CN114390347A - Wide-screen media playing rate control system and method - Google Patents
Wide-screen media playing rate control system and method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44213—Monitoring of end-user related data
- H04N21/44218—Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program
Abstract
The invention relates to a wide screen media playing rate control system and a method, wherein the system comprises: real-time distance acquisition device (1): a plurality of groups are distributed side by side and used for collecting the distance between the exhibition person and the media display screen; adaptive media playback rate control device (2): the real-time distance acquisition equipment (1) is in communication connection and used for determining the media playing speed according to the distance between the exhibition person and the media display screen; media playback device (3): the communication is connected with an adaptive media playing speed control device (2), and the adaptive media playing speed control device (2) controls the operation of the media playing device (3) based on the determined media playing speed. Compared with the prior art, the invention has the advantages of clear and full content expression, convenient arrangement, low cost, strong universality and the like, and effectively conforms to the individual requirements of observers with different requirements.
Description
Technical Field
The invention relates to an exhibition hall media playing system, in particular to a system and a method for controlling the playing rate of wide-screen media.
Background
The exhibition hall is an effective medium for transmitting information to the masses, has the advantages of rich information quantity, wide audience and crowd, convenient arrangement and the like, is easily accepted by people and has a long history. For example, a historical museum can accurately and clearly describe historical events in a specific time period; the city planning center can record the development process of the region and show the future development direction; the enterprise exhibition hall is one of important ways for showing self culture and core products as the front of enterprise development. However, because the existing display forms are uniform and are usually performed in a static or mechanical circulation manner, the viewing experience of people is difficult to be considered, and meanwhile, certain defects exist in the aspect of man-machine interaction. Designers often need to make a trade-off between "fast shots" that can reveal the full flow and "slow shots" that can reveal the flow details; details that are played too slowly are difficult for people to see at a glance, while a quick show does not allow interested people to jolt their specific content. This often results in a loss of some potential group concerns and the rate of return from the exhibition hall is somewhat affected.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned drawbacks of the prior art, and to provide an adaptive media playing system based on the position of the exhibitor, which is capable of performing real-time human-computer interaction and flexibly adjusting the playing rate of the displayed content according to the position of the audience.
The purpose of the invention can be realized by the following technical scheme:
a wide-screen media playback rate control system, the system comprising:
real-time distance acquisition equipment: a plurality of groups are distributed side by side and used for collecting the distance between the exhibition person and the media display screen;
adaptive media playback rate control apparatus: the real-time distance acquisition equipment is in communication connection and used for determining the media playing speed according to the distance between the exhibition person and the media display screen;
the media playing device: and the communication connection is carried out with an adaptive media playing rate control device, and the adaptive media playing rate control device controls the operation of the media playing device based on the determined media playing rate.
Preferably, the real-time distance acquisition equipment comprises a plurality of distance sensors and an acquisition end microcontroller, the distance sensors are distributed side by side, and the distance sensors are connected with the acquisition end microcontroller.
Preferably, the distance sensor comprises a laser radar module TFmini Plus.
Preferably, the acquisition-side microcontroller comprises an STM32F 103.
Preferably, the multiple groups of real-time distance acquisition equipment are connected with the self-adaptive media playing rate control equipment through CAN bus communication
Preferably, the adaptive media playing rate control device comprises a control end microcontroller, a level conversion chip and a keyboard and mouse control module, wherein the control end microcontroller is used for determining the media playing rate according to the distance information collected by the real-time distance collection device to generate a corresponding control signal, the level conversion chip is used for performing level conversion on the control signal output by the controller and sending the control signal to the keyboard and mouse control module, and the keyboard and mouse control module is connected with the media playing device to control the media playing device to operate.
Preferably, the control end microcontroller comprises an STM32F 103.
Preferably, the keyboard and mouse control module comprises a KMC3 keyboard and mouse controller.
