. The base timing for the DSP 710 can be generated from the clock recovery circuit 71. By 〇5? Internal? 1^ multiplies the input clock to 〇8?710. The 〇8? clock speed can be 8X MHz and can be reduced to minimize the overall power consumption consumed by the receiver 7. The DSP 71 0 can also be used to receive the switching power supply (switching p〇wer I06l24.doc Ί〇 1335154 supply) on the 704 via the transistor and the flip-flop. If the software does not detect a valid signal for a specified amount of time, then the DSP can decouple the switched mode power supply and remove power from the receiver as specifically described elsewhere herein. Referring now to Figure 15, an IR receiver/AGC 714 is used to convert and amplify the infrared data contained in the received signal 16. The ir receiver/AGC 7 14 also controls the amplification and generates a digital data stream 712 for the DSP 710 and the data clock recovery circuit 716. The available distance of the IR receiver depends on variables such as the power of the transmitter 500 and the environmental illumination conditions. In one embodiment, the overall gain of the IR receiver / AGC 7 14 can be about 70 dB. With continued reference to Figure 15, the IR receiver/AGC circuit 714 includes a preamplifier 770, a final amplifier 77 1 , a data level (or data divider) 772, and an AGC (Automatic Gain Control) circuit 773. The IR preamplifier 770 converts the optical signal 16 into an electrical signal and provides a first stage amplification. The ir preamplifier contains two independent amplifiers. The first amplifier includes four IR photodetector diodes and a transimpedance amplifier. In one embodiment, combining a wide viewing angle photodiode produces an angle that is better than 12 degrees of horizontal axis reception and 180 degrees of vertical axis reception. The daylight filter can be incorporated into the photodetector diode, which, together with the inductive transimpedance amplifier feedback, minimizes the DC bias effect of the ambient illumination. When the signal 16 is transmitted, a current pulse proportional to the intensity of the IR signal is generated in the photodetector body. The strength of the received IR signal depends on the distance from the transmitted IR source. The current pulse from the photodiode is applied directly to the transimpedance amplifier. The transimpedance amplifier senses the rising and falling edges of the current pulse from the photodetector diode and converts each pulse into a voltage. The second amplifier of the loop is a 106l24.doc -40-1335154 basic voltage amplifier. The AGC circuit 773 controls the output of the second stage. The third amplifier is also the basic voltage amplifier. The output of the third stage of preamplifier 770 is fed with the inputs of final amplification stage 771 and AGC 773. The final amplification stage 771 is used to further increase the gain of the received IR signal 16, and also acts as a combiner for the left earphone (Headphone - Left) and right earphone preamplifiers 75 0, 770. The final amplifier 771 contains two basic voltage amplifiers. Each of the two levels of amplification increases the gain of the received IR signal. As described below, the second stage of AGC 773 also controls the input signal to the final amplifier. The output of the final amplification stage is fed to the AGC 773 and the data level 772. The AGC 773 controls the amplified IR signal level. The AGC circuit can include an amplifier and three independent control transistors. The three independent control transistors include two levels of AGC control. The first level of AGC control uses two AGC control transistors (one for each stage) and is executed after the first of the left and right headphone preamplifier stages 75 0, 770. The second level of AGC control occurs at the junction of the two preamplifiers 750, 770 output stages and the inputs to the final amplification stage 771. To generate the AGC DC bias voltage, the positive peak of the IR signal from the final amplifier stage output is corrected and filtered. The operational amplifier amplifies the DC signal. The value of the amplified DC voltage depends on the received signal strength (i.e., proportional to the distance from the IR emitter 652 of the transmission device 500). The AGC transistor resistance is controlled by the DC bias and depends on the received signal strength. As the signal strength increases, the bias voltage on the AGC transistor increases and the signal is further attenuated. The AGC 773 thus produces a stable analog signal for the data level 772. I06124.doc 41 1335154 The data weft level 772 produces a bilevel _ square wave from the analog IR signal (meaning, including one and zero). The input from the data continuation level is received from the output of the final amplification stage 771. The data continuation level compares the final amplifier 77 1 output voltage "cycle" with a positive and negative threshold level. A high pulse (one bit) is generated when the positive peak of the final amplifier output exceeds the positive threshold level. A low pulse (zero bit) is generated when the negative peak exceeds the negative threshold level. The hysteresis is solved to prevent the noise from being irregularly changed to the output level. The output of data level 772 is sent to clock recovery circuit 716 and sent as an IRf output 72 to DSp71. The data clock recovery circuit 716 is used to regenerate the data clock used by the transmitter 5. In one embodiment of the receiver 700, the data clock recovery circuit includes an edge detector and a PLL (phase locked loop). The data clock recovery circuit 716 uses the PLL to generate a data clock and synchronize it with the incoming data. An edge detector is used to generate a pulse with each rising bit edge or falling bit edge to generate a double pulse for the PLL for additional data samples. The self-edge detector outputs a short pulse when sensing the rising pulse edge or falling pulse edge. The output from the edge detector is fed to the PLL. The PLL is used to generate the sync clock, and (10) 71〇 uses the sync clock to sample the IR beet ail number 7 i 2 . In the pLL, the frequency and phase charge 5 comparator eats the & edge detector signal and the vc◦ (voltage controlled vibrating) clock output from the plL. The output of the comparator is sent to a low pass filter. The 忒 low-pass filter also incorporates a pulse memory. The data is PPM (pulse position modulation) and does not provide a constant input to the m comparator, I06l24.doc • 42-1335154 to the pulse storage. The low pass filter produces the DC voltage used by the VC of the PLL. The VCO produces an output frequency that is proportional to the DC voltage generated by the low pass chopper. When the voltage from the loop filter rises, the vcc> frequency also rises, and vice versa. When the vco clock output is synchronized with the edge detector output, the low pass filter voltage and vc〇 frequency are stable. The vc〇 frequency remains locked in sync with the edge detector until the phase or frequency difference is between the VCO frequency and the edge detector signal. The output of vc〇 is used as the data sample clock for the sequence 711 of the DSP 710, and it is also used as the base clock frequency of the DSP. The receiver Dsp 71 uses the recovered data clock to synchronize with the transmission IIDSP_ such that the data encoded and transmitted by the transmitter is received and decoded by the receiver at the same rate. Rainbow also includes a lock detector (l〇ck detect) that can be used to signal Dsp 71 when the pLL is locked (synchronized with the incoming data). Therefore, the receiver 500 continues to restore the incoming data clock while processing the incoming data packet, rather than just processing the header of each data packet. Referring now to Figure 16, an alternate embodiment of receiver 700 includes data clock recovery circuit 716 'which does not utilize pLL but uses edge detector π to tune to the frequency of the audio transmission device as the primary clock. Μ, and buffers 777, 778 for synchronizing the data clock with the incoming IR data 7丨2. Edge detector 775 is used to generate a pulse having the edge of each rising bit. When a rising edge is sensed, 'a combination of four inverses or gates is used to generate a pulse.' The edge detector outputs it. This provides a synchronized edge for the crystal oscillator. The first dirty gate of the edge detector will be reversed (4) e (10) (10) is called to the data stream. The output from the first n〇r is sent to the I06I24.doc •43· 1335154 DSP 71 0 sequence. The second n0R gate provides a buffer/delay. The output from the second NOR gate is fed to an rc time constant (delay). The third NOR gate is triggered from the RC time constant (delay). The fourth n〇r gate collects the outputs of the first and third gates. This provides a short sync pulse for crystal oscillator 776. Crystal oscillator 776 and buffer stages 777, 778 provide a dual layer clock for sampling IR data 712. The crystal oscillator utilizes a crystal frequency that matches the data clock frequency of the output transmission device 500. A free-oscillation oscillator is provided using a parallel crystal with an inverter. The pulses generated from the edge detector are synchronized with the received data stream 7 12 . Two inverter/buffers 777, 778 are used to provide isolation for the aa body vibrator 776. The buffered output is sent to the DSP sequence, the data clock input, and the voltage conversion buffer. The voltage conversion buffer reduces the clock peak level used at the DSP core clock input to 1.8 volts. Referring now to Figure 17, the DAC and audio amplifier circuit 722 produces analog signal 724 from the digitized data stream 72 1 output from the DSP 710 and is further amplified and buffered to the output of the headphone speakers 81, 83. The DAC and audio amplifier circuit 722 includes a DAC 780, which can be a 16-bit DAC for receiving from the OSP serial port transmitter 7 I 3 (from the DSP 71 0 according to the channel selected by the listener to select via switch 7丨9) The sequence digital audio stream 7 2 1 is generated to generate independent left and right analog signals 724 from the digital sequence data processor 72 I. The digital data stream 72 is substantially converted in the reverse order of the analog digital conversion process in the audio modules 622, 623, 624, 625 via the low pass filter 781 (to remove any high frequencies generated by the DAC). The output of 〇 is transmitted to the audio amplifier 106l24.doc -44 . 1335154

782. The audio amplifier 782 amplifies the audio signal and provides a buffer between the earphone 8A and the DAC 780. The output from the audio amplifier 782 is coupled to the earphone speakers 81, 83. For example, the user selectable switch 718 shown in Figure 14 allows the listener to adjust the audio volume in the headphone speakers 81, 83 and change the audio channel. An LED (Light Emitting Diode) can be used to indicate the selected channel. Two manual selector selector switches can be used to adjust the volume. Pressing the Volume Up button once will send a low pulse to the DSP 710, at which point the DSP will increase the volume of the digital audio data by a predetermined value. Pressing the Volume Down button will send a low pulse to the DSP, and the DSP will reduce the volume of the digital audio data to a level. Other open I configurations are also available. The DSP can provide a total volume level of pre-selected quantities (such as eight). All buttons can use the RC (resistor/capacitor) time constant for switch debouncing. The listener can use the manual selector switch to select the desired audio channel. Pressing the channel selection button once will send a low pulse to Dsp 7ιθ〇°, and the DSP (via DSP sequence 璋 transmitter 713) will increase the frequency data indicating the audio output. A predetermined number (for example four or eight) of different channels can be selected. When the highest channel is reached, the DSP flips to the lowest channel (for example, channel: channel -). Or 'If the channel is not available, then (10) can be programmed to automatically skip the unavailable channel to the next-available channel so that the listener does not encounter any "dead" channels, but always in the active channel (meaning, the channel of the streaming audio). A plurality of leds (eg, = number of available channels 3:, such as four) may be used to refer to eight households, ...; illumination of one of the LEDs may also indicate that power is supplied:::::. The

