Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/06—Receivers
  • H04B1/08—Constructional details, e.g. cabinet
  • H04B1/082—Constructional details, e.g. cabinet to be used in vehicles
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
  • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
  • H04M1/6041—Portable telephones adapted for handsfree use
  • H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
  • H04M1/6083—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system
  • H04M1/6091—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system including a wireless interface
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
  • H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
  • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
  • H04M1/6041—Portable telephones adapted for handsfree use
  • H04M1/6058—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
  • H04M1/6066—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone including a wireless connection
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
  • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
  • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
  • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
  • H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M2250/00—Details of telephonic subscriber devices
  • H04M2250/02—Details of telephonic subscriber devices including a Bluetooth interface

Definitions

• the present invention relates to an assembly of a mobile phone Bluetooth headset and an FM transmitter for vehicles, and, more particularly, to an assembly of an FM transmitter that is capable of transmitting output of mobile communication equipment represented by a mobile phone Bluetooth headset or acoustic equipment, such as an MP3 player, to an FM radio of a vehicle and a Bluetooth headset constructed to be suitably used with the FM transmitter.
• a mobile phone Bluetooth headset or acoustic equipment such as an MP3 player
• Equipment based on various kinds of sounds such as various kinds of mobile communication equipment, MP3 players, digital multimedia broadcasting (DMB) receivers, and Bluetooth headsets accompanied with the same, are being widely popularized.
• DMB digital multimedia broadcasting
• a vehicle has settled down as a necessary article, and therefore, the vehicle has become a space where such electronic acoustic equipment is suitably used.
• the vehicle can provide a field effect, and a battery of the vehicle serves as the sole charge unit requiring no additional expenses during going out. Consequently, the battery of the vehicle is preferably used as a power supply for various kinds of acoustic equipment.
• a vehicle has an FM radio basically mounted therein. Consequently, various kinds of transmitters have been developed which are capable of transmitting a sound outputted from an earphone of an MP3 player or mobile communication equipment, requiring the use of the earphone for low-power consumption, or a Bluetooth headset to the FM radio as a carrier wave such that the sound can be reproduced from the FM radio. Disclosure of Invention
• the FM transmitter of the headset and transmitter assembly according to the present invention is optimally applied to a Bluetooth headset (hereinafter, referred to as a 'headset H') invented and filed by the applicant of the present application on the same date; however, the FM transmitter according to the present invention may be slightly modified such that the FM transmitter can be applied to any kind of headset, and therefore, the FM transmitter and the headset can be provided as a pair and thus constitute the headset and headset and transmitter assembly according to the present invention.
• a Bluetooth headset hereinafter, referred to as a 'headset H'
• the headset and transmitter assembly according to the present invention is constructed such that the FM transmitter optimally cooperates with a Bluetooth headset H, as an independent unit, suggested by the applicant of the present application on the same date, and, in addition, the FM transmitter is also applied to a conventional Bluetooth headset of a general structure.
• the FM transmitter for vehicle constituting the headset and transmitter assembly according to the present invention, is constructed in a stand type structure in which the FM transmitter is mechanically mounted in a cigar jack of the vehicle while being erected, unlike the conventional transmitter.
• the FM transmitter according to the present invention is applied to a headset H of a specific structure. Consequently, the FM transmitter according to the present invention exhibits very convenient con- nectability.
• the FM transmitter according to the present invention provides night illumination, thereby presenting the interior of the vehicle in a beautiful and stylish state.
• the FM transmitter according to the present invention provides improved utility, for example, improved design and visual appearance.
• FM transmitter according to the present invention easily provides an external charge environment.
• FIG. 1 is a perspective view illustrating an assembly of a mobile phone Bluetooth headset and an FM transmitter for vehicles according to the present invention, the mobile phone Bluetooth headset being mounted to the FM transmitter for vehicles;
• FIG. 2 is a perspective view illustrating the use of the headset and transmitter assembly according to the present invention in the interior of a vehicle;
• FIGS. 3 A and 3B are a side view and a front view respectively illustrating the transmitter, which is one of the principal components constituting the present invention;
