CN201718054U - Handheld audit device based on wireless communication technology - Google Patents
Handheld audit device based on wireless communication technology Download PDFInfo
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- CN201718054U CN201718054U CN2010202555238U CN201020255523U CN201718054U CN 201718054 U CN201718054 U CN 201718054U CN 2010202555238 U CN2010202555238 U CN 2010202555238U CN 201020255523 U CN201020255523 U CN 201020255523U CN 201718054 U CN201718054 U CN 201718054U
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Abstract
The utility model relates to a handheld audit device based on wireless communication technology, and a general I/O port of a main processor is connected with a clock port, a data port, a configuration enabling port, a transceiving control port, a transmission enabling port, a digital signal input port and a digital signal output port of a radio frequency integrated transceiving chip; a serial data port of the main processor is connected with the serial data port of an auxiliary processor; a display screen interface, a memory interface and a camera head interface of the auxiliary processor are respectively connected with a liquid crystal display screen, a memory and a camera head module; an audio signal output port of the auxiliary processor is connected with a voice interface chip; the serial data port of the auxiliary processor is connected with a special short range communication/global mobile communication two-in-one module; the radio frequency integrated transceiving chip is connected with a transmitting and receiving antenna via a transmitting and receiving impedance matching circuit; and the device can carry out audit and management on a vehicle under the high-speed driving state of the vehicle and well protect the running and the operation of the vehicle.
Description
Technical field
The utility model relates to a kind of transportation warrant of commerial vehicle that is used for according to inspection equipment.
Background technology
Along with developing rapidly of economy and communication, the operation of vehicle and problems of operation become increasingly conspicuous and are serious, drive, refuse to do the operation license without a license, escape annual test, divert car plate, use false car plate, the repacking stolen vehicle, do not have card and illegal phenomenon violating the regulations such as swarm into and increase day by day; And, the management of the strange land of vehicle also exist leak, existing vehicle management be limited to basically this province or this city among a small circle in, mainly be confined to impose toll for the strange land management of vehicles at charging section or toll bridge crossing.This way to manage has only solved the problem of imposing road toll, but can't handle for the violating the regulations or hit-and-run of vehicle at all, and daily management is not more known where to begin.
How ensured the operation and the operation of vehicle, become the major issue of traffic administration by supervision.Way to manage for haulage vehicle is to provide papery card carriage path and road transport practitioner working qualification card at present.But paper document is forged easily, and information is distorted easily, and governance efficiency is very low, and on-the-spot verification is very difficult, and it is of common occurrence that the driver and conductor denies phenomenon.So, use informationization technology to realize that automatically the demand of license inspection is urgent day by day.
Not long ago, Ministry of Communications proposed to carry out card carriage path in some provinces and road transport practitioner working qualification demonstrate,proves electronic pilot work.Adopt IC-card and IC-card key management system, realize functions such as data security transmission, authentication, empowerment management and confirmation of responsibility.
Compare with the traditionally on paper certificate, it is convenient that IC-card certificate information memory space is big, Card read/write upgrades, and can effectively reduce certificate forgery and information and distort risk.Though solved some problems that paper document exists, when certificate validity check, need parking to check, can't accomplish the vehicle auditing and the management of efficient quick, especially the vehicle of running at high speed on to road is powerless especially.
The utility model content
The purpose of this utility model provides a kind of hand-held inspection equipment based on wireless communication technology, can under the state of high vehicle speeds, check and manage vehicle, escape annual test to solve, divert car plate, use false car plate, reequip stolen vehicle, refuse to do the operation license, do not have illegal phenomenons violating the regulations such as card is swarmed into, hit-and-run, thereby ensured the operation and the operation of vehicle.
