WO2003067840A1 - Dispositif et procede de communication d'informations radio - Google Patents

Dispositif et procede de communication d'informations radio Download PDF

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Publication number
WO2003067840A1
WO2003067840A1 PCT/JP2003/001135 JP0301135W WO03067840A1 WO 2003067840 A1 WO2003067840 A1 WO 2003067840A1 JP 0301135 W JP0301135 W JP 0301135W WO 03067840 A1 WO03067840 A1 WO 03067840A1
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WO
WIPO (PCT)
Prior art keywords
signal
analog
information
analog pulse
information signal
Prior art date
Application number
PCT/JP2003/001135
Other languages
English (en)
Japanese (ja)
Inventor
Shunichi Matsumoto
Original Assignee
I.Den Videotronics Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by I.Den Videotronics Inc. filed Critical I.Den Videotronics Inc.
Priority to JP2003567055A priority Critical patent/JPWO2003067840A1/ja
Publication of WO2003067840A1 publication Critical patent/WO2003067840A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers

Definitions

  • the present invention relates to a communication device and method for transmitting and receiving information by wirelessly communicating a digital signal and an analog signal.
  • modulation methods such as AM (Amplitude Modulation), FM (Frequency Modulation), and PM (Phase Modulation) are generally widely used.
  • digital modulation methods such as ASK (Amplitude Shift Keying), FSK (Frequency Shift Keying), and PSK (Phase Shift Keying) are used for telemeters, ETC (Electronic Toll Collection), LAN, and the like.
  • the frequency occupied bandwidth per wave in the 2.4 GHz band is set to 26 MHz or less according to the standard (AR IB: Association of Radio Industries and Businesses STD-T66). It is specified that transmission and reception are performed using power digital communication method.
  • AR IB Association of Radio Industries and Businesses STD-T66.
  • broadcasting to the ground is carried out by modulation and demodulation communication using the FM system for video and the differential phase shift keying (DPSK) system for audio.
  • DPSK differential phase shift keying
  • transmitting and receiving voice and analog signals which are 63 ⁇ 4f elephant signals
  • digital communication has limitations due to the wide frequency occupied bandwidth according to the Radio Law, and AZD conversion, compression, and decompression techniques for analog signals.
  • the present invention does not require complicated compression and decompression techniques, saves power, is compliant with the Radio Law, and has a simple electronic circuit system, digital data, voice, high image quality, etc. It is an object of the present invention to provide a wireless information communication device and method capable of transmitting such information through a multi-channel communication channel with excellent secrecy. Disclosure of the invention
  • the wireless information communication device comprises: an analog pulse modulation means for sampling an analog information signal by a modulation process according to a predetermined analog pulse modulation method and outputting an analog pulse data signal; Information signal generating means for generating an information signal to be transmitted from an analog pulse data signal output from the means, and the information signal is configured to be wireless.
  • the analog information signal is not particularly limited as long as it is a signal representing voice, ⁇ , and various data information in an analog manner. It may be a signal obtained by modulating according to the analog modulation method.
  • the analog pulse modulation means may use any analog pulse modulation method such as PAM, PWM, and PPM as the analog pulse modulation method.
  • the touch information signal generating means includes digital modulation means for modulating the analog pulse data signal according to a predetermined digital modulation method and outputting a modulation information signal. It can be configured to generate an information signal to be described based on the modulation information signal.
  • the digital modulation means can use any digital modulation method such as ASK, FSK, MS MS, BPSK :, QPSK, QAM, OFDM as a digital modulation method.
  • the wireless information communication apparatus has a channel conversion U code generating means for generating a channel assignment I code, wherein the self information signal generating means includes the analog pulse data signal and the channel conversion IJ code.
  • An information signal can be generated based on the channel tone IJ code from the generating means.
  • a wireless information communication device includes a receiving unit that receives an information signal to generate a received information signal, and converts the received information signal obtained by the receiving unit into a data signal that becomes an analog pulse signal. And an analog pulse demodulator for demodulating a data signal obtained by the signal converter into an analog information signal in accordance with a predetermined analog pulse demodulation method.
  • an information signal based on an analog pulse signal obtained by converting an analog information signal such as voice can be received, and the analog signal can be obtained without using a decompression technique corresponding to a compression technique associated with A / D conversion.