• FIG. 3 A and 3B are a side view and a front view respectively illustrating the transmitter, which is one of the principal components constituting the present invention;
• FIG. 4 is a perspective view illustrating a frequency setting unit of the FM transmitter for vehicles according to the present invention together with the external appearance of the FM transmitter for vehicles in more detail;
• FIG. 5 is a perspective view illustrating a connector part provided at the FM transmitter for vehicles according to the present invention for allowing an external device, such as a headset, to be connected to the FM transmitter, the connector part being exposed;
• FIG. 6 is a perspective view illustrating an exemplary Bluetooth headset constructed to be suitably applied to the headset and transmitter assembly according to the present invention;
• FIG. 7 is a perspective view illustrating a process for connecting the exemplary
• FIG. 8 is a perspective view illustrating a process for connecting a conventional
• FIG. 9 is an exemplary circuit diagram illustrating a stereo mode of the Bluetooth headset applied to the FM transmitter according to the present invention.
• FIG. 10 is a circuit diagram of the FM transmitter for vehicles according to the present invention.
• FIG. 11 is a perspective view illustrating another use example of the FM transmitter for vehicles according to the present invention wherein an MP3 player, as an external device, is connected to a signal input unit of the FM transmitter. Best Mode for Carrying Out the Invention
• the FM transmitter U for vehicles according to the present invention is an apparatus for transmitting output from acoustic equipment to an FM radio R of the vehicle.
• the FM transmitter U according to the present invention is characterized in that the FM transmitter is constructed in the form of a hardware type housing body, to which a Bluetooth headset is connected such that the Bluetooth headset and the FM transmitter cooperate with each other.
• Circuits of the transmitter such as transmitter codec for mobile communication equipment and a FM frequency generation circuit, are well known in the art to which the present invention pertains, an d therefore, a detailed description will not be described of the circuits of the transmitter excluding the connection relationship.
• the transmitter U for vehicles according to the present invention is basically constructed in a form as shown in FIGS. 1, 3, and 4.
• the transmitter U for vehicles according to the present invention is an insertion type unit that can cooperate with various kinds of headsets H, as shown in FIG. 1, and can be securely inserted into a cigar jack CG of a vehicle C, as shown in FIG. 2.
• the transmitter U for vehicles according to the present invention includes a body housing 10, which is formed approximately in the shape of a cylinder and is manufactured by injection molding. From the lower end of the body housing 10 protrudes a connection terminal 11 for connection to the cigar jack. Consequently, power can be supplied from a battery of the vehicle to the body housing 10 through the connection terminal 11. At the same time, the body housing 10 can be connected to the cigar jack CG, such that the body housing 10 is erected from the cigar jack CG, by the mechanical friction between the connection terminal and the cigar jack when a user inserts the connection terminal 11 of the body housing 10 into the cigar jack CG.
• a general circuit board 20 of the FM transmitter for transmitting a signal to an FM radio R of the vehicle C.
• a ma- nipulation button 12 serving as a multifunction switch for performing a manipulation during a Bluetooth telephone conversation, is disposed at the outside of the body housing 10 in the form of a push switch, which is manipulated by the user.
• the body housing 10 is provided at the upper end thereof with a frequency setting unit, which is connected to a frequency setting circuit mounted on the circuit board 20 of the FM transmitter U.
• the frequency setting unit may be selected among various devices for allowing a user to select a non-overlapping frequency at which a radio wave can be optimally transmitted to the FM radio R of the vehicle C at an area where commercial broadcasting is not served.
• the frequency setting unit may be constructed in the form of a frequency selection device that is capable of selecting a frequency through the use of a slide switch disposed at the side of the body housing 10.
• the frequency setting unit includes a rotary knob 30 mounted at the upper end of the body housing 10 such that the rotary knob 30 can be rotated in a multi-step rotation fashion, and a general selection switch S, as a mechanical multi-step switch, disposed between the body housing 10 and the rotary knob 30 for allowing a user to select one of the previously set frequencies for emergency depending upon the area where the user is currently located.
• a general selection switch S as a mechanical multi-step switch
• the frequency display part is transparently indicated at the outer circumference of a knob body 31 of the rotary knob 30 such that the user can tune the FM radio to a desired frequency.
• a frequency illumination light emitting diode (LED) 15 using an LED lamp is provided at the upper end of the body housing 10, and a transparently indexed frequency selection part 32 is provided at the outer circumference 31' of the knob body 31 of the rotary knob 30. Consequently, it is possible to provide illumination at night through the combination of the frequency illumination LED 15 and the transparent frequency selection part 32, whereby the visual appearance in the vehicle is improved at night, and the aesthetic sense is also improved.