For achieving the above object, the utility model is by the following technical solutions:
A kind of hand-held inspection equipment based on wireless communication technology is made of primary processor, auxiliary processor, the integrated transceiving chip of radio frequency, LCDs, memory, speech interface chip, the two-in-one module of Dedicated Short Range Communications,/global mobile communication, camera module; It is characterized in that:
The the 5th, the 6th, the 7th mouth line in the general purpose I of primary processor/O port P2 mouth is connected with clock port, FPDP, the configuration enable port of the integrated transceiving chip of radio frequency respectively;
Zero-bit mouth line in the general purpose I of primary processor/O port P6 mouth is connected with the field intensity signal output port of the integrated transceiving chip of radio frequency;
The the 3rd, the 4th mouth line in the general purpose I of primary processor/O port P2 mouth is connected with transmitting-receiving control port, the transmission enable port of the integrated transceiving chip of radio frequency respectively;
The the 0th, first mouth line in the general purpose I of primary processor/O port P2 mouth is connected with digital signal input end mouth, the digital signal output end mouth of the integrated transceiving chip of radio frequency respectively;
Transmission mouth line in No. zero serial data port of primary processor and receiving port line respectively with No. zero serial data port of auxiliary processor in the receiving port line and send a mouth line and be connected;
The display screen interface of auxiliary processor is connected with LCDs with 24 bit address lines by 16 position datawires;
The memory interface of auxiliary processor is connected with memory with 16 bit address lines by 16 position datawires;
The utilizing camera interface of auxiliary processor is connected with camera module with 8 bit address lines by 8 position datawires;
The Audio output port of auxiliary processor is connected with serial data port, the serial clock port of speech interface chip;
A serial data port of auxiliary processor sends a mouthful line with the serial data of the Dedicated Short Range Communications, of the two-in-one module of Dedicated Short Range Communications,/global mobile communication and is connected with the receiving port line;
No. two serial data ports of auxiliary processor send a mouthful line with the serial data of the global mobile communication of the two-in-one module of Dedicated Short Range Communications,/global mobile communication and are connected with the receiving port line;
The radio frequency transmit port of the integrated transceiving chip of radio frequency is connected with transmitting antenna through sending impedance matching circuit;
The radio frequency receiving port of the integrated transceiving chip of radio frequency is connected with reception antenna through receiving impedance matching circuit.
Design of the present utility model is: when vehicle has been finished the license application or paid dues, vehicle supervision department by specific security algorithm with driving license information, license plate number, the license term of validity, operation class row, vehicle annual test information etc. is entered in the IC-card, the driver will carry IC-card with car, before each startup vehicle, IC-card to be inserted in the IC-card module of mobile unit, the vehicle that this mobile unit has been installed is by in the communication zone of hand-held inspection equipment the time, hand-held inspection equipment utilization Dedicated Short Range Communications, net GPS realizes that with mobile unit information interaction is connected, read the content of IC-card, carry out the affirmation of authentication or legitimacy and carry out the typing of unlawful practice; The data that generated are simultaneously submitted to the back-stage management center in real time by mobile radio communication, in the hope of the further affirmation and the use of information.
Description of drawings
Fig. 1 is the circuit theory diagrams of hand-held inspection equipment.
Fig. 2 is the circuit theory diagrams of mobile unit.
Fig. 3 is the schematic diagram that sends impedance matching circuit.
Fig. 4 is the schematic diagram that receives impedance matching circuit.
Embodiment
The utility model is a kind of hand-held inspection equipment based on wireless communication technology, please refer to Fig. 1, hand-held inspection equipment is made up of primary processor MSP430F135, auxiliary processor S3C2440A, an integrated transceiving chip ML5800 of radio frequency, LCDs S1D1135506, memory K9F1208, speech interface chip CS4334, the Dedicated Short Range Communications,/two-in-one module GM862-GPS of global mobile communication GPS/GSM, a camera module C3188A;
The the 5th, the 6th, the 7th mouth line P2.5 in the general purpose I of a primary processor MSP430F135/O port P2 mouth, P2.6, P2.7 are connected with clock port CLK, FPDP DATA, the configuration enable port EN of an integrated transceiving chip ML5800 of radio frequency respectively;
Zero-bit mouth line P6.0 in the general purpose I of a primary processor MSP430F135/O port P6 mouth is connected with the field intensity signal output port RSSI of an integrated transceiving chip ML5800 of radio frequency;
The the 3rd, the 4th mouth line P2.3, P2.4 in the general purpose I of a primary processor MSP430F135/O port P2 mouth is connected with transmitting-receiving control port RXON, the transmission enable port XCEN of an integrated transceiving chip ML5800 of radio frequency respectively;
