CN1906859A - Modulation output device - Google Patents
Modulation output device Download PDFInfo
- Publication number
- CN1906859A CN1906859A CN 200580001558 CN200580001558A CN1906859A CN 1906859 A CN1906859 A CN 1906859A CN 200580001558 CN200580001558 CN 200580001558 CN 200580001558 A CN200580001558 A CN 200580001558A CN 1906859 A CN1906859 A CN 1906859A
- Authority
- CN
- China
- Prior art keywords
- modulation
- digital
- data
- converter
- signal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Abstract
A modulation output device including: a DSP 12 for subjecting MP3 music data and the like read out from an MP3 player 50 to stereo modulation, when necessary; D/A converter 14 for converting the digital data outputted from the DSP 12 to an analog signal and outputting the converted analog signal to either an earphone terminal 54 or transmission part 15; and transmission part 15 for transmitting the analog signal outputted from the D/A converter 14 to the outside through a transmission antenna 55 enables the processing concerning reproduction of music data and processing for modulation of the reproduced music data to transmit without wires to be performed by a single DSP 12 and a single D/A converter 14.
Description
Technical field
The present invention relates to modulation output device, for example, go for MP3 music informations such as (MPEG-1AudioLayer-3) etc. and modulate and send to outside device, and can reach good effect.
Background technology
In recent years, along with mobile phone extensively popularize and to the development of multifunction, diversified service also becomes a reality.Recently, developed a kind of mobile phone that has the music playback function, it can preserve the music informations of downloading from the music distribution website such as MP3, playing back music when wanting to listen.
But this mobile phone must use the boombox of mobile phone or utilizes earphone or headphone connecting line to be connected to the earphone terminal and carry out music and listen to when listening to the music.Therefore, if exist the music of being regenerated lower tone problem and do not carry out loaded down with trivial details operation then can not listen to the problem of music.
In view of the above-mentioned problems, proposed a kind ofly possessed that the music information that will be reproduced carries out FM modulation and the mobile phone and the adapter (for example with reference to patent documentation 1,2,3) that carry out the structure of wireless transmission.
Patent documentation 1: the spy opens flat 6-309854 communique
Patent documentation 2: the spy opens the 2003-110665 communique
Patent documentation 3: the spy opens the 2003-204375 communique
The adapter that above-mentioned patent documentation 1 is put down in writing, on adapter main body, fixation of C D player, and utilize the FM reflector that is arranged on the adapter main body that the voice signal of CD Player is exported the electric wave that converts the FM frequency band to, be wirelessly transmitted to then in the broadcast receiver of the band FM that sets in advance.Then, by regulating wireless receive frequency, can utilize the sound of CD Player the sound system in the car to export.
In addition, in the mobile phone that above-mentioned patent documentation 2 is put down in writing, the music data that is stored in the storage part is read, decoded, carry out Regeneration Treatment as music signal.And, this regeneration music signal is carried out frequency modulation(FM), and as the FM signal from the FM antenna transmission.Utilize the FM broadcast receiver to receive this FM signal, in the FM broadcast receiver,, can zoom into desirable volume to music and export by mobile phone regeneration by demodulation FM signal and regeneration.
In addition, the mobile phone that above-mentioned patent documentation 3 is put down in writing, the FM modulation portion and the whole master control part of control of the music playback portion that has the music information storage part of the key input part that carries out button input, storage music information, music information is regenerated as music signal, the FM modulation of carrying out music information, when master control part detects the on-state of button of the regulation in the press key input section, by the FM modulation portion regeneration music signal is carried out the FM modulation, and carry out wireless transmission.
But, in above-mentioned prior art, in order not only the music informations such as MP3 of regeneration to be passed through outputs such as loud speaker built-in in the mobile phone or earphone, but also can carry out FM modulation and wireless transmission to the music information of regeneration, must be provided with to boombox or earphone terminal and export the treatment system of regeneration music information and the regeneration music information is carried out also these 2 systems of treatment system of wireless transmission of FM modulation.Therefore, exist the problem that circuit structure complexity and scale increase.
In addition, also develop a kind of built-in mobile phone of the wireless receiver turning of FM (tuner) recently.On the basis of the FM of the regeneration function with above-mentioned music informations such as MP3, music information modulation sending function, if further add the wireless receiving function of FM, then need to boombox and earphone terminal output regeneration music information treatment system, the regeneration acoustic information is carried out the treatment system of FM modulation and wireless transmission and these 3 systems of treatment system that reception FM wireless signal is regenerated.
And,, then need 4 treatment systems altogether if also comprise simulated sound beyond built-in analog input interface, the input FM wireless signal and the function of regenerating.Therefore the function that exists mobile phone and possessed is many more, and its circuit structure is just complicated more, and scale is with regard to big more problem.And in recent years, people wish to realize mobile phone with simple as far as possible structure, more wish to have small-sized, light-weighted mobile phone.
Summary of the invention
The present invention constitutes in order to solve such problem, its objective is to realize acoustic information from the function of outputs such as the boombox of mobile phone etc. and earphone with acoustic information is modulated and is wirelessly transmitted to the function of outsides such as mobile phone with simple as far as possible structure.
In order to solve the above problems, modulation output device of the present invention has: the handling part that carries out the modulation treatment of digitized acoustic information as required; D/A converter, its digital audio data by processor output converts analog signal to, the analoging sound signal of conversion is outputed to any one party of boombox or the earphone terminal and the sending part of equipment; With the sending part that the modulated-analog signal of being supplied with by D/A converter is sent to the outside from transmitting antenna.
In the modulation output device of alternate manner of the present invention, have: receive broadcasting wave and generate the tuner of intermediate-freuqncy signal; The analog interface portion of input analoging sound signal; For the frequency that makes intermediate-freuqncy signal and the frequency of analoging sound signal are complementary, and the modulation portion that the frequency of at least one side in intermediate-freuqncy signal and the analoging sound signal is changed; Frequency inverted being become the intermediate-freuqncy signal of mutual coupling and the A/D converter that analoging sound signal converts digital audio data to by modulation portion.
According to the present invention as constituted above, for acoustic information by equipment the boombox or the situation of output such as earphone terminal and acoustic information is modulated and is wirelessly transmitted to the processing of these 2 kinds of contents of situation of device external, can carry out the digital data conversion from processor output is become the action of analog signal by shared 1 D/A converter.Thus, can utilize a processor and a D/A converter to carry out the processing of above-mentioned 2 kinds of contents, thereby the circuit of different treatment systems need be set respectively at each contents processing.Therefore, can with simple as far as possible structure realize acoustic information by equipment boombox or the function of output such as earphone and acoustic information by modulation the function to outside wireless transmission.
