WO2007076517A2 - Chargeur de batterie, emetteur fm, emetteur/recepteur, et generateur rds de combinaison - Google Patents

Chargeur de batterie, emetteur fm, emetteur/recepteur, et generateur rds de combinaison Download PDF

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Publication number
WO2007076517A2
WO2007076517A2 PCT/US2006/062635 US2006062635W WO2007076517A2 WO 2007076517 A2 WO2007076517 A2 WO 2007076517A2 US 2006062635 W US2006062635 W US 2006062635W WO 2007076517 A2 WO2007076517 A2 WO 2007076517A2
Authority
WO
WIPO (PCT)
Prior art keywords
transmitter
rds
signal
hybrid electronic
electronic accessory
Prior art date
Application number
PCT/US2006/062635
Other languages
English (en)
Other versions
WO2007076517A3 (fr
Inventor
Arthur L. Cohen
John R. Haggis
John Glissman
Original Assignee
Aerielle Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aerielle Technologies, Inc. filed Critical Aerielle Technologies, Inc.
Publication of WO2007076517A2 publication Critical patent/WO2007076517A2/fr
Publication of WO2007076517A3 publication Critical patent/WO2007076517A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal

Definitions

  • the present invention relates generally to portable consumer electronic devices, and more particularly to a novel mobile accessory combining a battery charger, FM transmitter, and transceiver.
  • a consumer electronics device combining a cigarette lighter adapter phone adapter/charger (CLA), a hands free audio interface for transmitting a signal to a headset, speaker, or transceiver, an FM transmitter for a phone-based media player, and a radio data system for the FM transmitter.
  • the CLA includes a plug and a programmable switching/charging regulator that draws power from a vehicle cigarette lighter socket.
  • the CLA is connected to a phone and provides means for sending a signal to a wireless or wired headset and/or microphone or simply a speaker.
  • the FM transmitter generates a multiplex composite signal (along with RDS) which is modulated and controlled to convey stereo music audio from the media player in the mobile phone to the FM radio in the automobile.
  • the RDS generator generates a subcarrier conveying RDS information and displays textual information on the automobile radio display.
  • FIG. 1 is a schematic block diagram showing the functional elements of the mobile hands free, charger, transmitter, and transceiver of the present invention
  • FIG. 2 is a schematic block diagram showing the cigarette lighter adapter portion of the inventive system
  • FIG. 3 is a schematic block diagram showing both a wired and a wireless connection of audio output devices to the cigarette lighter adapter electronics and the transmitter;
  • FlG. 4 is a schematic block diagram of the FM transmitter module of the present invention.
  • FIG. 5 is a schematic block diagram of the radio data system generator portion of the inventive system
  • FIG. 6 is a schematic diagram of the analog FM transmitter
  • FIG. 7 is a schematic diagram of the CPU for the analog transmitter.
  • FIG. 8 is a schematic diagram showing the programmable power supply and audio isolation amplifier.
  • the hybrid mobile accessory device of the present invention includes a unique combination of features which are highly desirable for the new generation of multi-feature mobile phones. It is an all-in-one solution for automotive applications. Referring now to FIG.
  • the functional components and features of the apparatus include: (a) a cigarette lighter adapter (CLA) phone charger 110; (b) a hands free audio interface 200 which transmits a signal to an audio input/output device, such as a wired (mounted or headset) speaker/microphone 210 or wireless transceiver 220 in a wireless headset 230; (c) an FM transmitter 300 for a phone-based media player 500; and (d) a radio data system (RDS) generator 600 for the FM transmitter.
  • CLA cigarette lighter adapter
  • a hands free audio interface 200 which transmits a signal to an audio input/output device, such as a wired (mounted or headset) speaker/microphone 210 or wireless transceiver 220 in a wireless headset 230
  • an FM transmitter 300 for a phone-based media player 500
  • RDS radio data system
  • the first functional component of the inventive hybrid mobile accessory of the present invention is a cigarette lighter adapter (CLA), which includes a plug 120, a programmable switching/charging regulator 130 that includes voltage setting and signal components 140, and which draws power from a vehicle cigarette lighter socket or accessory socket to provide a variety of mobile phone charging requirements.
  • CLA cigarette lighter adapter
  • the CLA charger may provide 5-12V 150 for charging the phone, and using a fixed linear regulator 160, it may provide 3.6V 160 for powering or charging the FM transmitter and/or transceiver interface electronics.
  • Hands free Audio Interface The inventive hybrid apparatus further provides hands free access to the mobile phone's headset audio interface.
  • the CLA is connected to the phone via a multiconductor cable 240 having a plug 250 for the phone.