  • a receiving device for reproducing the audio information signal it is possible to realize a receiving device for reproducing the audio information signal.
  • a wireless information communication apparatus wherein the signal conversion means converts the received information signal into the data signal and a word channel code, and a channel identification code generation means for generating a reception channel code.
  • First conversion means for converting the speech channel code obtained by the signal conversion means into an analog speech channel identification signal; and a reception channel tone code from the fiif self-channel ij code generation means.
  • Second converting means for converting the signal into a channel signal for receiving an analog signal; Correlation timing detection means for inputting the analog channel identification signal and the Ml channel analog reception signal, and outputting a timing signal when the correlation is obtained,
  • the data signal obtained by the conversion means can be supplied to the rt self analog pulse demodulation means in synchronization with the timing signal output from the tooth self-correlation timing detection means.
  • the wireless information communication device may be configured such that the correlation timing detecting means has a surface acoustic wave (SAW) component.
  • SAW surface acoustic wave
  • the matching between the receiving channel code generated on the receiving side and the transmission channel-like recoding from the transmitting side can be easily and quickly transferred, and the I3 ⁇ 4
  • the wireless information communication method includes: a step of sampling an analog information signal by a modulation process according to a predetermined analog pulse modulation method to output an analog pulse data signal; Generating an information signal to be said, and wirelessly speaking the edited information signal.
  • analog information signals such as audio and video into analog pulse signals
  • information can be easily transmitted without using a compression technique associated with AZD conversion.
  • the wireless communication method includes a step of receiving an information signal to generate a received information signal; a step of converting the received information signal into a data signal to be an analog pulse signal; Demodulating to an analog information signal in accordance with a predetermined analog pulse demodulation method.
  • FIG. 1 is a block diagram showing a wireless information communication apparatus according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing a configuration of a part for generating a reception information signal in the wireless information communication apparatus according to the second embodiment of the present invention.
  • FIG. 3 is a block diagram illustrating a configuration of a portion that performs signal demodulation in a wireless information communication device according to a second embodiment of the present invention.
  • the wireless information communication device is a communication device for transmitting information, and is configured as shown in FIG.
  • the wireless information communication device (hard device) includes a stereo modulator 11, an elephant amplifier 12, an audio analog modulator 13, an elephant analog modulator 19, an audio analog pulse modulator 14, Analog pulse modulator 26, reference synchronous clock generator 15, frequency multiplexing synchronization circuit 16, QPS K3 ⁇ 417, transmission channel identification IJ code generator 18, frequency conversion 20, a high-frequency power amplifier, a bandpass filter 22, and a transmission antenna 23.
  • the word unit further includes a CPU 24 and a memory circuit 25.
  • an audio signal serving as an analog signal and an i ⁇ signal are input to individual input terminals.
  • the audio signal is a stereo signal.
  • Two audio signals are separately input to the stereo modulator 11, and the stereo modulator 11 outputs a stereo composite signal.
  • the elephant signal is input to the video amplifier 12 and amplified.
  • the stereo composite signal (audio signal) from the stereo modulator 11 as an analog signal is modulated in accordance with the PM (Phase Modulation) method by the audio analog modulator 13 and the analog output is output from the elephant amplifier 12.
  • the signal is modulated by the analog analog modulator 19 according to the PM method.
  • the audio analog modulated signal output from the audio analog modulator 13 is converted into a PPM (Pulse Pulse) by an audio analog pulse modulator 14 operating in synchronization with a reference synchronous clock generator 15 reference clock. It is further modulated (sampled) according to the Phase Modulation) method and converted to an audio analog pulse data signal.
  • the analog modulation signal output from the analog analog modulation circuit 19 is The analog pulse modulator 26, which operates in synchronization with the reference clock from the clock generator 15, further modulates (samples) the analog pulse data according to the PPM method and converts it into an analog pulse data signal.
  • the reference synchronous clock generator 15 A multiplexing synchronous circuit 16 for return controlled by the CPU 24 that operates in synchronization with the frequency-divided clock of 5
  • 3 ⁇ 4 ⁇ analog pulse modulator 26 are input.