According to another feature of the present invention, for processing relevant and the analoging sound signal of being imported by modulation with the reception regeneration of broadcasting, carry out the processing of these 2 kinds of contents of processing of wireless transmission, can a shared A/D converter carry out broadcast singal is converted to numerical data and action of supplying with to processor and the action that analoging sound signal is converted to numerical data and supplies with to processor.Therefore, can realize receiving the function of broadcasting and regeneration and modulating from the analog sound information of analog interface portion input and with simple as far as possible structure to the function of outside wireless transmission.
Description of drawings
Fig. 1 is the block diagram of structure example of the modulation output device of expression the 1st execution mode.
Fig. 2 is the figure of the structure example of the modulation treatment portion in the DSP of DSP and the 2nd, the 3rd execution mode of expression the 1st execution mode.
Fig. 3 is the block diagram of variation of the modulation output device of expression the 1st execution mode.
Fig. 4 is the block diagram of structure example of the modulation output device of expression the 2nd execution mode.
Fig. 5 is the block diagram of structure example of the modulation output device of expression the 3rd execution mode.
Embodiment
(the 1st execution mode)
Below, with reference to accompanying drawing, the 1st execution mode of the present invention is described.Fig. 1 is the block diagram of structure example of the modulation output device 10 of expression the 1st execution mode.Digital signal processor) 12, ROM13, D/A converter 14 and sending part 15 as shown in Figure 1, the modulation output device 10 of present embodiment comprises digital interface (I/F) 11, DSP (Digital Signal Processor:.All these functional units 11～15, adopt the CMOS processing technology to be integrated on the chip.In addition, this modulation output device shown in Figure 1 10 for example is installed in the mobile phone.
Numeral I/F11 is the interface section that is used for carrying out the exchange of numerical data between modulation output device 10 and outside.For example, digital I/F11 imports the music datas such as MP3 that are stored in wherein from connected MP3 player 50.This MP3 player 50 for example also is installed in the mobile phone.
DSP12 carries out following processing as required, to modulating from digital I/F11 digital music data input, that finished decoding processing, generates digital modulation data (being equivalent to the 1st digital modulation data of the present invention) that is:.Here, the digital music data of DSP12 input is the stereo sound data of L sound channel and R sound channel.DSP12 utilizes the first-harmonic frequency band that these stereo sound data are modulated as required.
For example, under by the music information of the MP3 player 50 regeneration boombox or earphone etc. (not shown) situation about exporting by mobile phone, DSP12 does not carry out modulation treatment.And modulating by the music information of MP3 player 50 regeneration and under the situation that the external wireless of mobile phone sends, DSP12 carries out modulation treatment.
The mode of the modulation that DSP12 carried out can be arbitrarily.For example, can adopt AM modulation, FM modulation, PM modulation, FSK modulation, PSK modulation, APSK modulation, digital broadcast modulation system (the IQ modulation of QPSK, BPSK, QAM etc.) etc.ROM13 stores the program of the action that is used to control DSP12.On the mobile phone that modulation output device 10 is installed, be provided with various operation keyss (not shown), the user is by these operation keyss of operation, any action that can specify the modulation of the inside regeneration (to the output of boombox etc.) of music informations such as MP3 and regeneration music information to send.DSP12 carries out Digital Signal Processing according to control program corresponding with appointed action in the various control programs that are stored among the ROM13.
D/A converter 14 becomes analog signal to the digital music data by DSP12 output with the digital modulation data transaction.And, after digital music data having been carried out D/A conversion, the analog music signals that is converted (being equivalent to the 1st analoging sound signal of the present invention) is outputed to the boombox of earphone terminal 54 or not shown mobile phone.In addition, after the digital modulation data have been carried out the D/A conversion, the modulated-analog signal that is converted (being equivalent to the 1st modulated-analog signal of the present invention) is outputed to sending part 15.
The switching of such object output is for example carried out according to the control program that is stored among the ROM13 by DSP12.For example, set in advance the diverter switch of object output at the deferent segment of D/A converter 14.And, specifying under by the music information of the MP3 player 50 regeneration boombox or the situation of output such as earphone by mobile phone, by the control of DSP12, diverter switch is switched to a side of the boombox of earphone terminal 54 or not shown mobile phone.And specifying modulating by the music information of MP3 player 50 regeneration and under the situation that the external wireless of mobile phone sends, by the control of DSP12, diverter switch being switched to a side of sending part 15.
Sending part 15 sends by transmitting antenna 55 modulated-analog signal by D/A converter 14 outputs to the outside.Here, sending part 15 is modulated to the modulated-analog signals from D/A converter 14 outputs on the carrier frequency zone, sends after it is brought up to frequency on the frequency band that can carry out wireless transmission.The modulation system of this moment can be arbitrarily.For example can adopt AM modulation, FM modulation, PM modulation etc.For be sent to outside modulated-analog signal by sending part 15, utilization receives with the radio receiver (not shown) of mobile phone split.Then, in radio receiver,, can the music informations such as MP3 of regenerating from the external memory storage 51 of mobile phone be exported by the high-performance loud speaker of radio receiver by modulated-analog signal being carried out demodulation and regeneration.In addition, though be to use radio receiver here, as long as possess can demodulation receives modulated-analog signal and the function by loud speaker output, also can use the electronic equipment beyond the radio receiver.
As shown in Figure 1, the modulation output device 10 of present embodiment, about music informations such as MP3 by mobile phone the boombox or the processing of output such as earphone and the music information of regeneration modulated and the processing of these 2 kinds of contents of processing of wireless transmission, not that the D/A converter that the digital data conversion from DSP12 output is become analog signal is set respectively according to the processing of these 2 kinds of contents, and be to use 1 D/A converter 14 to carry out the D/A conversion, switch object output according to the content of handling.Thus, need a plurality of D/A converters be set respectively at 2 kinds of contents processings.Thus, can with simple as far as possible structure realize from the music informations such as MP3 of external memory storage 51 regeneration by mobile phone the boombox or the function of output such as earphone and the music information of regeneration modulated and sends to the function of outside, thereby can realize small-sized, the lightweight of mobile phone.
Fig. 2 is the figure of the concrete structure example of above-mentioned DSP12 of expression and sending part 15.In addition,,, be illustrated in the structure example under the situation of the FM stereo modulation of having utilized IQ modulation (quadrature modulation) here as modulation system.
In Fig. 2,1L, 1R are amplitude limit/preemphasis circuits, and its L sound channel signal and R sound channel signal to being imported as digital signal by digital I/F11 carries out the processing of the modulation degree of amplitude limiting processing and enhancing high-frequency region respectively.2L, 2R are low pass filter (LPF), and it is to being limited and having strengthened the L sound channel signal of high-frequency region and the R sound channel signal is implemented frequency band limits.
The 3rd, the stereophonic signal generating unit, it generates stereophonic composite signal according to the L sound channel signal and the R sound channel signal that have passed through LPF2L, 2R.This stereophonic signal generating unit 3 comprises adder 3a, subtracter 3b, balanced modulator 3c and adder 3d, subcarrier generating unit 3e and guiding (pilot) signal generation 3f.
