CN101142749A - Portable apparatus with built-in fm transmitter - Google Patents
Portable apparatus with built-in fm transmitter Download PDFInfo
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- CN101142749A CN101142749A CNA2006800088779A CN200680008877A CN101142749A CN 101142749 A CN101142749 A CN 101142749A CN A2006800088779 A CNA2006800088779 A CN A2006800088779A CN 200680008877 A CN200680008877 A CN 200680008877A CN 101142749 A CN101142749 A CN 101142749A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/088—Quick-releasable antenna elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- 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
- H04B1/02—Transmitters
- H04B1/03—Constructional details, e.g. casings, housings
- H04B1/034—Portable transmitters
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- 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
- H04B1/02—Transmitters
- H04B1/03—Constructional details, e.g. casings, housings
- H04B1/034—Portable transmitters
- H04B1/0346—Hand-held transmitters
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- 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
- H04B1/3805—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 with built-in auxiliary receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
- H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
- H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
- H04H20/48—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for FM stereophonic broadcast systems
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/78—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations
- H04H60/80—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations characterised by transmission among terminal devices
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- 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
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- 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
- H04M1/72442—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality for playing music files
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Transmitters (AREA)
- Headphones And Earphones (AREA)
Abstract
A portable apparatus with a built-in FM transmitter, where an antenna has a high degree of freedom in installation, less likely to break, and has enhanced transmission efficiency. A portable music playback apparatus (100) comprises an audio playback device (10) for generating an audio signal to be transmitted, a stereo modulation circuit (22) and an FM modulation circuit (24) for FM-modulating the audio signal to generate a carrier wave signal receivable by an FM receiver, an external transmission antenna (102) removably provided exposed to the outside of a housing, and a transmission circuit (26) for transmitting the carrier wave signal through the external transmission antenna (102).
Description
Technical field
[0001]
The present invention relates to be provided with the mancarried device of built-in fm transmitter of the FM transmitter of the signal that transmission modulated by FM.
Background technology
[0002]
The mancarried device known always (for example referring to patent documentation 1) of the pocket telephone of built-in fm transmitter etc.Because the FM transmitter of dress in using can be exported the sound that takes place in mancarried device from the FM receiver of outside.Thereby the sound that the mancarried device of not establishing loud speaker can be taken place is compared with the situation of the miniature loudspeaker that uses interior dress from the loud speaker output of outside, can improve tonequality and guarantee volume.In addition, as the antenna of the FM transmitter that is loaded on mancarried device in being connected, outer attached bar antenna (for example referring to patent documentation 2) is arranged.
Patent documentation 1: the spy opens 2001-197168 communique (3-6 page or leaf, Fig. 1-5)
Patent documentation 2: the spy opens flat 10-207972 communique (4-7 page or leaf, Fig. 1-9)
Summary of the invention
[0003]
, as above-mentioned patent documentation 2 is disclosed, if often outer attached bar antenna, damaged easily when collection or during carrying.In addition, considered dress in such bar antenna, but the whole miniaturization difficulty of device, and the space that need guarantee collection antenna in housing, the degree of freedom of antenna setting diminishes, and owing to use little antenna, emission effciency reduces.
[0004]
The present invention is the invention of conceiving in view of such problem, and its purpose is, the mancarried device that the degree of freedom height of antenna setting, damaged possibility are little, can make the built-in fm transmitter that emission effciency improves is provided.
[0005]
In order to solve above-mentioned problem, the mancarried device of built-in fm transmitter of the present invention is provided with: the audio signal generation circuit of the audio signal that generation will be sent out; Audio signal FM is modulated and generates the modulation circuit of the carrier signal of available FM receiver reception; Expose the external emission antenna that freely is provided with in outside, mounting or dismounting; And the transtation mission circuit of launching carrier signal by the external emission antenna.By using mounting or dismounting free outer transmitting antenna because (only when sending) fixes up an aerial wire only when needed, antenna degree of freedom height is set, and, can prevent the breakage of antenna when carrying or collection.In addition, compare,, can improve emission effciency owing to can use long antenna with the situation of built-in antenna.