The the 0th, first mouth line P2.0, P2.1 in the general purpose I of a primary processor MSP430F135/O port P2 mouth is connected with digital signal input end mouth DIN, the digital signal output end mouth DOUT of an integrated transceiving chip ML5800 of radio frequency respectively;
Zero-bit in the general purpose I of a primary processor MSP430F135/O port P3 mouth, first mouth line P3.0, P3.1 are connected with serial received port R1OUT with the serial transmit port T1IN of a level transferring chip MAX3222C respectively; Be connected with host computer by a level transferring chip MAX3222C;
Transmission mouth line TXD0 among No. zero serial data port UART0 of a primary processor MSP430F135 and receiving port line RXD0 respectively with No. zero serial data port of an auxiliary processor S3C2440A in receiving port line RXD0 and send a mouth line TXD0 and be connected;
The display screen interface SCREEN of an auxiliary processor S3C2440A is connected with the FPDP D0-D15 of a LCDs S1D1135506 by 16 position datawires;
The display screen interface SCREEN of an auxiliary processor S3C2440A is connected with the address port ADDR0-ADDR24 of a LCDs S1D1135506 by 24 bit address lines;
The memory interface FLASH of an auxiliary processor S3C2440A is connected with the FPDP D0-D15 of memory K9F1208 by 16 position datawires;
The memory interface FLASH of an auxiliary processor S3C2440A is connected with the address port ADDR0-ADDR15 of memory K9F 1208 by 16 bit address lines;
The utilizing camera interface CAMERA of an auxiliary processor S3C2440A is connected with the FPDP Y0-Y7 of camera module C3188A by 8 position datawires;
The utilizing camera interface CAMERA of an auxiliary processor S3C2440A is connected with the address port UV0-UV7 of camera module C3188A by 8 bit address lines;
Audio output port SPK+, the SPK-of an auxiliary processor S3C2440A is connected with serial data port SDATA, the serial clock port MCLK of speech interface chip CS4334;
The serial data port UART1 of an auxiliary processor S3C2440A sends a mouthful line TX-GPS with the serial data of the Dedicated Short Range Communications, GPS of Dedicated Short Range Communications,/two-in-one module GM862-GPS of global mobile communication GPS/GSM and is connected with receiving port line RX-GPS;
No. two serial data port UART2 of an auxiliary processor S3C2440A send a mouthful line TX-GSM with the serial data of the global mobile communication GSM of Dedicated Short Range Communications,/two-in-one module GM862-GPS of global mobile communication GPS/GSM and are connected with receiving port line RX-GSM;
The radio frequency transmit port TXO of an integrated transceiving chip ML5800 of radio frequency sends impedance matching circuit through No. one and is connected with a transmitting antenna ANT1;
The radio frequency receiving port RXI of an integrated transceiving chip ML5800 of radio frequency receives impedance matching circuit through No. one and is connected with a reception antenna ANT2;
Please refer to Fig. 2, mobile unit is made of No. two primary processor MSP430F135, No. two integrated transceiving chip ML5800 of radio frequency, No. two LCDs LCM12832ZK, IC-card module RD-IX-C;
The the 5th, the 6th, the 7th mouth line P2.5 in the general purpose I of No. two primary processor MSP430F135/O port P2 mouth, P2.6, P2.7 are connected with clock port CLK, FPDP DATA, the configuration enable port EN of No. two integrated transceiving chip ML5800 of radio frequency respectively;
Zero-bit mouth line P6.0 in the general purpose I of No. two primary processor MSP430F135/O port P6 mouth is connected with the field intensity signal output port RSSI of No. two integrated transceiving chip ML5800 of radio frequency;
The the 3rd, the 4th mouth line P2.3, P2.4 in the general purpose I of No. two primary processor MSP430F135/O port P2 mouth is connected with transmitting-receiving control port RXON, the transmission enable port XCEN of No. two integrated transceiving chip ML5800 of radio frequency respectively;
The the 0th, first mouth line P2.0, P2.1 in the general purpose I of No. two primary processor MSP430F135/O port P2 mouth is connected with digital signal input end mouth DIN, the digital signal output end mouth DOUT of No. two integrated transceiving chip ML5800 of radio frequency respectively;
The 4th, the 5th, the 6th mouth line P1.4 in the general purpose I of No. two primary processor MSP430F135/O port P1 mouth, P1.5, P1.6 respectively with the read-write control port RW of No. two LCDs LCM12832ZK, enable control port RE, sheet selected control system port RS is connected;
Seven mouth lines of zero-bit to the P0.0 to P0.7 in the general purpose I of No. two primary processor MSP430F135/O port P0 mouth is connected with the FPDP DB0-DB7 of No. two LCDs LCM12832ZK respectively;
Second, the 3rd mouth line P1.2, P1.3 in the general purpose I of No. two primary processor MSP430F135/O port P1 mouth is connected with serial transmit port TXD, the serial received port RXD of IC-card module respectively;
Zero-bit in the general purpose I of No. two primary processor MSP430F135/O port P3 mouth, first mouth line P3.0, P3.1 are connected with serial received port R1OUT with the serial transmit port T1IN of No. two level transferring chip MAX3222C respectively; Be connected with host computer by No. two level transferring chip MAX3222C:
The radio frequency transmit port TXO of No. two integrated transceiving chip ML5800 of radio frequency sends impedance matching circuit through No. two and is connected with No. two transmitting antenna ANT3;
The radio frequency receiving port RXI of No. two integrated transceiving chip ML5800 of radio frequency receives impedance matching circuit through No. two and is connected with No. two reception antenna ANT4.