  • the CLA then provides means for sending a signal 260 to a Bluetooth, proprietary, or other digital or analog wireless headset/microphone 230, or to a wired headset/microphone 250, or a mounted speaker/microphone 210. Even the wired headset or the car-mounted speaker/microphone require only a single connection to the phone (via the main interface cable) on entering or exiting the car.
  • the wired components stay wired to the CLA portion of the assembly.
  • the FM transmitter module 300 multiplexes left and right audio signals 310, 320 using filters and limiters 330, 340, and mixers 350, 360, as is well known, and the resulting sidebands 370 are combined with a pilot carrier 380 in a combiner 390 to form a multiplex composite signal 400.
  • the multiplex composite signal (along with RX)S) is then modulated by a modulator 410 and tightly controlled by a closed loop frequency control system, such as a phase locked loop filter 420.
  • a closed loop frequency control system such as a phase locked loop filter 420.
  • the purpose of this component is to convey stereo music audio from the media player in the mobile phone to the FM radio in the automobile.
  • the functionality is also illustrated in more detail in the wiring schematic 700 of FIG. 6.
  • RDS Generator Referring now to FIG. 5, the RDS (Radio Data System) generator 600 generates a 57 KHz subcarrier 610 conveying RDS information.
  • the RDS signal data is formatted, corrected, encoded, and biphase symbols are generated using a CPU 620.
  • Carrier modulation is further accomplished with the CPU or through analog means 630.
  • the output is filtered 640 and mixed 650 with the stereo audio multiplex audio for modulating the transmitter RF.
  • FIGS. 6-8 are schematic diagrams illustrating the preferred embodiments of the voltage regulators and FM transmitter 700, CPU for the analog transmitter 800, and programmable power supply and audio isolation amplifier 900.
  • FIG. 6 begins with FIG. 6, what is shown is a schematic diagram of an analog FM transmitter according to the present invention.
  • FIG. 6 has two principal sections: DC power input and regulation circuits shown on the left side of the schematic; and an RF transmitter circuit comprising the remainder of the illustration.
  • the DC power for the transmitter circuits is derived from the +12V DC input received from Jack Jl.
  • the +12V DC from jack Jl is passed serially through fuse Fl before being passed through the filter comprised of capacitor C25 and ferrite bead FB3.
  • the power is passed in parallel through resistors R20 and R22. From R20 the power passes through LED D3 and resistor Rl 8 to pin 1 (input) of voltage regulator U2. . From R22 the power passes through LED D2 and resistor Rl 8 to pin 1 (input) of voltage regulator U2.
  • Capacitor C31 filters the power arriving at pin 1 of voltage regulator U2.
  • Voltage regulator U2 uses a feedback loop to regulate its output voltage.
  • Capacitor C34 provides an alternating current bypass for voltage regulator U2.
  • Capacitors C28, C29 and C9 provide RF filtering of the +3.3V DC output power of voltage regulator U2.
  • Transmitter Ul 's phase locked loop (PLL) circuit receives the regulated +3.3V DC through pin 12 of transmitter Ul .
  • the regulated +3.3 V DC power is also supplied, via ferrite bead FB2, to pin 8 of transmitter Ul .
  • jack J4 pin 1 receives an analog input signal representing the left half of a stereo audio signal.
  • jack J5 pin 1 receives the right half of the same stereo audio signal.
  • Jack J7 provides a common ground for these audio inputs.
  • the left half of the stereo audio is passed through padding resistor Rl, and then through the filter network comprised of resistor R2 and capacitors ClO and C8. After this filtering is accomplished, the left half of the stereo audio is passed into transmitter Ul via pin
  • the pre-emphasis and low-pass filtering values are set for the left half of the stereo audio signal by the values of capacitors C2 and C3, respectively.
  • the pre-emphasis and low-pass filtering values are set for the right half of the stereo audio signal by the values of capacitors C 16 and C 17 respectively.
  • the left and right halves of the stereo audio signal are each modulated (via an internal multiplexer and modulator circuit of transmitter Ul) onto the transmitter RF signal.
  • the operating frequency of Transmitter Ul is determined by an internal oscillator whose frequency is set digitally based on instructions received via the serial data bus comprised ofpins 15, 16 and 17 of transmitter Ul.
  • An internal local oscillator of transmitter Ul uses (via pin 9) external components capacitors C 19, C21 and C22, inductor Ll, diode Dl and resistor Rl 6 to determine the operating frequency of the internal local oscillator.
  • Crystal Yl provides a clock stabilization and frequency determination component to the internal processor of transmitter Ul via pins 13 and 14 of transmitter Ul.
  • the external components used by transmitter Ul 's internal PLL circuit include resistors R3, R4, R6, R8, Rl 1, R12, R19, R24, capacitors CI l, C12, C23, C26, C30, C32, and transistor Ql .
  • the modulated RF output of transmitter Ul is sent to resistor R5, after which the RF signal is filtered by capacitor Cl 3 before being passed through DC isolation capacitor C7 and then on to RF output jack J8 (pin 1).
  • the RF output is filtered using capacitor Cl.
