WO2006046635A1 - 車載情報機器の情報共有システム - Google Patents
車載情報機器の情報共有システム Download PDFInfo
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- WO2006046635A1 WO2006046635A1 PCT/JP2005/019764 JP2005019764W WO2006046635A1 WO 2006046635 A1 WO2006046635 A1 WO 2006046635A1 JP 2005019764 W JP2005019764 W JP 2005019764W WO 2006046635 A1 WO2006046635 A1 WO 2006046635A1
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- WIPO (PCT)
- Prior art keywords
- information
- unit
- vehicle
- slave unit
- data
- Prior art date
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
- G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
- G08G1/096741—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
Definitions
- the present invention relates to an information sharing system for in-vehicle information equipment such as car navigation, and in particular,
- the present invention relates to an information sharing system that can use information obtained by car navigation outside the vehicle.
- LAN Local Area Network
- This CAN protocol is a serial bus system, was developed in the early 1980s as an application related to automobiles, was developed as an international standard as IS011898-1 in 1993, and has a maximum communication speed of 1Mbps.
- IDB-C ITS Data Bus on CAN
- TDMA Time Divisional Multiple Access
- a general keyless entry system realizes on / off of a vehicle door lock by remote control.
- the keyless entry system uses ASK (Amplitude Shift Keying) or FSK (Frequency Shift Keying) as the communication method, and the communication distance is generally about 20m. It was communication.
- ASK Amplitude Shift Keying
- FSK Frequency Shift Keying
- F using a SAW (Surface Acoustic Wave) filter with a wide bandwidth characteristic of several hundred kHz to several MHz, it is not possible to communicate over long distances of 20 m or more. ! / Become ugly!
- Patent Document 1 a signal indicating the operating state is transmitted from the LED from the in-vehicle device, and the portable device receives the signal at the light receiving unit, and the LCD for display Alternatively, a keyless entry system that outputs a notification to an LED is described (Patent Document 1).
- Patent Document 2 uses a mobile phone, a PDA, or an electronic key of a keyless entry system for transmission / reception between a car navigation device and a personal computer. If the information obtained with the case device is displayed! /, It is not a thing! / (Patent Document 2).
- JP 2000-1452A published on May 26, 2000.
- the in-vehicle device can communicate with the car navigation unit, but the portable device that communicates wirelessly with the in-vehicle device is not supposed to display information on the car navigation unit that has a display unit! (Patent Document 3).
- This prior art includes a portable transmitter and a receiver connected to car navigation or car audio, and displays a state driven by a signal from the transmitter on a display unit such as car navigation.
- a display unit such as car navigation.
- Patent Document 4 if a transmitter is provided with a display unit and car navigation information is displayed on the display unit.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-115679
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 2004-108016
- Patent Document 3 Japanese Unexamined Patent Publication No. 2000-145224
- Patent Document 4 Japanese Unexamined Patent Publication No. 2000-213215
- the approximate location of the museum can be found in the Power Navigation System.
- Detailed information on the Power Museum can be found in the car navigation system.
- it is possible to obtain information by using a mobile phone or the like it is possible to obtain detailed information by using a mobile phone to get off the car.
- the present invention has been made in view of the above circumstances, and by using a keyless entry system, information obtained by a powerful navigation system can be referred to by a portable handset, which is convenient for the user.
- An object of the present invention is to provide an information sharing system capable of improving the performance. Means for solving the problem
- the present invention for solving the problems of the above conventional example includes information using a keyless entry system that includes a portable child device and an in-vehicle parent device and connects both devices by wireless communication. It is a shared system that has in-vehicle information devices that store information and acquire information.
- the parent device also receives information related to a specific area and stores the information. Stored in the storage unit, and the information stored in the storage unit is transmitted to download to the slave unit.
- the slave unit receives the transmitted information from the master unit, stores it in the storage unit, downloads it, and is downloaded. Information can be provided to the notification means.