Adder 3a and subtracter 3b constitute matrix circuit, and it converts L+R's and signal (main signal) and L-R's difference signal (sub signal) to from the L sound channel signal of LPF2L, 2R output and R sound channel signal.What here generate is output to adder 3d with signal L+R, and difference signal L-R is output to balanced modulator 3c.
By the subcarrier signal of above-mentioned subcarrier generating unit 3e output, by pilot signal generating unit 3f, by 1/2 frequency division, the pilot signal as 19KHz is output to adder 3d then.Adder 3d from adder 3a output with signal L+R, from the difference signal L-R that is balanced modulation of balanced modulator 3c output and synthetic from the pilot signal of pilot signal generating unit 3f output, its result is exported as stereophonic composite signal.
4 is the 1st quadrature modulation portions, and it has integrator 4a and the PM modulation portion 4b that is used to generate the FM signal.Integrator 4a carries out integration to the stereophonic composite signal from 3 outputs of stereophonic signal generating unit.
By in this wise the stereophonic composite signal from stereophonic signal generating unit 3 input being carried out integration, and utilize this signal to carry out the PM modulation, then realized the FM modulation of stereophonic composite signal.In addition, if remove integrator 4a, then can carry out the PM modulation of stereophonic composite signal.In addition, if remove integrator 4a and replace PM modulation portion 4b and the AM modulation portion is set, then can carry out the AM modulation of stereophonic composite signal.
The 5th, frequency offset portion, it is to adding bias treatment from the I signal of the 1st quadrature modulation portion 4 inputs, the frequency of Q signal.Here the offset frequency that is added for example is 308KHz or 1.92MHz.
Carrier wave generating unit 5c generate frequency for example be 308KHz, amplitude about equally, the same-phase of phase phasic difference 90 degree and the carrier wave of quadrature, and synchronous carrier wave supplied to the 1st frequency mixer 5a, the carrier wave of quadrature is supplied to the 2nd frequency mixer 5b.This carrier wave generating unit 5c also has sin table information and cos table information, and uses these table information to generate cos ω
sThe carrier wave of t and sin ω
sThe carrier wave of t.
In addition, under the situation of carrying out the IQ modulation, need make amplitude is identical and phase phasic difference 90 is spent I signal and Q signal, but be difficult to make such I signal and Q signal by analog.Analog circuit is owing to exist the inconsistency of element and the inconsistency of delay etc., so be difficult to correctly to make the signal of 90 ° of the identical and phase phasic differences of amplitude.Therefore, as present embodiment,, modulate thereby can easily carry out IQ by carrying out modulation treatment in the mode of Digital Signal Processing by DSP12.
In addition, though in Fig. 1, be omitted diagram,, in fact also be provided with as shown in Figure 2 crystal oscillating circuit 101 and reference frequency generator 102 in the outside of DSP12.Reference frequency generator 102 wherein and each functional unit 11～15 of Fig. 1 together adopt the CMOS process quilt to be integrated on the chip.
14I, 14Q are D/A converters, and its I signal and Q signal that is used for importing as digital signal from frequency offset portion 5 converts analog signal respectively to.
6 is the 2nd quadrature modulation portions, and its use is carried out quadrature modulation by I signal and the Q signal that D/A converter 14I, 14Q convert analog signal to.That is, in the 2nd quadrature modulation portion 6, the 1st frequency mixer 6a uses same-phase (cos ω
cT) carrier wave is modulated the I signal of supplying with from D/A converter 14I.And the 2nd frequency mixer 6b uses quadrature (sin ω
cT) carrier wave is modulated the Q signal of supplying with from D/A converter 14Q.The frequency of the FM frequency band that employed here carrier frequency is for example 76～108MHz.Adder 6c exports as final stereo FM modulation signal synthetic by the I signal and the Q signal of frequency mixer 6a, 6b quadrature modulation.
The 2nd quadrature modulation portion 6 is different with the 1st quadrature modulation portion 4 that is made of DSP12, and it has adopted analog circuit to realize the IQ modulation.In the 1st quadrature modulation portion 4, in order to modulate in low frequency and wide band first-harmonic frequency band, so the carrier wave that carrier wave of using for I signal and Q signal are used requires its amplitude and phase place to reach high-precision coupling, therefore be fit to adopt the DSP12 that carries out Digital Signal Processing.And the 2nd quadrature modulation portion 6, because that its modulating frequency is the high frequency and the frequency band of FM frequency band is narrow, so, do not require that it has picture and carries out high precision the situation that IQ modulates at the base band frequency band for the amplitude and the phase place of carrier wave.Therefore, can adopt analog circuit to constitute the 2nd quadrature modulation portion 6.
Usually, if when carrying out frequency modulation(FM), carry out frequency inverted, then can produce picture noise and carrier leak.But, in the present embodiment, be provided with base band frequency band at 0～75KHz and carry out the frequency offset portion 5 of offset frequency of the 1st quadrature modulation portion 4 of IQ modulation, additional 308KHz or 1.92MHz and the 2nd quadrature modulation portion 6 that carries out the IQ modulation at the FM frequency band, divided for 3 stages modulated.And, by the I signal and the Q signal that are generated by the 1st quadrature modulation portion 4 are further staggered 90 ° mutually in frequency offset portion 5, make subsidiary noise attentuation, thus the carrier leak and the picture noise that are produced can be suppressed at offset frequency to additional 308KHz of the frequency of 0～75KHz or 1.92MHz the time.And, by the I signal and the Q signal that are generated by frequency offset portion 5 are further staggered 90 ° mutually in the 2nd quadrature modulation portion 6, make subsidiary noise attentuation, thereby can be suppressed at carrier leak and the picture noise that when the FM frequency is carried out frequency inverted, is produced from 308KHz or 1.92MHz.
The 7th, the RF amplifier, it amplifies the stereo modulation signal from 6 outputs of the 2nd quadrature modulation portion, and sends by antenna 55.The 8th, synthesizer, it generates the carrier wave that 2 frequency mixer 6a, 6b in the 2nd quadrature modulation portion 6 supply with.That is, synthesizer 8 generate amplitudes about equally, phase place stagger mutually 90 ° the same-phase and the carrier wave of quadrature, and synchronous carrier wave supplied to the 1st frequency mixer 6a, the carrier wave of quadrature supplied to the 2nd frequency mixer 6b.The 9th, load capacity value changing unit, it has coil L, varicap D1 and capacitor C1, uses this varicap D1 that the carrier frequency that generates at synthesizer 8 is carried out variable control.
In this embodiment, synthesizer 8 is constituted as, and portion comprises crystal oscillator and reference frequency generator within it, uses these to generate carrier wave, generates carrier wave but also can utilize from the reference signal of reference frequency generator 102 outputs.In addition, in above-mentioned the 1st execution mode, to ROM13 is included in the inscape of modulation output device 10, and also it is integrated in an example on the chip and is illustrated, but also can be arranged on ROM13 beyond the chip.