Wang 4 circuit and DSP I06l24.doc -45 - 1335154

The 710 is working. Or 'liquid crystal display or other type of display may refer to unselected channels, volume levels, and any other information. Such information may be encoded in the header of each data packet and may contain additional information about the selected audio stream (eg, artist, song name, album name, encoding rate, etc.) and such as being streamed to other available channels. The content, the identification of the available (as opposed to the unavailable or "dead" channel), the environment variables (speed, temperature, %, date) and any other type of information (such as advertising messages). The displayed information can include text and graphics and can be static or animated. Referring again to Figure 14' during the shutdown period, the boot memory 73 is the dsp 71 0 storage program memory. The 8-bit EEPRQM of the sequence 埠715 connected to the DSP 710 can be used to store the DSP program. — Power up the DSP and configure it to search for external memory to retrieve and load its operating software. On the other hand, the program can be provided in the DSP read-only memory (R〇M). With continued reference to FIG. 14, and also to FIG. 18, power supply 740 on the phase of the primary receiver 7〇2 receives power 761 from the switched-mode power supply 76 of the secondary receiver 7〇4. The power source 640 is powered by a power source 759 (eg, aaa battery or any battery of its type or size) or via a power line (p. body (10)d) from a DC of a vehicle or building power line, or any other feasible power source) Power, and includes + 1.8 v (or other voltages, as required by the circuit) and the associated voltage regulator. Adjusted + 18 (four) for Dsp 71

(10) Core Powered' and self-regulated +33 vdc supply voltage generation 〇 Use voltage regulator to monitor +3.3 VDC. If the level is lower than 10% of the W power supply, the voltage of the β γ je state of the lightning pressure can keep the DSP in reset. If the level is reduced to less than 1% of the +3·3 VDC power supply, the voltage monitor, 106l24.doc *46- 1335154 can keep the DSP in reset until the voltage has increased to +3.0 VDC or more. Such as the period of 200 ms. With continued reference to FIG. 18, the secondary receiver 704 supplies power 761 to the receiver system 700 and acts as a supplemental preamble for the IR signal 701 when the primary receiver IR receiver 714 is not within the direct line of sight of the transmit IR signal 16. Amplifier. The secondary receiver 704 includes an IR receiver preamplifier 750, a switched mode power supply 760', and an on/off switch 762. The IR receiver preamplifier 750 amplifies the IR analog signal 16 when the line of sight is not available to the primary receiver ir receiver 714. The two stages of the secondary receiver ir receive preamplifier are the same as in the primary receiver 702, and the output of the second stage is provided to the IR receiver of the primary receiver 702 and the input of the AGC 773 in the AGC circuit 714. The switched-mode power supply 76 0 converts the battery 7 5 9 voltage to the level used by the receiver 7 〇 〇 circuit. Most secondary receiver and primary receiver circuits operate at 3.3 VDC with less than 200 mA. The switched mode power supply produces 3.3 VDC from two aaa batteries 759. The switched mode power supply 760 is capable of obtaining power as low as 0.9 volts from the battery 759 using a charge pump (without an inductor) or with a boost converter. A low pass filter can be used to remove the high frequency components of the switched mode power supply 76. The on/off switch 762 energizes and goes to the switchable power supply 76 〇. The on/off switch circuit 762 is powered directly by the battery 759. The wheel 718 to the on/off switch circuit 762 includes a manually operated switch and dSP 71 〇. Connect a manually operated SPST (single pole single throw) switch to the clock input of the “reverse”, where the flipper is triggered each time the SPST switch is pressed. Use the Rc (resistor/capacitor) time constant to reduce the jitter from the SPST switch ((4) (4) and transient I06l24.doc • 47· 1335154. ^ High output and enable switching power supply 760 from the flip-flop. From positive The counter-low output is capable of switching the power supply 76〇, and is valid from the receiver circuit:: power. The DSP 710 can also control the function of the flip-flop. If the software does not detect a valid signal during the time, then The DSp 71 can drive an electrical body to trigger the positive and negative in a manner similar to manually operating the SpST switch. Referring again to Figure 14, in operation, the DSp 71 initiates an internal ^8 to receive the sequence ( The ppM4 encoded data on MeBsp)7 ii is moved to the two receiving data buffers. - Once all 25 samples of a data packet have been collected, the __flag is set to trigger data processing. Receive buffer, when the "flag is filled, data processing starts. This includes ppM4 decoding of the data of the selected channel, combining the high and low bytes into the element, and reducing the volume based on the listener selection. And will be used for all 25 The decoded left and right digitized values are placed in an output buffer DacBuffer. When the output buffer has been filled, a flag is set, and the first DMA continues to loop through the output buffer to present the current data. Move to sequence 埠 (McBSP) Navigator 713 ' for transmission to DAC circuit 722. Sequence 埠 Receiver 7 11 is used to capture IR data. Receiver clock (CLKR) and frame synchronization (FSR) are from external sources. The receiver is configured as a single phase, I block, 8-bit frame, 〇 bit delay and the most significant bit (MSB) of the data is prior. Ignore the frame sync pulse received after the first received pulse. The received data is sampled on the falling edge of the receiver clock. The sequence 淳 transmitter 713 is used to present the data 721 to the DAC circuit 722 for audio to be output to the headphone speakers 81, 83. As described above, pass I06l24. Doc -48· 1335154 The transmitter clock (CLKX) and frame sync (FSX) are continuously generated internally. The transmitter is configured as a single phase, 4-word, 16-bit frame, 0-bit delay and The data MSB is first. The sample is transmitted on the rising edge of the transmitter clock. The sample rate generator of sequence 711 is used in conjunction with DAC circuit 722 and sequence port transmitter 713. The sample rate generator uses one-fifth of the DSP 710 clock (divide-by-9) to achieve 8.192 MHz. The sampling rate generator drives the transmission frame synchronization signal with a frame period of 64 clock cycles and a frame width of 32 clock cycles. The sampling rate generator of the sequence 埠 711 is the main clock. The sampling rate generator Use one-fourth of the DSP 710 clock. The sample rate generator drives the frame sync signal with a frame period of 16 clock cycles. The DMA buffer of receiver 700 is generally configured in a manner similar to the DMA buffer of transmitter 500. The DMA Priority and Control Register also contains a two-element INT〇SEL register to determine the multiplexed interrupt selection, which should be set to 10b to enable interrupts for DMAs 0 and 1. DMA 0 is used to transfer IR data 712 received by the receiver using sequence 711 to one of the two buffers. The source is the sequence 埠 711 receives the register Drr〇. The target switches between one of the two received data buffers RxBufferl and RxBuffer2. The counter is set to the size of each buffer, which can be 408 words. The sync event is for REVT0 in the double-word mode of 32-bit pass. Set the transfer mode control (4) in the multi-frame mode, pass the π into the temple interrupt, and then increment (p〇st_increment) the target. DMA 2 is used to pass a single channel of digital audio to DAC circuit 722. The source is the DSP output buffer DaeBuffer. Target sequence 埠 713 transfer register 106l24.doc •49· 1335154 DXR1 〇. Set the counter to the size of the DacBuffer, which can be 4 words. The synchronization event is XEVTO. The set transfer mode control is used for the automatic buffer mode, interrupts generated at half and all buffers, and then incremented by the source. The sequence 埠 711 Receiver ISR is used to check if the data stream 712 is synchronized. The receiving data state machine begins in a dwell mode in which the received data is checked to determine when synchronization is reached. Normal operation only begins after synchronization. As shown in Fig. 12, the sequence 711 711 receiver ISR first checks the preamble 91 Pre in the stream header block 90. When the synchronization is detected, the receiver of the sequence 埠 711 is set to a dual phase frame: the first phase is 128 32-bit blocks per frame and no frame is ignored, and the second phase is frame 73. 32-bit blocks and no frames are ignored. This combination produces an equalization of 402 16-bit blocks. The state machine continues to check the subsequently received block to form the predetermined code. When this synchronization is detected, the DMA is initialized and its counter length is set to one-half the size of the receive buffer (RxBuffer), which is 408/2 = 204 words. Then set the target to the current receive buffer, RxBufferl or