Please refer to Fig. 3, No. two the transmission impedance matching circuit is identical with a transmission impedance matching circuit structure, all is to be made of inductance L 1, capacitor C 3, C4, C5, C6.
Please refer to Fig. 4, No. two the reception impedance matching circuit is identical with a reception impedance matching circuit structure, all is to be made of inductance L 2, capacitor C 1, C2.
Send impedance matching circuit and receive impedance matching circuit and all adopt prior art, so superfluous stating no longer in addition.
C3188A is 1/3 " colorful digital camera; its photosensitive unit is the image sensor dice of the OV7620 model of U.S. OMNIVISION technology company; the data-interface of this image sensor dice is supported 8/16 bit data stream; and all camera functions; such as: automatic exposure, Automatic white balance, gamma verification; automatic gain can be passed through I side C bus programming Control.
The CS4334 chip be the U.S. Cirrus Logic company stereo numeral of producing to simulation (D/A) pio chip, comprise the output analog filtering of interpolation, 1 D/A converter and 8 pin package.All main voice data interface formats of CS4334 product support, CS4334 comprise that numeral goes heavily can work on the sheet under 5 volts of voltages of individual event, and require minimum circuit support.
GM862-GPS is an Italian TELIT company product, be a high accuracy, highly sensitive technical grade GSM/GPRS/GPS product, this product are the Pin-to-Pin encapsulation, four frequency functions (EGSM850/900/1800/1900MHZ) all can be used the GM862-GPS product whole world.Built-in SIM card slot, MMCX RF interface, interference monitoring, embedded ICP/IP protocol stack, automatic scan frequency range (no SIM card), GM862-GPS has the ability (3M NV Memory uses for the user, and 1.5MRAM uses for engine) of inside programming simultaneously, and GM862-GPS supports I side C and SPI interface simultaneously, can directly expand external component, as transducer, camera, display etc.
K9F1208 is big capacity, the highly reliable Flash memory of the employing NAND technology of Samsung's production.Its memory capacity is 64M * 8, in addition also has the free storage of 2048K * 8.This device adopts TSSOP48 encapsulation, operating voltage 2.7～3.6V.K9F1208 is 200 μ s to the write operation required time of 528 byte one pages, and the erase operation of one of 16K byte is only needed 2ms.
S1D1135506 is the color LCD/CRT/TV image controller of Seiko Epson Corporation at Embedded System Design.Be to be the multi-purpose LCD display controller that basic controller grows up with S1D13504, its built-in RAM DAC hardware X-Y axle transposition 2 dimension accelerators, have 114 registers, can be provided with various display mode neatly, function is very powerful, can with popular in the market multiple cpu bus compatibility.
S1D1135506 supports to be up to the LCD interface of 16 bit data width, uses FRM and tuning (dithering) technology, can be on TFT, LCD, CRT and TV the highest demonstration 64K color.It disposes 16 memory interfaces, can support the EDO-DRAM of the highest 2MB.Support 6 looks, the color structure of 256 looks and true color.
MSP430F135 microprocessor (or claiming single-chip microcomputer) is a kind of powerful single-chip microcomputer with super low-power consumption characteristic.Its memory module is minimum a kind of of energy consumption in all inner integrated Flash memory products of present industry, compare with other microprocessor, both dwindled the wiring board space, reduced system cost again, all shown significantly advantage in system design, exploitation debugging and practical application.
RT9183-3.3 is the power management chip of a high-performance, low pressure reduction LDO (low-dropout regulator).
S3C2440 is the 16/32-bit risc microcontroller that Samsung produces, and S3C2440 is the chip of the design based on handheld device of a special use based on the ARM920T kernel, and its characteristics have low-power consumption, and are simple, stable, the processing computing capability of high speed.
The IC-card module is to be the circuit module of core with the 89C54 single-chip microcomputer, is prior art, and this module provides two serial line interfaces, and one is the serial line interface of communicating by letter with IC-card, and another is the serial line interface that the user controls, and correspondent peripheral circuit is arranged in addition.
