WO2002033862A1 - Dispositif de radiocommunication, dispositif d'emission et dispositif de reception - Google Patents
Dispositif de radiocommunication, dispositif d'emission et dispositif de reception Download PDFInfo
- Publication number
- WO2002033862A1 WO2002033862A1 PCT/JP2001/009105 JP0109105W WO0233862A1 WO 2002033862 A1 WO2002033862 A1 WO 2002033862A1 JP 0109105 W JP0109105 W JP 0109105W WO 0233862 A1 WO0233862 A1 WO 0233862A1
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- Prior art keywords
- wave
- signal
- user
- frequency
- video
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
- H04H20/74—Wireless systems of satellite networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/02—Arrangements for relaying broadcast information
Definitions
- the present invention relates to a wireless communication device, a transmission device, and a reception device, and particularly to a wireless communication device, a transmission device, and a reception device that wirelessly transmit a plurality of types of signals.
- the millimeter wave band transmitting / receiving apparatus includes a transmitter 1100 shown in FIG. 1OA and a receiver 1150 shown in FIG. 10B.
- the transmitter 1] .00 and the receiver 1 150 are composed of a baseband unit (indoor unit) and a radio unit (outdoor unit) as described below.
- the transmitter 1100 includes a modulator 1103 (symbol “MOD for voice” in the figure), a bandpass filter 1104 (symbol “FIL” in the figure), and an analog Z digital (A / D) converter 1109 and Baseband section including 1109R, FM modulator 1105, 2 passerby 1107a (symbol “X2" in the figure), 4 delay doubler 1107b (symbol in the figure, "X4"), a radio unit including an amplifier 1108 and an antenna 1106.
- a modulator 1103 symbol “MOD for voice” in the figure
- FIL bandpass filter
- a / D analog Z digital converter
- Baseband section including 1109R, FM modulator 1105, 2 passerby 1107a (symbol “X2" in the figure), 4 delay doubler 1107b (symbol in the figure, "X4")
- a radio unit including an amplifier 1108 and an antenna 1106.
- the baseband section in transmitter 1100 multiplexes the video signal and the audio signal.
- Audio signal input terminal L The audio stereo signals (R ⁇ L) input from 1 L and 1 102 R are converted to digital signals by the analog-to-digital converters 1109 L and 1109 R, and then the modulator Modulated by 1 103.
- the output of the modulator 1103 is combined with the video signal received from the video signal input terminal 1101 via the bandpass filter 1104. This makes it a birth band] A video transmission signal for the channel is generated.
- the generated video transmission signal is modulated by a 6 GHz band FM modulator 1105 (F: Frequency Modulation) included in the radio unit.
- the output of the FM modulator i ⁇ 05 is frequency-modulated by 8 times through the 2 ⁇ 11 1 7a and 4 ⁇ 1 1 1b, and further through the amplifier 11 ° 8 ⁇ It is width. Then, the generated millimeter-wave video transmission signal is radiated by the antenna 1 ] .06.
- the receiver 1 150 has a radio section including a local oscillator 1 151, a down converter 1 152, an antenna 1]. 56, and an FM demodulator] 1 53 (symbol “DEM” in the figure). , Filter and distributor 1 1 54 (symbol “FI” in the figure), audio demodulator 1 1 5 5 (symbol “DEM for audio” in the figure), and digital-analog (DZA) converter 1 1 5 7 L And a baseband section including 1157R.
- the downconverter 1152 downconverts the received video transmission signal based on the output of the local oscillator in the 50 GHz band;!, 15].
- a transmitter 1200 according to Reference 2 will be described with reference to FIGS.
- the transmitter 1200 comprises three types of millimeter-wave transmitters 210, 122 and 1230.
- Transmitter 1200 receives a video component signal (Y, Pb, Pr) as an input signal.
- the luminance signal Y is input to the millimeter-wave transmitter 1 2 10 via the input terminal 1 2 1 1
- the color difference signal P b is input to the millimeter-wave transmitter 1 2 1 via the terminal 1 2 2 1
- the color difference signal Pr is input to the millimeter wave transmitter 1230 via the terminal 1231.
- Millimeter-wave transmitter 1.210 has video amplifier ⁇ 2 1 2, temperature compensator 121 7, FM modulator 1 213, 4x multiplier 121 4 (symbol “X 4” in the figure), power amplifier 1 2 1 5 , And antenna 1216. Millimeter-wave transmitter; 1 220 video amplifier
- Millimeter-wave transmitter 1 230, Video amplifier 1232, Temperature compensator 1237, FM modulator 1233, 4 divider multiplier 1
- Each of the millimeter-wave transmitters 12, 10, 1220, and 1230 generates a radio signal modulated in the millimeter-wave band, radiates and emits a radio signal generated from the antennas 1216, 1226, and 1236.
- the signals Y, Pb, and Pr are configured to be multiplexed in space.
