RU189705U1 - VIDEO INTERFACE VEHICLE - Google Patents

Abstract

The invention relates to devices for transmitting information, its visualization on the vehicle dashboard in the form of a video signal, as well as for connecting devices to the regular vehicle systems, the installation of which is not originally provided for the vehicle configuration. The device includes one or more printed boards with an information input device (1), a Wi-Fi and Bluetooth wireless connection module (2), a hands-free module (3), a 3G / 4G / GSM communication module (4), a pr data processing and geolocation data (5), peripheral device connection module via USB (6), SD card connection module (7), infrared port device management module (8), video signal switching and conversion module (9), interaction module additional devices (10), a data bus connection module (11), a touch control connection module (12), an RGB \ Digital RGB \ LVDS (13) video signal processing module, a navigation system installation module (13a), a CVBS video signal processing module and stereo audio (14), a video processing module of the HDMI format (15), a programming and software update module (16), an audio signal switching and conversion module with an output for connecting a speaker (17), a central control module (18).

Description

TECHNICAL FIELD:

The invention relates to devices for transmitting information, its visualization on the vehicle dashboard in the form of a video signal, as well as for connecting devices to the standard vehicle systems, the installation of which is not originally provided for by the vehicle configuration.

LEVEL OF TECHNOLOGY:

The closest analogue of the utility model is a device that is widely known because of its promotion for commercial purposes on the Internet via the link:

https://www.amazon.com/Video-Interface-HDMI-BMW-F01/dp/B01MRSXTIR/ref=pd_sbs_107_2? _encoding = UTF8 & pd_rd_i = B01MRSXTIR & pd_rd_r = 967b638e-867 -e -e -676 -e-667 -e-667 -e -667 -e-667 -e-667 -e-667 -e-667 -e-667 -e-667-iR_RXXTIR &

3933c5359799 & pd_rd_w = V7zPw & pd_rd_wg = kgw5b & pf_rd_i = desktop-dp-

sims & pf_rd_m = ATVPDKIKX0DER & pf_rd_p = 5825442648805390339 & pf_rd_r = T241PJK14223JWRXWD74 & pf_rd_s = desktop-dp-

sims & pf_rd_t = 40701 & psc = l & refRID = T241PJK14223JWRXWD74

The previously known device is a video interface - a device designed to be installed in a car by connecting it to its standard systems. The device provides the ability to connect to the car is not provided by the manufacturer of the device, such as: camera front, rear, all-round view, TV set-top boxes, CD players, navigation devices, tablet computers and others. At the same time, the control of the installed third-party devices can be brought to both the regular and third-party controls of the car.

The disadvantages of the previously known analogue are:

the presence of only one LVDS “input-output” port, which is responsible for the exchange of video signal data from viewing devices (cameras of various types), as well as connecting it to the vehicle’s standard systems via a household (unshielded) eight-pin connector, which in aggregate can cause interference with the device operation due to the simultaneous use of one channel for I / O data, which does not have a sufficient degree of security;

lack of hardware and software support for geolocation devices operating with the GLONASS navigation system;

the lack of hardware and software support for the Russian-language interface for controlling the on-board systems of the vehicle, including hints when maneuvering with the front, rear, all-around cameras of the vehicle.

DISCLOSURE OF THE ESSENCE OF A USEFUL MODEL:

The task of the utility model is to eliminate the drawbacks of the previously known analogue.

The technical result of the utility model is the improvement and stabilization of the quality of the output video signal, the ability to connect to external car systems any external devices (including multimedia devices, network, wireless devices, cellular devices, navigation and geolocation devices, removable media) with the ability to read their contents, as well as the hardware support of the Russian language, in contrast to the previously known analogue, which allows to facilitate the integration of the utility model in the beat, released for the Russian market.

The technical result is achieved due to the fact that the switching and converting video signal module (9) has two separate ports of the LVDS format, one for the “input” and “output”, and the incoming and outgoing data are received and processed by a high-performance microcontroller (9a ), Ethernet transceiver (9b), 4-port managed Ethernet switch with two MAC addresses (9b), two high-speed SerDes (Serializer / Deserializer) APIX2 (9g) and APIX3 (9d) blocks, as well as a video signal processing module HDMI format with HDCP support (9e), what about Ensures the stability of the video signal and the absence of interference when it is output to a regular or third-party video signal visualization tool (screen, tablet computer, etc.).