  • FIG. 7 what is shown is a schematic diagram of a central processing unit (CPU) for controlling the activities, and interfacing with the analog transmitter of the present invention.
  • CPU central processing unit
  • FIG. 7 there is a microprocessor U4 that has a clock reference crystal Y2 connected across pins 8 and 9 of microprocessor U4.
  • Microprocessor U4 receives (at pins 1 and 64) +3V DC power, filtered by capacitor C36.
  • An external programming interface is provided to microprocessor U4 via pins 54 through 57. These pins are connected to programming tool via jack J3.
  • An auto-reset circuit comprised of resistor R33 and capacitor C35 cause the microprocessor to reset when the input voltage drops below a predetermined value.
  • a 3-wire serial data interface is used by microprocessor U4 to communicate with FM transmitter Ul (as seen in FlG. 6).
  • Pins 61 (CE), 59 (clock) and 60 (data) of microprocessor U4 (in FIG. 7) are connected to pins 15 (CE), 16 (clock) and 17 (data) of transmitter Ul (in FIG. 6), thus forming a serial communications bus between the two devices. It is through this serial communications bus that microprocessor U4 (in FIG. 7) controls the activities and operation frequencies of transmitter Ul (in FIG. 6).
  • Microprocessor U4 is in communication, via pins 36, 37, 38, 39, 12, 13, 14, 15, 16, 17, 18, 19, 20 and 21, with pins 1 through 14 of liquid crystal diode (LCD) display assembly LCDl . Through this interface, microprocessor U4 controls what is displayed by LCDl . [0037] Microprocessor U4 receives as input, via pins 45, 44, 45, 34, 33, 32, 31 and 30, a set of option conditions as set by the presence or absence of jumpers JPl through JP16. These jumpers are used, in this implementation example, to determine the frequency of operation for a transmitter.
  • LCD liquid crystal diode
  • Microprocessor U4 also receives as input, via pins 49, 50, 51, 52, and 53, a set of momentary-on pushbutton switch conditions as determined by whether any of switches Sl through S5 are being pressed. Pins 49 through 53 of microprocessor U4 are normally pulled 'low' via switches S5 through Sl respectively.
  • a +3V DC power source is connected to one end of resistors R32 to R28.
  • resistor R28 When switch Sl is pressed (removing ground from pin 53 of microprocessor U4), resistor R28 is used to pull high pin 53 of microprocessor U4.
  • resistor R29 is used to pull high pin 52 of microprocessor U4.
  • resistor R30 is used to pull high pin 51 of microprocessor
  • resistor R29 is used to pull high pin 50 of microprocessor U4.
  • resistor R28 is used to pull high pin 49 of microprocessor U4.
  • Microprocessor U4 can detect a change of high/low state at each of these input pins
  • FIG. 8 what is shown is a schematic diagram of the programmable power supply and audio isolation amplifier.
  • Positive (+) 12V DC power arrives at pin 8 of audio isolation amplifier Ul, after being filtered via RC filter network Rl and C5.
  • a radio frequency (RF) signal source is presented at terminal E5 of the circuit.
  • the right and left audio sources from a stereo input are separately presented at terminals E7 and E8 respectively.
  • AU of these input signals use terminal E6 as their common ground.
  • the ground path has ferrite bead FBI inserted to block RF signals from being fed through a ground loop into the audio isolation amplifier Ul.
  • RC network R2 and C6 before being passed into audio isolation amplifier Ul on pin 3. Then, after being amplified by audio isolation amplifier Ul , the signal is passed out pin 1 of audio isolation amplifier Ul and through DC isolation capacitor C3, and finally out through terminal E3 so it is passed to an input of analog FM transmitter 700.
  • a programmable power supply circuit has two input terminals. Terminal 12 is used as ground reference for the power supply. Terminal 11 is the input source of approximately +12V DC from a vehicle power supply.
  • the +12V DC input is passed through an RF filter network comprised of ferrite bead FB2, capacitor C9 and capacitor CI l. After filtering, the +12V DC is supplied as an input to voltage regulator U2.
  • the regulated output voltage being fed through ferrite bead FB3 to terminal E9 is fed back to pin 6 of voltage regulator U2 via the resistor-divider network comprised of R5 and R6.
  • Voltage regulator U2 uses this feedback to detect variance in the output voltage from the expected value. If any variance occurs, the output voltage is adjusted to bring the value back to the expected value.
  • the values used in the RC network comprised of resistor R4 and capacitor arc what Cl 2 determine the regulated output voltage.
  • Zcncr diode Dl, along with capacitor ClO provide damping of voltage spikes caused when magnetic field of inductor Ll suddenly collapses.
  • hybrid analog/digital and fully digital versions of the FM transmitter are possible.
  • the hybrid version of the present invention integrates the stereo audio multiplexer and pilot generation functions into a DSP, with composite multiplexed audio output to the RF modulator.
  • the fully-digital version extends the DSP functionality from the multiplexer through the RF generation and modulation, with output of the actual analog FM radio signal.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