• an acoustic signal input unit for allowing the input of an acoustic signal from the outside.
• the acoustic signal input unit is constructed in the form of a long antenna.
• the acoustic signal input unit is constructed in the form of a pipe-shaped connecting arm 40, which may be hingedly rotated about an arm shaft 45 or integrally fixed to the body housing 10 such that the connecting arm 40 extends toward the user.
• the connecting arm 40 has an antenna wire withdrawn from the circuit board 20 of the body housing 10 mounted therein such that the connecting arm 40 can be as an antenna. Also, the connecting arm 40 has a microphone MC, such as a condenser microphone, as shown in FIG. 4, mounted therein such that a hands-free function can be performed during the use of a mobile phone HP.
• a microphone MC such as a condenser microphone, as shown in FIG. 4, mounted therein such that a hands-free function can be performed during the use of a mobile phone HP.
• the body housing 10 is provided at one side thereof with an input jack K, as shown in FIG. 4 and FIG. 11 illustrating the use of the body housing 10, such that an output jack PJ of a sound output wire W of acoustic equipment, such as various kinds of MP3 players P, excluding the headset H to which the present invention is applied, can be inserted into the input jack K.
• the connector 41 is covered by a protection cap 50 which prevents the introduction of external foreign matter and provides the pleasing aesthetic appearance when not in use.
• the protection cap 50 is constructed in a structure in which the protection cap 50 is hingedly rotated from the upper end of the connecting arm 40, as shown in FIG. 5, by the hinged rotation of a pair of downward-extending hinge arms 51 and 51' about hinge pins 42 and 42' formed at the end 40' of the connecting arm 40, when in use.
• the connector 41 of the connecting arm 40 is exposed to the outside such that a connector HC of a general MP3 player or the headset H shown in FIG. 1 is connected to the connector 41 of the connection arm 40.
• connection hinge part G of the connection arm 40 which is hingedly rotated relative to the body housing 10 for providing a mechanically tight connection force or stopping the connecting arm 40 at the position where the connecting arm 40 is hingedly rotated by the user, and, when load caused by the insertion of small-sized acoustic equipment is applied to the connection arm 40, at the position where the connecting arm 40 is stopped, preventing the connection arm 40 from being hingedly rotated downward from the stopped position of the connection arm 40 due to gravity, irrespective of the intention of the user, by the provision of a clicking unit, such as a saw-teeth catching unit, at the connection hinge part G between the body housing 10 and the connection arm 40.
• a clicking unit such as a saw-teeth catching unit
• the headset H which is mounted to the connecting arm 40, is constructed in a structure in which power terminals pi and p2 of the headset H is connected to power terminals pi' and p2' of the transmitter U, as shown in FIG. 9, which is a circuit diagram illustrating a circuit of the headset H, such that the power terminals pi and p2 of the headset H is connected to a power source Ph which is supplied with power from a power source Pw of the transmitter U of FIG. 10 connected through the connector 41.
• audio terminals al' and a2' of the transmitter U are connected to audio terminals al and a2 of an earphone 121 of the headset H through the connector 41.
• switch detectors d and d' for detecting the manipulation state of the manipulation button 12 are also provided.
• the audio connection terminals are provided to charge the headset H and, at the same time, to operate the MP3 player P, while the headset H is being mounted to the transmitter U, or to allow an audio signal from the Bluetooth equipment to be heard from the FM radios R through the transmitter U, during a telephone conversation.
• the audio terminals for acoustic coupling between the transmitter U and the headset H, are constructed as follows.
• the transmitter U includes the two left and right audio terminals al' and a2' for stereo input.
• the audio terminals al' and a2' of the transmitter U are connected to the audio terminals al and a2 of the earphone 121 of the headset H.
• the headset H is constructed in a monaural type structure, the left and right audio terminals al' and a2' of the transmitter U are short- circuited, such that a sound output from the Bluetooth equipment can be simultaneously introduced into the left and right audio terminals al' and a2', and then the sound output is transmitted to the audio terminals al and a2 of the headset H. Consequently, it is possible to simultaneously use a monaural type headset and a stereo type headset with a single transmitter U.
• the audio pass control cable may be connected in parallel with the earphone of the headset H.
• the terminals for recognizing the manipulation state of the manipulation button 12 are constructed as follows. When the manipulation button 12 is pressed, the same operation as the pressing of the manipulation button SW of the headset H is carried out, and therefore, when a telephone call is received, a hands-free function using the FM radio R may be performed through the Bluetooth equipment, even though the manipulation button 12 of the transmitter U is manipulated.