The ability to support navigation systems using GLONASS is achieved due to the presence of a hybrid module receiving and processing geolocation data (5) operating in both GPS and GLONASS mode, as well as the presence of specialized AT commands perceived by the 3G / 4G / GPS communication module (4 ), allowing you to control GPS / GLONASS and read data, work in A-GNSS mode (Assisted Global Navigation Satellite Systems), and the interaction of the modules and GPS / GLONASS is organized on a DDC (Display Data Channel) interface.

The hardware support for the Russian language and, as a result, the simplification of the integration of the utility model into the vehicle systems is achieved through the architecture of the central control module (18), originally developed according to standards providing for support of software using the Cyrillic alphabet.

IMPLEMENTATION OF USEFUL MODEL:

The utility model includes one or more printed circuit boards installed in the housing with information input device (1), Wi-Fi and Bluetooth wireless connection module (2), hands-free module (3), 3G / 4G / GSM communication module (4), geolocation data receiving and processing module (5), peripheral device connection module via USB (6), SD card connection module (7), infrared port device management module (8), video signal switching and conversion module (9 ), module interaction with additional devices (10), m by the data bus connection (11), the touch control connection module (12), the RGB / Digital RGB / LVDS video processing module (13), the navigation system installation module (13a), the CVBS video processing module and the stereo audio signal (14 ), a video processing module of the HDMI format (15), a programming and software update module (16), an audio signal switching and conversion module (17), a central control module (18).

The input device (1) is used to connect and receive data from electronic control devices of the vehicle, such as joysticks, touch panels (touch pads), capacitive and resistive displays, and others.

The Wi-Fi and Bluetooth connection module (2) contains Wi-Fi and Bluetooth transceivers and is designed to connect devices via a wireless connection according to the IEEE 802.15.2 and IEEE 802.11b / g / n / e standards, respectively. For example, a Wi-Fi connection is used to transfer Internet traffic to a video interface with a connected navigation unit or a separately connected navigation device. The Bluetooth transceiver, in turn, is designed to transmit sound to the car’s navigation system, including using a Hand-Free system with communication devices connected to the car, connecting wireless headphones, and synchronizing other devices that have technical connectivity using Bluetooth technology. The Wi-Fi transceiver is compatible with the IEEE 802.11n standard, which provides wireless data transmission and reception speeds of up to 150 Mbps and is also backward compatible with the IEEE 802.11g standard to provide transmission speeds of up to 54 Mbps. Supports wireless data authorization and encryption with 64/128-bit WEP, WPA, WPA2, TKIP, AES, 802.1X and CCX standards (CISCO) for security systems of wireless networks, and also supports the IEEE 802.11e standard with WMM QOS protocols (Wi- Fi Multimedia Quality of Service) and PS WMM (Power-Saving Wi-Fi Multimedia) for a large number of multimedia applications. The Bluetooth transceiver is compatible with the specification of Bluetooth version 2.1, backward compatible with versions 1.1, 1.2, 2.0, supports EDR (improved data transfer rate), AFH (adaptive frequency hopping), connection protocols SCO, eSCO.

The hands-free module (3) is an electro-acoustic device that converts acoustic oscillations into an electrical signal, designed to receive voice messages from a person. It can be used as a factory car microphone, and additionally installed a microphone. Using the hands-free module (3) in conjunction with the Wi-Fi and Bluetooth connection module (2), hands-free function is implemented, that is, communication via a communication device (mobile phone, smartphone, tablet computer, etc.). etc.) occurs when using the microphone and the speaker, which is external to the dashboard, or to the standard car speaker system. Used to connect a wireless headset (headset), communication devices and standard vehicle systems. Supports the minimum set of AT commands of the GSM 07.07 specification for providing the ability to make calls, answer calls, end a call, adjust the volume. Transmits mono sound in one channel, and in the case of hardware support for a plug-in third-party headset - in stereo sound. Through the “Headset” profile, if there is a Bluetooth 1.2 or higher in the device being connected, it is possible to output to the headset all sound accompaniment of the communication device, including listening on the headset or through the car’s standard speakers all operations confirmation signals, audio files, ringtones, sound range of videos.

The 3G / 4G / GSM communication module (4) contains a transceiver that uses the networks of mobile operators to exchange information with other devices that support the relevant communication standards, and supports the connection of external devices that use SIM cards to perform communication functions through a specific operator (for example, using a USB modem). The 3G / 4G / GSM communication module (4) supports 3G data transmission technologies (HSDPA, UMTS), EDGE, GPRS, GSM, data reception speed in 3G networks up to 7.2 megabits per second and when sending data up to 5.76 megabits per second, the speed of data reception in networks EDGE / GPRS - up to 236 kilobits per second, the data transfer rate in HSDPA mode (direction “base” - “subscriber”) is 7.2 megabits per second, in mode HSUPA (direction “subscriber” - "Base") - 5.6 megabits per second.

