CN111385654B - Intelligent television analog quantity parameter control method based on middleware - Google Patents
Intelligent television analog quantity parameter control method based on middleware Download PDFInfo
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- CN111385654B CN111385654B CN202010144041.3A CN202010144041A CN111385654B CN 111385654 B CN111385654 B CN 111385654B CN 202010144041 A CN202010144041 A CN 202010144041A CN 111385654 B CN111385654 B CN 111385654B
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- analog
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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
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4433—Implementing client middleware, e.g. Multimedia Home Platform [MHP]
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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
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4854—End-user interface for client configuration for modifying image parameters, e.g. image brightness, contrast
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Software Systems (AREA)
- Feedback Control In General (AREA)
Abstract
The invention discloses a middleware-based intelligent television analog parameter control method, which comprises the following steps of: establishing a state detection thread on a kernel driver layer, and performing cycle detection on states at regular intervals to sequentially detect state changes of a plurality of analog quantities of the smart television; establishing a processing thread in a middleware layer, and detecting the change of information and analog quantity parameters of a device driving module at regular time by reading data of a kernel driver layer; when the processing thread inquires the state of the analog quantity and the parameter change, entering an automatic dynamic compensation analog quantity process for changing the analog quantity parameter output; the invention solves the problem that the device driving module in the intelligent television can not be directly controlled when the compensation requirement exists.
Description
Technical Field
The invention relates to the technical field of intelligent embedded software, in particular to a middleware-based intelligent television analog quantity parameter control method.
Background
The analog components of a television set, such as contrast and brightness, are currently implemented in the middleware layer. If the device driving module detects that the analog quantity of the television needs dynamic compensation, the module cannot directly control the analog quantity, and then compensation control cannot be carried out.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a method for controlling the analog quantity parameters of the intelligent television based on the middleware, and the method solves the problem that direct control cannot be performed when a device driving module in the intelligent television has a compensation requirement.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for controlling an analog quantity parameter of a smart television based on middleware comprises the following steps:
step 2, establishing a processing thread in a middleware layer, and detecting the change of information and analog quantity parameters of a device driving module at regular time by reading data of a kernel driver layer;
step 3, entering an automatic dynamic compensation analog quantity process for changing the analog quantity parameter output after the processing thread inquires the state of the analog quantity and the parameter change; the method specifically comprises the following steps:
step 3.1, the query state and parameters have been changed;
step 3.2, if the current compensation value p1 is less than the dynamic compensation set value p, adding one to the compensation value p1, and otherwise, subtracting one from the compensation value p;
3.3, calculating a final control value according to the compensation value p1, the set value U1 of the user backed up in the original analog parameter control process and the median U50, and controlling to output the compensation analog; and according to different analog quantities, the time is delayed for different times and the process returns to the step 3.2, and the steps 3.2 to 3.3 are executed in a loop until the current compensation value p1 is equal to the dynamic compensation set value p.
As a preferred embodiment, the step 3.3 specifically comprises the following steps:
step 3.3.1, calculating a maximum value Upmax of the user compensation setting according to the dynamic compensation setting value p, wherein Upmax is U50+ p;
step 3.3.2, outputting the compensation analog quantity Uout, wherein Uout is p1+ U1; if Uout > Upmax, the analog quantity output is Upmax; otherwise, the analog output is p1+ U1.
As another preferred embodiment, the original analog parameter control process specifically includes the following steps:
(1) calculating a maximum value Upmax set by a user in a compensation mode according to the dynamic compensation setting value p, wherein the Upmax is U50+ p;
(2) setting value U1 of the backup user;
(3) if U1> Upmax, the analog output is U1;
(4) if p1+ U1> Upmax, the analog output equals Upmax;
(5) the other analog outputs p1+ U1.
As another preferred embodiment, in step 2, the processing thread established by the middleware layer reads data of the kernel driver layer through the ioctl.
The invention has the beneficial effects that: the invention can acquire the detection change obtained by the equipment drive and perfect the control analog quantity dynamic compensation value according to the requirement.
Drawings
FIG. 1 is a software implementation framework diagram of an embodiment of the present invention;
FIG. 2 is a block diagram illustrating a state change process in a state detection thread according to an embodiment of the present invention;
FIG. 3 is a control block diagram of compensation analog in a processing thread according to an embodiment of the present invention;
FIG. 4 is a control block diagram of UI control analog in an embodiment of the present invention;
FIG. 5 is a graph of input and output curves of an analog quantity in an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in FIG. 1, a method for controlling the analog quantity parameter of the intelligent television based on the middleware is provided, which comprises the steps of establishing a processing thread at the middleware layer, inquiring the information of the equipment driving module and the analog quantity compensation data at regular time, comparing the compensation value with the set value when a change is found, and slowly adding or subtracting, for example, adding or subtracting one according to the time (100 ms-1000 ms) with different analog quantity intervals. The final set value is output by an algorithm control of the original user value and the median and offset values.
In this embodiment, the communication between the middleware layer and the device driver module is completed through an ioctrl interface, so as to query and set data.