A method for controlling the playing rate of a wide-screen media is based on a system for controlling the playing rate of the wide-screen media, and comprises the following steps:
s1, when the system is powered on, the self-adaptive media playing speed control device firstly sends a reset signal to the media playing device to enable the playing speed of the player to be in a default state, the playing speed is 1 time of speed, and then waits for the real-time distance acquisition device to send a handshake instruction;
s2, the real-time distance acquisition equipment sends the adaptive media playing rate control equipment to which the adaptive media playing rate control equipment allocates array subscripts for storing distance interval information sent back by the acquisition equipment;
s3, the real-time distance acquisition equipment continuously acquires the distance between the exhibition person and the media display screen, and determines and stores a distance interval according to the distance;
s4, the self-adaptive media playing rate control device synchronously sends a request for obtaining the current distance interval to the real-time distance acquisition devices, receives the current distance intervals of the real-time distance acquisition devices and calculates the current shortest distance interval;
s5, the self-adaptive media playing speed control device determines the current playing speed according to the shortest distance interval;
and S6, controlling the media playing device to operate according to the current playing speed.
Preferably, the distance intervals are set to 4: the interval 1 is that the distance between the exhibition person and the media display screen is 0-2 m; the interval 2 is that the distance between the exhibition person and the media display screen is 2-5 m; the interval 3 is that the distance between the exhibition person and the media display screen is 5-8 m; the distance between the interval 4 and the media display screen and the distance between the audience and the media display screen are more than 8m, and then the current playing speed is controlled in the following mode: when the shortest distance interval is interval 4, the playing speed is 1 time speed; when the shortest distance interval is interval 3, the playing speed is 0.75 times speed; when the shortest distance interval is interval 2, the playing speed is 0.5 times speed; when the shortest distance interval is interval 1, the playing speed is 0.25 times speed.
Compared with the prior art, the invention has the following advantages:
(1) the real-time distance acquisition equipment automatically controls the playing state of the player according to the position of a field viewer without a person in charge for adjusting the playing behavior in the whole exhibition process, and automatically resets after the person walks.
(2) According to the invention, a plurality of real-time distance acquisition devices are connected in parallel and share one adaptive media playing rate control device, and a responsible person in an exhibition hall can dynamically access or remove a certain number of acquisition devices according to the size and the like of the actual exhibition hall so as to meet the requirements of different field sizes. Meanwhile, the exhibition rack is convenient to mount and dismount, and the difficulty of exhibition arrangement is greatly reduced.
(3) The invention can set different play speed and distance relations according to different field display requirements, and can automatically send the configuration to all connected distance acquisition equipment only by changing the parameters of the adaptive media play speed control equipment.
(4) According to the invention, each real-time distance acquisition device works independently, the system can learn the addition and the exit of new devices by self, and off-line management is included, so that off-line operation is not needed when the real-time distance acquisition devices are added and removed on line.
Drawings
FIG. 1 is a schematic diagram of a system for controlling the playback rate of a wide-screen media according to the present invention;
FIG. 2 is a block diagram of a system for controlling the playback rate of a wide-screen media according to the present invention;
fig. 3 is a schematic diagram illustrating a handshaking procedure between the real-time distance acquisition device and the adaptive media playback rate control device.
In the figure, 1 is a real-time distance acquisition device, 2 is a self-adaptive media playing rate control device, 3 is a media playing device, 11 is a distance sensor, 12 is an acquisition end microcontroller, 21 is a control end microcontroller, 22 is a level conversion chip, and 23 is a keyboard and mouse control module.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. Note that the following description of the embodiments is merely a substantial example, and the present invention is not intended to be limited to the application or the use thereof, and is not limited to the following embodiments.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment provides a wide-screen media playing rate control system, which includes a real-time distance acquisition device 1, an adaptive media playing rate control device 2, and a media playing device 3.
1) Real-time distance acquisition device 1: and the plurality of groups are distributed side by side and are used for collecting the distance between the exhibition person and the media display screen. The real-time distance acquisition equipment 1 comprises a plurality of distance sensors 11 and an acquisition end microcontroller 12, wherein the distance sensors 11 are distributed side by side, and the distance sensors 11 are connected with the acquisition end microcontroller 12. Distance sensor 11 includes laser radar module TFmini Plus, and acquisition end microcontroller 12 includes STM32F 103.
The real-time distance acquisition equipment 1 is horizontally arranged at fixed positions such as a wall surface and the like, and is a direct part for man-machine interaction. The device is responsible for reading the data returned by the distance sensor 11 connected with the device and converting the data into distance information, and once the device detects that the distance between the device and the exhibitor changes, the device actively sends the distance information to the adaptive media playing rate control device 2.