RxBuffer2. Enable the next DMA 0 and turn off the sequence 埠7 11 Receiver ISR. The state machine is placed in the dwell mode prior to the next synchronization loss. If the data stream is no longer synchronized, the sequence 埠 711 receiver is set to a single-phase, 4-word, octave frame that is ignored by the frame, and the sequence 埠7丨丨 receiver ISR is turned on. If the predetermined code is not detected, it can be assumed that a reception error has occurred, and a counter in the DSP 71 is initialized to calculate the number of received packets, wherein the encoded value is not detected. After counting the pre-selected number, the 106124.doc •50· 1335154 DSP can be attenuated to the audio output of the headset. Muting based on the detection of such pre-selected quantities eliminates clicks and pops that can occur when repeated reception errors are encountered, and intermittent sound interruptions. The Dsp can be programmed to mute the audio output after encountering the first error or after counting a larger number (e.g., 10, 50, 1 , etc.) of errors. As soon as the audio output to the headset is muted, the DSP waits for the next packet, detects the code therein, and then provides the audio output to the headset again, or waits until a predetermined number of error-free data packets have been received. The cause of the previous reception error no longer exists and the system can receive it again clearly. If no error-free packets are received within a certain time (eg, 60 seconds), the DSp may initialize the auto-shutdown feature and turn off the receiver 7〇〇, at which point the listener will have to activate the manual switch 762 to start the system again. . In addition, if due to the closed audio device 34 or due to noise (eg, light that interferes with light reception), a predetermined amount of time has elapsed and no headers have been processed at all, an auto-reduction or auto-shutdown feature can be used. . When DMA 0 completes its transfer, the synchronization process is restarted. Close dma 〇 'Open Sequence 埠 711 Receiver' and trigger the current buffer index to indicate RxBufferl or RxBuffer2. A flag is then set which indicates that the dma transfer is complete. The main loop in the DSP 710 waits (in the 〇 ^ 〇 ISR) to set a flag indicating that the packet containing the audio of the four channels has been received and passed to the two receive buffers... when the flag is set At the time, the output processing by Dsp 71〇 starts. The output processing consists of determining the current buffer based on the buffer index, and then lining the channel: (4) to (4) and decoding the left and right channel data encoded by the ship 4. Applying the selected volume level to attenuate the number 106124.doc -51 · 1335154 bit signals, and then placing the final digital signals for the left and right headphones in the currently outgoing data block as previously described with reference to FIG. Medium for transmission to the DAC circuit for conversion and amplification. Many modifications and additions may be made to the embodiments disclosed herein, including hardware and software modifications, additional features and functions, and different from audio streaming or removal, without departing from the spirit or scope of the invention. Use outside of audio streaming. Referring now to Figure 19, a vehicle 800 such as a car 'bus, train car, warship, aircraft or other suitable vehicle may include a factory installed or aftermarket installed audio device 34, which may include a wireless tuner, — A typical built-in audio unit (播放n-dash head unit) for a player or a cassette player and an amplifier. The display audio device 34 is powered by a power system 802 (e.g., battery, alternator, etc.) of the vehicle. The overnight system 80 1 can be added to the vehicle 8 〇〇 and includes a plug-in unit 82 含有 that includes a transmitter subsystem 12 and an IR transmitter driver 22 and is coupled to the audio device 34 to receive at least one channel of stereo audio therefrom data. Other sources of information, such as video devices (such as DVd player 832) and audio devices (such as MP3 player 834), can be coupled to plug-in unit 82A. The plug-in unit accepts digits and analog data as previously described and is preferably powered by the audio device 34. The communication system 82 further includes a transmitter 8〇6 including a neon light emitting diode (LED) 20, and a wiring device (~harness) 8〇4 for connecting the card unit 82 and the transmitter 806. Alternatively, the entire IR transmitter portion 18 including the ir transmitter or LED 20 and the IR transmitter driver 22 can be included in the transmitter 806. I06l24.doc -52- 1335154 As described above, the transmitter subsystem 12 receives audio data from a plurality of channels to generate | digitized audio signals. The digitized audio signal is provided to the IR transmitter driver 22' which generates the appropriate current to operate the LED2 to transmit the IR signal 16. If the 1R transmitter driver 22 is included in the card unit 82A, the wiring device 804 carries the current to the LEDs in the transmitter 806 or if the IR transmitter driver 22 is included in the transmitter, the wiring device m transmits The digitized audio signal generated by the subsystem 12 is broken and transported to the IR transmitter driver. Hey. This segmentation design of the communication system 8G1 comprising three discrete components (plug-in unit 82〇, 酉 line device 8〇4 and transmission benefit 806) provides: the system is selected as a factory option or as an aftermarket addition after the vehicle leaves the factory The simplicity of the product installed in the vehicle_. The plug-in unit (4) can be installed in the dashboard of the vehicle and can utilize a single connection to the built-in headphone or audio device 34, and optionally to each additional source of audio. Alternatively, the audio device 34 can provide audio for multiple synchronized channels to the plug-in unit (4) where a single connection to the audio device 34 is required. The transmitter 806 must be mounted at a location that will provide a direct line of sight that is wide enough to the rear of the vehicle. The transmitter 8〇6 can be mounted in the dome light housing of the vehicle 8〇〇. By inserting the IR transmitter driver 22 into the card unit 82, the transmitter 806 is made smaller (because it only contains coffee 2), which can further assist in such installation. The wiring device 8〇4 is also relatively Small, because the standup only needs to contain a small amount of wires to carry a digitized signal that will be placed by the IR transmitter driver U or will directly operate the LED 20. In either case, the voltage and power of the current carried by the wiring device 804 is very low, Moreover, the wiring device is preferably formed with a smaller cross section that further simplifies the installation in the vehicle 800 because it can easily travel along a tortuous path and requires a limited space. With continued reference to Fig. 19, the system 801 further includes A device is provided to receive signal 16, such as earphone unit 14 and speaker 842. The earphone unit and/or speaker can be provided with an IR receiver 70 that is used to receive IR signal 16 from transmitter 806. More specifically described elsewhere herein. Headphone unit. The speaker 842 is equipped with a similar circuit, which comprises an IR receiving signal processor 72, a decoder with a clock 74, a demultiplexer and a controller, for counting The analog conversion DSP 76' and to amplify one or more of the selected channels. In an alternative embodiment, the 'speaker 842 may not include a channel switch selector 78, but may be programmed to always play a preselected channel. For example, the channel selected at the headset unit. Furthermore, due to the higher power requirements, the speaker 842 is preferably powered by the vehicle power system 8〇2 (not shown in Figure 19) via a cable. The speaker 842 is programmed to automatically cut in and play a priority channel for communication between the driver and the passenger, or an emergency channel such as a baby monitor or mobile phone channel as described first. Referring now to Figure 20, the vehicle 8 can have The communication system including the audio device is first shown as being powered by a power supply 802 (eg, a battery, an alternator, etc.). The audio device 34 can be hardwired via an electrical wire 8〇4 to include an IR transmitter. (eg, a light-emitting diode (LED)) and an IR receiver (light receiver) transmitter/receiver_. As previously described, the audio device 34 can provide audio information for a plurality of channels. In other embodiments, the audio device 34 can provide other types of data, including video data, mobile phone sound data, and text. Therefore, a video device such as a DVD player I06l24.doc • 54-1335154 803 can be connected to the audio device. The device 34, as previously described, can in turn compose the video signal from the DVD player and provide it to the scale transmitter/receiver 806' for transmission to the rear of the vehicle via the IR signal 丨6. The vehicle 800 can also include a mobile phone connectable to the audio device 34 or its wireless communication device 805 that can again encode the sound stream from the phone for IR transmission. As described below, equipment may be provided for two-way communication by the passenger to talk over the telephone via the audio device 34 and other IR devices. System 801 can further include an IR repeater 81, similar to transmitter/receiver 806, which includes an IR transmitter and an IR receiver. The repeater 8 〇 receives the IR signal 16 and retransmits it, thereby increasing the effective transmission area of the system 8.1. The repeater 81 can be designed to transmit signals 16 from the front of the vehicle 8 from the rear or from any other or all directions. Thus, depending on the application, the repeater 810 can split into multiple receivers facing multiple receive directions and multiple transmitters facing multiple transmission directions. The repeater 81 requires a power source (not shown), which may include a battery, a connection to the vehicle's power source, a solar panel mounted on top of the vehicle, or any other suitable or convenient power source. The system thank-in case may include a communication subsystem 82A containing a power supply via a wire connected to the vehicle's power source (such as via a teach light) to the Sakizaki (4) group 8 to transmission ^ receiver The coffee is connected to the module 822 via the wire 827, and the _^ is connected to the #71?. X to receive the signal 16 and forward it to the right, and, and so as to be connected from the module 22 to the π u Transfer to the area around the vehicle 800. The module 822 includes circuitry (including DSP) similar to the 装置, 曰 装置 34 device for transmitting data and encoding the data as described for the IR trajectory I06124.doc of the Navigator 826. 55. 1335154. The input data can be digital or analog, and thus the group 822 can include one or more ADCs to accept analog data and digitize it for encoding as disclosed herein. The manufacturer of the vehicle 8 can pre-install the subsystem 820, thereby allowing subsequent purchasers of the vehicle to install the customized IR device based on what is required or required as described below, without the need for extra labor, complicated additional wiring. installation. Module 822 can receive a variety of data including analog or digital video data from camera 83A for transmission to audio device 34 via transmitter/receivers 826, 8〇6 (and optionally via 8 1 0). The audio device can include or be coupled to a video display 831 for displaying audio data received from the camera 83. A camera 83 can be mounted to the rear of the vehicle to provide an instant display of the vehicle behind the vehicle 8 and substantially serve as a warning to warn the driver if another vehicle or other obstacle is too close to the vehicle 8 And / or proximity sensor (pr0ximity sens〇r). Module 822 can also receive audio input from an audio device such as a microphone 832. Microphone 832 can be used as an audio monitor, such as a baby monitor as previously described, or a medical monitor for a patient traveling in the posterior portion of vehicle 800. As previously described, the person wearing the headset 80 can also use the microphone 835 to access a mobile telephone device (or a civilian band radio (CB to (1) Magic, or any other type of wireless communication device) connected to the audio device 34 for action. The phone or other communication device receives and conducts a conversation. Accordingly, the microphone 832 can be physically separate from the headset 80 or can be plugged into the headset 80. The headset 80 or microphone 835 can be plugged into certain controls to access the mobile phone or Features of other communication devices, such as hang up, dialing, volume control, and communication channel selection. 106124.doc • 56- Module 8 2 2 Available from batch gg. η Fenggong β 33 accepts data such as patient monitoring (eg heartbeat, The basin 833 is physically applicable to the person who is traveling in the vehicle 8〇〇, and the two can be strangely monitored. 833 can be any other device, and thus can be used for the brewing monitor to report the container 'rf' to the driver of the vehicle 800 such as, for example, Food transport clothing The food granulator that the company is transporting. The system 801 can be installed in steps (for example) in the passenger seat (4) ^ for passengers sitting in the back seat (for clarity, passengers are not shown in Figure 2) The display device 838 includes an IR receiver 839 for receiving an IR signal 16 containing, for example, video information from the DVD player 8〇3 or from the camera (4). The game control device 836 may also be used. Connected to the module for communication with a video game player 837 connected to the audio device 34. In this embodiment, the passenger can wear the headset 80 to listen to the audio and video transmitted by the video game device 837 for transmission by the audio device 34. A oundtrack of the game software of the signal. The video signal can be displayed to the passenger on the display device 838, and the passenger can enter and enter the game via a game control device (eg, joystick, touch pad, mouse, etc.) 836. The game software interaction executed on the module 822 can further output the audio data to the audio speaker 842, thereby eliminating the need for the speaker to extend from the front of the vehicle 8 to the rear for the speaker. The speaker 842 can be powered by the vehicle power supply, in which case it can include an amplifier for amplifying the audio signal received from the module 822. Alternatively, the module 822 can include processing the received signal 16 as an analog audio signal IU6l24. .doc -57- 1335154 and all of the circuitry (including the DAC) needed to amplify the analog signal before it is supplied to the speaker 842. The channel played via the speaker 842 can be = by the audio device 34 (ie, by the vehicle 8 The driver of the device or any other input device including the game control device 836 (i.e., by the passenger in the vehicle) is selected and can be transmitted from the audio device for decoding of the parent package in the module 822. The channel so selected is indicated in the header. In other embodiments of the aforementioned encoding mechanisms, such as those described with respect to Figure 12, the data may be configured in a transmission buffer in various other configurations to reduce the processing power consumption of the receiver. As an example, all of the data representing a channel can be stored sequentially in the buffer (and subsequently transmitted), followed by the next channel, and the like. If a channel or channels are not available, they can be identified in the header of each packet. In this manner, the receiver Dsp can be powered down during the time when the inactive channel data is being received. When - or multiple channels are inactive, the transmitter can set the bandwidth of each channel, e.g., by sampling the incoming audio data at a higher rate to provide a higher quality digital bit stream. Alternatively, the transmitter may utilize the excess capacity by adding error detection and/or correction features, such as containing redundant samples or advanced error correction information such as Reed-Salomon values. In order to minimize the reception error, the number of audio samples included in each packet can be used in the number of errors experienced by the receiver and in the model. This feature would require some feedback from the receiver regarding the error experienced, based on which the transmitter DSP can be programmed to contain fewer audio samples per packet. I06l24.doc -5S- 1335154 Other error detection mechanisms can also be used. As an example, the code is randomly changed, and the location ^ is inserted into the data block - the position ^ is also the same as @石民枯. Or, you can use the phase, flat mom value. The (equal) position of the (equal) value can also be randomly changed from packet to packet to remove the shadow of the fixed frequency error. In #4, this (etc.) 仂 了 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在Matching the damage in the head...