In addition, in above-mentioned the 1st execution mode, modulation output device 10 is had digital I/F11 interface, modulation output device 10 is illustrated by the example of digital I/F interface 11 from MP3 player 50 input digit music datas, but is not limited thereto.For example also can be as shown in Figure 3, modulation output device 10 possesses Simulation with I/F16 and A/D converter 17 replaces digital I/F interface 11, and makes MP3 player 50 further possess D/A converter 53.In addition, though in Fig. 3, also be omitted diagram,, in fact also be provided with crystal oscillating circuit shown in Figure 2 101 and reference frequency generation circuit 102 in the outside of DSP12.
Under the situation that has constituted structure as shown in Figure 3, D/A converter 53 converts the digital music data that is generated by decoder 52 to analog signal.Simulation with I/F interface 16 is from connected MP3 player 50 input analog music signals.A/D converter 17 converts the analog music signals by 16 inputs of Simulation with I/F interface to digital music data.DSP12 carries out the digital music data by A/D converter 17 outputs is generated by stereo modulation the processing of digital modulation data as required.
(the 2nd execution mode)
Below, in conjunction with the accompanying drawings, the 2nd execution mode of the present invention is described.Fig. 4 is the block diagram of structure example of the modulation output device 20 of expression the 2nd execution mode.In addition, in this Fig. 4, the part that has been labeled the symbol identical with the symbol shown in Fig. 1 have with Fig. 1 in the part identical functions, so omit repeat specification at this.
As shown in Figure 4, the modulation output device 20 of present embodiment comprises: digital I/F11, ROM13, D/A converter 14, sending part 15, radio reception tuner 21, A/D converter 22 and DSP23.All these each functional units adopt the CMOS process quilt to be integrated on a slice chip.In addition, this modulation output device shown in Figure 4 20 for example together is installed in the mobile phone with external memory storage 51.
A/D converter 22 converts the intermediate-freuqncy signal from 21 outputs of radio reception tuner to digital radio data (being equivalent to digital broadcast data of the present invention).
Numeral I/F11 imports the music datas such as MP3 that are stored in wherein from connected external memory storage 51.
DSP23 as its functional structure, comprises the 23a of demodulation process portion, the 23b of decoding processing portion and the 23c of modulation treatment portion.The 23a of demodulation process portion generates the digital demodulation data by to carrying out detection, stereo demodulation from the digital radio data of A/D converter 22 output, postemphasising etc.The 23b of decoding processing portion generates digital music data (being equivalent to the 1st digital audio data of the present invention) to being decoded by the music data of digital I/F11 input.The 23c of modulation treatment portion carries out stereo modulation to the digital music data that generates by above-mentioned decoding processing, generates digital modulation data (being equivalent to the 1st digital modulation data of the present invention) thus.Here, the digital music data imported of the 23c of modulation treatment portion is the stereo sound data of L sound channel and R sound channel.The 23c of modulation treatment portion constitutes identical with structure in the DSP12 shown in Figure 2.In addition, though in Fig. 4, be omitted diagram,, in fact also be provided with as shown in Figure 2 crystal oscillating circuit 101 and reference frequency generator 102 in the outside of DSP23.
The processing of the 23a of demodulation process portion, the 23b of decoding processing portion and the 23c of modulation treatment portion is to carry out selectively according to the various control programs that are stored among the ROM13.For example, under the boombox or earphone etc. (not shown) situation about exporting of the acoustic information of the radio broadcasting that receives by radio reception tuner 21 by mobile phone, only make the 23a of demodulation process portion action, and 23b of decoding processing portion and the 23c of modulation treatment portion are failure to actuate.
In addition, under the music informations such as MP3 of the external memory storage 51 regeneration boombox or earphone etc. (not shown) situation about exporting by mobile phone, only make the 23b of decoding processing portion action, and 23a of demodulation process portion and the 23c of modulation treatment portion are failure to actuate.On the other hand, under the situation of the outside of music informations such as MP3 being modulated and are wirelessly transmitted to mobile phone, make 23b of decoding processing portion and the 23c of modulation treatment portion action, and the 23a of demodulation process portion is failure to actuate.
The mode of the modulation that the 23c of modulation treatment portion carries out can be arbitrarily.For example can adopt the modulation system (the IQ modulation of QPSK, BPSK, QAM etc.) of AM modulation, FM modulation, PM modulation, FSK modulation, PSK modulation, APSK modulation, digital broadcasting etc.The content of the modulation treatment that the 23c of modulation treatment portion is carried out is identical with the modulation treatment that DSP12 carried out shown in Figure 1.
In the mobile phone that modulation output device 20 is installed, be provided with various operation keyss, the user is by these operation keyss of operation, but any action in the modulation transmission of the inside of music informations such as the reception of specific radio electricity regeneration, MP3 regeneration (to the output of boombox etc.) and regeneration music information.DSP23 carries out Digital Signal Processing according to control program corresponding with appointed action in the various control programs that are stored among the ROM13.
D/A converter 14 becomes analog signal to digital demodulation data, digital music data and the digital modulation data transaction from DSP23 output.Then, digital demodulating data is being carried out D/A when conversion, the analogue demodulated signal that is converted is being exported to the boombox of the earphone terminal 54 of mobile phone or not shown mobile phone.In addition, digital music data is being carried out D/A when conversion, the analog music signals that is converted (being equivalent to the 1st analoging sound signal of the present invention) is being exported to the boombox of earphone terminal 54 or not shown mobile phone.In addition, when the digital modulation data having been carried out the D/A conversion, the modulated-analog signal that is converted (being equivalent to the 1st modulated-analog signal of the present invention) is exported to sending part 15.
The switching of such object output is for example to be carried out according to the control program that is stored among the ROM13 by DSP23.For example, the deferent segment at D/A converter 14 sets in advance the diverter switch of switching object output.And, under having specified the acoustic information that receives by radio reception tuner 21 or the music informations such as MP3 from external memory storage 51, the read boombox or the situation of output such as earphone by mobile phone, by the control of DSP23, diverter switch is switched on the boombox of earphone terminal 54 or not shown mobile phone.And under the situation of having specified the outside of the MP3 music information of reading from external memory storage 51 being modulated and is wirelessly transmitted to mobile phone, the control by DSP23 switches to diverter switch on the sending part 15.
As shown in Figure 4, in the modulation output device 20 of the 2nd execution mode, modulate by the processing relevant of DSP23 handle, the processing relevant and a music information that is reproduced and the processing of wireless transmission is all carried out as Digital Signal Processing with the regeneration of music information such as MP3 with the demodulation of the intermediate-freuqncy signal of radio broadcasting.Thus, can carry out the processing of 3 kinds of contents, thereby not need corresponding each contents processing and the circuit of different treatment systems is set by a DSP23.