The microcontroller serving as a control core selects STM32F103 and a running distance acquisition program, and is responsible for collecting and filtering sensor data. The distance sensor 11 adopts a miniaturized laser radar module TFmini Plus which is based on the principle of time of flight TOF, is used for realizing a stable and accurate distance measurement function, and has the characteristics of small volume, low power consumption and the like; the exchange of the data and the microcontroller is realized by adopting a UART communication protocol.
2) Adaptive media playback rate control apparatus 2: the real-time distance acquisition equipment 1 is connected in a communication mode and used for determining the media playing speed according to the distance between the exhibition person and the media display screen. The plurality of groups of real-time distance acquisition equipment 1 are connected with the self-adaptive media playing rate control equipment 2 through CAN bus communication. The self-adaptive media playing rate control device 2 comprises a control end microcontroller 21, a level conversion chip 22 and a keyboard and mouse control module 23, wherein the control end microcontroller 21 is used for determining the media playing rate according to the distance information collected by the real-time distance collection device 1 to generate a corresponding control signal, the level conversion chip 22 is used for carrying out level conversion on the control signal output by the controller and sending the control signal to the keyboard and mouse control module 23, and the keyboard and mouse control module 23 is connected with the media playing device 3 to control the operation of the keyboard and mouse control module. The control end microcontroller 21 comprises an STM32F103, and the keyboard and mouse control module 23 comprises a KMC3 keyboard and mouse controller. The real-time distance acquisition equipment 1 is connected with the self-adaptive media playing rate control equipment 2 through a serial port.
The self-adaptive media playing rate control device 2 is responsible for processing the distance information sent by the real-time distance acquisition device 1 and is used as a bridge for connecting the real-time distance acquisition device 1 and the media playing device 3; after receiving a new real-time distance from the real-time distance acquisition device 1, the adaptive media playing rate control device 2 transmits a corresponding control instruction to the media playing device 3, so as to realize adjustment control of media playing rate and other behaviors.
STM32F103 is selected as a microcontroller serving as a control core, and a collection and processing program of data returned by the operating distance acquisition equipment is used. The self-adaptive media playing rate control device 2 is connected with the real-time distance acquisition device 1 through a serial port, and has the advantages of convenience in connection, long transmission distance and the like. The adaptive media playback rate control device 2 converts the obtained shortest distance into a control signal and transmits the control signal to the keyboard and mouse controller to control the behavior of the player. The keyboard and mouse control module 23 selects the KMC3, receives the control signal transmitted from the microcontroller through the serial port, converts the control signal into a key signal and outputs the key signal to the media playing device 3, and finally changes the media playing speed of the player.
3) The media playback device 3: the self-adaptive media playing speed control device 2 is connected in communication, and the self-adaptive media playing speed control device 2 controls the media playing device 3 to operate based on the determined media playing speed.
The media playing device 3 is responsible for playing the specific content to be shown in the exhibition hall, and the typical device is a PC. The manager can use the media player to play different display videos according to the requirement, and the video playing speed change of the manager can be automatically adjusted according to the distance between the sensor and the exhibition observer.
In this embodiment 2 distance sensors 11 are placed in the exhibition hall on the same side of the exhibition screen for detecting the position of the observer. Setting four distance intervals of 0-2 m, 2-5 m, 5-8 m and more than 8 m. The distance sensor 11 detects the distance of the observer, and the microcontroller of the real-time distance acquisition system sends the distance information to the adaptive media playing rate control system, and finally the distance information is converted into a control command to change the media playing rate.
4) Communication protocol
The invention designs a protocol format with variable length aiming at CAN bus communication between a self-adaptive media playing rate control device 2 and a real-time distance acquisition device 1, a hexadecimal format is adopted, and a table 1 is a general format of a communication protocol.
Table 1 general format of communication protocol
(1) Response instruction
In order to ensure the reliability of the data, the application layer adopts a request-response mechanism to control the data transmission between the media playing rate control device and the real-time distance acquisition device 1, and takes the last bit of the data as a checksum. The instruction field of the response instruction is 0xFF, the data field is determined by different request instructions, and the sequence number is the same as that of the request instructions; when the responder equipment receives the instructions except the response instruction, corresponding operation is firstly carried out, and then the instructions are sent to the requester after carrying the specified data fields according to different request instructions.