^. The value stated in the header' then the DSP may discard the output because it contains errors and may mute the output as previously described. = Retaining bandwidth and enhancing processing efficiency 'This (etc.) encoded value may contain extras, ie, encoded values, rather than random values, may represent, for example, active and inactive channels. Preferably, the encoded value is placed at at least the location assigned to the data block of each active channel to ensure that the value is in the channel selected by the listener for Dsp processing. In another embodiment, an eve code value may be used, each code value representing a different system variable or other information (eg, one code value indicating an active channel and another code value having a check-sum value) , the other-encoded value contains the Reed-Salmon value for forward error correction, etc.). In a two-way system such as system 801, the headset 8 can include a transmission state to enable the receiver DSP to transmit the received error value to the audio device 34 with respect to the received data. Based on this value, the transmitter DSp can take some block difference positive action, which includes retransmitting the bad data packet and adjusting the data packet size (for example, when the error rate is above the predetermined threshold, the transmission contains less data. The packet, or dynamically adjusts the amount of data per I06124.doc -59 - 1335154 packet as a function of the received error rate, and increases the transmission power generated by the IR transmitter 18. / See &gt; Looking at Figure 2, in an alternative embodiment, the vehicle 9A includes a communication system 9〇1. As discussed with respect to other embodiments, the communication system 910 may include an audio device 34 that is fixedly connected to the optical transmitter/receiver by a (right-hand) wire 804. The 汛 system 901 may also include an ir transmitter portion 1 8. A digital bit stream for receiving coded data from the device 34 and for controlling and powering the optical transmitter/receiver 806 to transmit optical pulses. As shown in Fig. 18, in order to install and repair the 'maintenance and upgrade's simplicity, the transmission: ° ί5 knife 18 can be provided independently of the audio device μ, or it can be included in the audio device 34. The audio device 34 can provide audio and other data of a plurality of channels, and is not adapted to receive audio and video data from the DVD player 8〇3, from the auxiliary audio device 922 (eg, an MP3 player, a digital satellite radio tuner, Video game equipment, etc.) and mobile telephone 8〇5 audio and/or video data, geographical location data from the Global Positioning System (GPS) unit 92, and vehicle central processing unit from various functions of monitoring and controlling the vehicle 9〇〇 Various vehicle data of (CPU) 924 (e.g., telemetry information. As previously described, communication system 901 can provide two-way communication, and audio device 34 can therefore be received by transmitter/receiver 806 from other ir devices in vehicle 900. The data is directed to devices such as vehicle cpu 924 and mobile phone 8〇 5. CPU 924 can receive information such as proximity information from camera/proximity sensor 830 for display to the driver of vehicle 9 Video camera or warning. With continued reference to Figure 21, the communication system 9〇1 can further include the communication subsystem I06l24.doc -60· 1335154 92丨, which includes The (several) wire 827 is fixedly connected to the IR receiver/transmitter 926 of the communication module 923. As described elsewhere with respect to the module 822 (FIG. 17), the communication module 923 can be fixedly connected to the camera/ The proximity sensor 830 is configured to receive data from the camera and transmit it to the vehicle cpu 924 via the 汛 receiver/transmitters 926, 6 and 34 34. The module 923 can also receive audio data from the audio device 34, and The audio data is provided to a subwoofer 942 that can be installed in the car or (as shown) installed under the seat of the vehicle 9 。. In addition, the module 923 can also be fixedly connected to the CD converter installed in the car. 950, and receiving audio data from the CD converter for transmission to the audio device 34 for playback within the vehicle 900, and receiving control commands input by the vehicle driver via the audio device 34 for controlling the CD converter, such as a CD And arbitrarily selected, shuffled, repeated, etc. The module 923 can include one or more DACs to decode the audio data received from the audio device 34 as described elsewhere and for the subwoofer 942 Xima data transfer In analogy, the subwoofer 942 can include a DAC, and thus can receive decoded digital audio data directly from the module 923. The module 923 can also include one or more ships, and more from the camera 830 and the CD converter. The 950 accepts the analog data, converts it to digital form, encodes it as described elsewhere in this A, and transmits it to the audio device 34. The vehicle CPU 924 can be connected to the communication system 9〇1 to The telemetry information is transmitted to the CPU. For example, the tire pressure monitor 952 can be placed in the vehicle_rear area and can be fixedly connected to the module 923 to transmit information about the rear tire pressure to the vehicle cpu. In this way, the use of the communication system 9〇1 can extend beyond the entertainment function to the vehicle operation I06l24.doc -61. 1335154. In another embodiment, the IR receiver/transmitter 926 can incorporate a repeater for receiving a chirp signal from any of the IR transmitters in the vehicle 900, amplifying the received IR signal, and retransmitting the received signal. The signal is received by other IR receivers in the vehicle. The wireless speaker 940 can be mounted in the door of the vehicle 9 or installed in any other feasible location, and includes a 1R receiver/transmitter 941» preferably, the speaker 94 includes a decoder for decoding from the IR receiver/transmitter 8〇6, 926 receives the DSp of the encoded digital audio data and a DAC for converting the decoded audio data into an analog form for playback in the vehicle 9〇〇. Both the speaker 94 and the sub-lower speaker 942 require a power source that can be provided by the vehicle 9 〇〇 power source, such as from the power source to the taillights of the vehicle. Still &gt; See Figure 21' The two-way headset 980 includes an ir receiver/transmitter 982 and a microphone 984. The IR receiver/transmitter 982 flows through the optical bits of the data by the IR receiver/transmitter 8〇6 or optionally via the 1R receiver/transmitter 926 and the audio device comprising the repeater as previously described. 34 communications. The two-way headset 980 can be used to access the mobile phone via the audio device 34 to issue a two-way conversation. The two-way headset 98A may include a number of sub-pads for dialing, or the audio device 34 may include voice recognition capabilities to allow the user 93 3 (using the headset 98 〇) to select only a predetermined channel to place a telephone call and then by saying The command is sent to the microphone 984 to activate and operate the mobile phone 805. The headset 980 can further include an ADC coupled to the microphone 984 for digitizing the sound of the user 933 for encoding as described elsewhere herein. And IR transmission. The two-way earphone preferably also provides other functions provided by the earphone 8 as described in the first hand, which includes controlling the audio tone 106124.doc • 62· and selecting one of the plurality of communication channels. With continued reference to FIG. 21, the remote controller 936 includes two-way communication with the audio device 34 for receiving via the IR receiver/t transmitter 806 and (as appropriate) the relays included in the IR receiver/transmitter 926. / transmitter m. The remote control benefit 936 can provide any one or more of a plurality of controls, but not limited to a keyboard, a joystick, a button, a trigger switch, and a voice command control, which can provide a sense of audio or tactile/vibration in one step. View feedback. Remote controller 936 can be used for a variety of purposes including accessing and controlling mobile phone 805 as previously described. The remote controller 936 can also be used to access the sub-control video game console 922 to play the video game displayed on the video display 838, and play the game sound via the headphones 8〇, 98〇. The remote controller 936 can be further configured to control the video display device Mg and adjust the display function and control to control the dvd player 803 to display the movie on the video display and control its function (eg, pause, stop, fast forward). In order to control the CD changer 95A installed in the vehicle, the telemetry data from the vehicle CPU 924 is requested to be displayed on the video display 838, or other vehicles such as the lock/open door and the open/close window are controlled. Two or more remote controllers 936 may be provided in the vehicle 9 to allow two or more users 933, 935 to play video games, the games being individually displayed in multiple, individual video On display 838. Each remote controller 936 can access the audio device 34 and the video game console 922 via an independent communication channel, and thus enable the gaming machine to provide different individual video and audio streams to each of the video display devices 838 and the headsets 98, 8 Each of the users 933, 935 can further program the headsets 80, 980 to receive an IR signal from the remote controller 936 I06124.doc • 63· 1335154 to select another channel or based on a function selected by the user (eg, Play video games, watch DVDs and automatically select the appropriate channel. The DSP 76 of the headset 80 can be programmed to recognize different audio devices 34, such as those found in a vehicle or at home. Each audio device 34 can therefore include further information in the header of each data packet to provide a unique identification code. The DSP 76 can further include programmable memory to store various user selectable options for each of the audio devices 34, and the user of the earphone ribs can desire to receive audio and other data from the audio device 34. Thus, as an example, the DSP 76 can be programmed to receive and decode a predetermined number of stereo and/or early audio channels when self-installed in the vehicle, while the device 34 receives the data and is programmed to be self-connected to the home. The theater system tone T device 34 receives and decodes six single audio data channels to provide a true 5.1 audio experience when receiving data. In another embodiment, the headset 80 can have user-customizable features that can be adjusted to different values for each available channel and automatically detected and applied to the tone control (eg, bass) when the user selects each channel. , treble). In addition, custom features can be set for individual audio devices 34, such as the above-described audio devices in the vehicle and home audio devices. The earphone 8 can therefore have additional controls such as bass and treble control, as well as other signal processing options (eg 'panoramic, concert hall and other custom settings can be saved as a set of headphones in the memory It included in the headset (9). For any type of erasable memory, or for the two-way headphone 980, the user-adjusted feature value can be transmitted to the audio device 34' for storage in the memory in the audio device. These custom values are embedded in the data stream representing the signal ^ channel that is to be copied by the headset 98 and restored to the selected channel (for example, in the header of the data packet). <For example, the feature can be customized via the audio device so that even the one-way earphone 80 can enjoy the customized machine... The early D is again 疋. The customized feature is stored in the audio device 34. In the example of the solid volume in the memory, each of the individual earphones 80 and/or 980 may have an individual identification/input/can be input by the user via the control provided on the earphone (for example, Headphones three Etc.) (4) (4) will allow the audio device to embed the custom settings for each set of headphones in the data representing each channel to be restored by each set of headphones, then the 'each set of headphones will recognize引亚 selects its own appropriate set of custom settings 'to apply to the channel of the channel selected by the user of the particular group of players.