- each of the millimeter-wave transmitters 1210, 1220, and 1230 amplifies an input video component signal to an appropriate level with video amplifiers 122, 1222, and 1223.
- Outputs of the video amplifiers 1212, 1222, and 1223 are input to FM modulators 1213, 1223, and 1233, and are FM-modulated.
- the frequency of the FM-modulated signal is quadrupled by four multipliers 1214, 1224,] 234, and the frequency shift and the modulation frequency of the FM modulation are expanded.
- Each of the modulated signals that have been raised in the millimeter wave is output by the power amplifier 1 215, .1 225,
- the millimeter-wave band modulated signals ⁇ , Pb, and Pr are combined as one video signal in the space.
- the information that can be transmitted by one transceiver is video and There is only one channel including audio. Therefore, it is not possible to wirelessly connect video signals and broadcast wave signals from a plurality of electronic devices indoors or at home.
- TV broadcast waves Single V: television version
- video from electronic devices such as videos, DVDs (digital versatile discs), television cameras, and bassocons (sonic consoles) are used indoors. Audio signals cannot be wirelessly connected simultaneously and independently.
- the electronic device can be carried between rooms and at the same time could not be used in multiple places.
- the transmitter 12 ⁇ 0 according to Document 2 transmits a video component signal for a no vision.
- this transmitter 1200 it is also possible to transmit three channels of video in the NTSC system.
- transmitter 1200 requires several types of transmitters. In such a configuration using three types of transmitting units, stable demodulation cannot be performed on the receiving side if the stability of the FM modulator frequency fluctuates. Therefore, extremely stable frequency modulation is required.
- the frequency is multiplied by four in order to use the modulated wave as a millimeter wave radio frequency.
- the frequency fluctuation of the modulated wave is quadrupled, so the frequency stability is further degraded in the millimeter-wave radio frequency band.
- it is vulnerable to mechanical fluctuations and fluctuations in power supply voltage, making it difficult to carry and use between rooms.
- an object of the present invention is to provide a millimeter-wave compatible radio communication device, a transmission device, and a reception device capable of stably transmitting and receiving a plurality of different signal waves. Is to provide. Disclosure of the invention
- a wireless communication apparatus includes a broadcast wave including a terrestrial broadcast wave, a satellite broadcast wave, or a cable television broadcast wave and a user-specific signal wave different from the broadcast wave at different positions on a frequency axis.
- the transmitter includes a transmitter configured to transmit the arranged multiplex wave to the millimeter wave, and a receiver configured to receive the output of the transmitter and perform frequency down conversion of the broadcast wave and the user-specific signal wave.
- the transmitter includes a multiplexing circuit for multiplying the broadcast wave and the user-specific signal wave in accordance with the arrangement, and an amplifier for converting the multiplexed wave output from the multiplexing circuit into a millimeter wave.
- the receiver includes a receiving unit that receives the output of the transmitter, and a downconverter that performs frequency down conversion of the multiplex received by the receiving unit.
- the user-specific signal wave includes a video signal and an audio signal from at least one or more electronic devices including a television receiver, a video recorder, a video camera, and a personal computer. It is multiplexed with the satellite broadcast wave at the intermediate frequency stage and / or the terrestrial broadcast wave itself propagated from the ground, and is placed between the terrestrial broadcast wave frequency band and the satellite broadcast wave frequency band.
- the user-specific signal wave may be a signal wave obtained by modulating the video signal / audio signal by a plurality of modulating means.
- the multiplexing circuit includes a conversion circuit for converting a cable television broadcast wave into an intermediate frequency, and a circuit for multiplexing the intermediate frequency cable television broadcast wave and a user-specific signal wave.
- the receiver further includes: a distributor that distributes an output of the downconverter to a broadcast wave and a user-specific signal wave; and a demodulator that receives the output of the distributor and demodulates a user-specific signal wave. Including.
- the transmitter has a function of changing the frequency domain of the user-dedicated signal wave
- the receiver has a function of setting the use channel of the user-dedicated signal wave according to the frequency of the user-dedicated signal wave.
- a video component signal and an audio signal are input as user-specific signal waves
- the multiplexing circuit includes a modulating means for modulating the video component signal and the audio signal, and a circuit for multiplexing after modulation.
- a D-terminal video signal and an audio signal for high-definition are input as a user-dedicated signal wave
- the multiplexing circuit includes modulation means for modulating the D-terminal video signal and the audio signal and a circuit for multiplexing after the modulation. Including.
- a transmitting apparatus arranges a broadcast wave including a terrestrial broadcast wave, a satellite broadcast wave, or a cable TV broadcast wave, and a user-specific signal wave different from the broadcast wave at different positions on a frequency axis.
- a receiving apparatus includes a terrestrial broadcast wave, a satellite broadcast wave, Millimeter wave reception corresponding to a transmitter having a configuration in which a multiplex wave in which a broadcast wave including a cable TV broadcast wave and a user-specific signal wave different from the broadcast wave are arranged at different positions on a frequency axis to perform a millimeter wave transmission.
- a demodulator that receives the output of the distributor and demodulates the user-specific signal wave.
- the wireless communication device the transmitting device, and the receiving device, it is possible to simultaneously and independently wirelessly connect a TV broadcast wave and a video / audio signal from an electronic device such as a bass computer with indoors / at home. Therefore, the electronic device can be carried in the room ⁇ , and a plurality of the electronic devices can be used in different places at the same time. Furthermore, since the TV broadcast wave and the video / audio signal can support multiple channels, it is possible for a plurality of electronic devices to have different video / audio information respectively. Further, according to the wireless communication device, the transmitting device and the receiving device, the frequency band of the intermediate frequency band of satellite broadcasting and the frequency band of terrestrial broadcasting are multiplexed with the frequency band of the user area.
- FIG. 1 is a diagram showing an outline of the configuration of the millimeter wave transmitter 15 according to the first embodiment.
- FIG. 2 is a diagram showing an outline of the configuration of the millimeter wave receiver 29 according to the first embodiment.
- 3A to 3C are diagrams illustrating an example of an arrangement of signal waves according to the first embodiment.
- 4A to 4C are diagrams illustrating an example of an arrangement of signal waves according to the first embodiment.
- FIG. 5 is a diagram illustrating an example of use of the millimeter wave transceiver according to the first embodiment.
- FIG. 6 is a diagram illustrating an example of use of the millimeter wave transceiver according to the second embodiment.
- FIG. 7 is a diagram illustrating an example of an arrangement of CATV waves according to the second embodiment.
- FIG. 8 is a diagram showing an outline of a configuration of a millimeter-wave transmitter 15C compatible with CATV waves according to the second embodiment.
- FIG. 9 is a diagram showing an outline of a configuration of a millimeter wave receiver 29C for CATV waves according to the second embodiment.
- FIGS. 10A and 10B are diagrams showing an outline of the configuration of the millimeter-wave band transmitting / receiving device according to Document 1.
- FIG. 10A is a diagram showing an outline of the configuration of the millimeter-wave band transmitting / receiving device according to Document 1.
- FIG. 11 is a diagram showing an outline of a configuration of a millimeter-wave band transmission device according to Document 2.
- FIG. 12 is a diagram showing an overview of the transmitter of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the wireless communication device according to the first embodiment includes a millimeter wave transmitter 1.5 shown in FIG. 1 and a millimeter wave receiver 29 shown in FIG.
- the millimeter wave transmitter 15 will be described.
- the millimeter-wave transmitter 15 includes an IF multiplexing circuit 1, a millimeter-wave upconverter 4, and a millimeter-wave antenna 3.
- the IF multiplexing circuit:!. Will be described.
- the first and second TV broadcast waves (TV: television) are input to the connection terminals 6 and 5, respectively.
- the first and second TV broadcast waves include intermediate frequency waves of satellite broadcast.
- the D- signal combiner 9 is combined with the output of the signal combiner 8 described later by the signal combiner 9. As a result, a frequency multiplexed wave can be generated.
- the audio signal is input from the stereo audio signal input terminals 20 L and 20 R, and the video image signal is input from the video input terminal 2 OV.
- the received video signal is described as 20 V.
- An audio signal is input from the stereo audio signal input terminals 21 L and 21 R, and a video image signal is input from the video input terminal 21 V.
- the audio signal received at input terminal 21 L is referred to as 21 L, the audio signal received at input terminal 21 R as 21 R, and the video signal received at input terminal 2 IV as 2 IV.
- An audio signal is input from the stereo audio signal input terminals 22L and 22R, and a video image signal is input from the video input terminal 22V.
- the audio signal received at the input terminal 22L is referred to as 22L, the audio signal received at the input terminal 22R as 22R, and the video signal received at the input terminal 22V as 22V.
- an audio signal is input from the stereo audio signal input terminals 23 L and 23 R, and a video image signal is input from the video input terminal 23 V.
- the audio signal received at the input terminal 23 L is referred to as 23 L, the audio signal received at the input terminal 23 R as 23 R, and the video signal received at the input terminal 23 V as 23 V.
- the first modulation circuit 121 forms a first modulation wave signal in a microwave region.
- the second modulation circuit 122 forms a second modulated wave signal in the microwave region.
- a third modulation circuit 123 forms a third modulated wave signal in a microwave region.
- a fourth modulation circuit 124 forms a fourth modulated wave signal in the microwave region.
- a specific example of the first modulation circuit .121 will be described.
- a stereo composite signal is generated by a stereo modulator receiving the audio signal 20 L, 2 OR. Then, the generated stereo composite signal can be FM-modulated. Then, it is multiplexed with the video signal 20 V to generate a video / audio multiplex signal.
- the video / audio multiplex signal is FM-modulated by the FM modulator in the microwave region. As a result, a first modulated signal wave is generated.