TABLE 2 response instruction Format
(2) Handshake instructions
When the real-time distance acquisition equipment is added, a handshake instruction is actively sent to the self-adaptive media playing rate control equipment 2, and connection is established. The instruction is a first instruction sent by the real-time distance acquisition equipment 1 after being powered on.
Table 3 handshake instruction request format
Table 4 handshake command response format
(3) Query distance interval command
When the system works normally, the real-time distance acquisition equipment 1 corresponds the current shortest distance to a preset distance interval, the adaptive media playing rate control system sends a distance interval inquiry command to the real-time distance acquisition equipment 1 which is connected to read the current corresponding distance interval of a certain real-time distance acquisition system in a circulating manner, the data length is eight bits, the representative distance intervals are sequentially increased from 0 and are sequentially increased, and the representative distance intervals are used as a part of a response command and are transmitted to the adaptive media playing rate control system.
TABLE 5 Inquiry Range Command request Format
TABLE 6 Inquiry Range Command response Format
(4) Query distance instruction
The system still provides instructions to query the real-time distance acquisition device 1 for the current distance for use in installing commissioning or extended functionality. The distance information is sixteen bits and is transmitted in eight high bits and eight low bits, and is correspondingly sent to the adaptive media playing rate control system as part of the response instruction.
Table 7 query distance instruction request format
Table 8 query distance command response format
(5) Setting real-time distance acquisition equipment ID instruction
Each real-time distance collecting device 1 should have a different ID, and the instruction may change the specified real-time distance collecting device ID, and the sender ID in the response instruction to the instruction is replaced with a new ID.
Table 9 sets real-time distance acquisition device ID request instructions
Table 10 sets real-time distance acquisition device ID response instructions
(6) Set distance interval command
The instruction can set a starting and stopping range of a designated interval, the distance is represented by sixteen-bit numbers, the instruction needs to be sent in two frames, an instruction field 0x11 sets the starting distance of the designated interval, and 0x12 sets the ending distance of the designated interval; the adaptive media playing rate control device 2 continuously sends two frames of data and then the real-time distance acquisition device 1 sends a response instruction.
Table 11 sets distance section request command
Table 11 sets distance section response commands
In the exhibition hall 4 distance sensors are placed on the same side of the display screen for detecting the position of the viewer. Setting four distance intervals of 0-2 m, 2-5 m, 5-8 m and more than 8m, wherein the labels are 0, 1, 2 and 3 respectively. The distance sensor detects the distance of an observer, the distance is converted into a corresponding distance zone by a microcontroller of the real-time distance acquisition system, the corresponding distance zone is sent to the self-adaptive media playing rate control system, and finally the distance zone is converted into a control command to change the media playing rate.
Fig. 3 is a schematic diagram of a handshake process between the real-time distance acquisition device 1 and the adaptive media playback rate control device 2.
After the real-time distance acquisition equipment 1 is powered on, information such as the ID of the real-time distance acquisition equipment 1 is firstly sent to data processing equipment through a CAN bus, the data processing equipment internally comprises an ID-array subscript mapping table, and the corresponding relation between the ID of the real-time distance acquisition equipment 1 and the subscript of an array of a distance storage space allocated to the ID is recorded. And when a new acquisition equipment ID is received to be added, the data processing equipment records the ID and establishes a one-to-one correspondence relation with the stored subscripts, wherein the storage table is distributed in sequence from 0 according to the adding sequence of the data acquisition equipment. After the completion, the data processing equipment sends confirmation information, and then the two parties successfully establish connection.
Based on the above-mentioned wide-screen media playing rate control system, this embodiment further provides a method for controlling the playing rate of wide-screen media, where the method specifically includes:
1) when the system is powered on, the adaptive media playing rate control device 2 firstly sends a reset signal to the media playing device 3 through the keyboard and mouse control module, so that the playing rate of the player is in a default state, the playing rate is 1 time of speed, and then waits for the real-time distance acquisition device 1 to send a handshake instruction.
2) The real-time distance acquisition equipment 1 sends a handshake instruction to the adaptive media play rate control equipment 2. As shown in fig. 3, the real-time distance acquisition device 1 with ID 0x32 sends a handshake instruction with an instruction field of 0x00 to the adaptive media playing rate control device 2 with ID 0x00, the adaptive media playing rate control device 2 allocates an array index for the acquisition device to store distance interval information returned by the acquisition device, establishes a corresponding relationship between ID 0x32 and index 0x00 of the real-time distance acquisition device 1, and stores the corresponding relationship between each acquisition device and the index in a Connect structure, where different structures are connected in a single-linked list manner. When the real-time distance acquisition device 1 sends a handshake instruction, the adaptive media play rate control device 2 repeats the above process and adds a new correspondence to the singly linked list for subsequent searching.