In addition, about the digital data conversion from DSP23 output being become the D/A converter of analog signal, also need not be provided with respectively, and be to use a D/A converter 14 to change, and the content of corresponding each processing is switched object output at the processing of 3 kinds of contents.Thus, do not need to be provided with a plurality of D/A converters.Thus, can realize from external memory storage 51 boombox or the function of output such as earphone of the music informations such as MP3 of regeneration by mobile phone, the music information of regeneration is modulated and sent to outside function, receives the function that radio broadcasting is also regenerated with simple as far as possible structure, thereby can realize small-sized, the lightweight of mobile phone.
In addition, in above-mentioned the 2nd execution mode, to radio reception tuner 21 and A/D converter 22 are included in the inscape of modulation output device 20, and these examples that also are integrated on a slice chip are illustrated, but the invention is not restricted to this.Modulation output device of the present invention also can constitute and comprise radio reception tuner 21 and A/D converter 22 digital I/F11, DSP23, ROM13, D/A converter 14 and sending part 15 in addition, and these are integrated on a slice chip.
In addition, in above-mentioned the 2nd execution mode, to ROM13 is included in the inscape of modulation output device 20, and also its example that is integrated on a slice chip is illustrated, but also can be arranged on chip exterior to ROM13.
In addition, in above-mentioned the 2nd execution mode, example to outputs such as boombox that must be by mobile phone the acoustic information of the radio broadcasting that is received by radio reception tuner 21 or earphones is illustrated, but also can constitute the structure that also can send to the outside for the acoustic information of radio broadcasting by modulation.
(the 3rd execution mode)
Below, in conjunction with the accompanying drawings, the 3rd execution mode of the present invention is described.Fig. 5 is the block diagram of structure example of the modulation output device 30 of expression the 3rd execution mode.In addition, in this Fig. 5, the part that has been labeled the symbol identical with the symbol shown in Fig. 4 have with Fig. 4 in the part identical functions, so omit repeat specification at this.
As shown in Figure 5, the modulation output device 30 of present embodiment comprises: digital I/F11, ROM13, D/A converter 14, sending part 15, radio reception tuner 21, Simulation with I/F31, modulation portion 32, A/D converter 33 and DSP34.All these each functional units adopt the CMOS process quilt to be integrated on a slice chip.In addition, this modulation output device shown in Figure 5 30 for example together is installed in the mobile phone with external memory storage 51 and simulation regenerating unit 57.
Simulation with I/F31 is used for the interface section of carrying out the exchange of analog signal between modulation output device 30 and the outside simulation regenerating unit 57 that is connected.That is, Simulation with I/F31 is from the analoging sound signal of connected simulation regenerating unit 57 inputs by these simulation regenerating unit 57 regeneration.
A/D converter 33 converts the intermediate-freuqncy signal from 21 outputs of radio reception tuner to the digital radio data.This A/D converter 33 also converts the analoging sound signal by modulation portion 32 outputs to digital audio data.In the present embodiment, for frequency match from the intermediate-freuqncy signal of radio reception tuner 21 output, make A/D converter 33 with higher frequency action.In this case, the lower analoging sound signal of frequency band for from the input of Simulation with I/F31 preferably utilizes modulation portion 32 to carry out frequency modulation(FM), and converts the signal with the roughly the same frequency band of operating frequency of A/D converter 33 to.
In addition, also can make A/D converter 33 and lower frequency match from the analoging sound signal of Simulation with I/F31 input, and with lower frequency action.In this case, preferably modulation portion 32 is arranged on the back segment of radio reception tuner 21, by to utilizing modulation portion 32 to carry out frequency modulation(FM), and convert signal with the roughly the same frequency band of low operating frequency of A/D converter 33 to from the intermediate-freuqncy signal of radio reception tuner 21 output.
DSP34 as its functional structure, comprises the 23a of demodulation process portion, the 23b of decoding processing portion and the 34a of modulation treatment portion.The 23a of demodulation process portion is by to carrying out detection, stereo demodulation from the digital radio data of A/D converter 33 output, postemphasis etc., and generates the digital demodulation data.The 23b of decoding processing portion generates digital music data (being equivalent to the 1st digital audio data of the present invention) to being decoded by the music data of digital I/F11 input.
The 34a of modulation treatment portion generates digital modulation data (being equivalent to the 1st digital modulation data of the present invention) by the digital music data that is generated by above-mentioned decoding processing is carried out stereo modulation.The 34a of this modulation treatment portion also carries out stereo modulation to the digital audio data (being equivalent to the 2nd digital audio data of the present invention) from A/D converter 33 outputs, and generates digital modulation data (being equivalent to the 2nd digital modulation data of the present invention).Here, the numerical data imported of the 34a of modulation treatment portion is the stereo sound data of L sound channel and R sound channel.The 34a of modulation treatment portion constitutes identical with structure in the DSP12 shown in Figure 2.In addition, though in Fig. 5, be omitted diagram,, in fact also be provided with as shown in Figure 2 crystal oscillating circuit 101 and reference frequency generator 102 in the outside of DSP34.
The processing of the 23a of demodulation process portion, the 23b of decoding processing portion and the 34a of modulation treatment portion is to carry out selectively according to the various control programs that are stored among the ROM13.For example, under the boombox or earphone etc. (not shown) situation about exporting of the acoustic information of the radio broadcasting that receives by radio reception tuner 21 by mobile phone, only make the 23a of demodulation process portion action, and 23b of decoding processing portion and the 34a of modulation treatment portion are failure to actuate.
In addition, under the music informations such as MP3 of the external memory storage 51 regeneration boombox or earphone etc. (not shown) situation about exporting by mobile phone, only make the 23b of decoding processing portion action, and 23a of demodulation process portion and the 34a of modulation treatment portion are failure to actuate.On the other hand, music informations such as MP3 are being modulated and are being wirelessly transmitted under the situation of mobile phone outside, making 23b of decoding processing portion and the 34a of modulation treatment portion action, and the 23a of demodulation process portion is failure to actuate.
In addition, the acoustic information by the input of Simulation with I/F31 under the situation of (not shown) outputs such as the boombox of mobile phone or earphone, the 23a of demodulation process portion, the 23b of decoding processing portion and the 34a of modulation treatment portion all are failure to actuate.On the other hand, in that the acoustic information from Simulation with I/F31 input is wirelessly transmitted to by modulation under the situation of mobile phone outside, only make the 34a of modulation treatment portion action, and 23a of demodulation process portion and decoding handling part 23b are failure to actuate.
The mode that the 34a of modulation treatment portion modulates can be arbitrarily.For example can adopt the modulation system (the IQ modulation of QPSK, BPSK, QAM etc.) of AM modulation, FM modulation, PM modulation, FSK modulation, PSK modulation, APSK modulation, digital broadcasting etc.The content of the modulation treatment that the 34a of modulation treatment portion is carried out is identical with the modulation treatment that DSP12 carried out shown in Figure 1.