In addition to the Ting Headphone Profile, the user is allowed to specify individual user profiles that specify specific preferences for each individual user of the headset within the vehicle. These individual profiles can be stored in the audio device 34 and transmitted within the data stream as described above. In this embodiment, each user may need to enter a unique identification code via the control of the selected headset 8 to enable itself to be recognized by the headset, which can be programmed to subsequently extract the individual of the user wearing the headset. The user profile and the custom settings in the profile are applied to the signal of the channel selected by the user. These profiles may be embedded in each data packet, or may be transmitted only once when the audio device 34 is powered up for the first time, or may be transmitted at regular time intervals. Or 'each set of headsets 80 in the vehicle 900 can store all user profiles in the memory, and can update the profiles intermittently or each time the audio I06124.doc • 65· 1335154 device 34 is powered up Update these profiles. Referring now to Figure 22, a communication system is provided in a vehicle 988, wherein the vehicle includes a data bus 990. Data bus 990 is coupled to vehicle CPU 924 and extends throughout vehicle 988 to connect various devices within the vehicle (e.g., camera 83 0, CD converter 950) to the CPU. As illustrated, the data bus 990 can extend through the top lining of the vehicle 988 or can take an alternate path through the vehicle to the desired device to which it is connected. The data bus can be a fiber bus or can be an electronic wire bus and can operate at various transmission speeds and bandwidths. In one embodiment, data bus 990 can operate in accordance with Bluetooth wireless communication standards or according to Media Oriented System Transport (MOST) communication standards for fiber optic networks. Communication system 991 includes an IR module 992 that is mounted at one or more locations within vehicle 988 and coupled to data bus 990. Each IR module 992 can include an IR receiver (light receiver) and can additionally include an IR transmitter (e.g., one or more LEDs). As previously described, a repeater can also be incorporated into each IR module 992 to retransmit the received IR signals. In addition, each IR module 992 includes circuitry (eg, a network interface card) for connecting to the data bus 990 via the interface to read the data being transmitted on the bus and convert the data into an IR signal for the LED. The transmission is also performed by converting the received IR signal into a data format accepted by the bus and transmitting such data on the bus to the audio device 34 or any other device connected to the bus. The interface circuitry can further include a buffer or cache memory for buffering data when the IR receiver and/or transmitter operate at a different speed than the data bus 990. 106124.doc • 66. In this example, 'there is no need for the audio device 34 to be the central control unit of the communication system 991' instead of being a decentralized system, and the Mir module 992 enables any IR device within the vehicle 988 to Any other IR device operating in a compatible encoding mechanism or connected to any other, k&quot; face connected to the data bus 99. II by properly addressing and identifying the data transmitted on the data bus 99 (for example, 35 by the information placed in the header of each data block or data packet) 'connected to each device of the data bus A channel that identifies the data it needs to decode and use, and optionally assigns a unique address to it, and the data it wishes to receive can be uniquely addressed to that address. This hybrid can be easily expanded' because no additional wiring is required to connect additional devices

To the όHai network; instead, each ^ -τ Vit T can be equipped with an IR transmitter/receiver that allows the device to connect to the network via the wireless interface. Referring now to Figure 23, in another embodiment, a communication system 1GGG is provided in a building 1010 wherein the building includes a communication network 1020. The network 1〇20 can be a wired or wireless local area network (LAN), such as a wireless (RF) network that complies with 8〇2_l1 (WiFi). Alternatively, the network port 2 can be, for example, connected to a wired data line of the local cable television (cable televisi〇n) company network 1 (10) 2. As is known to those skilled in the art, the network can be connected to receive media content such as television and music channel I, and the step is provided to the Internet via the cable modem ι 24 Connection. The network 1020 includes a wireless (radio) RF transceiver 1〇3〇 that is fixedly connected to the network and installed in the room 1〇11 of the building for propagation via the rf signal 1032 throughout the building. Information flowing on the Internet of Things. I06l24.doc -67· 1335154 minimizes RF interference from multiple RF transmitters throughout the building 10 10 'Room 1012 in a building may be equipped with an interface encoder/decoder 1040 that is connected to The rf-passenger 1〇3〇 receiving the light signal from the network 1〇2〇 receives the light signal 1〇32iRF antenna 1034. The decoder/encoder 1040 can then encode the received network signal as described elsewhere herein (eg, as discussed with respect to FIG. 1A) and drive the IR transmitter/receiver 1〇5发光1R illumination two. The polar body emits an IR signal 1052 that carries the network data. A device such as a personal computer (PC) 1060 in the room may be equipped with an IR transmitter/receiver 1 〇 7 有用 for receiving the signal 1052, and the encoder/decoder 〇 8 extracts data from the IR signal. And the data from the PC is encoded and transmitted as the IR signal 1062, and the interface decoder/encoder 1〇4〇 will receive the IR signal via the transmitter/receiver 1 050, the interface encoder/decoder 1〇4〇 The data carried by the PC 1〇6〇tIR signal 1〇62 can then be decoded or demultiplexed and transmitted to the RF antenna 1034, which in turn transmits the data as RF signal 1 〇36. The transceiver 1 〇3〇 will receive the RF signals and communicate them to the network 1 〇20. With continued reference to Figure 23, the room 1〇13 of the building 1010 can be equipped with a home theater system 1100 that is coupled to the network 1020 for receiving television and audio programming. The home theater system can also be coupled to a decoder to receive audio from one or more channels from the home theater system preamplifier and drive the IR transmitter ii 20 (as described elsewhere herein) The audio of these channels is transmitted as the signal 1122. As previously described, the room m2, such as the wireless headset 4 and the remote speaker (4), can each be provided with a jaw receiver 70 and a decoder circuit for decoding the IR signal 1122. The signal (1) 2 can be I06124.doc * 68 - 1335154 for each speaker 1130 carrying a voice signal of a single voice such as 5 channels, thereby forming a so-called 5.1 audio system. The IR signal can also carry audio for multiple channels such that the listener 1150 wearing the headset 14 can choose to listen to an audio channel other than the audio channel being played by the speaker 1130. It must be understood that many other types of devices can be wirelessly connected to the network 1020, including but not limited to, telephones, fax machines, televisions, radios, video game consoles, personal digital assistants, various home appliances for remote control, and/or Court security system.