  • the multiplexing synchronizing circuit 16 for weekly multiplexes the fflf self-voice analog pulse data signal and the analog pulse data signal in synchronization with the reference clock from the reference synchronous clock generator 15 to multiplex information. Outputs a signal.
  • the stereo composite signal (audio signal) from the stereo modulator 11 is actually supplied to the video analog modulator 13 via an audio low-pass filter (not shown), and the amplifier 12 Is supplied to the video analog modulator 19 via a low-pass filter for the actual use.
  • the multiplexed information signal output from the transmission multiplex synchronization circuit 16 is input as an I signal to a QPSK (Quadrature Phase Shift Keying) modulator 17 (digital modulator) and modulated according to the QPSK method.
  • the channel identification code generator 18 for speech is controlled by the CPU 24 using the memory circuit 25, and outputs a channel identification code.
  • the channel identification code from the speech channel code generator 18 is supplied to the QPS P modulator 17 as a Q signal paired with the I signal (multiplexed information signal).
  • ASK, FSK, or BPSK (Binary Phase Shift Keying) modulator is used instead of the QPSK modulator 17, multiplexing processing for audio, video, and channel code signals is required.
  • a modulated signal of information output from the QPSK modulator 17 is converted into a frequency in a quasi-microwave band by the frequency converter 20 and further amplified to a predetermined power level by the high-frequency power amplifier 21. Then, the high-frequency modulated signal having a predetermined power level in the high-frequency power amplifier 21 is radiated from the antenna 23 to free space through the bandpass filter 22.
  • the analog signal becomes The voice signal and the input signal are processed in the order of analog modulation, analog noise modulation, and digital modulation using the frequency of the VHF band, and are converted into the frequency of the quasi-mic mouthband.
  • analog pulse modulation in this way, there is no need to perform complicated compression processing associated with analog-to-digital conversion (A / D conversion) as in the past, and simple digital conversion can be performed.
  • the reference synchronization clock generator 15 can be configured with a PLL circuit using a VCO (Voltage Controlled Oscillator) with an analog circuit, and a high-speed reference clock can be generated with a simple configuration. Can be.
  • VCO Voltage Controlled Oscillator
  • a QPSK modulator 17 that inputs a multiplexed signal of a voice signal and a ⁇ signal as an I signal, inputs a channel fSiJ code as a Q signal, and performs a modulation process on the I signal and the Q signal.
  • the frequency occupied band is 1/2 that of the BPSK modulator.
  • the CPU 24 using the memory circuit 25 can control the audio signal and the video signal, for example, by controlling the channel identification code used for reproducing the audio and the S image. It is also possible to indicate only the audio signal or only the frame (still image with the elephant signal) as valid information. In this case, substantial code division multiplexing communication is performed.
  • the wireless information communication apparatus is a receiving apparatus that receives the modulated information signal described above from the message apparatus as described above (see FIG. 1). It is configured as shown.
  • this wireless communication ⁇ communication device (reception device) is composed of a reception antenna 51a, 51b, a band-pass filter 52, a high-frequency low-noise amplifier 53, and a frequency converter »5 4. It has an intermediate frequency amplifier 55 and an antenna switching switch 64. As shown in Fig. 3, this wireless information communication device further comprises (3-3 demodulator 56, audio analog pulse demodulator 57, reference synchronous clock generator 58, receiving separation synchronous circuit
  • Carrier generator 65 Channel transcoder for receiving 66, High frequency amplifier 67, Envelope detector 68, Analog Z digital reverberation (A / D modification) 6 9, »Analog pulse demodulator 70, Elephant analog demodulator 71, Amplifier 72, Channel identification code change» 73, First double modulator (DBM) 74, S AW (Surface Acoustic Wave) has a combo repeller 75 and a second double modulator (DBM) 76.
  • DBM First double modulator
  • S AW Surface Acoustic Wave
  • the modulated information signal transmitted by the wireless information communication device is received by the receiving antennas 51a and 51b for dipersity shown in FIG.
  • One of the diversity receiving antennas 51 a and 51 b is connected to the bandpass filter 52 by a switching switch 64 controlled by the CPU 62.