In the mobile phone that modulation output device 30 is installed, be provided with various operation keyss, the user is by these operation keyss of operation, but any action in the modulation transmission of the inside regeneration of the inside of music informations such as the reception regeneration of specific radio electricity broadcasting, MP3 regeneration (to the output of boombox etc.), analog sound information and regeneration music information or regeneration acoustic information.DSP34 carries out Digital Signal Processing according to control program corresponding with appointed action in the various control programs that are stored among the ROM13.
D/A converter 14 is converting analog signal to from digital demodulation data (wireless signal having been carried out the data of digitized processing), digital music data (data of the music datas such as MP3 of having regenerated), digital audio data (the regeneration analoging sound signal having been carried out the data of digitized processing) and the digital modulation data of DSP34 output (digital music data and digital audio data having been carried out the data of stereo modulation).
And D/A converter 14 is carrying out digital demodulating data D/A when conversion, and the analogue demodulated signal that is converted is exported to the boombox of the earphone terminal 54 of mobile phone or not shown mobile phone.In addition, digital music data is being carried out D/A when conversion, the analog music signals that is converted is being exported to the boombox of earphone terminal 54 or not shown mobile phone.In addition, digital audio data is being carried out D/A when conversion, the analoging sound signal that is converted is being exported to the boombox of earphone terminal 54 or not shown mobile phone.In addition, when the digital modulation data having been carried out the D/A conversion, the modulated-analog signal that is converted is outputed to sending part 15.
The switching of such object output is for example to be carried out according to the control program that is stored among the ROM13 by DSP34.For example, set in advance the diverter switch of object output at the deferent segment of D/A converter 14.And, specifying music information such as the acoustic information that receives by radio reception tuner 21, the MP3 that from external memory storage 51, reads and under the acoustic information of the Simulation with I/F31 input boombox or the situation of output such as earphone by mobile phone, by the control of DSP34, diverter switch is switched to earphone terminal 54 or not shown mobile phone boombox on.And send to by modulation under the situation of mobile phone outside having specified the MP3 music information of reading from external memory storage 51, from the acoustic information of Simulation with I/F31 input, by the control of DSP34, diverter switch is switched on the sending part 15.
As shown in Figure 5, in the modulation output device 30 of the 3rd execution mode, by the processing relevant of DSP34 handle, the processing relevant, a relevant processing and music information that is reproduced modulated and the processing of wireless transmission is all carried out as Digital Signal Processing with analog sound information with the regeneration of music information such as MP3 with the demodulation of the intermediate-freuqncy signal of radio broadcasting.Thus, can carry out the processing of 4 kinds of contents, thereby not need corresponding each contents processing and the circuit of different treatment systems is set by a DSP34.
In addition, even about the digital data conversion from DSP34 output being become the D/A converter of analog signal, also need not be provided with respectively, and be to use a D/A converter 14 to change, and the content of corresponding each processing is switched object output at the processing of 4 kinds of contents.Thus, do not need to be provided with a plurality of D/A converters.
And, about being used for supplying with the A/D converter of numerical data to DSP34, need and will not convert the purpose of numerical data and setting respectively to by the analoging sound signal of simulation regenerating unit 57 regeneration yet, and can use an A/D converter 33 to change at the purpose that the intermediate-freuqncy signal of radio broadcasting is converted to numerical data.Thereby do not need to be provided with a plurality of A/D converters.
Thus, can with simple as far as possible structure realize from the music informations such as MP3 of external memory storage 51 regeneration by mobile phone boombox or the function of output such as earphone, by the boombox or the function of output such as earphone by mobile phone of the acoustic information of simulation regenerating unit 57 regeneration of outside, the function of outside and the function that the reception radio broadcasting is also regenerated are modulated and sent to the music information of regeneration and acoustic information, thereby can realize small-sized, the lightweight of mobile phone.
In addition, in above-mentioned the 3rd execution mode, to digital I/F11 is included in the inscape of modulation output device 30, and these examples that also are integrated on a slice chip are illustrated, but the invention is not restricted to this.Modulation output device of the present invention also can constitute and comprise digital I/F11 ROM13, D/A converter 14, sending part 15, radio reception tuner 21, Simulation with I/F31, modulation portion 32, A/D converter 33 and DSP34 in addition, and these are integrated on a slice chip.
In addition, in above-mentioned the 3rd execution mode, to radio reception tuner 21 is included in the inscape of modulation output device 30, and also its example that is integrated on a slice chip is illustrated, but the invention is not restricted to this.Modulation output device of the present invention also can constitute digital I/F11, ROM13, D/A converter 14, sending part 15, Simulation with I/F31, modulation portion 32, A/D converter 33 and the DSP34 that comprises beyond the radio reception tuner 21, and these are integrated in structure on a slice chip.
In addition, in above-mentioned the 3rd execution mode, ROM13 is included in the inscape of modulation output device 30, and also its example that is integrated on a slice chip is illustrated, but also can be arranged on ROM13 the outside of chip.
In addition, in above-mentioned the 3rd execution mode, to the acoustic information of the radio broadcasting that will receive by radio reception tuner 21 by mobile phone boombox or the example of output such as earphone be illustrated, but also can constitute the structure that also can send to the outside for the acoustic information of radio broadcasting by modulation.
In addition, in above-mentioned the 3rd execution mode, to only being provided with 1 A/D converter 33 and D/A converter separately, shared A/D converter 33 in the digitlization of the digitlization of intermediate-freuqncy signal and analoging sound signal, to the simulation of earphone terminal 54 output and in the simulation output of sending part 15 example of shared D/A converter 14 be illustrated, but the present invention never is limited to the two example of shared A/D converter 33 and D/A converter 14.
In addition in above-mentioned the 3rd execution mode, the example of the processing of the input of the reception of carrying out radio broadcasting selectively or analoging sound signal is illustrated, but is not limited thereto.For example, also can utilize DSP34 both sides' data to be carried out parallel processing by the intermediate-freuqncy signal that generates by radio reception tuner 21 with from the analoging sound signal digitlization that Simulation with I/F portion 31 imports in the mode of timesharing.And, also can be the digital simulationization of the both sides after handling, one side when earphone terminal 54 is exported, the opposing party is sent to the outside from sending part 15.In this case, for 2 kinds of data parallel ground being carried out A/D conversion and D/A conversion, need each 2 A/D converters and D/A converter.But, about the processing beyond A/D conversion and the D/A conversion, owing to use at least one DSP34 just can carry out concurrently, so the circuit of different treatment systems need be set at each contents processing in this part.