Hybrid system 1000 thus utilizes the ability of RF signals to propagate through the wall, but minimizes RF interference that can occur in such situations. System 1 is also highly flexible and allows multiple additional devices, such as PC 1060, to be connected to a wired network such as network 1020 without actually installing any additional cables or wiring in the building. Instead, a single interface encoder/decoder 〇4〇 needs to be installed in each room of the building, and the devices in any room so equipped can then be via a one-way decoder such as a decoder or such as The encoder/decoder. 1080 bidirectional encoder/decoder is connected to the network 1020. In this way, older buildings can be easily and cost effectively retrofitted into modern office buildings with the necessary network/communication capabilities. Referring now to Figure 24, an n vehicle 8 can be equipped with a communication system as previously described. # Include an audio device 34 that is fixedly coupled to the jaw receiver/transmitter 8〇6. In this embodiment, the communication system includes two jobs/transmissions H 8G6L and 8G6R 'they are all difficult to connect to the audio device 34 by the line fox 807R, so as to be the first brother in this article. The self-audio device 34 receives a digital signal. The 汛 receiver/transmitter I06124.doc • 69· 1335154 806L and 806R are installed substantially above the left rear seat and the right rear seat of the vehicle 800 respectively to respectively emit relatively narrow-focusing melon signals 16L, 16R for respectively The earphone receiver unit 14 worn by passengers sitting in the left rear seat and the right rear seat of the vehicle 800 (labeled ML in Figure 24 for individual discussion, individually received. In this way, each earphone 丨 4L, 丨411 may receive individual signals 16L' 16R, respectively. Signals 16L' 16R may be identical to each other or may be different from each other. Thus, the present embodiment allows for the provision of and/or transmission of signals such as signal 16L in a plurality of headphones and as previously described. Further distinguishing among other wireless devices of the 16R wireless signal. The nicknames 1 6L, 16R may be unidirectional, or as illustrated, when the wireless device is equipped with a wireless receiver and a transmitter, it may be bidirectional. In this embodiment, a simpler, more cost effective wireless device can be provided that will allow each headset (or other wireless device) user to communicate individually with the audio device 34. In this way, the audio device 3 can be 4 configured to provide a plurality of individual wireless (e.g., IR) signals for each of a plurality of (e.g., four) multiplexed channels of data (e.g., audio and/or video data), and thus provide wireless device users with The multiple selections Q of individual wireless signals transmitted by each receiver/transmitter (eg, ir receiver/transmitter 806L, 806R, etc.) (eg, by signal, !6R, etc.) may be selected via audio device 34, and / Or alternatively, each bidirectional device capable of transmitting the wireless device to its ship receiver/transmitter. Achieving a narrow focus on the wireless signal 'in the case of the wireless signal (4) The pole body is provided directly under the rear axle and behind the rear seat and towards its (10) receiver/transmitter. ' 106l24.doc 1335154 further describes 'using an LED with a relatively small physical size (such as can be wide with 80 〇 yni It may be advantageous to have a 1000 ym high SMD (Surface Mounted Device) Led. It should be understood that 'these embodiments simplify the overall design and also minimize interference and interference between different signals due to the narrow focus of the LED. Or The serially encoded digital bit stream 16 can be further multiplexed, for example, at a higher speed, such that a significantly larger number of selectable channels are available for each user 'eg, for use on an aircraft. The above embodiments are described in terms of a system for transmitting digital signals, but it must be understood that the embodiment of 纟X 4 can equally be applied to a transmission analogy system. Therefore, the embodiments described herein can be used to Selecting the signals to be transmitted by their respective wireless receivers/transmitters to provide access to multiple channels for users of analog wireless devices, such as headsets. Thus this embodiment can be eliminated (for analog systems and numbers) Both:) fully multiplexing the data of multiple channels into a single-signal requirement, such as a headset, the individual channel to be transmitted by each wireless receiver/transmitter located above the user. The data (such as stereo sound, and think) eight is independent of and different from the information of the channel received by another user in the same vehicle. Combination = 1:: Implementation: It can also be used to provide analogy and digital signal mixing. It can be used with more than one analog wireless receiver/transmitter == vehicle, which is transmitted from a channel such as audio device 34. For analog wireless to receive a digital receive line 3 receive, and it can also have one or more ... receive theft / transmitter, (or video, or other) device digitized from the same or additional audio channel Received for digital wireless installation 106i24.doc 1335154. A vehicle so equipped can allow the user to have more choices for the wireless device used therein. In one embodiment as described herein and illustrated in FIG. 25, the 汛 receiver/transmitter 806 (shown only for the sake of clarity) is placed in the top 809 of the car _ 1 1 After the visible surface. As is known, the car top lining extends below the top of the vehicle and is attached to the top of the vehicle. The top liner is typically formed from a soft material such as polystyrene foam or other foam, and is covered with a m-view material 813 (such as cloth or textile or polyvinyl chloride (pvc)). In a possible embodiment, a hollow space 815 can be formed in the top liner 809 to accommodate an IR receiver/transmitter 806 therein. A narrow space 817 can also be formed in the top liner and extend from the hollow space to receive the electrical wires 807 therein and direct the electrical wires toward the front of the vehicle, where the audio device 34 will typically be located. The top lining 8 丨 3 may advantageously be formed from a material that is transparent to the wireless signal transmitted by the transmitter/transmitter (e.g., the IR signal emitted by the IR receiver/transmitter 806). Alternatively, an opening may be formed in the cover 813 to allow the signal to pass therethrough and, as appropriate, a second transparent cover 819 may be mounted within the opening and the wireless receiver for protection and/or aesthetic reasons. Above the transmitter. Referring now to Figure 26, the communication system 40 can include a computer 1142 or other desktop or portable unit to which the transmitter 18 is mounted and can be inserted into a serial or universal serial bus (USB) or other conventional device. The cable is connected to it. Transmitter 18 transmits sequence encoded bit stream stream 6 to headphones μ or computer speakers such as speakers 1144 and 1146, each of which may have a suitable decoder and (as appropriate, for example, as shown in FIG. The switch selects 106124.doc • 72-1335154 The communication system 1140 provides the audio output generated by the computer from the computer 1丨42 to the listener who can selectively use the speakers U44 and 1146 or the earphone 14. Transmitter 18 receives digitally formatted audio for one or more channels from computer 1142 via cable 1148, or for compatibility with some computer systems, transmitter 18 can receive audio formatted audio for one or more channels via electrical delay 1148. The audio is converted to a digital signal using a DAC or similar device as described herein. Transmitter 18 produces a sequence coded bit stream stream 6 for simultaneous reception by speakers 丨丨 44, 114 6 and headphone 14. The volume adjustment and control knob 11 52 represents a manual adjustment that can be made via a computer or (as illustrated) via a physical knob 1152 by a data input represented by the knob 1 152 and/or by positioning to the earphone 14 or one or The knobs 11 52 on the plurality of computer speakers 1144, 1146 are made. One of the control inputs to be made via knob 1152 can be active at any time for selecting which sound producing device (computer speaker 1 144, 1 146 or earphone 14). It is generally desirable to mute the computer speakers 1 144, I 146 and receive audio via the headphones 14 to minimize ambient noise near the electrical thin 1142. Similarly, because the headset is typically powered by a battery, it is desirable to mute the headset 14 and turn it off when not in use. Moreover, because the computer speakers 1144, 1146 are not connected to the computer 1142 by cables, it may be convenient to provide battery power for the computer speakers 1144, 1146 to avoid power via a converter connected to a standard AC power outlet. . It is most convenient to select the earphones via the data input or the so-called 1152 on the computer 1142. This selection can be implemented by the techniques described above, such as using the code in the sequence encoding digital bit stream 16 using the location I06124.doc • 73-1335154. Referring now also to Figure 12, a selector speaker 1144, 1146 can be inserted into a known location within the header 87 such as "SpKRSn" to indicate the selection. The receiver unit in the headset 14 can be programmed. To eliminate sound reproduction, unless a codeword such as &quot;HDFNS&quot; is found at the known location, the speakers 1144, 1146 can be programmed to mute 0 if no SpKRS is found at that location. In an embodiment, two copies of the codeword block can be located within the sequence coded bit stream 16 for comparison. As described above, error events can be detected and monitored by detecting and comparing the code at two locations. After a certain number of error events have been detected and monitored within a limited time frame, the quiet clerk is operational until (and if) an error event is not detected and monitored for a specified period of time. The auto-shutdown function disclosed above can also be used to cause the headphone 14 and/or the speaker (4) ιΐ44, &quot; Μ to disconnect the battery power when no sound is reproduced in the foot. The auto-shutdown function can be combined with the error event function so that a certain number of error events monitored during a certain period or period of silence periods can cause the sound 冉A A t to be early* to disconnect itself from the battery power. Similar works can also be used to provide and self-A. The wall outlet is applied to, for example, the electrical power of the speakers 1144, 1146 is broken. . Referring now again to Figure 26, the signal input connector (1). Can be used to apply priority signals to computers &quot;42' such priority signals such as landline = w), line (4) words or (10) ringtones or lane or garden sensor outputs are not applicable to sequence coded bit stream 16 for reproduction on the ear I06l24.doc • 74- 1335154 machine 14 and / or computer speakers 1 丨 44, 1146. This feature is similar to the priority channel described above with reference to Figure 19. The data applied to the sequence-encoded digital bit stream may be merely a tone or a tweet indicating one of the signals applied to the signal input connector. The data may also represent pre-programmed messages (such as &quot; Is ringing, or may indicate, for example, audio received from the baby room monitor. The reproduced data may be superimposed on the current audio reproduced by the earphone 14 or the speakers 1144, 1146, or may be superimposed upon receiving such information. The independent priority signal is automatically selected. Knob 1 1 52 can also be used to perform volume control at the center position. For example, δ, when the selected code in the sequence coded bit stream stream 6 is changed to HDFNS, The volume of the audio reproduced by the earphone 14 may be inappropriate, even if it is the volume of the audio reproduced by the speakers 1144, 1146. One or more knobs 1152 may also be (or are) positioned on the computer 1152, on the transmitter 18. And one or both of the speakers H44, 1146. Referring now to Figure 27 and any communication system such as that disclosed herein, an audio data source (such as an MP3 player 44, or a digital device) One or more of the machine or other data source may be a portable device (such as a portable mp3 player 45) 'which may be wirelessly connected to a suitable receiver, such as audio device 34, by a bit stream similar to bit stream 16 The receiver is connected to the main controller (10) and transmitted to the earphone 14 via the bit stream 16. In detail, the communication system 11 54 can be a bidirectional data system, wherein the combination wheel/receiver i 9 receives from the portable Mp3 The bit stream stream 17 of the player 45, which also transmits the bit stream 16 to the headphone 14. It is applied to the audio device 34 and used to provide selectable in the bit stream 16 = 106l24.doc -75 - 1335154 The speaker receives one or more audio channels. In this embodiment, the extended-range MP3 player 45 can be used in the environment of the communication system 1154 to provide one of the audio channels on the headset 14. Or, portable MP3 playback The transmitter 18 on the unit 45 can be configured to provide a bit &amp; stream in the form received and directly decoded by the headset 14. In this embodiment, a portable Mp3 player can be used in the vehicle, for example, when the motor has been turned off. 45 to mention in the environment of system 1154 For audio, without the need to operate an audio device or transmitter/receiver 19. In this embodiment, the cassette player 45 is used with any headset 14 from the communication system w without the rest of the system. In another alternate embodiment, two configurations may be combined such that the portable MP3 player 45 is selectively operable to provide audio directly to the headset μ or via a channel included in the bitstream 16 Audio. In this configuration, an alternative is provided, in which the bit stream 17 can only be decoded and reproduced via the headset 丨5, which does not have to be a response bit stream 6. This configuration may be desirable for use with the headset 1 5 Provide opportunities for private listening, whether in system 11 or elsewhere. In a variant, this configuration may not provide a bit stream 17 suitable for direct reception by the earphone 14, thereby reducing the likelihood that the earphone 14 may be removed from the environment of the system for use elsewhere. In another implementation In the example, the bit stream 17 can be recorded in a memory or hard disk associated with the audio device 34 for later playback. The present invention has been described in accordance with the requirements of the patent regulations, and those skilled in the art will understand how to The invention disclosed herein is subject to change and modifications in accordance with the specific requirements or conditions of the invention. The changes and modifications can be made without departing from the scope of the invention as disclosed and claimed. Referring now to Figure 28, a high level block diagram of system u 60 illustrates an RF receiver automatic switch 1162 for input to multiple audio input sources (such as audio input 1164 and audio η input 1166) and a driver driver for driving LED source 1170. Use between 1168. In the positive f operation t, the _ switch ι 62 applies the audio from the sources 1164 and 1166 (and others, if any) to the transmitter drive 1168, which drives the LEDs 11 70 to carry the carrier on the source The light of the information of the raw audio. The light can be modulated by the analog audio signal, or the optical usable number: the audio signal indicates the encoding. The light generated by the LED 117 应用于 is applied to the wireless receiver 1172, which can be a pair of headphones. The switch 1172 includes a channel selection switch 1174' that allows the user to selectively listen to the audio channels -» The system 1160 can also include a microphone 1176 connected to the selective 1117 transmitter 1178. The selective RF transmitter 1178 includes A selector switch 118A operating in a first location (such as location 1182) to apply audio to a mobile phone or similar device and from a mobile phone or the like to the transmitter driver 1168° select switch 118, or second A location (such as an announcement or paging location 1184) operates to apply audio to the rf automatic switch 1162 via the transmitter 1178. In normal operation, audio from the microphone is applied to a mobile phone or similar device. (4) 28, the microphone user can operate the switch _ to position 1184 to cause the audio to be replaced by an audio source (such as source 1164). And the audio of 1166) is applied to the transmitter driver 1168 via the _receiver automatic switch 1162. In this mode of operation, the microphone user can directly use the bait to talk to the earphones to make For example, the system U60 can be used in a vehicle in which the one or more passengers are listening to an audio channel that has been selected from the source 9 of the vehicle available. The vehicle driver can use the microphone (such as for the service) "Beginning with the built-in microphone of the phone") "Speak on the mobile phone or choose the building" to advertise the passengers selectively without having to ask the passenger to take off the headset.