LM1117 is an in-line LDO (low-dropout regulator).Input current equates that with output current LM 1117 input 5V are output as 3.3V.
Hand-held inspection equipment is with the data exchange ways and the wireless data delivery means of Dedicated Short Range Communications, standard, safe and reliable information exchange between realization and the vehicle-carried mobile equipment.Hand-held inspection equipment is by lithium battery power supply, provide required high stable signal source by RT9183-3.3, the highway inspector uses hand-held inspection equipment and mobile unit to realize that information interaction is connected, a primary processor MSP430F135 of hand-held inspection equipment is according to the setting of program, wake-up signal (digital signal) behind the coding is sent to the integrated transceiving chip ML5800 of radio frequency No. one, by becoming the radiofrequency signal of 5.8GHz after the integrated transceiving chip ML5800 modulation of radio frequency, this radiofrequency signal is loaded on transmitting antenna ANT1 by sending impedance matching circuit for No. one, send by a transmitting antenna ANT1, emission rate is 1.5Mbit/s, when vehicle passes through the communication zone (in 20 meters scopes) of hand-held inspection equipment, after No. two reception antenna ANT4 of mobile unit receive this wake-up signal, receive impedance matching circuit by No. two and pass to the integrated transceiving chip ML5800 of radio frequency No. two, after No. two integrated transceiving chip ML5800 of radio frequency demodulation, pass to primary processor MSP430F135 No. two by digital signal output end mouth DOUT, after No. two primary processor MSP430F135 receives this signal, setting according to program is decoded, then with the information package in the IC-card, behind the recompile, send to the digital signal input end mouth DIN of No. two integrated transceiving chip ML5800 of radio frequency by the P2.0 port, after No. two integrated transceiving chip ML5800 modulation of radio frequency, become the radiofrequency signal of 5.8GHz, this radiofrequency signal is loaded on No. two transmitting antenna ANT3 by sending impedance matching circuit for No. one, send by No. two transmitting antenna ANT3, after the transmitting antenna ANT1 reception of this signal by hand-held inspection equipment, receive impedance matching circuit by No. one and pass to the integrated transceiving chip ML5800 of radio frequency No. one, after an integrated transceiving chip ML5800 of radio frequency demodulation, pass to primary processor MSP430F135 No. one by digital signal output end mouth DOUT, after No. one primary processor MSP430F135 receives this signal, setting according to program is decoded, read the content of IC-card, the content of IC-card is compared with the hand-held illegal historical record of storing in the device memory of vehicle peccancy of checking, examine this vehicle whether illegal problem violating the regulations is arranged, then to the driving license information of vehicle supervision department's typing, license plate number, the license term of validity, operation class row, vehicle annual test information etc. is checked, carry out the authentication or the license term of validity, operation class row, the affirmation of validity such as vehicle annual test information, confirm errorless after, hand-held inspection equipment algorithm is according to the rules added a cover inspection validity electronics to IC-card and is stabbed, and hand-held inspection equipment also can be written to the unlawful practice of vehicle in the IC-card; Hand-held inspection equipment can also carry out image to the vehicle that has unlawful practice on the road by camera and capture, pass automobile image and relevant inspection information back the back-stage management center in real time in order to next step management and punishment use, thereby guarantee the safe operation and the operation of vehicle.
Two buttons are arranged on the mobile unit, and first button is a function key, and second button is acknowledgement key; The effect of button is to select corresponding function according to the menu on No. two LCDs; The result of each inspection will be presented on No. two LCDs.
Hand-held inspection equipment has five buttons: button 1: directionkeys-on; Button 2: directionkeys-down; Button 3: directionkeys-left side; Directionkeys-right side, button 5: acknowledgement key; The effect of button is to select corresponding function according to the menu on LCDs; The result of each inspection is also shown on LCDs, and by the speech interface prompting of sounding.
The back-stage management center is made of Computer Database, and mobile unit and hand-held inspection equipment realize that by the Dedicated Short Range Communications, net information of vehicles is connected alternately, is connected alternately by the realization of global mobile communication net between mobile unit and the back-stage management center; Be connected alternately by the realization of global mobile communication net between hand-held inspection equipment and the back-stage management center.