In addition, in above-mentioned the 1st～the 3rd execution mode, the example that the music data of MP3 form is modulated and exported is illustrated, but the form of music data is not limited by it.Also can modulate and export the music data of other form, other form for example comprises: ACC (AdvancedAudio Coding), AC-3 (Dolby Digital), ATRAC3 (Adaptive TransformAcoustic Coding), TwinVQ, WMA (Windows Media Audio:Windows is a registered trade mark) etc.
In addition, in above-mentioned the 1st～the 3rd execution mode, the music data that handle is stored in the MP3 form in the memory 51 is illustrated by the example that digital I/F11 imports, but is not limited thereto.For example Shu Ru numerical data is not limited to music data, also can be the voice data beyond the music.In addition, also can utilize the not shown Department of Communication Force (in recent mobile phone generally all possess) different,, utilize DSP14,23,34 that it is handled by the Internet download music data or voice data with digital I/F portion 11.
In addition, in above-mentioned the 1st～the 3rd execution mode, to modulation output device 10,20,30, the example that is installed in the mobile phone are illustrated, but installed device is not limited thereto.For example, also can be installed in modulation output device 10,20,30 in PDA (Personal Digital Assistants), IC register, the portable MP 3 player etc.
In addition, in above-mentioned the 1st～the 3rd execution mode, to using the example of ROM13 to be illustrated as the storage medium of storage DSP12,23,34 control program, but storage medium is not limited to ROM.For example also can be EPROM or other semiconductor memory.
In addition, above-mentioned the 1st～the 3rd execution mode, only in order to implement a specific example of the present invention, these examples can not be interpreted as the qualification to technical scope of the present invention.That is, the present invention can implement with various forms in the scope that does not break away from aim of the present invention or principal character.
(industrial utilizability)
The present invention can be applicable to can be from digital music information such as MP3 of regeneration such as external memory storages Or outside mobile phone is modulated and sent to the analog sound information of externally equipment regeneration And in other electronic equipment.
Claims (9)
1. a modulation output device is characterized in that, comprising:
Digital interface portion, it imports the 1st digital audio data;
Processor, it as required, carry out generating the processing of the 1st digital modulation data, and export any one data of described the 1st digital audio data or described the 1st digital modulation data implementing modulation from described the 1st digital audio data of described digital interface portion input;
D/A converter, its described the 1st digital audio data and described the 1st digital modulation data transaction by described processor output becomes analog signal, the 1st analoging sound signal from the conversion of described the 1st digital audio data is outputed to the boombox or the earphone terminal of equipment, and the 1st modulated-analog signal from described the 1st digital modulation data transaction is outputed to sending part; With
Described sending part, its 1st modulated-analog signal from described D/A converter output sends to the outside from transmitting antenna,
Described modulation output device is constituted as, and described digital interface portion, described processor, described D/A converter and described sending part are integrated on a slice chip.
2. a modulation output device is characterized in that, comprising:
Digital interface portion, its input digit voice data;
Processor, it carries out generating implementing decoding from the described voice data of described digital interface portion input the processing of the 1st digital audio data, and as required, carry out generating the processing of the 1st digital modulation data to implementing modulation by the 1st digital audio data of described decoder generation;
D/A converter, its described the 1st digital audio data and described the 1st digital modulation data transaction by described processor output becomes analog signal, the 1st analoging sound signal from the conversion of described the 1st digital audio data is outputed to the boombox or the earphone terminal of equipment, and the 1st modulated-analog signal from described the 1st digital modulation data transaction is outputed to sending part; With
Described sending part, its 1st modulated-analog signal from described D/A converter output sends to the outside from transmitting antenna;
Described modulation output device is constituted as, and described digital interface portion, described processor, described D/A converter and described FM sending part are integrated on a slice chip.
3. a modulation output device is characterized in that, comprising:
Tuner, it receives broadcasting wave and generates intermediate-freuqncy signal;
A/D converter, its intermediate-freuqncy signal from described tuner output converts digital broadcast data to;
Digital interface portion, its input digit voice data;
Processor, it carries out following processing selectively, promptly generates the processing of digital demodulation data to implementing demodulation from the digital broadcast data of described A/D converter output, to implementing decoding from the described voice data of described digital interface portion input and generating the processing of the 1st digital audio data and the 1st digital audio data that is generated by described decoder is modulated and generated the processing of the 1st digital modulation data;
D/A converter, its described digital demodulation data, described the 1st digital audio data and described the 1st digital modulation data transaction by described processor output becomes analog signal, outputing to the boombox or the earphone terminal of equipment, and the 1st modulated-analog signal from described the 1st digital modulation data transaction is outputed to sending part from the analogue demodulated signal of described digital demodulation data transaction and from the 1st analoging sound signal of described the 1st digital audio data conversion; With
Described sending part, its 1st modulated-analog signal from described D/A converter output sends to the outside from transmitting antenna,
Described modulation output device is constituted as, and described tuner, described A/D converter, described digital interface portion, described processor, described D/A converter and described sending part are integrated on a slice chip.
4. a modulation output device is characterized in that, comprising:
Tuner, it receives broadcasting wave and generates intermediate-freuqncy signal;
Analog interface portion, it imports analoging sound signal;
Modulation portion, it is complementary for the frequency that makes described intermediate-freuqncy signal and the frequency of described analoging sound signal, and the frequency of at least one side in described intermediate-freuqncy signal and the described analoging sound signal is changed;
A/D converter, it is to carrying out analog/digital conversion by described modulation portion with intermediate-freuqncy signal and the analoging sound signal that frequency modulation(FM) becomes to be complementary, described intermediate-freuqncy signal is converted to digital broadcast data, and described analoging sound signal is converted to the 2nd digital audio data;
Described modulation output device is constituted as, and described tuner, described analog interface portion, described modulation portion and described A/D converter are integrated on a slice chip.
5. modulation output device according to claim 4 is characterized in that, also comprises:
Processor, it carries out following processing selectively, promptly generates the processing of digital demodulation data and the processing that generates the 2nd digital modulation data to being modulated by described the 2nd digital audio data of described A/D converter output to implementing demodulation from the described digital broadcast data of described A/D converter output;
D/A converter, its described digital demodulation data and described the 2nd digital modulation data transaction by described processor output becomes analog signal, analogue demodulated signal from described digital demodulation data transaction is outputed to the boombox or the earphone terminal of equipment, and the 2nd modulated-analog signal from described the 2nd digital modulation data transaction is outputed to sending part; With
Described sending part, its 2nd modulated-analog signal from described D/A converter output sends to the outside from transmitting antenna;
Described modulation output device is constituted as, and described tuner, described analog interface portion, described modulation portion, described A/D converter, described processor, described D/A converter and described sending part are integrated on a slice chip.