The RF transmitter 1178 can normally be in a shutdown condition in which the audio from the audio 1 1164 and the audio n 1166 is combined in the transmitter driver "μ, which operates as a signal processor to provide the wireless signal provided by the LED 117: sequence digits The bit stream is modulated, which can be an optical transmitter or a transmitter operating at other frequencies. The digital signals transmitted by the LED 117G are in a sequential bit stream format and are received by - or a plurality of receivers 1172. Normal operation of the local The setting selection switch H74 can be used to manually select - or a plurality of audio inputs, such as a single voice input or a pair of stereo input inputs. In the on condition, the heart transmitter 1178 can be operated such that in the switch position ^ 1184, The audio from the microphone can be applied to all of the audio channels 1 through n provided by each of the plurality of receivers 1172 via the transmitter driver 1168. As a result, the pilot or bus driver or similar main operator can operate the switch 1180 to the switch position! } 8 2 and make an announcement to all audio channels that receive the credit 1172. The receiver ι 72 can be a plurality of headphones or its chirp sound generating device. Each person listening to one of the selected receivers 1172 will therefore hear the pilot or other announcement without having to consider which audio channel the receiver switch 1 1 74 selects. Alternatively, the audio from the microphone 1176 can be applied to one of the pre-selected sub-groups of the audio channels 106124.doc 78 · 1335154 (even a single channel only), and the control signals contained in the signals transmitted by the LEDs 1170 will cause the receiver i 172 selects a predetermined audio channel such that an announcement made with microphone 176 is provided to all listeners. In addition, other sources of audio (such as pre-recorded messages) may be applied to the receiver switch H62 (instead of or in addition to the microphone 1176) via the RF transmitter 1178 to enable such pre-recorded announcements for all listeners. There is no need to consider the audio channel selection that can be made by the user of each receiver 1172. Alternatively, the pre-recorded messages or audio from another source may be provided directly to the receiver switch 1162 without the RF connection. Some receivers 1172 can be used by users who do not have to hear pre-recorded announcements. In such cases, the control signal can be used to select a predetermined channel on which the announcement is made only in one of the receivers 172 and not in the other subgroups. The switch position 1184 for allowing the pilot or driver to make an announcement over the audio provided on the normally selected audio channel can be considered a primary setting because all of the channels can be selected by the operator or user of the receiver 1172. Audio on at least a subset of the channel or channel. Master volume setting 1 1 85 can also be used as the main setting. Receiver 丨 72 may conveniently include a volume setting specific to each recipient, such as local volume adjustment setting 1186, which is intended to be used by the operator of receiver 11 7.2 and used for the benefit of the operator, however, In many cases, the master volume setting provides additional benefits. The main 3 setting 1185 provides control of the minimum, maximum or current volume settings for all or a subset of all receivers 1172 or receivers 11 72, thereby causing selection of the receiver with respect to the selection of the receiver. The control code of I06l24.doc -79· 1335154 is used to change the selected volume setting 丨186 from the convenient location. For example, when the receiver 1172 is used in a home or group situation, the tone set 夂 1185 can be used to transmit control signals via the transmitter driver 1168 to all of the receivers 1172, one of the selected subsets of the receivers 1172 or each A separate receiver 1172 is provided to change the local volume setting 丨丨% in order to limit the maximum available volume from one or more of the particular receivers U 72. In this way, parents can choose to limit the maximum volume of music that can be used by children wearing headphones to a safe level to protect their hearing. Similarly, when the receiver 1172 is a headset that can be used by different people, the master volume setting ι ΐ 85 can be used to protect subsequent users from the high local settings selected by the previous user. The master volume setting 11 85 can also be used to notify the switch position 丨丨 84 to reduce the volume of the audio provided by the one or more receivers 1172 so that the user of the receiver 1172 can hear the announcement audio provided by another system. . As an example, for example, on an airplane and in a similar environment (GetHng), some passengers can choose a very low volume setting to allow them to fall asleep while listening to music. Occasionally, the pilot may need to be allowed to change the settings to吏ί[7] The special receiver can still be heard by setting the special receiver 11 7 2 to the low volume level. More generally, passengers in aircraft and similar environments can use the local tone setting 1186 instead of the close switch to turn off the receiver U72. Periodically, perhaps before each flight, it may be advantageous to use the master volume setting 11 8S or its automatic subgroup to assign each of the receivers 172 to a weight of 8 6 a. The minimum setting for comfort is such that the next user will hear at least the selected volume of the minimum volume when wearing the headset or another receiver 11 72. 106124.doc •80· 丄=疋(10) can also be used to control the selected receiver channel of the receiver u72. It corresponds to allowing the selected user to listen to the selected audio 1! Because of the example f, the headset can be used. The receiver provides (4) passengers, but the (4) signal transmitted by the driver (10) can block the selected

::: To correspond to a movie or other channel that you need to pay to listen to. Females who receive the payment can then use the master volume setting to connect to the movie channel for a specific user. Similarly, the master volume setting = 1 is used in an environment such as a movie theater for language translation, or it is available in the library environment for the audio guide to restrict access to the selected channel - Appropriate payment or other permitting mechanism. [Simple diagram of the diagram] Figure 1 is a block diagram of the wireless headset system. Fig. 2 is a block diagram of a wireless earphone system 1() in which (4) is combined with a signal. 3 is a block diagram of an embodiment of a data stream format for use in a wireless headset system, such as the wireless headset system 1G described in FIGS. 1 and 2. 4 is a block diagram illustrating one embodiment of a receiver or earphone unit, such as the earphone receiver unit 14 described in FIG. FIG. 5 includes a top view and a front view of one embodiment of a multi-channel headset for use in system 10. FIG. 6 depicts a functional block diagram of the transmitter device 500. Figure 7 depicts the hardware block diagram of the encoder of the transmitter device 5 of Figure 6 Figure 8 Figure 8 shows the function of the clock and pulse phase phasing circuit 628 of the transmitter device 5 I06l24.doc -81 - 1335154 Figure 2 is the functional input diagram of the input audio conversion module of the transmission device. The functional block diagram of the IR module transmitter 634 for transmitting the H device: the jog and the transmitter device 5. . The configuration of the transmission data input used together. Figure 12 depicts a mechanism that can be used with the transmitter device 500. Use the digital data transmitter device together. Figure 14 is a functional block diagram of the primary receiver 702 of the receiver device 70. Figure B is a functional block diagram of the receiver device 70 〇 UR receiver 714. Figure 6 is a functional block diagram of the data recovery circuit η 6 of the data receiving device. The power of the large module 722 is shown as a DAc of the receiver split 7 and an audio discharge block diagram. Functional Block of Receiver 704 Figure 18 is a secondary diagram of receiver device 7A. Fig. 19 is a diagram of a vehicle 8 〇 配备 equipped with a communication system ± 糸, first 802. Figure 20 is a diagram of another vehicle 800 equipped with a communication system, 糸., 801, which has additional features superior to the &lt;car_level 8 〇 所示 shown in Figure 19. L06124.doc -82· 1335154 Figure 2 1 is a diagram of a vehicle 900 equipped with a communication system 90 1 Figure 22 is a diagram of a vehicle equipped with a wireless pass §fl (the vehicle 988 of the system 991; and Figure 2 3 is equipped with a wireless communication system 1 Figure 1 is a schematic diagram of an alternative configuration in which a separate wireless receiver/transmitter is independently associated with a separate earphone receiver that can include a transmitter Communication Figure 25. is a schematic diagram of another embodiment in which one or more wireless receivers/transmitters can be positioned behind a vehicle headliner that is transparent to radiation used in a wireless system. Figure 26 is a diagram of a wireless computer speaker or headphone system. Figure 27 is a diagram of a wireless audio distribution system including a portable audio source. Figure 28 is a block diagram of an alternative configuration in which an The receiver is inserted between a plurality of audio sources to cause the audio received from the RF source to be played on the wireless earphone, and the master volume setting can be used to change the local volume setting in the selected receiver. [Main component symbol description] 1L Channel 2L channel 2R channel 3L channel 3R channel 4L channel 4R channel 10 wireless headset system I06l24.doc -83- 1335154 12 transmitter subsystem 13 transmitter subsystem 14 headphone receiver unit 16 infrared (IR) or radio frequency (RF) signal 17 bits Stream 18 IR Transmitter Section 19 Transmitter/Receiver 20 LED Diode 22 IR Transmitter Driver 24 Digital Signal Processor Encoder and Controller 26 Host Controller 27 Digital Signal Processor Encoder and Controller 28 Digital Signal Processing Encoder and Controller 30 Digital Signal Processor Encoder and Controller 32 Signal Combiner/Multiplexer 34 Audio Device 36 Audio Level 38 Line 1 Source 40 Line 2 Source 42 Stereo Channel Circuit 44 MP3 Player 45 Portable MP3 Player 46 audio level 48 line 3 source I06124.doc -84- 1335154

50 line 4 source 52 stereo channel circuit 54 new unit add-on 56 line 5 source 58 line 6 source 60 stereo channel circuit 62 legacy adapter 64 analog audio input line 7 66 analog audio input line 8 68 stereo channel circuit 70 IR reception 72 IR Receive Signal Processor 74 Decoder 76 Digital Signal Processor 78 Switch Selector 80 Headphone 81 Left Ear Speaker 82 Power Control Signal 83 Right Ear Speaker 84 Battery System 86 Transmit Signal/Packet 87 Header Section 88 Data Section 89 Words Group I06124.doc -85 - 1335154 90 Space 91 block 92 Pre-program code/unique identification code 93 Data offset value 94 Offset part 95 Data block 96 Control block 97 Data filler part 98 Correction part/end block /terminal block 99 tail 100 gap 101 correction part 102 control code part 103 block 104 block 106 code detector 108 delay counter 110 interrupt switch 112 synchronous detector 114 phase-locked loop circuit 116 rewritable memory 1 18 multi-channel headphones 120 left earphones 122 right earphones I06l24.doc ·86· 1 335154

124 headband 126 front speaker 128 center speaker 130 rear speaker 132 effective aperture 134 effective audio path 500 audio transmission device 600 digital signal processor 602 digital audio input stream 603 digital audio input stream 604 digital audio input stream 605 digital audio Input Stream 606 Multiplexer 608 Multiplexer 610 Signal 612 Signal 613 Sequence 614 Direct Memory Access Buffer 615 Sequence 埠 616 Direct Memory Access Buffer 618 Analog Digit Converter 619 Analog Digit Converter 620 Analog Digit Conversion 621 analog digital converter 106124.doc ·87· 1335154 622 input audio conversion module 623 audio module 624 audio module 625 audio module 626 code 628 clock phasing adjustment circuit 630 start / program memory 63 1 line driver 632 Power Supply 633 Constant Digital Data Stream 634 IR Transmitter Module 638 Signal 639 Signal 640 DC Bias Circuit 641 Input > Yong Wave Protection Circuit 642 Low Pass Filter 643 Analog Digital Converter 650 IR Driver Circuit 65 1 Infrared Driver, Bias and control 652 Transmitter 660 Main clock 661 Sequence clock 662 Left/Right clock 663 multiplexer clock I06l24.doc -88- 1335154 666 Clock buffer 667 Clock divider 668 Clock phasing circuit 670 Hold buffer 671 Hold buffer 672 Hold buffer 673 Hold buffer 700 Receiver device or headphone unit 701 IR signal 702 Primary receiver 704 Secondary receiver 710 Digital signal processor 711 Sequence 712 IR data stream 713 Sequence 埠 Transmitter 714 IR Receiver/Automatic Gain Control Circuitry 716 Data Clock Recovery Circuitry 718 User-Selectable Switch and Indicator Control i 719 External Switch and Indicator 720 IR Data Input 721 Digital Data Stream 722 Digital Analog Converter and Audio Amplifier: 724 Analog Signal 730 Startup / Program Memory Circuitry I06124.doc 89- 1335154 740 Power and Voltage Supervisor Circuitry 750 Headphone Preamplifier 759 Power Supply 760 Switching Power Supply 761 DC Power 762 On/Off Switch 770 IR Preamplifier 771 Final Amplifier 772 Data correction level 773 automatic gain control circuit 774 preamplifier gain /bias signal 775 edge detector 776 crystal oscillator 777 inverter / buffer 778 buffer 780 analog converter 781 low pass filter wave 782 audio amplifier 800 vehicle 801 communication system 802 power system 803 DVD player 804 wiring device 805 wireless communication device 106124.doc -90- 1335154