The module for receiving and processing geolocation data (5) is designed to receive geo-location coordinates (GPS coordinates) from various satellite systems and transmit this data to the navigation device.

The module for connecting peripheral devices via USB (6) is designed to connect any devices that support the ability to connect via the Universal Serial Bus port (USB, universal serial bus) with the subsequent implementation of the data exchange function. Plug-in devices can include removable data storage devices (flash-cards, hard drives, USB-adapters for memory cards of other formats, USB-compatible manipulators: keyboards, mice and other devices). The module for connecting peripheral devices via USB (6) contains a microcontroller that provides a hardware implementation of the USB interface and can operate in USB-Host modes (allowing you to read data from USB storage devices and other devices) and USB-Slave (connect to a computer and identify yourself like any USB device, depending on the settings). The microcontroller is capable of operating in Full Speed USB 2.0 mode, providing a transfer rate of up to 12 megabits per second. A flash memory with a Serial Peripheral Interface (SPI) is built into the module for implementing a Mass Storage Device. They are programmed from a personal computer via the SPI programmer interface.

The SD card connection module (7) provides the ability to directly connect to the utility model of the appropriate type of storage media with the subsequent possibility of data exchange.

The device control module via the infrared port (8) is used to control the additionally connected devices using infrared commands sent by the module to the IR receiver. The signal is transmitted by IR-LED with the corresponding modulation frequency.

The video signal switching and conversion module (9) consists of a transcoder and a video signal switch, interconnects external additional image sources (front, rear, all-round cameras, TV set-top boxes, CD players, navigation devices, tablet computers and others) and standard vehicle systems for the subsequent display of the image on a standard or other means of displaying information based on a liquid crystal display (for example, a dashboard or additionally installed monitor).

The module of interaction with additional devices (10) provides hardware compatibility and is responsible for connecting external devices to the standard car systems that provide output and visualization of the video signal coming through the switching and video signal conversion module (9).

The data bus connection module (11) requires interconnection of the data transmission subsystems (data bus) of the vehicle’s standard systems and the utility model’s data bus, followed by reading the parameters and transferring data from the utility model to the systems of the connected car, using such data buses like CAN, LIN, MOST, Ethernet, FlexRay and others.

The touch control connection module (12) is used to connect touch panels (glasses) to control devices connected to the utility model. Touch panels can be either built into the monitor, or connected separately with the removal of the dashboard of the car. The touch control connection module (12) supports both resistive and capacitive touch panels and has a separate connector for each type of sensor.

The RGB / Digital RGB / LVDS (13) video signal processing module is used to convert the input signal from non-standard navigation devices to the correct format with the parameters (resolution, quality, brightness, colors) of the input signal, and is responsible for processing and displaying the correct geolocation data from satellite received by the module receiving and processing geolocation data (5). Contains from 2 to 4 modules of RAM (Rapid access memory, RAM) in size from 512 to 2048 megabytes, a high-performance microprocessor for processing incoming data, as well as a module of permanent memory of up to 16 gigabytes.

The CVBS video signal processing and stereo audio signal module (14) is used to connect any CVBS video signal source (digital TV tuners, CD, DVD, BD disk players, cameras, smartphones and tablet control systems from standard car systems - Mirrorlink, and etc.), including the ability to transmit a sound signal from these devices. The module is also used to connect rear, front, side view cameras, with integrated visualization features of intelligent parking lines and parking radar on the screen (s) of the car.

The HDMI video processing module (15) is used to connect any video sources of the High Definition Multimedia Interface format (HDMI, high-resolution multimedia interface), such as: digital TV tuners, Apple TV / Chromecast, Mirrorlink systems, 360 degree all-round viewing systems etc.

The programming and software update module (16) is intended for local or remote software updates of individual modules or the entire video interface. The update is carried out by connecting the programmer or SD card via the SD card connection module (7) with the preloaded software.

The audio signal switching and conversion module (17) consists of a transcoder and a switch, which provide for converting the incoming audio signal from third-party devices and transmitting them to the standard car speakers. The audio signal switching and conversion module (17) has its own connection for an external speaker, and is also responsible for playing voice prompts, such as a navigation system. The module is also responsible for interaction with the audio signal of devices connected with the participation of Wi-Fi and Bluetooth connection modules (2), hands-free communication (3), 3G / 4G / GSM communication (4), and peripheral devices via USB (6).