3) The real-time distance acquisition equipment 1 continuously acquires data of the distance sensor and converts the distance into a corresponding distance interval to be stored in the memory to serve as response data of a distance interval query instruction. The self-adaptive media playing rate control system requests the current distance interval of each real-time distance acquisition device 1 from a linked list formed by the Connect structure body in sequence according to a handshake sequence and stores the current distance interval into a corresponding array subscript, and after one round of request is completed, the control system calculates the shortest distance interval.
4) The adaptive media playing rate control device 2 adopts a mode of changing the relative playing rate for controlling the playing rate, namely, the adaptive media playing rate control device 2 simultaneously records the playing rate corresponding to the previous wheel distance interval and the playing rate corresponding to the current wheel distance interval and calculates the difference value, and if the difference value is 0, the next round of inquiry is directly started without sending an instruction; if the speed difference exists, a group of speed adjusting commands are sent according to a certain speed adjusting step, so that the playing speed of the media playing device 3 shows a process of gradual acceleration and deceleration, and finally the appointed playing speed is reached.
5) When the exhibition viewer enters a range of 5-8 meters from 8 meters away, the playing speed of the player is changed to 0.75 times speed; when the audience enters the range of 2-5 m, the playing speed of the player is changed to 0.5 times; when the exhibition viewer continues to move into the screen and enters the range within 2 meters, the playing speed of the player is changed to 0.25 times of the speed; when the exhibitor principle screen is displayed, the playing speed of the player is gradually increased to the playing speed value in the corresponding range.
6) When the distance between the exhibition viewer and the screen is more than 8 meters, the detection distance of the distance sensor connected with the real-time distance acquisition equipment 1 reaches the maximum, the self-adaptive media playing speed control equipment 2 sends a reset command to the media playing equipment 3 according to the distance information, and the playing speed returns to the default value of 1 time speed of the initial state.
7) The system continuously loops the above process to realize the function of adjusting the media playing speed in real time according to the distance between the observers.
The self-adaptive media playing rate control system can give consideration to the playing speed of the displayed content, has the advantages of clear and full content expression, convenient arrangement, low cost, strong universality and the like, can clearly convey information content, can be easily arranged and stably operated in various product exhibition halls, and effectively conforms to the individual requirements of observers with different requirements; meanwhile, when the screen width of the exhibition hall is large and the interaction range is wide, the system is limited by the limited number of interfaces of the microcontrollers, the requirement cannot be met only by using a single microcontroller as distance acquisition equipment, and after the comprehensive consideration of system expansibility, portability and the like is combined, a CAN bus is used as a system internal connection scheme. The system and the method are designed so that a responsible person is not required to adjust the playing behavior in the whole exhibition process, the real-time distance acquisition equipment automatically controls the playing state of the player according to the position of a field viewer, and the player is automatically reset after the person walks. A plurality of real-time apart from collection equipment 1 adopts parallel connection to connect and share a self-adaptation media play rate controlgear 2, and the collecting device of certain quantity can be perhaps got rid of according to the dynamic access such as actual exhibition room size to the exhibition room person in charge to satisfy the demand of different place sizes. Meanwhile, the exhibition rack is convenient to mount and dismount, and the difficulty of exhibition arrangement is greatly reduced. The relation between different play rates and distances can be set according to different site display requirements, and the configuration can be automatically issued to all connected distance acquisition equipment only by changing the parameters of the adaptive media play rate control equipment 2. Each real-time distance acquisition device 1 works independently, the system can learn the addition and the exit of new devices by self, off-line management is included, and off-line operation is not needed when the real-time distance acquisition devices 1 are added and removed on line.
The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.
Claims (10)
1. A system for controlling the playback rate of wide-screen media, the system comprising:
real-time distance acquisition device (1): a plurality of groups are distributed side by side and used for collecting the distance between the exhibition person and the media display screen;
adaptive media playback rate control device (2): the real-time distance acquisition equipment (1) is in communication connection and used for determining the media playing speed according to the distance between the exhibition person and the media display screen;
media playback device (3): the communication is connected with an adaptive media playing speed control device (2), and the adaptive media playing speed control device (2) controls the operation of the media playing device (3) based on the determined media playing speed.
