RU160961U1 - VIDEO RECORDER "RPL-2MV" - Google Patents

Abstract

1. The RPL-2MV video recorder, which includes a signal processor unit with audio-video data buses and a current parameter multiplexer bus, a random access memory device connected to the processor output data bus, and a rewritable memory device, characterized in that an event recognition unit is introduced into the video recorder and a switch that fills the memory (EEPROM) with only those events that pose a threat of an emergency, the switch being installed between the random access memory property and a rewritable memory device, and the input of the event recognition unit is connected to the output bus of the multiplexer, and the output of the event recognition unit is connected to the control input of the switch. 2. An RPL-2MV video recorder according to claim 1, characterized in that a second rewritable memory device and a second switch are inserted between the random access memory and the second memory device, the control input of the second switch being connected to the second output of the event recognition unit.

Description

RPL-2MV video recorder

The utility model relates to a means of recording information and is intended to control transport safety.

In the description below, abbreviations and notations are used with the following semantic meanings:

RAM - random access memory;

ROM - non-volatile rewritable storage device (such as flash cards);

K - digital stream switch,

A is the number of video recording channels,

B - total bitrate, (bit / s),

C is the amount of information, (bit),

F - frame frequency, (1 / s),

M is the number of audio channels,

P - specific information volume, (bit)

T - recording duration / information update period, (s)

ΔT, Δt - time interval, (s)

ƒ - video frame rate, (1 / s)

m - sound bit rate, (bit / s)

n - parametric bitrate, (bit / s)

one

k is the dimensionless coefficient (number);

t is the time coordinate, (s).

The well-known "Digital Registrar" according to patent No. 53066 dated November 30, 2005. In this technical solution, in order to increase the duration of continuous recording, a ring recording controller and additional flash media are used, the information on which is recorded sequentially, as the previous one is filled. The information update period T in the physical memory ring of the recorder is k * C / B, where C is the information capacity of one flash medium, k is the number of carriers in the memory ring, and B is the density of the information stream. An increase in the duration of saving the record T for a given quality of information (a fixed value of B) is achieved due to an increase in k, i.e. by increasing the number of rewritable flash media in the ring.

Closest to the claimed model is the BestDVR-405 control device (http://gkantecreo.ru/videonablyudenie/videoregistratory/tsifrovye-4-kanalnye-videoregistratory), containing a signal processor, a console with microphones and video cameras, a service information bus, a multiplexer, operational memory device (RAM), rewritable memory device (ROM) based on flash media or a hard magnetic disk. Incoming audio, video and service information is digitized in real time, and digitally recorded in the ROM memory. When the ROM capacity is full, early information is deleted; newly received information is overwritten to the freed space of the ROM. The duration of the information T stored in the memory of the recorder from the moment the recording t1 starts to the moment it is deleted t2 (T = t1-t2) is proportional to the information capacity C of the medium.

The technical result, the achievement of which the claimed solution is directed, is reflected in the purpose of the proposed solution: to increase the time that information is saved from the moment the information was recorded until it is deleted, without increasing the information capacity of the medium.

This technical result is achieved due to the fact that in the video recorder, which includes a signal processor unit with an audio-video data bus and a current multiplexer bus, a random access memory connected to the processor output data bus, and a rewritable memory device, an event recognition unit and a switch, the switch being installed between the random access memory and the rewritable memory, the input of the event recognition unit is connected to the multiplexer output bus, and an output event recognition unit connected to the control input of the switch.

In addition, a second read-only memory and a second switch between the random access memory and the second storage device can be introduced into the inventive device, the control input of the second switch being connected to the second output of the event recognition unit.

The utility model is illustrated graphically, where:

in FIG. 1 shows the structural diagram of the RPL-2MV Video Recorder;

in FIG. 2 shows a structural diagram of the RPL-2MV Video Recorder; with additional switch modules and ROM;

in FIG. 3 shows a block diagram of an event recognition unit.

Examples of the implementation of the inventive device are shown in FIG. 1 (basic version) and FIG. 2 (extended version). In FIG. 3 shows an example implementation of an event recognition unit 5.

These examples are not limited to the possible options for the implementation of the proposed solution.

In the claimed device, the signals from external sensors dispersed throughout the vehicle (speed sensor 1, coordinate sensor 2, pressure sensor in the brake system 3, color recognition recognizer 4), as well as signals from video cameras 5 and microphones 6 of console 7, are processed in a multiplexer 8, are processed by the signal processor 9 and in the form of a sequence of frames are fed to the event recognition unit 10 and to the RAM 11.

Each information frame at the output of the signal processor 9 may contain A * ƒ / F video frames, M * m / F bits of audio information, n / F bits of parametric data (speed, distance to the visualized object, pressure in the brake line and brake cylinders, locomotive data traffic lights broadcast by a CLUB-U, BLOCK or ALSN type locomotive security system), where A is the number of video recording channels, ƒ is the frame rate of the video recording in each channel, F is the frame rate, M is the number of audio recording channels, m is the channel audio bitrate, n is bitre yt parametric data.

The frames formed by the signal processor 9 sequentially fill the RAM cells 11. The RAM 11 performs the function of a temporary buffer, determining the duration of recording information Δt "before the event", i.e. the duration of the "pre-event Δt": Δt = C / (F * P), where P is the information volume of one frame, C is the RAM capacity, Event Recognition Block 10, operating with the data received on it based on the logical analysis of signals according to the "I", " OR "and their combinations (Fig. 3), assesses the level of potential danger of the current mode of travel (exceeding the maximum speed of the locomotive, driving on a forbidding signal of a locomotive traffic light, emergency braking, especially the visual picture and the acoustic situation in the driver’s cab, as well as Local combination of several factors) and generates control signals to switches 12 and 13 (FIG. 2).

When a potentially dangerous event occurs, the event recognition unit 10 generates a control signal at one or two outputs that opens the digital switch 12 and / or switch 13, through which the information is recorded and rewritten from the RAM cells 11 to the memory cells of the ROM 14 and / or ROM 15 (Fig. 2).

Thus, at the actual moment of the occurrence of the event, information is recorded about the pre-event of duration Δt = C (RAM) / B in ROM 7 (ROM 10). In this case, through the switch 12 (switch 13, Fig. 2), overwriting and recording from the active cells of the RAM 11 to the ROM 14 (the ROM 15) takes place. As a result, the information of the ROM 14 (ROM 15) receives both information preceding the event and corresponding to time t, as well as information on the development of the event, over the next time interval, while the control signal from the event recognition unit 10 keeps the recording channel on the ROM 14 open ( ROM 15).

If there is no threat of dangerous events, the earliest time information blocks, which are separated from the current ones by the interval Δt, are updated in RAM 11 by the current information blocks without overwriting them on ROM 14 (ROM 15).

Thus, in ROM 14 (ROM 15) information is recorded that relates exclusively to events that are defined as “emergency” or “potentially dangerous”, with the beginning of recording at the time At before the events. As a result, without increasing the actual capacity of the ROM, the number of events increases, information about which is stored in the internal memory of the recorder (ROM 14 of FIG. 1, FIG. 2) or on an external medium (ROM 15, FIG. 2).

Thus, the claimed technical result is an increase in the time that information is stored from the moment of recording information to its deletion, without increasing the information capacity of the medium due to the introduction of an Event Recognition Unit and a switch (Switches) into the DVR according to the stated formula. The switch, at the command of the event recognition unit, either ensures the passage of information from RAM to the EPROM, or blocks its passage. As a result, the information flow averaged over a long period of time is significantly reduced: the EEPROM is filled only with those events, the signs of which threaten to turn the situation into an emergency. Thus, with the same parameters of the EPROM capacity, the memory space is filling on average more slowly; accordingly, the difference between the coordinate of the current time event and the time coordinate of the earliest recording turns out to be larger, which is prepared for deletion by the procedure of freeing up space to ensure that a new piece of information is written to the EPROM cells.

Claims (2)

1. The RPL-2MV video recorder, which includes a signal processor unit with audio-video data buses and a current parameter multiplexer bus, a random access memory device connected to the processor output data bus, and a rewritable memory device, characterized in that an event recognition unit is introduced into the video recorder and a switch that fills the memory (EEPROM) with only those events that pose a threat of an emergency, the switch being installed between the random access memory property and a rewritable memory device, and the input of the event recognition unit is connected to the output bus of the multiplexer, and the output of the event recognition unit is connected to the control input of the switch. 2. The RPL-2MV video recorder according to claim 1, characterized in that a second rewritable memory device and a second switch are inserted between the random access memory and the second memory device, the control input of the second switch being connected to the second output of the event recognition unit.

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