[0006]
In addition, above-mentioned external emission antenna is preferably on the antenna part and inserts loading coil.Perhaps, preferably also be provided with the external antenna port that is connected on the lead-out terminal of being located at the transtation mission circuit in the above-mentioned housing, between the lead-out terminal of transtation mission circuit and external antenna port, insert loading coil.Thereby, can adjust antenna length by the frequency of the carrier signal of launching.
[0007]
In addition, also be provided with the output circuit of output by the audio signal of above-mentioned audio signal generation circuit generation, the pluggable earphone flexible cord that preferably will be connected on the output circuit uses as the external emission antenna.Therefore,, need not external emission antenna, can seek the minimizing of component count as other parts owing to the earphone of listening to audio sound can be used as the external emission antenna.And owing to need not to be provided with the external antenna port of external emission antenna-specific, component count reduces thereupon, but and simplified structure.
[0008]
In addition, be preferably between above-mentioned transtation mission circuit and the output circuit and insert choke.Therefore, when the output of earphone flexible cord sends signal, can prevent that this transmission signal from flowing into the output stage of the output circuit of low output impedance from transtation mission circuit.
[0009]
In addition preferably like this, also be provided with by the power circuit of chargeable secondary cell each component part power supply, connect will be from the charger of the alternating voltage step-down of source power supply and rectification the time via feed cable, secondary cell is recharged, feed cable is used as the external emission antenna, and be electrically connected transtation mission circuit and feed cable by the internal wiring of charger.Thereby, when being placed in mancarried device on the charger, the feed cable of drawing from charger can be used as the external emission antenna for the secondary cell charge of internally adorning.And, do not need to establish the external emission antenna in addition as other parts, can reduce component count and simplify the structure of mancarried device.
[0010]
In addition preferably like this, above-mentioned feed cable one end is connected charger, and other end setting is corresponding to the plug of household socket, inserts choke on the position of the more close other end that plug is set than an end of feed cable.Therefore, can remove the power supply noise of when mains cord is used as the external emission antenna, invading from household socket.
[0011]
In addition preferably like this, also be provided with the power circuit of each component part being supplied with operating voltage by chargeable secondary cell, charger will be from the alternating voltage step-down of source power supply and the charging current after the rectification to secondary cell charge by supplying with via feed cable, on the charger antenna terminal on its housing, be electrically connected the external emission antenna, and be electrically connected transtation mission circuit and external emission antenna by the internal wiring of charger.Therefore, when being placed in mancarried device on the charger, can use the external emission antenna that is contained on the charger for the secondary cell charge of internally adorning.Thereby, because mancarried device self do not need external antenna port, simplification that can implementation structure.
[0012]
In addition, above-mentioned external emission antenna and transtation mission circuit are preferably isolated on direct current mutually.Specifically, above-mentioned DC-isolation adopts electrostatic capacitance by capacitor to be coupled to realize.Perhaps, above-mentioned DC-isolation realizes by the electromagnetic coupled with transformer.Therefore, when externally transmitting antenna contacts fixed potential or earthing potential, can protect transtation mission circuit.
[0013]
In addition, be loaded on internal emission antenna in the housing that is connected above-mentioned transtation mission circuit in preferably also being provided with.Thereby, can be only only with the internal emission antenna time receiver side can not obtain use external emission antenna under the situation of enough signal qualitys, therefore, when not using the external emission antenna, manipulating of mancarried device just becomes easy.
[0014]
In addition preferably like this, above-mentioned audio signal generation circuit is to stretch and the audio frequency replaying apparatus of playback audio signal with the voice data of compressed format record.Therefore, because can be with the audio signal of being reset as the transmission of FM signal with the portable good small-sized compressed audio playback device of MP3 (MPEG Audio Layer-3) player etc., can be from the loud speaker output audio sound of the FM receiver of vehicle-mounted FM receiver or family expenses etc.