6. a modulation output device is characterized in that, comprising:
Digital interface portion, its input digit voice data;
Analog interface portion, it imports analoging sound signal;
A/D converter, its analoging sound signal from the input of described analog interface portion converts the 2nd digital audio data to;
Processor, it carries out following processing selectively, promptly generate implementing decoding from the voice data of described digital interface portion input the 1st digital audio data processing, described the 1st digital audio data that is generated by described decoder is implemented modulation and is generated the processing of the 1st digital modulation data and the processing that generates the 2nd digital modulation data to implementing modulation by the 2nd digital audio data of described A/D converter output;
D/A converter, its described the 1st digital audio data, described the 2nd digital audio data, described the 1st digital modulation data and described the 2nd digital modulation data transaction by described processor output becomes analog signal, the the 1st, the 2nd analoging sound signal from the conversion of described the 1st, the 2nd digital audio data is outputed to the boombox or the earphone terminal of equipment, and the 1st, the 2nd modulated-analog signal from described the 1st, the 2nd digital modulation data transaction is outputed to sending part; With
Described sending part, its 1st, the 2nd modulated-analog signal from described D/A converter output sends to the outside from transmitting antenna;
Described modulation output device is constituted as, and described digital interface portion, described analog interface portion, described A/D converter, described processor, described D/A converter and described sending part are integrated on a slice chip.
7. a modulation output device is characterized in that, comprising:
Tuner, it receives broadcasting wave and generates intermediate-freuqncy signal;
Digital interface portion, its input digit voice data;
Analog interface portion, it imports analoging sound signal;
Modulation portion, it is complementary for the frequency that makes described intermediate-freuqncy signal and the frequency of described analoging sound signal, and the frequency of at least one side in described intermediate-freuqncy signal and the described analoging sound signal is changed;
A/D converter, it carries out analog/digital conversion by described modulation portion with intermediate-freuqncy signal and the analoging sound signal that frequency modulation(FM) becomes to be complementary, described intermediate-freuqncy signal is converted to digital broadcast data, and described analoging sound signal is converted to the 2nd digital audio data;
Processor, it carries out following processing selectively, promptly generate implementing demodulation from the digital broadcast data of described A/D converter output the digital demodulation data processing, generate the processing of the 1st digital audio data to implementing decoding, described the 1st digital audio data that is generated by described decoder implemented modulation and generated the processing of the 1st digital modulation data and the processing that generates the 2nd digital modulation data to implementing modulation from described the 2nd digital audio data of described A/D converter output from the voice data of described digital interface portion input;
D/A converter, it is by the described digital demodulation data of described processor output, described the 1st digital audio data, described the 2nd digital audio data, described the 1st digital modulation data and described the 2nd digital modulation data transaction become analog signal, from the analogue demodulated signal of described digital demodulation data transaction and from the described the 1st, the 1st of the 2nd digital audio data conversion, the 2nd analoging sound signal outputs to the boombox or the earphone terminal of equipment, and handle is from the described the 1st, the 1st of the 2nd digital modulation data transaction, the 2nd modulated-analog signal outputs to sending part; With
Described sending part, its described the 1st, the 2nd modulated-analog signal from described D/A converter output sends to the outside from transmitting antenna;
Described modulation output device is constituted as, and described tuner, described digital interface portion, described analog interface portion, described modulation portion, described A/D converter, described processor, described D/A converter and described sending part are integrated on a slice chip.
8. according to any described modulation output device in the claim 1～7, it is characterized in that a described chip constitutes by carrying out CMOS technology.
9. according to any described modulation output device in the claim 1～7, it is characterized in that the modulation that described processor carried out is that quadrature modulation is handled.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004179518 | 2004-06-17 | ||
| JP179518/2004 | 2004-06-17 | ||
| JP238293/2004 | 2004-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1906859A true CN1906859A (en) | 2007-01-31 |
Family
ID=37675037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580001558 Pending CN1906859A (en) | 2004-06-17 | 2005-06-17 | Modulation output device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1906859A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359918B (en) * | 2007-08-02 | 2012-05-30 | 合邦电子股份有限公司 | Digital frequency-modulation stereo emitter and digital frequency-modulation duplex circuit |
| CN110278508A (en) * | 2010-10-02 | 2019-09-24 | 广州市智专信息科技有限公司 | A kind of audiogenic device and its control method, earphone |
-
2005
- 2005-06-17 CN CN 200580001558 patent/CN1906859A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359918B (en) * | 2007-08-02 | 2012-05-30 | 合邦电子股份有限公司 | Digital frequency-modulation stereo emitter and digital frequency-modulation duplex circuit |
| CN110278508A (en) * | 2010-10-02 | 2019-09-24 | 广州市智专信息科技有限公司 | A kind of audiogenic device and its control method, earphone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100992047B1 (en) | Voice data rf wireless network ic | |
| CN1993893A (en) | Integrated low-if terrestrial audio broadcast receiver and associated method | |
| CN101416403A (en) | Transceiver having multiple signal processing modes of operation | |
| CN1713534A (en) | High frequency signal receiving apparatus | |
| TWI390859B (en) | Integrated wireless transceiver and audio processor | |
| CN101132382A (en) | Frequency modulation transmitter | |
| WO2008042134A2 (en) | Performing a coordinate rotation digital computer (cordic) operation for amplitude modulation (am) demodulation | |
| US20060280270A1 (en) | Method and system for FM communication | |
| JP4238266B2 (en) | Modulation output device | |
| US7822418B2 (en) | Device playback using radio transmission | |
| JP2004234603A (en) | Computer device having radio sound signal emission module | |
| JPWO2005125022A6 (en) | Modulation output device | |
| CN1906859A (en) | Modulation output device | |
| CN101459481A (en) | General purpose radio for amplitude modulation, frequency modulation and DRM | |
| US20100136921A1 (en) | Interface unit for display of alphanumeric data | |
| KR20010097838A (en) | Wireless transmitting and receiving device using fm broadcasting frequency for mp3 player and pc sound card | |
| CN101393766A (en) | Audio system and audio processing method | |
| JPH11178088A (en) | Method and system for transmitting/receiving audio signals | |
| CN220570583U (en) | Television singing system, circuit board and television | |
| KR100475661B1 (en) | A Audio Multi-channel Wireless LAN Transmission Equipment | |
| CN109119053B (en) | Signal transmission method and device, electronic equipment and computer readable storage medium | |
| US20040064840A1 (en) | Broadcasting method and apparatus using a PDA as a radio signal relay device | |
| KR200196564Y1 (en) | Wireless transmitting and receiving device using fm broadcasting frequency for mp3 player and pc sound card | |
| JPH0918443A (en) | Multi-carrier modulation type receiver | |
| JP2010200294A (en) | Digital data processing circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NIIGATA SEIMITSU CO., LTD.; APPLICANT Free format text: FORMER OWNER: NIIGATA SEIMITSU CO., LTD. Effective date: 20070928 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070928 Address after: Japan's Niigata Prefecture Applicant after: Niigato Precision Co., Ltd. Co-applicant after: Ricoh Co., Ltd. Address before: Japan's Niigata Prefecture Applicant before: Niigato Precision Co., Ltd. |
|
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |