RU136942U1 - SWITCHING DEVICE - Google Patents

Abstract

1. A switching device for connecting video devices to a video line of a vehicle equipped with a head unit (1), comprising a video signal switch (3) having at least one video output (8) configured to connect to a video input (11) of the head unit (1) vehicle, and at least two video inputs (9, 10), configured to connect through them a rear view camera (5) and at least one video device (7) to the vehicle video line; moreover, the video signal switch (3) is configured to connect to the vehicle reverse sensor (4) to the signal line (12) and to automatically switch the video signal from the rear view camera (5) to the specified at least one video output (8) upon receipt of a reverse gear signal switch (3) of a vehicle, characterized in that the switching device comprises a video signal switch (2) configured to connect to a video signal switch (3) and with the possibility of odachi it gating signal to switch video signals to be transmitted to the head unit (1) .2. The device according to claim 1, containing a CAN module (6) (Controller Area Network) connected to the switch (3). 3. The device according to claim 1 or 2, in which the switch (2) of the video signals is made in the form of a wireless remote control.

Description

FIELD OF TECHNOLOGY

The utility model relates to switching devices for automobiles and other vehicles, in particular to switching devices for connecting various video devices and switching their signals in vehicles, both having a regularly organized video line and without it.

BACKGROUND

Modern vehicles contain a variety of multimedia devices, including video devices. To ensure safety and convenience, some cars, for example, include standard video devices that improve the visibility of the space surrounding the car and thereby increase the safety of maneuvering. Various multifunctional devices are also known, which allow, among other things, to connect additional audio and video devices to the car system, including players, telephones, TV tuners, etc., and to control the transmitted signals.

Nevertheless, the problem of integrating all connected devices into a single system and ensuring centralized control of their video signals remains an urgent problem.

To solve this problem allows the system for the integration of multimedia devices, disclosed in RU 2450444.

The specified system comprises a video signal switch having at least one video output and at least two video inputs, and a video signal switch configured to connect to the switch and with the possibility of applying to the switch (3) a switching signal for switching video signals. The system according to RU 2450444 provides the exchange of data and video signals between the car video system and a third-party video device, as well as switching control of these signals. However, the disclosed system does not solve such an important problem as ensuring the safety of maneuvering, since when the reverse gear is switched on, the video output of the switch may receive a different video signal different from the signal from the rear view camera, and manual switching is necessary to obtain the image from the rear view camera video signals. In this case, if the driver does not switch the video signals during, the safety of maneuvering will be reduced. Thus, increasing the safety of maneuvering when using switching devices in a vehicle remains relevant.

An example of a device that allows for safe maneuvering by displaying an image from a rear view camera on a display is the on-board system disclosed in patent RU 2451609, which can be considered the closest analogue of the claimed switching device. The specified system contains a switching device consisting of a switch (8) having two video outputs, one of which is connected to the video input (11) of the electronic unit (1) of the specified system, and the second is connected to the digital information storage unit, to which three more cameras are also connected (5, 6, 7); and one video input configured to connect a rear view camera (4) through it. The switch (3) is connected to the output of the vehicle’s reverse gear sensor with the ability to automatically switch the video signal from the rear view camera (4) to the indicated video input of the electronic unit (1) when the vehicle’s reverse gear signal is received on the switch (3). If necessary, information from cameras recorded in block 9 for storing digital information can be extracted from it and displayed on the display. However, RU 2451609 does not disclose the connection of other video devices, except for a rear view camera, for switching video signals received from these video devices in real time, which limits the use of video devices in a vehicle.

Thus, in the field of switching devices for vehicles, the task is to create a switching device that would increase the number of video inputs for connected video devices, provide the ability to switch between the video signals of these devices to supply these signals to an existing (standard) vehicle head unit, and while it is time to ensure the priority of the video signal of the rear view camera when reversing.

DISCLOSURE OF A USEFUL MODEL

The switching device according to this utility model is designed to work with the head unit of the vehicle and allows you to connect additional video devices to the vehicle video line with the subsequent transmission of a signal from them to the head unit.

The objective of the proposed utility model is the creation of a switching device for connecting video devices to the video line of a vehicle equipped with a head unit. The utility model is aimed at creating a switching device capable of increasing the number of connected additional video devices to the vehicle video line, providing the ability to switch between the signals of these additional video devices, as well as ensuring high safety of maneuvering the vehicle. The switching device must be made with the possibility of direct connection to the head unit and the standard signal line of the transport device, as well as provide the ability to switch existing video signals.

This problem is solved due to the fact that, according to the present utility model, in a switching device for connecting video devices to a video line of a vehicle equipped with a head unit, comprising

a video switch that has at least one video output configured to connect to a video input of the vehicle head unit, and at least two video inputs configured to connect a rearview camera and at least one video device to the vehicle video line through them, which is connected to the signal line of the vehicle’s reverse sensor and which is configured to automatically switch the video signal from the rear view camera to the specified at least one video output upon receipt of the reverse gear of the vehicle,

additionally introduced a video signal switch configured to connect to the switch and with the possibility of applying to the switch a switching signal for switching video signals.

Thus, the switching device according to this utility model allows to achieve a technical result consisting in increasing the number of video inputs for additional video devices connected to the vehicle with the possibility of switching between signals from these video devices while maintaining the priority of the video signal from the rear view camera.

In one of the preferred embodiments, the switching device comprises a CAN module (read-transmit module of the CAN network) connected to the switch. This allows us to solve this problem in vehicles with a CAN network (Controller Area Network - an industrial network standard, focused on combining various actuators and sensors into a single network).

According to this utility model, the switching device enables the integration of all video devices in the vehicle into a single video line together with the head unit, which minimizes the number of connections and implements a single video signal control scheme, which additionally provides increased safety for maneuvering a vehicle, for example, a car, by ensuring the priority of video signals from rear view cameras.

The presence of a switching device according to this utility model of several video inputs (at least two) allows you to implement the connection in the vehicle of several video devices. Performing video inputs of the switch with the possibility of connecting a rear view camera through them, connecting the switch to the signal line of the vehicle’s reverse gear sensor and performing it with the ability to automatically switch the video signal from the rear view camera to the specified at least one video output when the signal indicates reverse gear the vehicle ensures the preservation of the priority of the video signal from the rear view camera when the reverse gear of the vehicle, which in turn improves safety and ease of maneuvering. The presence in the claimed switching device of a video signal switch configured to connect to the switch and supply a switching signal to the switch to switch the video signals allows for the implementation of a single video control circuit for devices connected in the vehicle and the ability to switch between the video signals of the connected devices. Thus, the totality of all the claimed essential features of the switching device ensures the integration of vehicle-connected video devices into a single video line with a single video signal management circuit that provides safety and ease of maneuvering and allows to achieve a technical result in the form of ensuring the priority of the video signal from the rear view camera when reverse gear is engaged vehicle.

For vehicles with a CAN network, this technical result is achieved due to the presence of an additional CAN module in the claimed switching device, which enables the claimed switching device to be connected to the vehicle’s CAN network and signaling the reverse gear in the vehicle with the commutator CAN network. This ensures the priority of the video signal from the rear view camera, which allows you to implement a video control system that provides increased safety when maneuvering a vehicle.

In one embodiment, the video switch is in the form of a wireless remote control.

The proposed switching device compares favorably with the system disclosed in RU 2450444 in that it allows you to maintain the priority of the video signal of the rear view camera when you engage reverse gear of the vehicle due to the fact that the switch is connected to the signal line of the vehicle’s reverse sensor and is configured to automatically switch the video signal from rear view cameras to the specified at least one video output upon receipt of a signal to enable the reverse gear of the vehicle a. Thus, even while the head unit is transmitting signals from some other device when reverse gear is engaged on a gearbox (hereinafter referred to as the gearbox) equipped with a reverse gear, the switching device automatically switches the signal from the rear view camera to the video input of the head unit, providing priority of its video signals and significantly increasing the safety of maneuvering.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows an example of a standard vehicle video line diagram.

In FIG. 2 shows an example of a connection circuit of a switching device according to the present utility model in a vehicle having a standard video line.

IMPLEMENTATION OF A USEFUL MODEL

According to a preferred embodiment of the present utility model (Fig. 2), the switching device for connecting video devices to the vehicle video line includes a switch (3) having at least one video output (8) configured to connect to the video input (11) of the head unit ( 1) a vehicle, and at least two video inputs (9, 10), configured to connect rear-view cameras (5) and at least one video device (7) to the vehicle video line through them. The switching device also includes a switch (2) of video signals, configured to connect to a switch (3) and with the possibility of applying to the switch (3) a switching signal for switching video signals so that the video signals are transmitted from the video output (8) of the switch (3) to the video input ( 11) the head unit (1) and, accordingly, can be displayed.

In FIG. 1 shows an example of a standard scheme of a video line of a vehicle equipped with a standard rear-view video camera (5). The head unit (1) is connected to the video camera (5) via the video line (13) and to the vehicle reverse sensor (4) using the control signal line (12) (or CAN bus if it is present in the vehicle).

The signal line (12) to the head unit (1) receives a signal from the vehicle reverse sensor (4), which carries information on the reverse gear. The specified signal can be supplied either directly from the vehicle reverse sensor (4) in the form of a potential, or in the form of a digital code from the CAN network if it is present in the vehicle.

In FIG. 2 shows an example of a connection circuit of a switching device according to the present utility model to the circuit shown in FIG. 1. Elements, preferably contained in a switching device according to the present utility model, are in a dashed outline (see FIG. 2). In FIG. 2, it can be seen that the device is connected to the gap of the standard video line (13) to form the video lines 13a and 13b, as well as to the gap of the control signal line (12) to form the control signal lines 12a and 12b. The video switch (3) is configured to connect to the video input (11) of the head unit (1) of the vehicle and has at least two video inputs (9, 10) configured to connect rear-view cameras (5) and at least at least one video device (7) to the vehicle video line. In addition, the switch (3) is connected to the signal line (12) of the vehicle’s reverse gear sensor (4) and is configured to automatically switch the video signal from the rear view camera (5) to the specified at least one video output (8) upon receipt of the switch (3) vehicle reverse gear signal. The device also includes a switch (2) of video signals, configured to connect to a switch (3) and with the possibility of applying to the switch (3) a switching signal for switching video signals.

If there is a CAN network in the vehicle, the switching device according to the present utility model may further comprise a CAN module (6) connected between the CAN bus 12a and the switch (3). The CAN module is used to connect the switching device to the vehicle’s CAN network and to provide a signal to the commutator (3) to indicate reverse gear in vehicles with a CAN network.

Thus, the video input (9) and video output (8) of the switch (3) are formed in the gap of the standard video line of the vehicle, passing between the rear view camera and the head unit, and provide end-to-end signal transmission from the rear view camera (5) when reverse gear is engaged and the corresponding signal from the vehicle reverse sensor (4) or from the CAN module (6) to the switch (3).

The claimed switching device operates as follows. Upon receipt of a signal to reverse switch from the vehicle reverse gear sensor (4) or from the CAN module (6) to the switch (3), the switch (3) automatically switches to the video output (8) a signal from the rear view camera (5), which then fed to the video input (11) of the head unit (1). Thus, the head unit (1) switches to the signal display mode from the rear view camera (5) automatically.

In the absence of a reverse gear signal, using the video signal switch (2), you can switch the video signal from at least one additional video device (7) to the video input (11) of the head unit (1).

Preferably, the switch (3) is conveniently located near the head unit (1).

In another case, in vehicles that are not equipped with a full-time video camera, instead of the rear view camera (5), any other video device can be connected, and the switching device according to this utility model performs the functions of switching signals from this other video device and additional video device (7) similar to that described above principle.

It is obvious for a specialist that the disclosed utility model is not limited to the given implementation options and that its modifications are possible without going beyond the limits limited by the given utility model formula

Claims (3)

1. A switching device for connecting video devices to a video line of a vehicle equipped with a head unit (1), comprising a video signal switch (3) having at least one video output (8) configured to connect to a video input (11) of the head unit (1) vehicle, and at least two video inputs (9, 10), configured to connect through them a rear view camera (5) and at least one video device (7) to the vehicle video line; moreover, the video signal switch (3) is configured to connect to the vehicle reverse sensor (4) to the signal line (12) and to automatically switch the video signal from the rear view camera (5) to the specified at least one video output (8) upon receipt of vehicle reverse gear signal switch (3), characterized in that the switching device includes a switch (2) of video signals, configured to connect to a switch (3) of video signals and with the possibility of applying to it a switching signal for switching video signals intended for transmission to the head unit (1). 2. The device according to claim 1, containing a CAN module (6) (Controller Area Network) connected to the switch (3). 3. The device according to claim 1 or 2, in which the switch (2) of the video signals is made in the form of a wireless remote control.

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