  • a received modulation information signal is input from the receiving antenna 51a or 51b connected to the bandpass filter 52 to the high-frequency noise amplifier 53 via the bandpass filter 52, and is amplified. Is converted to the required VHF band intermediate frequency signal. Further, the intermediate frequency signal is amplified by an intermediate frequency amplifier 55 and then input to a QPSK demodulator 56 shown in FIG.
  • the demodulator 56 performs demodulation processing corresponding to the modulation processing in the QPSK modulator 17 shown in Fig. 1, and the multiplexed signal of voice and ⁇ is demodulated as an I signal by the demodulation processing.
  • the channel identification code is demodulated as a Q signal
  • the I signal (multiplexed information signal) from the QPSK demodulator 56 is separated in synchronization with the reference clock from the reference synchronous clock generator 58 Is separated into an audio data signal corresponding to audio and a video data signal corresponding to video by the reception separation synchronization circuit 59.
  • the audio data signal from the reception separation synchronization circuit 59 is used as an analog pulse signal. Input to the audio analog pulse demodulator 57.
  • the audio analog pulse demodulator 57 is synchronized with the reference clock from the reference synchronous clock generator 58, and the audio analog pulse modulator shown in Fig. 1 is used.
  • Analogue pulse modulation processing (P PM) in 14 According to the demodulation processing, the audio data signal input as the analog pulse signal is demodulated, and an audio analog modulation signal synchronized with the reference clock is obtained.
  • the data signal from the separation and synchronization circuit 59 is input as an analog pulse signal to the analog pulse demodulator 70.
  • the analog pulse demodulator 70 is synchronized with the reference clock from the reference synchronous clock generator 58.
  • a demodulation process corresponding to the analog pulse modulation process (PPM) in the video analog pulse modulator 26 shown in Fig. 1 is performed.
  • the elephant data signal input as the Norse signal is demodulated, and an elephant analog modulation signal synchronized with the IUIB reference clock is obtained.
  • the receiving reference synchronous clock generator 58 can be configured according to the same design method as the transmitting reference synchronous clock generator 15 in the communication device (see FIG. 1).
  • the audio analog modulated signal output from the audio analog pulse demodulator 57 is input to the audio analog demodulator 60.
  • the audio analog demodulator 60 performs demodulation processing corresponding to the modulation processing (PM) in the audio analog modulator 13 shown in FIG. This demodulation process demodulates the touch voice analog modulation signal into a voice signal.
  • the video analog modulation signal output from the analog pulse demodulator 70 is input to the analog analog demodulator 71.
  • Ana port grayed demodulator 7 1 by 0 the demodulation process for demodulating process corresponding to the modulation processing in ⁇ Ana port grayed modulator 1 9 shown in FIG. 1 (PM), fill yourself elephant Ana port grayed modulated signal Is demodulated into an elephant signal.
  • the audio signal output from the audio analog demodulator 60 is further demodulated into an audio stereo signal by the stereo demodulator 61, and the audio stereo signal is used for stereo audio reproduction.
  • the ⁇ signal output from the analog demodulator 71 is amplified by the ⁇ amplifier 72, and the amplified I ⁇ signal is used for reproduction of the I I image.
  • the channel identification code output as a Q signal from the QPSK demodulator 56 is converted into a digital signal having a generated impedance of 50 ohms, for example, by the channel recode conversion 733.
  • a digital signal enters the IF port of the first double modulator (DBM) 74.
  • the LO port of the first duplex modulator 74 receives, for example, a carrier of 200 MHz from the carrier generator 65, and the RF port outputs a two-phase phase modulated (BPSK) signal. (Weekly channel IJ signal) is output.
  • the signal of the two-phase modulation is input to one input terminal of the SAW compolator 75.
  • the carrier of 200 MHz distributed from the carrier generator 56 is input to the LO port of the second double modulator (DBM) 76, and the reception channel identification code generator 6 is input to the IF port thereof.
  • 6-channel code is input and received from its RF port BP SK modulation signal (receive channel ls signal) is output.
  • the receiving reference BPSK modulation signal is input to the other input terminal of the SAW convolver 75.
  • a correlation signal is output from the output terminal of the SAW convolver 75 when the transmission and reception channel identification codes match, and the correlation signal is amplified by the high frequency amplifier 67 and then detected by the envelope detector 68.
  • the detection signal is converted into a digital signal by the AZD transformer 69 operating in synchronization with the reference clock from the reference synchronization clock generator 58 and input to the reception separation synchronization circuit 59.
  • the receiving / separating synchronization circuit 59 uses the input detection signal (a digital signal indicating the timing at which the transmission / reception channel reversal codes match) as a bit synchronization signal or a frame synchronization signal for audio and video.
  • the wireless information communication device (reception device) shown in Fig. 2 uses a SAW convolver 75 to detect the correlation between the channel identification code between transmission and reception.
  • SAW convolver 75 uses a SAW convolver 75 to detect the correlation between the channel identification code between transmission and reception.
  • other correlations such as SAW matched filters and digital matched filters are used.
  • a vessel can also be used.
  • the CPU 62 using the memory circuit 63 controls the reception channel fS re-code, so that the audio signal and the elephant signal to be obtained can be controlled, so that only the audio signal or a frame containing the video signal can be obtained. (Still image) alone can be played.
  • the description has been given based on the 2.4 GHz band standard (ARI B STD—T66).
  • ARI B STD—T66 the high speed wireless LAN
  • MMA C the high speed wireless LAN in the 5. lGHz to 5.2 GHz band and the standard in the millimeter wave band have been described. It can be used according to the standard.
  • the wireless communication device is smaller in cost, smaller, simpler, and consumes less power than a wireless communication device that transmits voice and sound according to the conventional spread spectrum method. Since analog pulse signals conforming to (standard AR IB ST-T66) are used, it is possible to reproduce faithful continuous video with high image quality including sound.
  • the audio analog modulator 13 and the video analog modulator 19 perform modulation processing according to the PM method.
  • modulation processing may be performed according to the AM method or the FM method. It is also possible to directly perform analog pulse modulation on an analog signal without using an analog modulator such as the audio analog modulator 13 and the video analog modulator 19.
  • the wireless information communication device (receiving device) shown in FIG. 2 it is not necessary to use a demodulator corresponding to the analog modulator.
  • QPSK modulator 17 other digital modulation methods such as ASK :, FSK, MSK (Minimum Shift Keying), BPSK, QAM (Quadrature Amplitude modulation), OFDM (Orthogonal Frequency division multiplex), etc. It may be a digital modulator that performs modulation processing. Furthermore, the audio analog pulse modulator 14 and the video analog pulse modulator 26 perform modulation processing in accordance with the PPM method, but PAM (Pulse Amplitude Modulation), PWM (Pulse Width Modulation), etc. The modulation may be performed by another modulation method.
  • the receiving device When the modulation method of the audio analog modulator i 3 , ⁇ analog modulator 19, audio analog pulse modulator 14 and elephant analog pulse modulator 26 is changed, the receiving device (see Fig. 3) The demodulation method in the audio analog demodulator 60, the video analog demodulator 71, the audio analog pulse demodulator 57, and the video analog pulse demodulator 70 in) is also changed according to the change of the modulation method.
  • a QPSK modulator is replaced with a digital modulator using another digital modulation method
  • a digital demodulator corresponding to the digital modulator is replaced with a QPSK demodulator 5 in the receiver (see Fig. 3). It will be used instead of 6.
  • information is transmitted and received in which audio and elephant are multiplexed.
  • transmission and reception of a single analog information signal may be performed. It is possible.
  • a multiplexed signal obtained by multiplexing a channel f fiJ code in addition to the audio analog pulse data signal and the mf elephant aperture ganoless data signal is input to the QPSK modulator 17 as an I signal, and other information signals are input. It can be configured to be input to the QPSK modulator 17 as a Q signal. In this way, it is possible to enrich the information reproduced on the receiving device side and to perform various controls on information reproduction based on the information signal on the receiving device side.
  • analog information signals such as voice and ⁇ into analog pulse signals, it is possible to use a simple and simple technique without using compression and decompression techniques accompanying A / D conversion. Digitization is possible with electronic circuits, and miniaturization and power saving can be measured.
  • spatial diversity is realized by antenna switching control by the CPU 62, and multipath fading countermeasures can be taken.
  • a linear high-quality image peculiar to analog signals can be obtained, and a useful digital communication system that complies with regulations on power frequency occupied bandwidth can be realized.
  • digital data, voice, and video signals can be transmitted in a frequency bandwidth within the legal regulations.
  • the communication channel can be multi-channeled, Use efficiency is improved.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Television Systems (AREA)

Abstract

Dispositif de communication d'informations radio possédant des modulateurs d'impulsions analogiques (14, 26) servant à échantillonner des signaux d'information analogique au moyen d'un traitement par modulation correspondant à un processus prédéterminé de modulation d'impulsions analogiques afin de sortir des signaux de données d'impulsion analogique, ainsi que des unités (16, 17, 20, 21, 22) servant à produire sur la base des signaux de données d'impulsion analogique des signaux d'information à transmettre, ce dispositif étant conçu pour effectuer la transmission radio de ces signaux d'information.
PCT/JP2003/001135 2002-02-05 2003-02-04 Dispositif et procede de communication d'informations radio WO2003067840A1 (fr)

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JP2003567055A JPWO2003067840A1 (ja) 2002-02-05 2003-02-04 無線情報通信装置及び方法

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JP2002-27943 2002-02-05
JP2002027943 2002-02-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010525749A (ja) * 2007-04-24 2010-07-22 アビエーション コミュニケーション アンド サーベイランス システムズ エルエルシー Ａｔｃ重畳データリンクを提供するためのシステム及び方法

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JPH03213078A (ja) * 1990-01-18 1991-09-18 Matsushita Electric Ind Co Ltd 伝送装置
JPH0567998A (ja) * 1991-03-20 1993-03-19 Sony Corp 送受信装置
JPH0621991A (ja) * 1992-03-30 1994-01-28 Toshiba Corp 変調器
JPH10224192A (ja) * 1997-02-06 1998-08-21 Sony Corp Ｐｐｍ変調回路
JPH114205A (ja) * 1997-06-11 1999-01-06 Sony Corp 伝送装置及び伝送方法
JPH11234241A (ja) * 1998-02-09 1999-08-27 Yrp Idou Tsushin Kiban Gijutsu Kenkyusho:Kk スペクトル拡散多重伝送装置
JP2001308746A (ja) * 2000-04-25 2001-11-02 Mitsubishi Electric Corp 通信制御方法及び通信装置
JP2002027422A (ja) * 2000-07-12 2002-01-25 Sumitomo Electric Ind Ltd 情報送信装置および方法，情報受信装置および方法
JP2002057732A (ja) * 2000-05-30 2002-02-22 Matsushita Electric Ind Co Ltd 送信回路装置
JP2003060440A (ja) * 2001-08-21 2003-02-28 Miyota Kk アナログデータ通信装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03213078A (ja) * 1990-01-18 1991-09-18 Matsushita Electric Ind Co Ltd 伝送装置
JPH0567998A (ja) * 1991-03-20 1993-03-19 Sony Corp 送受信装置
JPH0621991A (ja) * 1992-03-30 1994-01-28 Toshiba Corp 変調器
JPH10224192A (ja) * 1997-02-06 1998-08-21 Sony Corp Ｐｐｍ変調回路
JPH114205A (ja) * 1997-06-11 1999-01-06 Sony Corp 伝送装置及び伝送方法
JPH11234241A (ja) * 1998-02-09 1999-08-27 Yrp Idou Tsushin Kiban Gijutsu Kenkyusho:Kk スペクトル拡散多重伝送装置
JP2001308746A (ja) * 2000-04-25 2001-11-02 Mitsubishi Electric Corp 通信制御方法及び通信装置
JP2002057732A (ja) * 2000-05-30 2002-02-22 Matsushita Electric Ind Co Ltd 送信回路装置
JP2002027422A (ja) * 2000-07-12 2002-01-25 Sumitomo Electric Ind Ltd 情報送信装置および方法，情報受信装置および方法
JP2003060440A (ja) * 2001-08-21 2003-02-28 Miyota Kk アナログデータ通信装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010525749A (ja) * 2007-04-24 2010-07-22 アビエーション コミュニケーション アンド サーベイランス システムズ エルエルシー Ａｔｃ重畳データリンクを提供するためのシステム及び方法

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