2. The system for controlling the playing rate of the wide-screen media according to claim 1, wherein the real-time distance acquisition device (1) comprises a plurality of distance sensors (11) and an acquisition-side microcontroller (12), the distance sensors (11) are distributed side by side, and the distance sensors (11) are connected with the acquisition-side microcontroller (12).
3. The widescreen media playback rate control system of claim 2, wherein said range sensor (11) comprises a lidar module TFmini Plus.
4. The widescreen media playback rate control system of claim 2, wherein said acquisition side microcontroller (12) comprises STM32F 103.
5. The wide-screen media playing rate control system according to claim 1, wherein the plurality of sets of real-time distance acquisition devices (1) are communicatively connected to the adaptive media playing rate control device (2) through a CAN bus.
6. The widescreen media play rate control system according to claim 1, wherein the adaptive media play rate control device (2) comprises a control end microcontroller (21), a level conversion chip (22) and a keyboard and mouse control module (23), the control end microcontroller (21) is used for determining the media play rate according to the distance information collected by the real-time distance collection device (1) to generate a corresponding control signal, the level conversion chip (22) is used for performing level conversion on the control signal output by the controller and sending the control signal to the keyboard and mouse control module (23), and the keyboard and mouse control module (23) is connected with the media play device (3) to control the operation thereof.
7. The widescreen media play rate control system of claim 6, wherein said control side microcontroller (21) comprises an STM32F 103.
8. The widescreen media playback rate control system of claim 6, wherein the keyboard and mouse control module (23) comprises a KMC3 keyboard and mouse controller.
9. A method for controlling the playing rate of a wide-screen media, the method being based on the system for controlling the playing rate of a wide-screen media as claimed in any one of claims 1 to 8, the method comprising:
s1, when the system is powered on, the self-adaptive media playing rate control device (2) firstly sends a reset signal to the media playing device (3) to enable the playing rate of the player to be in a default state, the playing rate is 1 time of speed, and then waits for the real-time distance acquisition device (1) to send a handshake instruction;
s2, the real-time distance acquisition equipment (1) sends the adaptive media playing rate control equipment (2), and the adaptive media playing rate control equipment (2) allocates array subscripts for the acquisition equipment to be used for storing distance interval information sent back by the acquisition equipment;
s3, the real-time distance acquisition equipment (1) continuously acquires the distance between the exhibition person and the media display screen, and determines and stores a distance interval according to the distance;
s4, the self-adaptive media playing rate control device (2) synchronously sends a request for obtaining the current distance interval to the real-time distance acquisition devices (1), receives the current distance interval of each real-time distance acquisition device (1), and calculates the current shortest distance interval;
s5, the self-adaptive media playing speed control device (2) determines the current playing speed according to the shortest distance interval;
and S6, controlling the operation of the media playing device (3) according to the current playing speed.
10. The method of claim 9, wherein the distance interval is set to 4: the interval 1 is that the distance between the exhibition person and the media display screen is 0-2 m; the interval 2 is that the distance between the exhibition person and the media display screen is 2-5 m; the interval 3 is that the distance between the exhibition person and the media display screen is 5-8 m; the distance between the interval 4 and the media display screen and the distance between the audience and the media display screen are more than 8m, and then the current playing speed is controlled in the following mode: when the shortest distance interval is interval 4, the playing speed is 1 time speed; when the shortest distance interval is interval 3, the playing speed is 0.75 times speed; when the shortest distance interval is interval 2, the playing speed is 0.5 times speed; when the shortest distance interval is interval 1, the playing speed is 0.25 times speed.