La présente invention concerne un dispositif électronique combinant un chargeur/adaptateur de briquet, une interface audio mains libres pour la transmission d'un signal vers un casque d'écoute, un haut-parleur, ou un émetteur/récepteur, un émetteur FM pour un lecteur de support téléphonique, et un système de données radio pour l'émetteur FM.
PCT/US2006/062635 2005-12-27 2006-12-27 Chargeur de batterie, emetteur fm, emetteur/recepteur, et generateur rds de combinaison WO2007076517A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75424805P 2005-12-27 2005-12-27
US60/754,248 2005-12-27

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WO2007076517A2 true WO2007076517A2 (fr) 2007-07-05
WO2007076517A3 WO2007076517A3 (fr) 2008-02-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771464A (en) * 1986-01-30 1988-09-13 Broadcast Technology Partners FM stereophonic broadcasting system utilizing simultaneous companding and modulation/demodulation
US6163711A (en) * 1997-12-01 2000-12-19 Nokia Mobile Phones, Ltd Method and apparatus for interfacing a mobile phone with an existing audio system
US6459175B1 (en) * 1997-11-17 2002-10-01 Patrick H. Potega Universal power supply
US20050014536A1 (en) * 2003-07-08 2005-01-20 Jeff Grady Modular adaptor assembly for personal digital appliance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771464A (en) * 1986-01-30 1988-09-13 Broadcast Technology Partners FM stereophonic broadcasting system utilizing simultaneous companding and modulation/demodulation
US6459175B1 (en) * 1997-11-17 2002-10-01 Patrick H. Potega Universal power supply
US6163711A (en) * 1997-12-01 2000-12-19 Nokia Mobile Phones, Ltd Method and apparatus for interfacing a mobile phone with an existing audio system
US20050014536A1 (en) * 2003-07-08 2005-01-20 Jeff Grady Modular adaptor assembly for personal digital appliance

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WO2007076517A3 (fr) 2008-02-07

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