Description of drawings
[0015]
Fig. 1 represents the structure of the portable music player of the 1st embodiment.
Fig. 2 is the perspective view of the outward appearance of expression portable music player.
Fig. 3 represents the variation of present embodiment.
Fig. 4 represents other variation of present embodiment.
Fig. 5 represents other variation of present embodiment.
Fig. 6 represents the structure of the portable music player of the 2nd embodiment.
Fig. 7 represents the structure of the portable music player of the 3rd embodiment.
Fig. 8 is the outward appearance perspective view of charger 300.
Fig. 9 represents the structure of the portable music player of the 4th embodiment.
Description of symbols
[0016]
10 audio frequency replaying apparatus
12 output circuits
The 20FM transmitter
22 stereo modulation circuit
The 24FM modulation circuit
26 transtation mission circuits
30 operating portions
32 display parts
34 control parts
36 power circuits
38 secondary cells
40,108,314,322 loading coils
42,46,320 capacitors
44 coils
48,334,336 chokes
100,100A, 100B portable music player
102 external emission antennas
104,116A, 116B, 118 external antenna port
106 earphone terminals
110 earphones
110A earphone flexible cord
112A, 112B, 114A, 114B charging terminal
200,400 housings
300,300A charger
310 reduction voltage circuits
312 rectification circuits
330 feed cables
Embodiment
[0017]
Below, be elaborated with regard to the portable music player that adopts one embodiment of the invention with reference to accompanying drawing.
[0018] (the 1st embodiment)
Fig. 1 represents the structure of the portable music player of the 1st embodiment.The component part of the portable music player 100 of present embodiment shown in Figure 1 comprises: audio frequency replaying apparatus 10, output circuit 12, FM transmitter 20, operating portion 30, display part 32, control part 34, power circuit 36, secondary cell 38.In these component parts, except operating portion 30, display part 32, secondary cell 38, major part is to form (still, can not except the driving mechanism of these technologies formation etc.) with CMOS technology or MOS technology as single-chip on semiconductor substrate.Owing to use these technologies, can make the single-chip parts that are formed on the semiconductor substrate and 100 miniaturizations of whole portable music player, low power consumption.
[0019]
Audio frequency replaying apparatus 10 is will be with the audio signal generation circuit of the voice data stretching, extension of compressed format record and playback, output audio signal, for example, and corresponding to MP3 player or MD (compact disk) player etc.Moreover, audio frequency replaying apparatus 10 in the present embodiment needs the function of the audio signal that generation will be sent out at least, and the sound reproduction circuit of also available CD from non-audio compressed data playback audio signal (compact disc) player or portable phone etc. constitutes audio frequency replaying apparatus 10.The L signal and the R signal of different audio signals from about audio frequency replaying apparatus 10 output.Output circuit 12 will amplify the audio signal of exporting from audio frequency replaying apparatus and carry out the adjusted signal of tonequality and export to earphone (not shown) by earphone terminal 106.
[0020]
The signal that FM transmitter 20 will carry out after FM modulates L signal and the R signal from audio frequency replaying apparatus 10 outputs sends from external emission antenna 102 by external antenna port 104.Therefore, FM transmitter 20 is provided with stereo modulation circuit 22, FM modulation circuit 24, transtation mission circuit 26.L signal and the synthetic stereo modulation of R signal that stereo modulation circuit 22 carries out being imported are handled, and generate stereophonic composite signal (stereo composite signal).24 pairs of stereophonic composite signals of FM modulation circuit carry out the FM modulation treatment, generate to be located at this portable music player 100 receivable carrier signal of outside FM receiver (not shown) nearby.Transtation mission circuit 26 amplifies by the carrier signal of FM modulation circuit 24 generations and from 102 transmissions of external emission antenna.