Specifically, as shown in fig. 1, in this embodiment, a switch of the DBC is added to the application layer to dynamically compensate the maximum setting parameter. The dynamic compensation maximum is set to the middleware at system initialization. Other parameters such as the DBC switch and user analog initialization are also set, allowing the user to set.
The middleware layer separately stores the user analog quantity set by the user layer, and also stores the median U50 of the curve in different modes and the maximum value pmax of the dynamic compensation for use in the algorithm for calculating the analog quantity.
A processing thread is newly established in a middleware layer, detection information of an equipment driving module is inquired at regular intervals of 500ms, and the communication mode is that data of a kernel driver layer is read through ioctl.
In the embodiment, a state detection thread is built at a kernel driver layer, the thread is a 20ms loop detection state, a plurality of state changes can be detected sequentially, for example, after ST1 is changed, CntSt 1 counting is carried out, and after one Gatet 1 is accumulated, ST1 change information is given. As shown in FIG. 2, ST1 may represent brightness, ST2 may represent contrast, etc.
And after the query state and the parameters are changed, the processing thread enters a process of changing the parameters.
As shown in fig. 3, the process of changing the parameter according to the compensation value in the present embodiment is as follows:
(1) calculating a maximum value Upmax set by a user in a compensation mode according to the dynamic compensation setting value p, wherein the Upmax is U50+ p;
(2) the query state and parameters (dynamic compensation set point p) have changed;
(3) the current compensation value p1 is less than the dynamic compensation set value p, the compensation value p1 is added with one, otherwise, the value is subtracted with one;
(4) and (3) an algorithm for outputting a compensation analog quantity: uout p1+ U1; if Uout < Upmax, the analog output is p1+ U1; otherwise, the analog quantity is not output;
(5) delaying for different times (100 ms-1000 ms) according to different analog quantities;
(6) loop to (3) until the current compensation value p1 becomes the dynamic compensation set value p.
As shown in fig. 4, the method for controlling the original analog quantity is modified in the middleware layer according to the present embodiment, and the flow is as follows:
(1) calculating a maximum value Upmax set by a user in a compensation mode according to the dynamic compensation setting value p, wherein Upmax is U50+ pmax;
(2) setting value U1 of the backup user;
(3) if U1> Upmax, the analog output is U1;
(4) if p1+ U1> Upmax, the analog quantity output is Upmax;
(5) the other analog outputs p1+ U1.
The final input/output curve graph of the analog quantity is shown in fig. 5, and in fig. 5, the delta value is a real-time control value calculated by an algorithm; the embodiment has two control modes: the control method of automatic dynamic compensation analog quantity also includes user UI control mode; the action of backing up the user initial value is added in the control of the original analog quantity, and the dynamic analog quantity reads the backup value and then controls the dynamic analog quantity, aiming at ensuring the independence of the original control.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. A method for controlling an analog quantity parameter of a smart television based on middleware is characterized by comprising the following steps:
step 1, establishing a state detection thread on a kernel driver layer, and performing cycle detection on states at regular intervals to sequentially detect state changes of a plurality of analog quantities of the smart television;
step 2, establishing a processing thread in a middleware layer, and detecting the change of information and analog quantity parameters of a device driving module at regular time by reading data of a kernel driver layer;
step 3, entering an automatic dynamic compensation analog quantity process for changing the analog quantity parameter output after the processing thread inquires the state of the analog quantity and the parameter change; the method specifically comprises the following steps:
step 3.1, the query state and parameters have been changed;
step 3.2, if the current compensation value p1 is less than the dynamic compensation set value p, adding one to the compensation value p1, and otherwise, subtracting one from the compensation value p;
3.3, calculating a final control value according to the compensation value p1, the set value U1 of the user backed up in the original analog parameter control process and the median U50, and controlling to output the compensation analog; and according to different analog quantities, the time is delayed for different times and the process returns to the step 3.2, and the steps 3.2 to 3.3 are executed in a loop until the current compensation value p1 is equal to the dynamic compensation set value p.
2. The middleware-based intelligent television analog parameter control method according to claim 1, wherein the step 3.3 specifically comprises the following steps:
step 3.3.1, calculating a maximum value Upmax of the user compensation setting according to the dynamic compensation setting value p, wherein Upmax is U50+ p;
step 3.3.2, outputting the compensation analog quantity Uout, wherein Uout is p1+ U1; if Uout < Upmax, the analog output is p1+ U1; otherwise, the analog quantity is not output.
3. The intelligent television analog parameter control method based on the middleware as claimed in claim 2, wherein the original analog parameter control process specifically comprises the following steps:
(1) calculating a maximum value Upmax set by a user in a compensation mode according to the dynamic compensation maximum value pmax, wherein Upmax is U50+ pmax;
(2) setting value U1 of the backup user;
(3) if U1> Upmax, the analog output is U1;
(4) if p1+ U1> Upmax, the analog output equals Upmax;
(5) the other analog outputs p1+ U1.
4. The intelligent television analog quantity parameter control method based on the middleware of claim 1, wherein in the step 2, the processing thread established by the middleware layer reads the data of the kernel driver layer through ioctl.
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