806 Transmitter 807 Wire 809 Top lining 810 Repeater 811 Soft material 813 Aesthetic material 815 Hollow space 8 17 Narrow space 819 Second transparent cover 820 Plug-in unit / Communication system 822 Adapter module 823 Wire 824 Xenon lamp 826 Transmitter / Receiver 827 Wire 830 Camera / Proximity Sensor 83 1 Video Display 832 DVD Player 833 Monitor 834 MP3 Player 835 Microphone 836 Game Control Device 837 Video Game Player 838 Video Display Device I06124.doc -91 * 1335154 839 IR Receiver 842 Speaker 900 Vehicle 901 Communication System 920 Global Positioning System Unit 921 Communication Subsystem 922 Auxiliary Audio Device 923 Communication Module 924 Vehicle Central Processing Unit 926 IR Receiver/Transmitter 933 User 935 User 936 Remote Controller 940 Wireless Speaker 941 IR Receiver / Transmitter 942 Subwoofer 950 CD Inverter 952 Tire Pressure Monitor 980 Two Way Headphone 982 IR Receiver / Transmitter 984 Microphone 988 Vehicle 990 Franchise Bus 991 Wireless Communication System 106l24.doc ·92 · 1335154 992 IR Module 1000 Wireless Communication System 1010 Building 1011 Room 1012 Room 1013 Room 1020 Communication Network 1022 Cable Network 1024 Cable Data Machine 1030 Transceiver 1032 RF Signal 1034 RF Antenna 1 036 RF Signal 1040 Encoder/Decoder 1050 IR Transmission / Receiver 1052 IR Signal 1060 Personal Computer 1062 IR Signal 1070 IR Transmitter / Receiver 1080 Encoder / Decoder 1100 Home Theater System 1110 Decoder 1120 IR Transmitter 1122 IR Signal 106124.doc -93 - 1335154 1130 Remote Speaker 1140 Communication System 1142 Computer 1 144 Speaker 1146 Speaker 1148 Cable 1150 Listener / Signal Input Connector 1152 Volume Adjustment and Control Button / Computer 1154 Communication System 1160 System 1162 RF Receiver Auto Switch 1164 Audio 1 1166 Audio η 1168 Transmitter Driver 1170 LED Light Source 1172 Receiver 1174 Channel Selector Switch 1176 Microphone 1178 RF Transmitter 1 180 Selector Switch 1182 Position 1184 Announce/Paging Location 1185 Master Volume Setting 1186 Local Volume Adjustment Setting 106124.doc -94-

Claims (1)

1335154, Amendment to the Patent Application No. 094138686, the Chinese patent application scope replacement (June 99) X. Patent application scope: 1. A wireless audio distribution system, comprising: a signal processor, which will be plural The stereo audio input pair and the control code are combined into a sequence of digital bit streams; a passer is used for wirelessly transmitting the sequence of digital bit streams; and a plurality of receivers are corresponding to the transmitted sequence of digital bit streams One pair of the pair of stereo pairs is selectively generated by each receiver according to the control code therein; - the local setting selector 'is used to cause each receiver to be generated by the local machine. And determining, by the selector, the audio input in the array of bit streams; and the main sigh selector 'which causes a different audio input to be added to the digital bit stream and the operation of the local setting selector The change will be made so that the receiver or the like generates the different audio without having to consider the selection made by the local setting selector associated with each of the plurality of receiving benefits. 2. The wireless audio distribution system of claim 1, further comprising: a microphone for receiving the different audio; a radio frequency transmitter for transmitting the different audio; and a radio frequency for receiving the transmitted different audio And a receiver that responds to the master setting selector for causing the same audio to be added to the digital bit stream. 3. As in the June 2 wireless audio matching system, the main setting selector is associated with the microphone as a microphone on switch. 106124-990628.doc. The wireless audio distribution system of claim 1, wherein the primary setting selector causes the different audio input to be replaced by the signal processor as one of the plurality of audio inputs of the digital bit stream or Multiple. 5. The wireless audio distribution system of claim 1, wherein the primary setting selector causes the different audio input to be added to the digital bit stream and causing the control code to include control for causing the receiver to select the different audio code. 6. A wireless audio distribution system, comprising: a signal processor that combines a plurality of audio inputs and control codes into a sequence of bit-bit streams; a transmitter for wirelessly transmitting the sequence of digital bit streams; a receiving benefit, which should be transmitted through the sequence of digital bit streams to selectively generate audio according to 5 of the control codes; a local setting selector for causing the receiver to be generated by the local device One or more audio inputs of the plurality of audio input streams selected by the selector; a plurality of additional receivers, each of which should be captured by the transmitted sequence digits, and each having an independent Operating local setting selector for causing the receiver associated therewith to generate the audio selected by the local setting selector; and Λ - main setting selector 'for selective actuation The operation of the local setting selector "causes the receivers to generate audio information about a different audio input that is not selected by the local setting selector, for the main setting The selector causes the different audio to be applied by I06124-990628.doc 1335154 to generate the plurality of audio inputs in the digitized bit stream such that the different audio system is generated by each of the plurality of receivers without regard to consideration A selection made by the local setting selector associated with each of the plurality of receivers. A wireless audio distribution system comprising: a signal processor that combines a plurality of audio inputs with a control code a sequence of bit-bit streams; a transmitter 'for wirelessly transmitting the sequence of bit-bit streams; a receiver' which is responsive to the transmitted sequence of bit-bit streams for selective generation based on the control code therein Audio; a local setting selector for causing the receiver to generate audio for one or more of the plurality of audio inputs in the sequence of bitstreams selected by the local setting selector; An additional receiver, each of which should be tuned by the transmitted sequence digits, and each has an independently operable local setting selector, the machine has no choice Used to cause the receiver associated therewith to generate the audio selected by the local setting selector; and a master setting selector for selectively changing the operation of the local setting selector to cause the receivers Generating audio about a different audio input selected by the local setting selector, wherein the primary setting selector causes the different audio to be added to the digital bit stream and causing the control code to cause the different audio Each of the plurality of receivers is generated without considering the selection of 106124-990628.doc 335154 selected by the local setting selector associated with each of the plurality of receivers 8. A wireless audio distribution system, comprising: a signal processor that combines a plurality of audio inputs and control codes into a sequence of bit-bit streams; and a transmitter that wirelessly transmits the sequence of digital bit streams; - the receiver 'receives the transmitted sequence of bit streams to selectively generate audio in accordance with the control code therein; a local setting selector that is used to cause The receiver generates audio about one or more of the plurality of audio inputs in the sequence of digit bit streams selected by the local setting selector; a plurality of additional receivers, "returning the sequence number that should be transmitted Bit turbulent, and each having an independently operable local setting selector, the local setting selector causing the receiver associated therewith to generate the audio selected by the local setting selector; and a master setting selection Means for selectively changing the operation of the local setting selector to cause the receivers to generate audio regarding different audio inputs not selected by the local setting selector, wherein the main setting selector Causing the different audio to be added to the digital bit stream and causing the control codes to cause the different audio system to be generated by a subset of the plurality of receivers without regard to each of the plurality of receivers Associated with the selection made by the local setting selector. 9. A wireless audio distribution system, comprising: a signal processor that combines a plurality of audio inputs and control codes into a sequence of 106124-990628.doc 1335154 a sequence of bit digits; a transmitter 'for wireless transmission of the a sequence of bit-bit streams; a receiving benefit that should be transmitted through the sequence of bit-bit streams to selectively generate audio in accordance with the control code therein; a local setting selector 'which is used to cause the receiver to generate By means of the local setting selector, one or more of the plurality of audio input streams in the serial bit stream selected by the selector; a plurality of additional receivers whose respective sequences should be transmitted through the sequence of digits Each having an independently operable local setting selector for causing the receiver associated therewith to generate the audio selected by the local setting selector; and a main setting selector for Selectively changing the operation of the local setting selector to cause the receivers to generate sounds for different audio inputs not selected by the local setting selector The primary setting selection further includes: a button switch associated with a microphone, the activation causing the different audio to replace the plurality of audio inputs in the sequence of digitized bit streams such that when the button switch is activated, At least some of the plurality of receivers generate the different audio without having to consider the selection made by the local setting selector associated with each of the plurality of receiving benefits. Ίο. A wireless audio distribution system, comprising: a signal processor that combines a plurality of audio inputs and control codes into a sequence of bit-bit streams; 106124-990628.doc -5· a transmitter' Wirelessly transmitting the sequence of bit streams; the receiver, which is responsive to the sequence of bit streams of the pass, to selectively generate audio in accordance with the control code therein; the local device s is further operable to cause the reception Generating at least one selected audio for the plurality of audio inputs; and a local volume control selector for setting a volume at which the volume is generated in the control code The control code sets the maximum volume of the audio produced by the receiver without regard to the selection of the local setting selector. 11. A wireless audio distribution system, comprising: a signal processor that combines a plurality of audio inputs and control codes into a sequence of bit-bit streams; a transmitter that wirelessly transmits the sequence of digital bit streams; a receiver that is responsive to the transmitted sequence of bit streams to selectively generate audio in accordance with the control code therein; a local setting selector for causing the receiver to generate information about the local And setting a sound of one or more of the plurality of audio input streams selected by the selector; and a main setting selector associated with the signal processor for selectively changing the original The machine sets the operation of the selector to cause the receivers to generate audio regarding different audio inputs that are not selected by the local setting selector. 12 - A wireless audio distribution system, comprising: a signal processor, which combines a plurality of audio input and control codes into a 106124-990628.doc 1335154 sequence of digital bit streams; a transmitter for wireless transmission a sequence of bit-bit streams; a receiver that is responsive to the transmitted sequence of bit-bit streams to selectively generate audio in accordance with the control code; a local setting selector operable to cause the receiver Generating a selected audio for at least one of the plurality of audio inputs; and a master setting selector associated with the signal processor for selectively changing an operation of the local setting selector to cause the receiving The device generates audio about a different audio input, rather than the plurality of audio inputs that are selectable by the local setting selector. 106124-990628.doc