[0021]
Operating portion 30 is provided with various keys and the operation knob of being operated by the operator.For example, be provided with " playbacks " key or " stopping " key of various indications are carried out in the playback action of the audio signal that produced by audio frequency replaying apparatus 10, and be provided with " UP " key and " DOWN " key of using in order to the sound volume setting of the amplification degree of indication output circuit 12.Display part 32 shows the content of operation that is produced by operating portion 30 or shows the content that produced by audio frequency replaying apparatus 10 etc. (for example, the melody title in the playback (bent name) and sing singer's name, playback elapsed time etc. of this melody).The whole portable music player 100 of control part 34 controls.For example, set the playback mode that produces by audio frequency replaying apparatus 10, set the volume of output circuit 12.
[0022]
[0023]
Fig. 2 is the perspective view of the outward appearance of expression portable music player 100.As shown in Figure 2, on the housing 200 of portable music player 100, the external antenna port of exposing externally 104 is set, on this external antenna port 104, can freely installs and removes external emission antenna 102.As shown in Figure 2, external emission antenna 102 has for example bar-shaped shape, and the one end is embedded in the external antenna port 104, just can be attached on the housing 200.Moreover also externally an end of transmitting antenna 102 forms the pin thread groove, externally forms the negative thread groove on the antenna terminal 104, and external emission antenna 102 is installed on the external antenna port 104.In addition, the shape of external emission antenna can be not necessarily bar-shaped, also can be band shape or be curved shape such as L shaped.
[0024]
Like this, in the portable music player 100 of present embodiment, owing to use mounting or dismounting free outer transmitting antenna 102, (only when sending) fixes up an aerial wire just only when needed.Thereby, the degree of freedom height that antenna is provided with, and can prevent external emission antenna 102 breakages when carrying or collection.In addition, compare,, can improve emission effciency owing to can use long external emission antenna with the situation of built-in antenna.
[0025]
Fig. 3 is the figure of the variation of expression present embodiment.In the structure of the variation that is shown in Fig. 3, between transtation mission circuit 26 and external emission antenna 102, insert loading coil 40.Owing to loading coil 40 is used as the part of external emission antenna, can increase the effective length of external emission antenna 102.Moreover, in structure shown in Figure 3, loading coil is inserted between transtation mission circuit 26 and the external antenna port 104, but inserts loading coil 40 on the part of the external emission antenna 102 of external antenna port 104 that also can be attached outside.In addition, in order to seek effective utilization in space, also externally on the periphery of antenna terminal 104 the coiling copper cash form loading coil 40.
[0026]
Fig. 4 and Fig. 5 are the figure of other variation of expression present embodiment.In the structure of the variation that is shown in these figure, transtation mission circuit 26 and external emission antenna 102 be DC-isolation each other.Specifically, in being shown in the example of Fig. 4,, transtation mission circuit 26 is connected (electrostatic capacitance coupling) with external emission antenna 102 by electrostatic capacitance owing between transtation mission circuit 26 and exterior antenna 104, insert capacitor 42.In addition, in being shown in the example of Fig. 5, owing between transtation mission circuit 26 and external antenna port 104, insert 2 coils 44 of mutual electromagnetic coupling, with transtation mission circuit 26 and external emission antenna 102 electromagnetic coupled.Thereby, when externally transmitting antenna 102 contacts fixed potentials or earthing potential, can protect transtation mission circuit 26.
[0027] (the 2nd embodiment)
Fig. 6 is the figure of structure of the portable music player of expression the 2nd embodiment.The structure self of the portable music player 100A of present embodiment shown in Figure 6 is roughly the same with the portable music player 100 that is shown in Fig. 1, and difference is that the pluggable earphone flexible cord that will be connected on the output circuit 12 uses as the external emission antenna.In structure shown in Figure 6, the capacitor 46 that the lead-out terminal of the transtation mission circuit 26 in the FM transmitter 20 is used by stopping direct current is connected in the wiring between output circuit 12 and the earphone terminal 106.In addition, between output circuit 12 and earphone terminal 106, insert choke 48, insert loading coil 108 in earphone terminal 106 1 sides in output circuit 12 1 sides.From the signal of transtation mission circuit 26 output, be input to by capacitor 46 on the tie point of choke 48 and loading coil 108, the earphone flexible cord 110A with earphone 110 sends as the external emission antenna by loading coil 108 and earphone terminal 106.