The central control module (18) coordinates the functioning of all the modules described above, represented in the video interface, and is also responsible for software compatibility with interface visualization languages (including Russian).

In comparison with the previously known analogue, the utility model has the following distinctive features.

When using only one low-voltage differential signaling (LVDS) “input-output” connection connector in a previously known analogue of the utility model, a significant deterioration in the quality of the transmitted signal is possible, as a result, graphic artifacts occur on the video signal visualization device (for example, in image transmission, framerate out of sync, image noise), which significantly affects the safety of the vehicle’s maneuvers when using rear, front, camera cameras govogo review. It is also worth noting that the previously known analog uses to connect to standard car systems LVDS cable with only one proprietary connector (from the input-output port of a previously known analog), while to standard car systems you can connect using eight-pin consumer systems (8 -pin) unshielded connector. In addition, a single twisted pair LVDS cable may not be enough if you connect more than one video source (cameras) to the car, because in this case it is used once for I / O data, which can cause a delay in signal transmission.

The use of this method of signaling is due to the fact that the voltage between the twisted pair LVDS conductors is 350 millivolts (mV), which makes it possible to significantly reduce power consumption compared to other signal transfer methods without losing video signal quality. When using LVDS, the transmitter sends a current of ~ 3.5 milliamperes (mA) to one of the signal conductors, depending on which logical level is to be transmitted, and on the receiving side the current passes through a resistor of 100-120 Ohm (equal to the cable impedance to reduce the reflected signal) and returns to the sender of the signal on another conductor, thus forming a closed electrical circuit.

Unlike the previously known analogue, the video signal switching and conversion module (9) interacts with two connectors for low-voltage differential signaling (LVDS), one of which is designed to receive incoming data from video sources (cameras of various types of cars) , the other is used to output the signal processed by the video interface in a format compatible with the vehicle’s image output facility, standard or third-party. Both connectors have their own shielding and latch at the junction of the cable and connectors, which increases the noise immunity and reliability of fastening, and the connection cables, unlike the previously known analogue, have a proprietary connector at both ends, which provides protection against out-of-sync and possible interference from others data channels in the car, in contrast to the household connector, allowing movement of the cable and, as a consequence, the possible loss of contact connector. In addition, LVDS connectors are installed in the device case, and not rendered on a separate fee, which increases the service life and fault tolerance of the device as a whole.

The process of receiving and processing the video signal is as follows: the incoming analog or digital video signal from external video surveillance devices goes into processing via the LVDS “input” port, converted using a transcoder into a format that is supported by the car’s standard multimedia system, for example, GVIF, LVDS, MOST, FIREWIRE, Apix, Apix2, MIB, MIB2, then with the participation of the RGB / Digital RGB / LVDS video signal processing module (13) is converted to the correct form for display on the connected information display device, after which assistance control module data bus (11) and a central control unit (18), the device sends a signal to the video signal switch, which provides visualization transcoded and processed regular video screens or side of the vehicle upon its transfer into established vehicle system through port LVDS «outlet».

In turn, compatibility with the GLONASS utility model, unlike the previously known analogue, is ensured by the interaction of the central control module (18) with the 3G / 4G / GPS communication modules (4) and the reception and processing of geolocation data (5).

The main feature of the communication module (4) is the presence of specialized AT commands that allow you to control GPS / GLONASS and read data, work in A-GNSS (Assisted Global Navigation Satellite Systems) mode, and the interaction between the modules and GPS / GLONASS is organized by DDC ( Display Data Channel) interface. The communication module (4) has a standard UART port, a built-in antenna monitoring device (short circuit detection, idle speed and protection from them) and fourteen general-purpose input / output, GPIO general-purpose input / output interface (GPIO) outputs using AT commands. The software update of the communication module (“flashing”) is performed via the UART port.

The navigation receiver of the geolocation data receiving and processing module (5) operates in a combined mode, i.e. It uses both GLONASS and GPS satellites to calculate its own coordinates. Optimized for the use of an active antenna, it has temperature-stabilized quartz to reduce the cold start time, it has a built-in data logger for storing them in the device’s memory.

Hardware support for the Russian language interface when outputting a video signal to a car’s screens is achieved through the architecture of the central control module (18), which can process and display by means of a switching and video signal conversion module (9) not only in Latin, but also in Cyrillic

In the considered utility model, the individual modules described above have the following configuration.