• the recognition of the Bluetooth equipment according to the manipulation button 12 of the transmitter U may be possible through the connection with the manipulation button SW or through the reception and process through an additional port of the Bluetooth equipment.
• the headset H includes an RF transceiver RFT connected to an antenna A, a digital signal processor DSP, a microcomputer MICOM, an audio interface AI, a battery B for charging, and a display screen DS.
• the transmitter U includes an audio interface AI, an FM modulator FMM, an RF transmitter RFR, and an antenna a having the connecting arm 40, at which the connector 41 is formed, mounted therein.
• the headset and transmitter assembly according to the present invention further includes a connector structure for interconnecting the conventional headset and the transmitter U.
• an exemplary headset H constructed in a preferred structure and filed by the applicant of the present application on the same date, includes an earphone body part 120 and a main body part 130 which are rotatable relative to each other about a hinge shaft 110.
• the main body part 130 has a Bluetooth circuit board 140 mounted therein.
• the main body part 30 has a microphone M, an indication lamp 133, a manipulation button SW, which is a multifunction switch to perform the beginning of telephone communication and termination of telephone communication, and a volume switch 132 (hereinafter, the manipulation button SW and the volume switch 132 will be referred to as 'manipulation switches').
• the main body part 130 is provided at the upper end thereof with a hinge shaft part 135, which is an extension member protruding upward.
• the earphone body part 120 has an earphone 121, which will be inserted into an ear of a user.
• the earphone 121 protrudes from the earphone body part 120 in an integrated fashion.
• an annular fitting groove 122 At the bottom of the earphone body part 120 is formed an annular fitting groove 122, in which a carrying cap 150 is fitted.
• the earphone body part 120 and the main body part 130 are hingedly rotated relative to each other by a rotation angle of approximately 70 to 110 degrees depending upon the convenience of a user. Consequen tly, when the earphone 121 of the earphone body part 120 is inserted into an ear of the user, the microphone M of the main body part 130 is located adjacent to the mouth of the user.
• the conventional Bluetooth headset having the general structure is not provided with any connection terminal, excluding a charge terminal, because the Bluetooth headset communicates with other equipment in a wireless fashion.
• the headset H adopted by the present invention be provided with an additional connection unit, through which the headset H cooperates with the transmitter U of the present invention and a charging process is carried out in the vehicle.
• the main body part 130 is provided at the end of the hinge shaft part
• USB type connector 160 for charging and audio cable connection, which is disposed in a structure in which the connector 160 is exposed if necessary.
• the connector 160 of the main body part 130 is exposed to the outside only when the earphone body part 120 is hingedly rotated relative to the main body part 130, whereby the introduction of external foreign matter into the connector 160 is effectively prevented.
• the headset H is constructed in a structure in which a sensitive magnet Mg is inserted in the end of the bridge piece 125' of the earphone body part 120, and a magnetic force sensitive integrated circuit (IC) C is mounted in the hinge shaft part 135 of the main body part 130 such that the magnetic force sensitive IC C is spaced apart from the sensitive magnet Mg, whereby the headset H generates a signal corresponding to the erected or bent state of the headset H, to perform a power saving function.
• IC magnetic force sensitive integrated circuit
• the connector 160 of the exemplary headset H is inserted into the connector 41 of the transmitter U, and therefore, the connection of the audio signal and the charging are accomplished, while the mechanical fixing between the headset H and the transmitter U is accomplished. Consequently, the convenience of the user is greatly improved.
• FIG. 8 illustrates a conventional Bluetooth headset OH adopted by various makers.
• the Bluetooth headset OH of FIG. 8 is a straight bar type headset having a general structure.
• the illustrated headset only performs wireless communication as a closed loop, and therefore, the headset is provided with only a charge terminal Sg for charging as an independent structure.
• any headset may be used in the present invention provided that the headset is provided as a headset H2 having a connector CN as an interface for connection with audio and power cables of the transmitter U.
• the connector CN for the connection is inserted into the connector 41 of the transmitter U, with the result that the audio signal connection and the connection of the charge cable are simultaneously accomplished.
• the headsets H and H2 may be configured in any shape and design, so far as the headsets H and H2, satisfying the Bluetooth communication protocol, have a connector coupling structure for mechanical connection with the audio signal cable and the charge cable of the transmitter U. Consequently, the headset H or H2 and the transmitter U according to the present invention may come onto the market as an assembly. Of courser, it is possible to combine a transmitter U and a headset H or H2, which are manufactured by different manufacturing companies.