Claims (1)
1. the hand-held inspection equipment based on wireless communication technology is made of primary processor, auxiliary processor, the integrated transceiving chip of radio frequency, LCDs, memory, speech interface chip, the two-in-one module of Dedicated Short Range Communications,/global mobile communication, camera module; It is characterized in that:
The the 5th, the 6th, the 7th mouth line in the general purpose I of primary processor/O port P2 mouth is connected with clock port, FPDP, the configuration enable port of the integrated transceiving chip of radio frequency respectively;
Zero-bit mouth line in the general purpose I of primary processor/O port P6 mouth is connected with the field intensity signal output port of the integrated transceiving chip of radio frequency;
The the 3rd, the 4th mouth line in the general purpose I of primary processor/O port P2 mouth is connected with transmitting-receiving control port, the transmission enable port of the integrated transceiving chip of radio frequency respectively;
The the 0th, first mouth line in the general purpose I of primary processor/O port P2 mouth is connected with digital signal input end mouth, the digital signal output end mouth of the integrated transceiving chip of radio frequency respectively;
Transmission mouth line in No. zero serial data port of primary processor and receiving port line respectively with No. zero serial data port of auxiliary processor in the receiving port line and send a mouth line and be connected;
The display screen interface of auxiliary processor is connected with LCDs with 24 bit address lines by 16 position datawires;
The memory interface of auxiliary processor is connected with memory with 16 bit address lines by 16 position datawires;
The utilizing camera interface of auxiliary processor is connected with camera module with 8 bit address lines by 8 position datawires;
The Audio output port of auxiliary processor is connected with serial data port, the serial clock port of speech interface chip;
A serial data port of auxiliary processor sends a mouthful line with the serial data of the Dedicated Short Range Communications, of the two-in-one module of Dedicated Short Range Communications,/global mobile communication and is connected with the receiving port line;
No. two serial data ports of auxiliary processor send a mouthful line with the serial data of the global mobile communication of the two-in-one module of Dedicated Short Range Communications,/global mobile communication and are connected with the receiving port line;
The radio frequency transmit port of the integrated transceiving chip of radio frequency is connected with transmitting antenna through sending impedance matching circuit;
The radio frequency receiving port of the integrated transceiving chip of radio frequency is connected with reception antenna through receiving impedance matching circuit.
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| CN2010202555238U CN201718054U (en) | 2010-07-12 | 2010-07-12 | Handheld audit device based on wireless communication technology |
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| CN2010202555238U CN201718054U (en) | 2010-07-12 | 2010-07-12 | Handheld audit device based on wireless communication technology |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402860A (en) * | 2011-10-25 | 2012-04-04 | 深圳市华盈泰科技有限公司 | Handheld vehicle information management terminal |
| US20160006922A1 (en) * | 2009-12-07 | 2016-01-07 | Cobra Electronics Corporation | Vehicle Camera System |
| WO2016095633A1 (en) * | 2014-12-18 | 2016-06-23 | 北京握奇智能科技有限公司 | Handheld detection terminal |
| US10677888B2 (en) | 2015-09-28 | 2020-06-09 | Escort Inc. | Radar detector with multi-band directional display and enhanced detection of false alerts |
| US11061108B1 (en) | 2017-12-18 | 2021-07-13 | Escort Inc. | Sliding window discrete Fourier transform (SWDFT) police signal warning receiver |
-
2010
- 2010-07-12 CN CN2010202555238U patent/CN201718054U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160006922A1 (en) * | 2009-12-07 | 2016-01-07 | Cobra Electronics Corporation | Vehicle Camera System |
| US9848114B2 (en) * | 2009-12-07 | 2017-12-19 | Cobra Electronics Corporation | Vehicle camera system |
| US10142535B2 (en) | 2009-12-07 | 2018-11-27 | Cobra Electronics Corporation | Vehicle camera system |
| US10298832B2 (en) | 2009-12-07 | 2019-05-21 | Cobra Electronics Corporation | Vehicle camera system |
| CN102402860A (en) * | 2011-10-25 | 2012-04-04 | 深圳市华盈泰科技有限公司 | Handheld vehicle information management terminal |
| WO2016095633A1 (en) * | 2014-12-18 | 2016-06-23 | 北京握奇智能科技有限公司 | Handheld detection terminal |
| US10677888B2 (en) | 2015-09-28 | 2020-06-09 | Escort Inc. | Radar detector with multi-band directional display and enhanced detection of false alerts |
| US11061108B1 (en) | 2017-12-18 | 2021-07-13 | Escort Inc. | Sliding window discrete Fourier transform (SWDFT) police signal warning receiver |
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