- the audio signal and the video signal may be configured to be subjected to A / D (analog / digital) conversion and PCM encoding (pulse code modulation), and to be digitally modulated by a phase modulation method or the like, or VHF band (very high frequency) and upconverted to the microwave band.
- a / D analog / digital
- PCM encoding pulse code modulation
- VHF band very high frequency
- Each of the second modulation circuit 122, the third modulation circuit 123, and the fourth modulation circuit 124 has the same configuration and function as the first modulation circuit 121.
- the first to fourth modulated signal waves are combined by a signal combiner 8 and then input to a signal combiner 9.
- the signal combiner 9 combines the first and second TV broadcast waves with the first to fourth modulated signal waves. As a result, a multiplex wave is generated on the frequency axis.
- the D terminal is a terminal for inputting and outputting digital broadcast Hi-Vision signals, and consists of 14 pins. Since the signal at the D terminal has a large amount of information and a wide bandwidth, the luminance signal Y and the color difference signals Pb (Cb) and Pr (Cr) are transmitted independently.
- the D terminal includes a terminal for a control signal that changes the number of scanning lines and the spectrum ratio of the received broadcast.
- D terminal 25 is connected to signal lines of terminals 2 IV, 22 V, and 23 V
- D terminal 55 is connected to signal lines of terminals 51 V, 52 V, and 53 V.
- the D terminal is an interface for sending these signals together in a parallel cable.
- An example of the use of the D terminal will be described in a second embodiment.
- the millimeter wave up-converter 4 that receives the multiplex wave will be described.
- the millimeter-wave up-converter 4 includes an IF amplifier 10, a local oscillator 1'1, a frequency mixer (up-converter) 12, a filter 13, and a millimeter-wave amplifier 14.
- IF amplifier 10 receives the multiplex wave.
- the output of the IF amplifier 10 is up-converted in the frequency mixer 12 based on the output (fLOl) of the local oscillator; L 1.
- the output of the frequency mixer 12 is input to the filter 13 and then amplified by the millimeter-wave amplifier 14.
- the output of the millimeter-wave amplifier 14 is arranged such that the u- multiplexed wave radiated from the millimeter-wave antenna 3 is frequency-arrayed from the UHF band (ultra high frequency) to the microwave as shown in FIGS. 3A to 3C. .
- UHF band ultra high frequency
- the terrestrial broadcast wave (UHF) frequency band 61 As shown in FIG. 3A, from the lowest frequency, the terrestrial broadcast wave (UHF) frequency band 61, the user region 62, the first satellite broadcast wave (BS) frequency ⁇ 63, and The frequency of the second satellite broadcast wave (CS-R, CS-L) is arranged in the order of 64,65.
- the frequency band and the signal are represented using the same symbols.
- the user area is a signal other than a terrestrial digital broadcast wave and a satellite broadcast wave, and is a frequency area such as a personal information, for example, a signal (user area signal wave) obtained by modulating a video signal of a video camera. Means castle.
- the radio frequency of the terrestrial broadcast wave is the broadcast frequency itself when it propagates from the ground, and the first satellite broadcast wave is transmitted from the low noise block converter (LNB) attached to the parabolic antenna to the IF (medium (Between)
- LNB low noise block converter
- IF intermediate (Between)
- the IF frequency signal itself that has been frequency-converted to the frequency, and the second satellite broadcast wave is also the IF frequency signal that has been frequency-converted by the low-noise block converter.
- the second satellite wave may be a component of either the horizontal or vertical polarization, or a component of either the horizontal or vertical polarization. May be frequency-converted and rearranged on the frequency axis.
- both right-teZ left-handed polarized signals are used, either the right-handed or left-handed components may be frequency-converted and rearranged on the frequency axis.
- the user region 62 is arranged between the terrestrial broadcast wave frequency band 61 and the satellite broadcast wave intermediate frequency band 63 using the first to fourth modulation circuits 1 2 1 to 1 2 4. . More specifically, the frequencies of the modulated signals (carriers) of the first to fourth modulation circuits are expressed as follows: the user region 62 is the frequency band 61 of the terrestrial broadcast wave and the intermediate frequency band 63 3 of the satellite broadcast wave. It is decided to be placed between the two. This makes it possible to use the frequency efficiently because there is no unnecessary gap in the frequency band when upcoming to the millimeter wave band.
- terrestrial broadcast waves 61, user area signal waves 62, first satellite broadcast waves 63, and second satellite broadcast waves 64, 65 can be selected. In some cases, you may not use
- the frequency of the millimeter wave band of each TV broadcast wave is fixed; it can be arranged as shown below with a crane.
- Terrestrial broadcast wave UHF band + user area signal wave + first satellite broadcast wave + second satellite broadcast wave
- Terrestrial broadcast wave UHF band
- UHF band User area signal wave + 1st satellite broadcast wave
- V User area signal wave + 1st satellite broadcast wave
- UHF band Terrestrial broadcast wave + The area signal wave
- Figure 3 B is a terrestrial broadcast waves (UHF) 61, a user domain signal wave 62, the first satellite broadcast wave 63, and the relationship between the second satellite wave 6 4, FIG. 3 C, the terrestrial broadcasting wave
- UHF terrestrial broadcast waves
- UHF Ultra High Speed Downlink
- a user area signal wave 62 a user area signal wave 62
- a first satellite broadcast wave 63 a first satellite broadcast wave 63
- the user area 62 is arranged between the frequency band 61 of the terrestrial broadcast wave and the intermediate frequency band 63 of the satellite broadcast wave.
- FIG. 4A shows the relationship between the user area signal wave 62, the first satellite broadcast wave 63, and the second satellite broadcast waves 64, 65.
- FIG. 4B shows the user area signal wave 62
- the first FIG. 4C shows the relationship between the user area signal wave 62 and the first satellite broadcast wave 63.
- the relationship between the satellite broadcast wave 63 and the second satellite broadcast wave 64 is shown in FIG.
- the frequency arrangement used between the transmitter and the receiver should be the same as each other.
- the transmitter of the type (i) the receiver of either the type (ii) or (V) can be used. It is also possible to use u .
- the user area signal wave is easy to use and use if the models used are compatible.
- analog terrestrial broadcast waves depending on the receiving area, there may be cases where the video characteristics are poor, and in wireless transmission in the millimeter wave band, the quality of analog video deteriorates and the transmission distance increases. However, there is a possibility that it cannot be secured in + minutes. In such a case, the user area is used for transmission of analog terrestrial broadcast waves.
- the terrestrial analog video signal output from the TV or video is sent to the video / audio terminal of the transmitter (for example, terminal 20V 20L, 20R, terminal 21V in Fig. 1). , 21L 21R, terminals 22V, 22L, 22R, terminals 23V 23L, 23R). This enables analog terrestrial broadcast waves to be transmitted wirelessly up to four channels.
- the frequency is adjusted to the frequency range, which is the stage of the initial product.
- the transmitter and receiver are configured so that they are randomly allocated at certain frequency intervals, and for the receiving side, set the user channel for the user area signal when first used.
- the millimeter-wave transmitter] 5 is configured so that the user region can be shifted from 100 MHz to 100 MHz, and several types of frequencies in the user region are prepared in advance. Keep it. It is desirable that the millimeter wave receiver 29 be configured so that the frequency can be adjusted in consideration of the shift in the user area, and that the channel used can be initialized.
- the transmitting side makes the frequency variable so that the transmitting and receiving sides can adjust the frequency.
- the millimeter-wave transmitter 15 side and the millimeter-wave receiver 29 side also have a frequency conversion function, and adjust the frequency in the frequency domain so that no interference occurs between the transmission side and the reception side. It is desirable to have a function to set the channel to be used.
- the millimeter-wave down-converter 32 includes a low-noise amplifier 34, a filter 35, a frequency mixer 36, an amplifier 37, and a local oscillator 40.
- the received wave received by the antenna 31 is amplified by the low noise amplifier 34.
- the filter 35 allows only a desired signal wave among the output waves of the low noise amplifier 34 to pass.
- the output wave of the filter 35 is down-converted to an intermediate frequency band in the frequency mixer 36 based on the output (fL02) of the local oscillator 40.
- the multiplexed wave signal output from the frequency mixer 36 becomes a signal combiner on the transmitting side.
- the output signal of 9 becomes the same as the frequency component.
- the output of the frequency mixer 36 is amplified by the amplifier 37.
- the multiplexed signal wave output from the amplifier 37 is divided into three by the frequency divider 38 (referred to as a first signal wave, a second signal wave, and a third signal wave). 1st signal, 2nd signal wave, 3rd signal output from frequency divider 38 Each of the waves is filtered by filters 39a, 39b, 39c, which pass only the desired signal.
- the V broadcast waves (first signal wave and second signal wave) that have passed through the filters 39a and 39b are level-adjusted by the amplifiers 56a and 56b.
- the output terminal 43 receiving the output of the amplifier 56a outputs an intermediate frequency signal of a satellite broadcast wave.
- An output terminal 44 receiving the output of the amplifier 56b outputs a UHF terrestrial broadcast wave signal.
- the user area signal wave (third signal wave) that has passed through the filter 39c is down-converted by the frequency mixer 42 based on the output (fL03) of the IF band local oscillator 41, and is then subjected to four-minute filtering.
- the four signal waves output from the frequency mixer 42 are supplied to a first demodulation circuit 46, a second demodulation circuit 47, a third demodulation circuit 48, and a fourth demodulation circuit 49, respectively.
- the first demodulation circuit 46 demodulates one of the four signal waves output from the frequency mixer 42. As a result, the video signal 5 OV is output from the output terminal 50 V, and the audio signals 50 R and 50 L are output from the output terminals 50 R and 50 L, respectively.
- the second demodulation circuit 47 demodulates one of the four signal waves output from the frequency mixer 42. As a result, the video signal 51 V is output from the output terminal 51 V, and the audio signals 51 R and 51 L are output from the output terminals 51 R and 51 L, respectively.
- One of the four signal waves output from the frequency mixer 42 is demodulated by the third demodulation circuit 48.
- the video signal 52 V is output from the output terminal 52 V, and the audio signals 52 R and 52 L are output from the output terminals 52 R and 52 L, respectively.
- the fourth demodulation circuit 49 demodulates one of the four signal waves output from the frequency mixer 42.
- the video signal 53 V is output from the output terminal 53 V, and the audio signals 53 R, 53 L are output from the output terminals 53 R, 53 L, respectively.
- FIG. 5 An example of use of the first embodiment according to the millimeter wave transmitter 15 and the millimeter wave receiver 29, the D Figure 5 will be described with reference to FIG. 5, one of the millimeter wave transmitter 15 and one millimeter wave receiver An example is shown in which the transmitter 29a is arranged in a room A in the home and one millimeter wave receiver 29b is arranged in a room B different from the room A.
- the configuration of each of the millimeter-wave receivers 29 a and 29 b is the same as that of the millimeter-wave receiver 29.
- a mixed wave of the intermediate frequency signals of the first satellite broadcast wave and the second satellite broadcast wave is input from input terminal 6 and terrestrial digital broadcast wave (UHF) is input to millimeter wave transmitter 15 from input terminal 5 .
- UHF terrestrial digital broadcast wave
- the video and audio signals output from the second video device 81 are input to the millimeter wave transmitter 15 from the second input terminal 21.
- the video and audio signals output from the video camera 82 are input to the millimeter-wave transmitter 15 from the third input terminal 22.
- the video and audio signals that can be output from the DVD 83 are input to the millimeter-wave transmitter 15 from the fourth input terminal 23.
- the input terminal 20 is the terminals 20 L, 20 R, 20 V shown in FIG. 1
- the input terminal 21 is the terminals 21 L, 21 R, 21 V
- the input terminal 22 is the terminals 22 L, 22 R shown in FIG. , 22 V
- the input terminal 23 includes the terminals 23 L, 23 R, and 23 V shown in FIG. 1, respectively.
- the broadcast wave signal wave and the user region signal wave are multiplexed into an IF multiplexed signal wave, and then up-converted into a millimeter wave band signal and transmitted wirelessly.
- the wirelessly transmitted millimeter wave signal wave 90 is supplied to the millimeter wave receiver 29a in the room A and the millimeter wave receiver 29b in the room B, respectively.
- the intermediate frequency signal waves of the first and second satellite broadcast waves are output from the output terminal 44a of the millimeter wave receiver 29a, and transmitted to the first TV receiver 84a via the satellite broadcast tuner. Is entered.
- a terrestrial digital signal wave in the UHF band is output from the output terminal 43a of the millimeter wave receiver 29a, and is input to the first TV receiver 84a.
- the terrestrial analog broadcast wave transmitted as a user area signal is output from the video / audio terminal 50a of the millimeter-wave receiver 29a, and is input to the first V receiver 84a. It is.
- the video / audio signal of the second video device 81 transmitted as a user area signal / wave is output from the video / audio terminal 51a of the millimeter wave receiver 29a, and the video / audio terminal Is input to the bath controller 85 a having a child.
- Transmitted video force camera 82 of the video as a user domain signal wave 'audio signals, millimeter wave receiver 2 9 a video' are speech terminals 5 2 a mosquito ⁇ et output is a liquid crystal display 8 6 a input .
- the video and audio signals of DVD 83 transmitted as the user area signal wave are output from the video / audio terminal 53a of the millimeter wave receiver 29a, and the video
- the intermediate frequency signal waves of the first and second satellite broadcast waves are output from the output terminal 44b of the millimeter wave receiver 29b, and the second frequency signal is transmitted through the satellite broadcast tuner.
- the TV receiver 84b a digital signal wave is output from the output terminal 43b of the millimeter wave receiver 29b on the ground in the UHF band, and is input to the L-th TV receiver 84b.
- the terrestrial analog broadcast wave transmitted as the area signal wave is a millimeter wave receiver 2
- the video / audio terminal 50b of 9b is output from the terminal 50b and input to the second TV receiver 84b.
- the video / audio signal of the second video device 81 transmitted as the user area signal wave is output from the video / audio terminal 51 b of the millimeter wave receiver 29 b, and a personal computer having a video / audio terminal. Entered in 8 5 b.
- the video / audio signal of the video camera 82 transmitted as the user area signal wave is output from the video / audio terminal 52 b of the millimeter wave receiver 29 b and input to the liquid crystal display 86 b.
- the video / audio signal of DVD 83 transmitted as the user area signal wave is output from the video / audio terminal 53 b of the millimeter-wave receiver 29 b, and the video camera
- terminals 43a and 43b correspond to the terminal 43 in FIG. 2, and the terminals 44a and 44b correspond to the terminal 44 in FIG.
- Terminals 50a, 50b are the terminals 5 ⁇ V, 50L, 5OR in FIG. 2 and terminals 5la, 51b are the terminals 5IV, 51L, 5113 ⁇ 4 in FIG.
- Terminals 52 and 52b are terminals 52V, 52L and 52R in FIG. 2
- terminals 53a and 53b are terminals 53 and 53 in FIG.
- Millimeter-wave transmitted broadcast waves (UHF terrestrial digital broadcast wave, first satellite broadcast wave, second satellite broadcast wave) are transmitted to the first TV receiver 84a and the second TV receiver 84b. Are tuned in.
- the signal wave (electronic device signal) transmitted using the user area is transmitted to the corresponding device for reproduction (device 85a, 86a or 87a in room A, and device B in room B). Threaded to device 85b, 86b or 87b).
- a broadcast wave and a signal wave from an electronic device other than the broadcast wave can be simultaneously and independently wirelessly connected.
- TV broadcast waves and video / video / audio signals can support multiple channels.
- the wireless communication device according to the second embodiment has the above-described millimeter-wave transmitter 15 and millimeter-wave receiver 29 as basic configurations.
- FIG. 6 An example of use of the wireless communication device according to the second embodiment will be described with reference to FIG.
- Fig. 6 one millimeter-wave transmitter 15 and one millimeter-wave receiver 29a are placed in room A in the home, and one millimeter-wave receiver 29b is placed in room B, which is different from room A.
- An example of arrangement is shown.
- a digital video recorder 91 that outputs a video component signal is used instead of the second video device 81, the video camera 82, and the DVD 83.
- a video component signal is transmitted using three terminals 21, 22, 23 of four terminals receiving a user area signal wave.
- the video component signal is composed of a luminance signal Y and color difference signals: Pb (Cb) and Pr (Cr).
- the luminance signal Y and the color difference signals Pb and Pr are converted into second to fourth modulation circuits 1 2 2 included in the millimeter wave transmitter 15 via terminals (modulators) 21, 22 and 23. , 1 2 3, 1
- the modulated signal is combined by the signal combiner 8, and the broadcast wave received at the terminals 5 and 6 and the modulated signal wave are combined by the signal combiner 9.
- the millimeter-wave up-converter 4 up-converts the IF multiplex to a millimeter-wave band. Then, millimeter wave wireless transmission is performed.
- the audio stereo signals (R, L) for the video component signals are 3 Terminals 21 L, 21R, 22L, 22R, 23L, 23R Any audio terminal may be input. Desirably, the signal is input to the audio terminals 23R and 23L included in the terminal 23 corresponding to the color difference signal Pr having a narrow transmission band.
- the wirelessly transmitted millimeter-wave signal wave 9 ⁇ is supplied to the millimeter-wave receiver 29a in the room A and the millimeter-wave receiver 29b in the room B, and is down-converted.
- the signal is separated into a user area signal wave and a broadcast wave at the intermediate frequency stage. Further, the user area signal wave is down-converted, and then independently demodulated in the Lth to fourth demodulation circuits 46 to 49.
- the demodulated terrestrial analog broadcast wave is output from terminals 50a and 50b as in the first embodiment.
- the demodulated signal Y is output from terminals 51a and 51b
- the demodulated signal Pb (Cb) is output from terminals 52a and 52b
- the demodulated signal Pr (Cr) is output from terminals 53a and 52b.
- the audio signals are output from terminals 53R and 53L, respectively.
- the outputs of the terminals 43a and 50a of the millimeter-wave receiver 29a and the outputs of the terminal 44a of the millimeter-wave receiver 29a. are connected to the high-definition TV receiver 184a. Is entered.
- the outputs of the terminals 43 b and 50 b of the millimeter wave receiver 29 b and the output of the terminal 44 b of the millimeter wave receiver 29 b are input to the high-definition TV receiver 184 b.
- the outputs of the terminals 51 a, 52 a, and 53 a of the millimeter-wave receiver 29 a are supplied to, for example, a liquid crystal display 92 a having a D terminal, and the terminals 51 b, 52 b, and 52 b of the millimeter-wave receiver 29 b are provided.
- the output of 53b is supplied to, for example, a DVD 93 having a D terminal.
- NTSG National Television System
- the millimeter-wave transmitter 15 and the digital video recorder 91 are connected by a cable for a video component.
- the millimeter-wave transmitter 15 converts the video component signal to the D terminal side (the video component signals of 21 V, 22 V, and 23 V). Formed by connecting the D terminal to the D terminal). In this case, it becomes possible to connect the digital video recorder and the millimeter-wave transmitter with the D terminal cable.
- connection between the millimeter-wave receivers 29a and 29b and the high-definition TV can also be established by installing a converter from the video component signal to the D-terminal 55 in the millimeter-wave receiver. It will be possible to connect.
- terrestrial digital broadcast waves and first and second satellite broadcast waves were used as TV broadcast waves, but cable television (CATV: cable television / community antenna television) was used. Ig No. wave (CATV wave is also available.
- a frequency converter that once converts the frequency in the 1 GHz to 2 GHz Z band is installed in the millimeter wave transmitter 15, and as shown in Fig. 7, the high frequency side of the down link signal section 73 of the CATV waves In 74, signal waves (USER) in the user area are arranged, and the uplink signal section 72 for CA TV waves is arranged on the lower frequency side of the downlink signal section 73. Then, the signals arranged in this way are configured to convert the (IF signal) into millimeter waves.
- USR signal waves
- the millimeter-wave transmitter 15G shown in FIG. 8 includes a TF multiplexing circuit 1C, a millimeter-wave upconverter 4, and a millimeter-wave antenna 3.
- the multiplexing circuit 1C includes a frequency converter 200 instead of the amplifiers 2a and 2b.
- Frequency converter 200 includes amplifier 2, frequency mixer 201 and local oscillator 202.
- the CATV wave signal received at terminal 6 is amplified by amplifier 2.
- the frequency of the output of the amplifier 2 is converted by the frequency mixer 201 so as to satisfy the relationship shown in FIG.
- the output of the frequency converter 200, the output of the signal synthesizer 8 and the force signal combiner 9 are combined.
- the millimeter-wave receiver 29 C shown in Fig. 9 has an antenna 31 and a millimeter-wave downconverter 3
- Output processing circuit 45 C is c the frequency converter 210 comprises a frequency converter 210 in place of the filter 39 a, 39 b and ⁇ device 56 a, 56 b are filter 39, a frequency mixer 2 1 1, a local oscillator 21 2 and amplifier 56 included.
- User signal wave distributed by frequency divider 38 Is demodulated by the first to fourth demodulation circuits as described above.
- Other CATV waves pass through the high-pass filter 39. Then, based on the output of the local oscillator 211, the frequency is converted by the frequency mixer 211.
- the output of the frequency mixer 211 is amplified by an amplifier 56 and then output to a terminal 43.
- a TV broadcast wave and the video / audio signal from electronic devices can be wirelessly connected simultaneously and independently in a house. Therefore, the electronic device can be carried between rooms, and a plurality of electronic devices can be used in different places at the same time. Furthermore, since TV broadcast waves and video / audio signals can support multiple channels, multiple electronic devices can have different video / audio information.
- the intermediate frequency band for satellite broadcasting and the frequency ⁇ for terrestrial broadcasting are frequency-multiplexed with the frequency band in the user region. For this reason, it is not necessary to use a frequency converter in the mouthband of the microphone in the 6 GHz band or 150 GHz band as in the past. As a result, the frequency stability is excellent and the need for doubling is eliminated. As a result, not only can good frequency stability be obtained, but also frequency multiplexing of satellite broadcasting, terrestrial broadcasting, and CATV broadcasting becomes possible. Then, after frequency multiplexing in the IF frequency band, the frequency is up-converted to a millimeter wave band, and wireless communication can be performed. Industrial applicability
- a plurality of different signal waves can be transmitted and received stably, so that TV broadcast waves and video TV cameras and personal computers can be used indoors and at home.
- Video and audio signals from such electronic devices can be wirelessly connected simultaneously and independently. Therefore, the electronic device can be carried between rooms, and a plurality of electronic devices can be used in different places at the same time.
- TV broadcast waves and video / video / ⁇ -voice signals can support multiple channels, so that multiple electronic devices can have different video / audio information.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01976710A EP1330059B1 (en) | 2000-10-18 | 2001-10-17 | Radio communication apparatus, transmitter apparatus and receiver apparatus |
US10/399,566 US7697574B2 (en) | 2000-10-18 | 2001-10-17 | Radio communication apparatus, transmitter apparatus and receiver apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-317988 | 2000-10-18 | ||
JP2000317988A JP2002125206A (ja) | 2000-10-18 | 2000-10-18 | 無線通信装置,送信装置および受信装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002033862A1 true WO2002033862A1 (fr) | 2002-04-25 |
Family
ID=18796686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/009105 WO2002033862A1 (fr) | 2000-10-18 | 2001-10-17 | Dispositif de radiocommunication, dispositif d'emission et dispositif de reception |
Country Status (4)
Country | Link |
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US (1) | US7697574B2 (ja) |
EP (1) | EP1330059B1 (ja) |
JP (1) | JP2002125206A (ja) |
WO (1) | WO2002033862A1 (ja) |
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Also Published As
Publication number | Publication date |
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JP2002125206A (ja) | 2002-04-26 |
US7697574B2 (en) | 2010-04-13 |
EP1330059A4 (en) | 2009-07-29 |
US20040015990A1 (en) | 2004-01-22 |
EP1330059B1 (en) | 2011-08-24 |
EP1330059A1 (en) | 2003-07-23 |
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