• HP may cooperate with the transmitter U.
• the headset H or H2 when a user wishes to use the mobile phone HP in the vehicle in a Bluetooth mode, the user may insert the connector HC of the Bluetooth headset H into the connector 41 of the connecting arm 40 of the transmitter U.
• a sound output of the Bluetooth headset H is introduced into the input terminal of an FM transmitter circuit in the body housing 10 through the connecter terminal located at the top of the signal input arm 40, and therefore, the sound output is reproduced by the FM radio.
• the input of the talker is carried out through the microphone of the Bluetooth headset H. Consequently, it is possible to perform a hands-free function with increased sound volume in addition to the telephone conversation in the general Bluetooth mode.
• Bluetooth headset H are constructed as follows.
• the transmitter U include the two audio terminals al' and a2' for stereo input.
• the headset H or H2 is constructed in a monaural type structure
• the audio terminals al' and a2' of the transmitter U are short-circuited, such that a sound output from the Bluetooth equipment can be simultaneously introduced into the audio terminals al' and a2'. Consequently, it is possible to simultaneously use a monaural type headset and a stereo type headset with a single FM transmitter.
• the headset H or H2 is continuously charged.
• a circuit for increasing a microphone gain of the Bluetooth headset it is preferable to include a circuit for increasing a microphone gain of the Bluetooth headset to a predetermined level.
• the headset H or H2 may further include a stereo structure necessary to listen to MP3 music.
• the headset H or H2 when the headset H or H2 is mounted to the transmitter, it is possible not only to charge the headset H or H2 but also to listen to MP3 music from the radio of the vehicle.
• the transmitter U may cooperate with general acoustic equipment or a mobile phone HP usable without a headset such that a signal from the acoustic equipment or the mobile phone can be transmitted to the FM radio R.
• an output jack PJ of a sound output wire W of the acoustic equipment for example an MP3 player, into an input jack K of the transmitter U to transmit a signal such that sound is reproduced from the FM radio R.
• an earphone jack EJ of the mobile phone may be connected to the input jack K of the transmitter U such that the reproduction can be carried out through the FM radio.
• the user may insert the earphone jack EJ of the mobile phone such that a voice signal from the other party can be inputted to the FM transmitter, and therefore, the user can listen to the voice of the other party through the FM radio R.
• the voice of the talker is transmitted to the mobile phone HP through the microphone MC mounted in the transmitter U and the input jack K of the transmitter U, and is then transmitted to the other party through the microphone terminal of the mobile phone HP. Consequently, the telephone conversation in the hands-free mode is accomplished.
• an adaptor JW for matching between the input jack K and the earphone jack EJ may be required depending upon kinds of mobile phones HP, and such adaptor may be provided together with the transmitter U according to the present invention.
• the FM transmitter according to the present invention may be provided individually or in a combination of the transmitter U and the Bluetooth headset H, the transmitter U and the mobile phone HP, or the transmitter U and various kinds of acoustic equipment, whereby the hands-free function is carried out in the vehicle through the connection of the signal cable, such as the earphone of the MP3 player, the Bluetooth headset H, or the mobile communication equipment, and, at the same time, it is possible to charge the acoustic equipment. Consequently, it is possible to charge the acoustic equipment, especially the Bluetooth headset H, of which the standby time is critical, without the use of an additional charge unit.
• the FM transmitter according to the present invention optimally cooperates with the headset H, disclosed in the application filed in the name of the applicant of the present application on the same date.
• Bluetooth mobile communication equipment and acoustic equipment is connected, according to the present invention is characterized by the external appearance and the mechanical structure of the transmitter U, and the circuits for connection are well known in the art to which the present invention pertains, and therefore, the circuits for connection are not claimed as a right to be protected in the present invention.
• the present invention is applicable to a headset H of a specific structure, whereby it is possible to very conveniently accomplish the connection between the present invention and the headset, and it is possible to present the interior of the vehicle in a beautiful and delicious state by the provision of night illumination.

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Multimedia (AREA)
• Telephone Function (AREA)
• Transmitters (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39511813

Family Applications (1)

Country Status (2)

Families Citing this family (2)

Citations (6)

• 2006
  • 2006-12-14 KR KR1020060128167A patent/KR20080055179A/ko not_active Application Discontinuation
  • 2006-12-26 WO PCT/KR2006/005724 patent/WO2008072816A1/en active Application Filing

Patent Citations (6)

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