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| CN202111480706.9A CN114390347B (en) | 2021-12-06 | Control method of wide-screen media playing speed control system |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1882072A (en) * | 2006-03-10 | 2006-12-20 | 中山大学 | System and method for making audio media broadcast terminal automatic interaction with user |
| US20070173699A1 (en) * | 2006-01-21 | 2007-07-26 | Honeywell International Inc. | Method and system for user sensitive pacing during rapid serial visual presentation |
| US20100250766A1 (en) * | 2009-03-31 | 2010-09-30 | Canon Kabushiki Kaisha | Network streaming of a video media from a media server to a media client |
| US20150264432A1 (en) * | 2013-07-30 | 2015-09-17 | Aliphcom | Selecting and presenting media programs and user states based on user states |
| US20160018983A1 (en) * | 2014-07-21 | 2016-01-21 | International Business Machines Corporation | Touch screen video scrolling |
| CN107197323A (en) * | 2017-05-08 | 2017-09-22 | 上海工程技术大学 | A kind of network video-on-demand server and its application based on DVFS |
| CN108446024A (en) * | 2018-03-21 | 2018-08-24 | 广东欧珀移动通信有限公司 | Method for playing music and Related product |
| US10282695B1 (en) * | 2014-03-21 | 2019-05-07 | Amazon Technologies, Inc. | Color adaptable inventory management user interface |
| CN110337022A (en) * | 2019-06-11 | 2019-10-15 | 福建天泉教育科技有限公司 | Video variable playback method based on attention rate, storage medium |
| CN111061412A (en) * | 2019-10-31 | 2020-04-24 | 北京奇艺世纪科技有限公司 | Playing control method and device for multimedia resources |
| CN111988363A (en) * | 2020-07-24 | 2020-11-24 | 广州宏远传媒信息科技有限公司 | Media release management system suitable for bus |
| CN216751968U (en) * | 2021-12-06 | 2022-06-14 | 上海工艺美术职业学院 | Self-adaptive media playing system based on position of exhibition observer |
| CN216819990U (en) * | 2021-12-06 | 2022-06-24 | 上海工程技术大学 | Wide screen media playing rate control system |
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070173699A1 (en) * | 2006-01-21 | 2007-07-26 | Honeywell International Inc. | Method and system for user sensitive pacing during rapid serial visual presentation |
| CN1882072A (en) * | 2006-03-10 | 2006-12-20 | 中山大学 | System and method for making audio media broadcast terminal automatic interaction with user |
| US20100250766A1 (en) * | 2009-03-31 | 2010-09-30 | Canon Kabushiki Kaisha | Network streaming of a video media from a media server to a media client |
| US20150264432A1 (en) * | 2013-07-30 | 2015-09-17 | Aliphcom | Selecting and presenting media programs and user states based on user states |
| US10282695B1 (en) * | 2014-03-21 | 2019-05-07 | Amazon Technologies, Inc. | Color adaptable inventory management user interface |
| US20160018983A1 (en) * | 2014-07-21 | 2016-01-21 | International Business Machines Corporation | Touch screen video scrolling |
| CN107197323A (en) * | 2017-05-08 | 2017-09-22 | 上海工程技术大学 | A kind of network video-on-demand server and its application based on DVFS |
| CN108446024A (en) * | 2018-03-21 | 2018-08-24 | 广东欧珀移动通信有限公司 | Method for playing music and Related product |
| CN110337022A (en) * | 2019-06-11 | 2019-10-15 | 福建天泉教育科技有限公司 | Video variable playback method based on attention rate, storage medium |
| CN111061412A (en) * | 2019-10-31 | 2020-04-24 | 北京奇艺世纪科技有限公司 | Playing control method and device for multimedia resources |
| CN111988363A (en) * | 2020-07-24 | 2020-11-24 | 广州宏远传媒信息科技有限公司 | Media release management system suitable for bus |
| CN216751968U (en) * | 2021-12-06 | 2022-06-14 | 上海工艺美术职业学院 | Self-adaptive media playing system based on position of exhibition observer |
| CN216819990U (en) * | 2021-12-06 | 2022-06-24 | 上海工程技术大学 | Wide screen media playing rate control system |
Non-Patent Citations (3)
| Title |
|---|
| W. CHEN 等: "Design and Evaluation of a Distance-Driven User Interface for Asynchronous Collaborative Exhibit Browsing in an Augmented Reality Museum", IEEE ACCESS, vol. 9, 14 May 2021 (2021-05-14), pages 73948 - 73962, XP011856745, DOI: 10.1109/ACCESS.2021.3080286 * |
| 史骞: "LED大屏远程播出与监测", 西部广播电视, no. 2018, 25 September 2018 (2018-09-25), pages 183 * |
| 熊丽荣;尤日晶;金鑫;: "基于传感器的移动流媒体码率控制方法", 计算机科学, no. 10, 15 October 2018 (2018-10-15) * |
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