- the present invention provides the information sharing system as described above, wherein the information device has a function of detecting the position of the vehicle, detects the position where the vehicle stops, and provides information on the area where the stop position force is within a specific range. It is.
- the parent device detects the stop of the vehicle, requests the information device to provide information regarding the area within the vehicle stop position force specific range, and the information device Information is provided based on the demands of mobility.
- the parent device downloads a part of the information stored in the storage unit to the child device, and sends a transmission request for information whose child device power is not downloaded.
- the information is transmitted to the child device, the child device requests the parent device to transmit information that has not been downloaded, the parent device power is received, stored in the storage unit, Information can be provided to the notification means.
- a part of the information downloaded to the slave unit is search data in the slave unit.
- the present invention uses a narrow-band crystal filter as a radio antenna filter in the slave unit and the master unit, uses a spread spectrum system as a communication system, and uses high-frequency weak radio waves. Two-way communication between the machine and the parent machine. The invention's effect
- an information sharing system using a keyless entry system that includes a portable child device and an in-vehicle parent device and connects both devices by wireless communication. It has an in-vehicle information device that remembers and obtains information, and the parent device receives information on a specific area from the information device, stores the information in the storage unit, and stores the information stored in the storage unit as a child.
- the slave unit receives the information transmitted from the master unit, stores it in the storage unit, downloads it, and provides the downloaded information to the notification means.
- the information stored or acquired by the information device can be used by a portable device that can be carried and the convenience of the user can be improved.
- the information sharing system includes an information device that has a function of detecting a position of the vehicle, detects a position where the vehicle has stopped, and provides information about an area within a specific range from the stop position. Therefore, there is an effect that information related to the stop position of the vehicle can be easily used by the slave unit and the convenience of the user can be improved.
- the parent device detects the stop of the vehicle, requests the information device to provide information regarding the area within the specific range such as the vehicle stop position force, and the information device receives the information from the parent device. Therefore, when the vehicle stop is detected, the information related to the stop position force of the vehicle can be easily used by the slave unit. There is an effect that convenience can be improved.
- the base unit downloads part of the information stored in the storage unit to the slave unit and receives a transmission request for information that has not been downloaded to the slave unit
- the information is transmitted to the slave unit
- the slave unit requests the master unit to transmit undownloaded information
- the master unit receives the transmitted information, stores it in the storage unit, and provides the information to the notification means Since this is an information sharing system that can be used, the amount of communication from the parent device to the child device can be reduced, the storage capacity of the child device can be reduced, the communication efficiency can be improved, and the system cost can be reduced. There is an effect that can.
- part of the information downloaded to the slave unit is the above-mentioned information sharing system, which is the search data in the slave unit! /, So the slave unit can easily search for information. If the search result is sent to the base unit, the communication efficiency can be further improved.
- a narrowband crystal filter is used as the antenna filter of the radio in the slave unit and the master unit, and the communication method is a spread spectrum method. Since the above information sharing system uses two-way communication between the two, a narrow-band crystal filter improves the reception sensitivity and enables a longer communication distance than before. By using the spread spectrum method, there is an effect that a practical system can be realized.
- FIG. 1 is a schematic configuration diagram of an information sharing system according to an embodiment of the present invention.
- FIG. 2 is a configuration block diagram of the master unit of this system.
- FIG. 3 is a configuration block diagram of a slave unit of this system.
- FIG. 4 is a configuration block diagram of a radio unit 1.
- FIG. 5 is a configuration block diagram of a signal processing unit 2.
- FIG. 6 is a configuration block diagram showing an embodiment of the in-vehicle device of this system.
- FIG. 7 is a schematic diagram showing a display example in the slave unit of the present system.