[0028]
Like this, owing to the earphone flexible cord 110A that listens to the earphone 110 of audio sound can be used as the external emission antenna, do not need to establish external emission antenna 102 in addition, thereby reduce component count as other parts.And owing to need not to be provided with the external antenna port 104 of external emission antenna-specific, along with the minimizing of component count, structure also can obtain simplifying simultaneously.
[0029]
In addition, in general, because the output impedance of the output stage of output circuit 12 is low, if the lead-out terminal of transtation mission circuit 26 directly is connected on the output stage of output circuit 12, send signal and will flow into transtation mission circuit 26, and insert choke 48 by outlet side at output circuit 12, can prevent to flow into for the transmission signal of output circuit 12.
[0030] (the 3rd embodiment)
Fig. 7 is the figure of structure of the portable music player of expression the 3rd embodiment, and expression also comprises the overall structure of the portable music player system of charger.The portable music player 100 that is shown in the self structure of portable music player 100B of present embodiment of Fig. 7 and Fig. 1 is roughly the same, has external antenna port 104 and is replaced as the structure of being located at charging terminal 112A, 114A external antenna port 116A nearby.
[0031]
In addition, in the portable music player 100B of present embodiment, the charger 300 to secondary cell 38 chargings of interior dress is housed outward.This charger 300 is provided with: will be by the reduction voltage circuit 310 of cable 330 from the alternating voltage step-down of source power supply supply; And with the ac voltage rectifier after the step-down and generate the rectification circuit 312 of DC charging electric current.For example, the simplest structure is, reduction voltage circuit 310 usefulness transformers constitute, and rectification circuit 312 adopts rectifier cell such as diodes and constitutes with bridge circuit.Positive-negative output end of rectification circuit 312 is connected on charging terminal 112B, the 114B that exposes externally.These charging terminals 112B, 114B are located at such position, that is, when placing portable music player 100B on the assigned position of charger 300, can be electrically connected with charging terminal 112A, the 114A formation of taking formula music player 100B one side.Therefore, the charging current that is produced by charger 300 is supplied with secondary cell 38 by charging terminal 112A, 112B and charging terminal 114A, 114B.
[0032]
Fig. 8 is the outward appearance perspective view of charger 300, the state after the housing 200B of expression portable music player 100B loads onto.The charger 300 of present embodiment comprises: the external antenna port 116B nearby that is located at charging terminal 112B, 114B; Be located at as the part of the housing of charger and be exposed to outside locational external antenna port 118; Be inserted in the loading coil 314 between these external antenna port 116B, 118.External antenna port 116B is located at such position, that is, when placing portable music player 100B on the assigned position of charger 300, can be electrically connected with the external antenna port 116A of portable music player 100B one side.In addition, external antenna port 118 has and external antenna port 104 identical functions shown in Fig. 1 and Fig. 2, the detachable external emission antenna 102 of freely installing.Moreover, in the present embodiment, because the external antenna port 118 of external emission antenna 102 is installed to be arranged on the housing 400 of charger 300, needn't necessarily use mounting or dismounting free outer transmitting antenna 102, also can be mounted to the state of the transmitting antenna 102 that can not pull down from the external antenna port 118 of charger 300.Moreover, because loading coil 314 is in order to adjust the coil of antenna length, so can omit.
[0033]
Like this, in the time of can being placed in portable music player 100B on the charger 300 in secondary cell 38 chargings of giving interior dress, use the external emission antenna 102 that is installed on the charger 300.Therefore, because portable music player 100B self is not with external antenna port, can simplified structure.
[0034] (the 4th embodiment)
Fig. 9 is the figure of structure of the portable music player of expression the 4th embodiment, and expression comprises the integral body of the portable music player system of charger.The portable music player 100B of present embodiment shown in Figure 9 is provided with external antenna port 116A with shown in Figure 7 identical.