The video signal switching and conversion module (9) includes a printed circuit board, on which a high-performance microcontroller [19] is installed, an Ethernet transceiver with a wide temperature range [20], a 4-port managed Ethernet switch with two MAC addresses [21], high-speed multichannel SerDes-APIX3 standard transceiver [22], high-speed multichannel SerDes-standard APIX2 transceiver [23], HDMI video processing module with HDCP support [24], LVDS connector “input” [25], LVDS connector “output” [26 ].

The printed circuit board on which the RGB \ Digital RGB \ LVDS (13) video signal processing module and the navigation system installation module (13a) are located include four memory modules with a capacity of 512–2048 megabytes [27], a high-performance microprocessor [28], and permanent memory up to 16 gigabytes [29].

The body of the utility model is presented as follows:

On the front panel (Fig. 5) there is a slot for SD-cards [30], USB connectors [31, 32, 35], a block of DIP-switches [33], an HDMI connector [34].

On the rear panel (Fig. 6) there are Wi-Fi / Bluetooth antenna connector [36], 3G / GPS antenna connector [37], DIP switches [38] connector, LVDS connector “input” [25], LVDS connector “output ”[26], power and data bus connectors [39], A / V (audio / video)“ input-output ”connector [40], A / V“ input ”connector [41].

On the right end panel (Fig. 7) there are holes for mounting [42], ventilation holes [43], connectors for programming and software updates [44].

Depending on the particular embodiment of the utility model, the arrangement of the ports and / or modules on the printed circuit board of the device may vary.

BRIEF DESCRIPTION OF THE DRAWINGS:

Explanations for the utility model are presented in the following images.

FIG. 1 shows a printed circuit board of the utility model with modules (1-18).

FIG. 2 shows a printed circuit board of a utility model with a video switching and conversion module installed on it (9).

FIG. 3 shows a printed circuit board of a utility model with an RGB \ Digital RGB \ LVDS video processing module installed on it (13) and a navigation system installation module (13a).

FIG. 4 shows a logical scheme for constructing a utility model with modules (1-18) and their interaction with each other, regular vehicle systems and third-party devices connected to them.

FIG. 5 shows the front panel of the housing of the utility model.

FIG. 6 shows the rear panel of the housing of the utility model.

FIG. 7 shows the end (right) panel of the housing of the utility model.

Claims (6)

1. The device for transmitting video information for a vehicle contains one or several printed circuit boards installed in the housing with the video signal switching and conversion module (9), the data bus connection module (11), the RGB \ Digital and RGB \ LVDS video processing module (13), a central control module (18), a video information input interface (1, 2, 6, 7, 10, 14, 15), and the switching and video conversion module has two separate ports of the LVDS format, one for each input "Output", high-performance microcon a controller, a transcoder, an Ethernet transceiver with a wide temperature range, a 4-port managed Ethernet switch with two MAC addresses, a high-speed multichannel SerDes - an APIX2 standard transceiver, a high-speed multichannel Serix APIX3 standard transceiver. 2. The device according to claim 1, characterized in that the switching and converting video signal module (9) includes a high-performance microcontroller [19], Ethernet transceiver with a wide temperature range [20], a 4-port managed Ethernet switch with two MACs -addresses [21], high-speed multichannel SerDes transceiver of APIX3 standard [22], high-speed multichannel SerDes transceiver of APIX2 standard [23], HDMI video processing module with support for HDCP [24], LVDS input connector [25], connector LVDS "exit" [26]. 3. The device according to claim 1, characterized in that the video processing module of the RGB \ Digital RGB \ LVDS formats (13) and the navigation system installation module (13a) include four memory modules with a capacity of 512-2048 megabytes [27], a high-performance microprocessor [28], permanent memory up to 16 gigabytes [29]. 4. The device according to p. 1, characterized in that on the front panel of its case are the slot for SD cards [30], USB connectors [31, 32, 35], DIP switches [33], HDMI connector [34] Wi-Fi / Bluetooth antenna connector [36], 3G / GPS antenna connector [37], DIP switch strip [38], LVDS input connector [25], LVDS output connector [26 ], power and data bus connectors [39], A / V (audio / video) “input-output” connector [40], A / V “input” connector [41], mounting holes are located on the right end panel of the case [42], ventilation holes [43], connectors for software ming and software updates. [44] 5. The device according to p. 2, characterized in that the module switching and conversion of the video signal (9) and its elements made on a separate printed circuit board. 6. The device according to claim 3, characterized in that the video signal processing module of the RGB \ Digital RGB \ LVDS formats (13) and the navigation system installation module (13a) are placed on a separate printed circuit board.

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