- Oscillator 19 ⁇ Receiver mixer, 20 ⁇ Low pass filter (LPF), 21 "'Variable gain amplifier (800, 22 ⁇ Low pass filter (LPF), 23 ⁇ Transmission mixer, 31 ⁇ Analog Z digital converter (AZD), 32 ... Carrier demodulation circuit, 33 ... AGC control circuit, 34 ... Carrier data generation circuit, 35 ... Spread code generation circuit, 36 ... despreading circuit, 37 ... .... Synchronous circuit, 38 BPSK demodulation times , 39 ⁇ Data reception circuit, 40... Data generation circuit, 41 ⁇ Spreading circuit, 42—BPSK modulation circuit, 43 ⁇ Waveform shaping circuit, 44 ⁇ Carrier modulation circuit, 45 ⁇ Digital Z analog transformation (DZA) Best mode for carrying out the invention
- DZA Digital Z analog transformation
- An information sharing system includes a slave unit and a master unit of a keyless entry system, and among the information stored or acquired by the car navigation system, the position force at which the vehicle is stopped is in a specific range.
- Information related to the area is stored in the memory of the main unit, and the stored information is transmitted to the sub unit using the weak radio and stored in the memory of the sub unit so that it can be displayed. Even if the person carries the slave unit and leaves the vehicle, the information obtained by the car navigation system can be displayed on the display unit of the slave unit.
- the information sharing system uses SS (Spectra) as the communication method.
- SS Spread Spectrum
- two-way communication between the slave unit and the master unit is realized using weak radio waves, and part of the information acquired by the car navigation system in the slave unit memory, for example,
- the notification means display unit
- the information is transmitted from the slave unit to the master unit.
- a transmission request is made, the memory is searched in the parent device, and the requested information is transmitted to the child device.
- the child device displays the information requested for transmission on its display unit, and all the memory in the child device memory is displayed. Even if no information is stored, it is possible to efficiently receive information on the base unit as needed.
- the communication device of the slave unit and the master unit in the information sharing system uses a quartz filter with a narrow band of several tens of kHz to limit the band of the received signal, thereby improving the reception sensitivity.
- the communication distance can be increased to a maximum of 150m for weak radio wave devices in Japan, and the communication method is also less susceptible to interference due to the increased communication distance compared to the conventional method.
- High interference resistance such as ASK or FSK method
- the SS method is used to realize bi-directional communication over a longer communication distance.
- FIG. 1 is a schematic configuration diagram of an information sharing system according to an embodiment of the present invention.
- an information sharing system (this system) according to an embodiment of the present invention basically includes a slave unit 1 (a master unit 10 and a car navigation system 6) of a keyless entry system. is doing.
- Slave unit 10 'and base unit 10 are associated with each other, and the weak radio SS method is used for bidirectional communication, achieving a maximum communication distance of about 150m.
- Slave unit 10 downloads part or all of the data stored in the memory of master unit 10 to its own memory, displays the downloaded data on the display unit, searches for information, and downloads it. If the data is part of the data and there is a need for data that has not been downloaded, a data transmission request is transmitted to the base unit 10, and the received data is stored in the memory and stored in the display unit. It is what is displayed.
- the master unit 10 also acquires information on the car navigation system power, stores the acquired information in the memory, and further downloads part or all of the information to the slave unit 10 '. In response to a data transmission request from ', the corresponding data is retrieved and transmitted to the slave unit 1 (/.
- the main unit 10 is turned on even if the engine is stopped and the ignition key is removed.
- base unit 10 The specific configuration of base unit 10 will be described later.
- the car navigation system 6 has a GPS (Global Positioning System) function, detects the position of the vehicle, displays it on a map, and connects to a network such as the Internet to obtain information on facilities and buildings.
- GPS Global Positioning System
- information about facilities in a specific area centered on the current position of the vehicle for example, a radius of 3km from the center
- the car navigation system 6 turns off when the engine is stopped and the ignition key is removed.
- FIG. Fig. 2 is a block diagram of the main unit of this system.
- Base unit 10 includes a wireless unit 1 that performs transmission / reception, a signal processing unit 2 that performs signal processing for transmission / reception, an antenna unit 3, a control unit 4 that performs overall control, and a memory 5 that stores information.
- the control unit 4 of the base unit 10 is connected to the car navigation system 6.
- the radio unit 1 amplifies the signal received from the antenna unit 3, limits the band, down-converts the signal to an IF (Intermediate Frequency) frequency band, and further amplifies it to an input level to the signal processing unit 2.
- IF Intermediate Frequency
- the radio unit 1 converts the signal input from the signal processing unit 2 into an RF (Radio Frequency: Radio Frequency) frequency band, limits the band, and amplifies the high frequency within the electric field strength level of the weak radio station. .
- RF Radio Frequency: Radio Frequency
- the signal processing unit 2 performs carrier demodulation on the signal input from the radio unit 1, demodulates a signal that is despread and synchronized, decodes received data, and outputs the decoded data to the control unit 4.
- the signal processing unit 2 performs spread modulation on the data input from the control unit 4, performs waveform shaping and carrier modulation, and outputs the result to the radio unit 1.
- the control unit 4 acquires an ID from the received data decoded by the signal processing unit 2, determines whether or not the acquired ID (ID from the other party) matches its own ID, and if they match To receive data.
- data input from the connected car navigation system 6 is stored in the memory 5, and data in the memory 5 is output to the signal processing unit 2.
- control unit 4 requests the car navigation system 6 to provide information in a specific range, and stores it in the memory 5 so as to be searchable upon receiving data input.
- control unit 4 outputs the data stored in the memory 5 to the signal processing unit 2 to download a part or all of the data stored in the memory 5 toward the child device 10 ′, and executes data transmission.
- control unit 4 When the control unit 4 receives a request for transmission of specific data of the slave unit 10 ', the control unit 4 searches the memory 5 for the data and outputs the corresponding data to the signal processing unit 2 to transmit to the slave unit 10'. Execute.
- control unit 4 since the control unit 4 executes the above processing, the control unit 4 includes a CPU (Central Processing Unit) and performs processing by executing a program.
- CPU Central Processing Unit
- the memory 5 stores information in a specific range provided from the car navigation system 6 so as to be searchable, performs data search by access from the control unit 4, and outputs necessary data.
- the classification for each category is determined in advance, and the control unit 4 determines the category for information input from the car navigation system 6 and stores it according to the classification. If an index corresponding to the classification is created and information is searched using the index, the search becomes easy. Even when searching using this index, convenience is further improved if keyword searching is possible.
- the search index is the first data downloaded to handset 1 ( Just the status data is fine.
- FIG. Fig. 3 is a block diagram of the configuration of the slave unit of this system.
- the slave unit 10 ′ includes a radio unit 1 ′ that performs transmission and reception, a signal processing unit 2 ′ that performs signal processing for transmission and reception, an antenna unit, a control unit that performs overall control, a memory that stores information, A notification unit 7 serving as a display unit for displaying information and a transmission unit 8 serving as an input unit for inputting instructions and the like are provided.
- the configurations and operations of the radio unit, the signal processing unit ⁇ , and the antenna unit are the same as those of the radio unit 1, the signal processing unit 2, and the antenna unit 3 of the base unit 10.
- the control unit ⁇ stores the downloaded data received and input from the base unit 10 in the memory 5 ′ and displays and outputs the data on the notification means 7.
- control unit ⁇ performs a data search for the memory 5 ′ according to an instruction from the transmission unit 8, and displays and outputs the search result to the notification unit 7.
- control unit 4 ′ outputs a signal for requesting data transmission to the base unit 10 to the signal processing unit ⁇ in accordance with an instruction from the transmission unit 8 to perform transmission.
- control unit ⁇ since the control unit ⁇ performs the above processing, it has a CPU (Central Processing Unit) and performs processing by executing a program.
- CPU Central Processing Unit
- the memory stores the data downloaded from the parent device 10 so that it can be searched.