[0035]
In addition, charger 300A with respect to the difference of charger shown in Figure 7 300 is: removed external antenna port 118 and be connected loading coil 314 on this antenna terminal, be connected the capacitor 320 that the stopping direct current on the external antenna port 116B uses and be inserted in loading coil 322 and 2 chokes 334,336 in the feed cable 330 and increased.2 chokes 334,336 are used for removing the power supply noise of invading from household socket, are inserted in the side than the more close plug 332 in end of the reduction voltage circuit side of feed cable 330.Moreover, because loading coil 322 also can omit in order to adjust antenna length.
[0036]
When secondary cell 38 charging of interior dress being placed in charger 300A when going up with portable music player 100B, the feed cable 330 of drawing from charger 300A can be used as exterior antenna with such charger 300A.And, do not need to establish the external emission antenna in addition as other parts, can realize the minimizing of component count and the simplification of portable music player 100B structure.
[0037]
Moreover the present invention is not limited to the above embodiments, in the scope of main points of the present invention all variant embodiment can be arranged.For example, in the above-described embodiments, only be conceived to install and remove the free outer transmitting antenna and describe, and except this mounting or dismounting free outer transmitting antenna, also the internal emission antenna can be contained in the inside of portable music player 100 grades.At this moment, use at the same time under the situation of internal emission antenna and external emission antenna, preferably carry out connection between them, make it can not produce impedance mismatching by balanced-unbalanced transformer (balun).So with the situation of internal emission antenna and external emission antenna duplexer, can be only when using inside antenna separately the FM receiver side can not obtain enough signal qualities and use the situation of external emission antenna.Thereby, when not using the external emission antenna, owing to can unload from the housing 200 of portable music player 100 grades, when carrying or collect, carry out the operation of portable music player 100 etc. easily to the outstanding external emission antenna in outside.
Utilize possibility on the industry
[0038]
According to the present invention, install and remove freely external emission antenna by use, can be only when needed (only During transmission) fix up an aerial wire, antenna free degree height is set, and can prevent in carrying or collection The time antenna breakage. In addition, compare with in-built situation, can carry with long antenna High emission efficiency.
Claims (18)
1. the mancarried device of a built-in fm transmitter is characterized in that, is provided with:
The audio signal generation circuit of the audio signal that generation will be sent out;
With described audio signal FM modulation, produce the modulation circuit of the carrier signal of available FM receiver reception;
Be exposed to the external emission antenna that the mounting or dismounting of outside freely are provided with; And
With the transtation mission circuit of described carrier signal by described external emission antenna transmission.
2. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Certain part on the described transmitting antenna is inserted with loading coil.
3. the mancarried device of built-in fm transmitter as claimed in claim 2 is characterized in that:
Also comprise and be located at external antenna port described housing, that be connected with the lead-out terminal of described transtation mission circuit,
Between the lead-out terminal of described transtation mission circuit and described external antenna port, be inserted with loading coil.
4. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
The output circuit that also comprises the audio signal output that described audio signal generation circuit is produced,
The pluggable earphone flexible cord that is connected on the described output circuit is used as described external emission antenna.
5. the mancarried device of built-in fm transmitter as claimed in claim 4 is characterized in that:
Be inserted with choke between described transtation mission circuit and the described output circuit.
6. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Also be provided with from chargeable secondary cell and accept power supply, and provide the power circuit of operating voltage to each component part,
After the charger with the alternating voltage step-down that will supply with from source power supply by feed cable and rectification was connected, described secondary cell was recharged,
Described feed cable uses as described external emission antenna, and described transtation mission circuit and described feed cable are electrically connected by the internal wiring of described charger.
7. the mancarried device of built-in fm transmitter as claimed in claim 6 is characterized in that:
One end of described feed cable is connected to described charger, and the other end is provided with the plug corresponding to household socket,
On described feed cable than on the position of the nearer described other end that is provided with described plug of a described end, insert choke.
8. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Also be provided with and accept chargeable secondary cell power supply, and provide the power circuit of operating voltage each component part,
Described external emission antenna is connected electrically on the charger antenna terminal of being located at the charger housing, this charger with the alternating voltage step-down that will obtain from source power supply by feed cable and the charging current after the rectification to described secondary cell charge,
Described transtation mission circuit and described external emission antenna are by the internal wiring electrical connection of described charger.
9. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Described external emission antenna and described transtation mission circuit are each other by DC-isolation.
10. the mancarried device of built-in fm transmitter as claimed in claim 9 is characterized in that:
Described DC-isolation realizes by the electrostatic capacitance coupling of capacitor.
11. built-in fm transmitter mancarried device as claimed in claim 9 is characterized in that:
Described DC-isolation is realized by the electromagnetic coupled of transformer.
12. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Also be provided be connected in described transtation mission circuit in be loaded on the internal emission antenna of described housing.
13. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Described audio signal generation circuit is that the voice data with the compressed format record is stretched, and the audio frequency replaying apparatus of the described audio signal of resetting.
14. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
On semiconductor substrate, form structure with CMOS technology or MOS technology corresponding to described audio signal generation circuit, described modulation circuit, described transtation mission circuit.
15. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Described audio signal generation circuit is the MP3 player.
16. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Described audio signal generation circuit is the MD player.
17. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Described audio signal generation circuit is a CD Player.
18. the mancarried device of built-in fm transmitter as claimed in claim 1 is characterized in that:
Described audio signal generation circuit is a pocket telephone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005078327 | 2005-03-18 | ||
| JP078327/2005 | 2005-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101142749A true CN101142749A (en) | 2008-03-12 |
Family
ID=37023585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800088779A Pending CN101142749A (en) | 2005-03-18 | 2006-03-08 | Portable apparatus with built-in fm transmitter |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPWO2006100911A1 (en) |
| CN (1) | CN101142749A (en) |
| GB (1) | GB2438135A (en) |
| TW (1) | TW200637177A (en) |
| WO (1) | WO2006100911A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302375A (en) * | 2017-06-21 | 2017-10-27 | 苏州华启智能科技有限公司 | A kind of audio FM modulation circuits |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6117608Y2 (en) * | 1980-02-14 | 1986-05-29 | ||
| JPS62198789U (en) * | 1986-06-09 | 1987-12-17 | ||
| JP3029119U (en) * | 1996-03-19 | 1996-09-27 | 株式会社スギ電子 | Wireless card |
| JP3690224B2 (en) * | 2000-01-13 | 2005-08-31 | ヤマハ株式会社 | Mobile phone and mobile phone system |
| JP2003338769A (en) * | 2002-05-22 | 2003-11-28 | Nec Access Technica Ltd | Portable radio terminal device |
| JP2004072445A (en) * | 2002-08-07 | 2004-03-04 | Nippon Hoso Kyokai <Nhk> | Antenna feeder circuit for medium wave broadcasting |
| JP3102771U (en) * | 2004-01-13 | 2004-07-15 | 明祥 葉 | Sound signal player with playback function |
-
2006
- 2006-03-08 CN CNA2006800088779A patent/CN101142749A/en active Pending
- 2006-03-08 GB GB0716779A patent/GB2438135A/en not_active Withdrawn
- 2006-03-08 WO PCT/JP2006/304463 patent/WO2006100911A1/en active Application Filing
- 2006-03-08 JP JP2007509184A patent/JPWO2006100911A1/en active Pending
- 2006-03-09 TW TW095107932A patent/TW200637177A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302375A (en) * | 2017-06-21 | 2017-10-27 | 苏州华启智能科技有限公司 | A kind of audio FM modulation circuits |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006100911A1 (en) | 2006-09-28 |
| GB2438135A (en) | 2007-11-14 |
| GB0716779D0 (en) | 2007-10-10 |
| JPWO2006100911A1 (en) | 2008-09-04 |
| TW200637177A (en) | 2006-10-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080312 |