- the downloaded data is a part or all of the data stored in the memory 5 of the base unit 10. When storing all the data, it is not necessary to send a data transmission request to the base unit 10. In addition, if the data is the above-mentioned index data, the data is used for searching and the purpose (search result) When the data is specified, the data transmission request is transmitted to the base unit 10, the target data is received from the base unit 10, stored in the memory 5 ′, and displayed on the notification means 7.
- the notification means 7 displays the data output from the control unit 4 '.
- the notification means 7 may be a voice output unit that outputs data by voice instead of the display unit! /.
- the transmission means 8 is an input unit for inputting an instruction to the control unit 4 ′, for example, a button or an arrow Key etc.
- the master unit 10 operates with a car battery and its control unit 4 is connected to the interface of the car navigation system 6, and the slave unit 1 (operates with a battery and its control unit ⁇ Are different in that they are connected to user interfaces such as notification means (display section) and transmission means (input section).
- FIG. 4 is a configuration block diagram of the radio unit 1.
- the radio unit 1 includes a bandpass filter (BPF) 11, a power amplifier (PA) 12, a low noise amplifier (LNA) 13, a switch (SW) 14, and a switch.
- BPF bandpass filter
- PA power amplifier
- LNA low noise amplifier
- SW switch
- BPF16 uses a crystal filter (315MHz ⁇ 20kHz) that filters the carrier band signal of frequency higher than VHF band received by antenna unit 3,
- OSC18 is a crystal resonator (315MHz-48kHz)
- a high-frequency local oscillator with a temperature characteristic and an aging characteristic are installed in a region where the operating environment is substantially the same.
- the same operating environment means, for example, that a crystal filter and a crystal resonator are packaged in one module container having a material strength that makes each temperature characteristic substantially the same.
- a crystal filter as an antenna filter can achieve a very narrow band limitation compared to a conventional SAW filter, and the bandwidth through which a carrier band signal passes is about several tens of kHz, The bandwidth is much narrower than that of SAW filters.
- crystal filters are used in radio equipment with a relatively short frequency up to the short wave band, but there is a certain upper limit on the feasible range of crystal filters, so VHF bands such as keyless entry systems are used. (30 ⁇ 300MHz) or UHF band (300MHz ⁇ 3GHz) frequency was not considered. For this reason, SAW filters developed for high-frequency bands were used in keyless entry systems, but wideband SAW filters were not able to increase reception sensitivity. .
- the frequency range in which the crystal filters can be used is in the direction of being expanded.
- the crystal filter can be applied to the antenna filter even at high frequencies above the VHF band.
- the quartz filter has, for example, an AT-cut quartz piece!
- the AT cut is parallel to the X-axis of the crystal and cut at around 35 degrees 15 minutes from the Z-axis.
- the frequency-temperature characteristic shows very good characteristics of the cubic curve over a wide temperature range.
- crystal filter for example, a third-order overtone, 100 to 130 MHz, preferably 105 MHz is used at 315 MHz.
- the bandwidth of the 3dB attenuation band of the crystal filter is about several tens of kHz, which is much narrower than that of the SAW filter, and reception sensitivity can be drastically improved.
- the degree can be realized.
- the signal input from the antenna unit 3 is input to the radio unit 1, passes through the BPF 11, is band-limited, is switched to the receiving side by SW14, is amplified by the LNA 13, and is output to BPF 16 by SW15.
- the signal is band-limited by BPF 16, switched to the receiving side by SW17, synthesized by the reception mixer 19 using the oscillation frequency from OSC 18, and down-compressed to the IF frequency band.
- the IF spurious signal is removed from the signal with IF frequency by LPF20. After that, the signal is amplified by the AGC 21 to a certain input level appropriate for the analog Z-digital converter (AZD) 31 of the signal processing unit 2.
- AGC 21 Analog Z-digital converter
- the IF signal output from the signal processing unit 2 is subjected to harmonic removal by the LPF 22, mixed by the transmission mixer 23 at the oscillation frequency from the OSC 18, and converted to the RF frequency band.
- the RF frequency signal is output to BPF16 by SW17, the band is limited by BPF16, SW15 is switched to the transmission side, and PA12 is amplified at high frequency within the field strength level of the weak radio station.
- the final band radiated into the space is restricted by BPF11 via SW14, and the antenna unit 3 transmits the antenna.
- FIG. 5 is a configuration block diagram of the signal processing unit 2.
- the configuration of the signal processing unit ⁇ is the same.
- the signal processing unit 2 includes an analog Z-digital converter (AZD) 31, a carrier demodulation circuit 32, an AGC control circuit 33, a carrier data generation circuit 34, and a spread code generation circuit 35.
- AGC Analog Z-digital converter
- a carrier demodulation circuit 32 a carrier demodulation circuit 32
- AGC control circuit 33 a carrier data generation circuit 34
- a spread code generation circuit 35 a spread code generation circuit 35.
- Despreading circuit 36, synchronizing circuit 37, BPSK (Binary Phase Shift Keying) demodulation circuit 38, data receiving circuit 39, data generating circuit 40, spreading circuit 41, BPSK modulation circuit 42, waveform shaping circuit 43, carrier modulation circuit 44, and digital / analog conversion (D / A) 45 are basically provided.
- the following signal processor 2 is assumed to be the master unit.
- the signal input from the wireless unit 1 is demodulated using the carrier data output from the carrier data generation circuit 34 by the carrier demodulation circuit 32 after being converted into a digital value by the analog Z-digital converter (AZD) 31, and the I component And Q component complex data.
- AZA analog Z-digital converter
- the AGC control circuit 33 controls the gain of the AGC 21. Specifically, for the I and Q components output from the carrier demodulation circuit 32, the square of the I component and the square of the Q component are calculated. A control signal is output to AGC21 so that it becomes constant using the square root of the sum.
- the despreading circuit 36 performs despreading processing on the received complex data using the spread code generated from the spread code generation circuit 35, respectively.
- the code used for despreading is performed using the spreading code used for transmission on the other side (slave unit).
- the synchronization circuit 37 performs correlation detection using a matched filter, and receives a signal in synchronization with the slave station (slave device) side, with the timing when a peak equal to or greater than a predetermined threshold is detected as a synchronization timing. Is called.
- the synchronized signal is BPSK demodulated by the BPSK demodulator 38, decoded to the original data, and output to the data receiver 39.
- the data receiving circuit 39 outputs the decrypted data to the control unit 4.
- the synchronization circuit 37 sends the reception synchronization timing and transmission to all the circuits in the radio unit 1 and the signal processing unit 2 based on the synchronization timing. Outputs credit synchronization timing.
- Data for transmission from the control unit 4 is input to the data generation circuit 40, and the data generation circuit 40 outputs the data for transmission to the spreading circuit 41.
- the spreading circuit 41 performs spreading modulation using a predetermined spreading code output from the spreading code generation circuit 35 and spreads the signals into 1 and 0 signals. This is BPSK modulated by the BPSK modulation circuit 42, converted into a level of 1 or 1, and shaped by a digital filter in the waveform shaping circuit 43.
- the transmission data subjected to waveform shaping is multiplied by transmission carrier data that is an IF frequency output from the carrier data generation circuit 34 by the carrier modulation circuit 44.
- This digital value is converted to an analog value by DZA45 and the IF signal in the radio frequency band is output to LPF22 of radio section 1.
- Each unit of the radio unit 1 and the signal processing unit 2 of the high-frequency radio in this system is configured by an integrated IC chip, and is housed in a module container together with a crystal filter so as to be integrated. Therefore, the size can be reduced.
- the quartz filter is much smaller and lighter than the SAW filter, so it is suitable for miniaturization, and it is possible to reduce the size of the handset in this system.
- FIG. 6 is a configuration block diagram showing an embodiment of the in-vehicle device of this system.
- the in-vehicle device of this system is connected to each other via an in-vehicle LAN network, and each device is connected via an electronic control unit (ECU) and an interface unit (iZ F unit). Connect to the LAN network.
- ECU electronice control unit
- iZ F unit interface unit
- ECU1 is connected to devices such as a door lock, lighting, and a power window
- ECU2 is connected to devices such as a collision sensor and ABS (Antilock Brake System)
- ECU3 is an engine, a transmission, and the like Connected to other devices.
- a sensor is provided for each device, and the status of each device is output to the parent device 10 via the LAN network in response to a request from the child device 1 (/ power) and transmitted to the child device 10 ′.
- the door lock, lighting, power window, etc., as well as the engine can be operated by handset 1 (powerful remote control).
- the car navigation system 6 is connected to the ECU 0 via the I / F unit, and the master unit 10 is also connected to the in-vehicle LAN network by the in-vehicle LAN IZF unit 9! /
- the car navigation system 6 is capable of storing information on a hard disk or a DVD, and acquiring and storing the latest information via the Internet.
- the control unit 4 of the base unit 10 detects information on a specific range, for example, a facility within a radius of 3 km from the current position of the vehicle 'building information, within that range. Requests information on the event to be held, etc., and stores the data input from the car navigation system 6 in the memory 5 of the base unit 10. Part or all of the data stored in the memory 5 is transmitted to the slave unit 10 'and downloaded.
- FIG. 7 is a schematic diagram showing a display example in the slave unit of this system.
- the process of storing information in the memory 5 of the parent device 10 will be described. For information storage processing! Various methods can be considered. First, if the user requests the base unit 10 to acquire information on the slave unit 1 (/ power), the control unit 4 of the base unit 10 informs the car navigation system 6 about the specific region. The car navigation system 6 acquires related information and outputs it to the base unit 10. The control unit 4 of the base unit 10 stores the input information in the memory 5. .
- the control unit 4 of the base unit 10 detects the state, and sends information in a specific range with respect to the current position to the car navigation system 6. Output the request. Then, the car navigation system 6 acquires information related to the current position and outputs it to the base unit 10. The control unit 4 of the base unit 10 stores the input information in the memory 5.
- the car navigation system 6 voluntarily acquires information on a specific range with respect to the current position and outputs it to the base unit 10. To do.
- the control unit 4 of the base unit 10 stores the input information in the memory 5.
- the specific range information is set in advance from the current position, for example, a radius of 3 km.
- control unit 4 and the car navigation system 6 of the base unit 10 can operate a program for executing the processes.
- control unit 4 of the base unit 10 After storing information in the memory 5, the control unit 4 of the base unit 10 transmits part or all of the stored data via the signal processing unit 2, the radio unit 1, and the antenna unit 3 to the slave unit 10 '. Send to and download.
- the control unit ⁇ of the slave unit 1 (receives and inputs data from the master unit 10 via the antenna unit, the radio unit! /, And the signal processing unit ⁇ and stores it in the memory 5 ′.
- control unit ⁇ searches the data stored in the memory 5 ′ according to an instruction from the transmission unit 8 and outputs the data to the notification unit 7.
- FIG. 7 shows an example in which a map and the contents of the event are displayed on the child device 10 ′ (referred to as “key card” in the figure) as, for example, museum information.
- the display unit corresponds to the notification means 7 and the two buttons and the up / down / left / right arrow keys correspond to the transmission means 8.
- the data power downloaded to the memory 5 'of the slave unit 1 is a part of the data stored in the memory 5 of the master unit 10
- the data transmission request processing from the slave unit 1 I will explain.
- the transmission means 8 issues an instruction to acquire the target data.
- the control unit 4 ′ transmits the data transmission request to the base unit 10 via the signal processing unit 2 ′, the radio unit, and the antenna unit 3.
- the control unit 4 of the base unit 10 inputs a data transmission request from the slave unit 10 'received via the antenna unit 3, the radio unit 1, and the signal processing unit 2, and searches the memory 5 for target data.
- the transmitted data is transmitted to the slave unit 10 ′ via the signal processing unit 2, the radio unit 1, and the antenna unit 3.
- the control unit ⁇ of the slave unit 1 (inputs the data from the base unit 10 received via the antenna unit, the radio unit! /, And the signal processing unit ⁇ , stores the data in the memory 5 ', and corresponds to the notification means 7 Display and output data.
- the maximum communication distance between the slave unit 10 'and the master unit 10 is 150m, it is possible to transmit and receive data between the powerful slave unit 10' and the master unit 10 more realistically after leaving the vehicle. It is a thing.
- the information acquired by the in-vehicle information device such as the car navigation system 6 can be browsed by the notification means 7 of the slave unit 10 ', so that the information can be referred to even outside the vehicle. There is an effect that the convenience of the user can be improved.
- slave unit 1 (/ and master unit 10 can be used as a keyless entry system.
- the slave unit 10 ' can be used as an information display device, and the convenience can be further improved.
- the reception sensitivity using a narrow-band crystal filter for the antenna filter of the wireless unit 1 By realizing a longer communication distance than conventional keyless entry systems and using the SS method, it is possible to achieve a practical wireless system that is resistant to interference even at long communication distances. is there.
- the present invention enables bidirectional communication at a communication distance of about 150 m between the slave unit and the master unit, and refers to the information obtained by the car navigation system using the keyless entry system. It is suitable for an information sharing system that enables it.
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- Atmospheric Sciences (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Mobile Radio Communication Systems (AREA)
- Selective Calling Equipment (AREA)
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Abstract
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JP2004315093A JP2006123738A (ja) | 2004-10-29 | 2004-10-29 | 車載情報機器の情報共有システム |
JP2004-315093 | 2004-10-29 |
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WO2006046635A1 true WO2006046635A1 (ja) | 2006-05-04 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001004387A (ja) * | 1999-06-23 | 2001-01-12 | Toyota Motor Corp | 携帯型端末装置及び車載情報処理装置 |
JP2003065773A (ja) * | 2001-08-30 | 2003-03-05 | Mazda Motor Corp | 購入支援システム |
JP2004062314A (ja) * | 2002-07-25 | 2004-02-26 | Space Tag Inc | 情報配信システム |
JP2004304768A (ja) * | 2003-03-19 | 2004-10-28 | Nippon Dempa Kogyo Co Ltd | 高周波無線機 |
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JPH08261774A (ja) * | 1995-03-20 | 1996-10-11 | Hitachi Ltd | 経路誘導装置および情報提供システム |
JPH0981885A (ja) * | 1995-09-14 | 1997-03-28 | Toshiba Corp | ナビゲーション装置及び携帯型情報記録再生装置 |
JP3893647B2 (ja) * | 1996-09-30 | 2007-03-14 | マツダ株式会社 | ナビゲーション装置 |
JP3852754B2 (ja) * | 2001-03-14 | 2006-12-06 | 株式会社デンソー | 携帯ナビゲーションシステム及びナビゲーションシステムを有する携帯電話 |
JP2004110101A (ja) * | 2002-09-13 | 2004-04-08 | Bemap:Kk | サービス情報配信システム |
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- 2005-10-27 WO PCT/JP2005/019764 patent/WO2006046635A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001004387A (ja) * | 1999-06-23 | 2001-01-12 | Toyota Motor Corp | 携帯型端末装置及び車載情報処理装置 |
JP2003065773A (ja) * | 2001-08-30 | 2003-03-05 | Mazda Motor Corp | 購入支援システム |
JP2004062314A (ja) * | 2002-07-25 | 2004-02-26 | Space Tag Inc | 情報配信システム |
JP2004304768A (ja) * | 2003-03-19 | 2004-10-28 | Nippon Dempa Kogyo Co Ltd | 高周波無線機 |
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