How to enter the factory mode and what is the factory mode?

1.OSD (On Screen Display) is a screen window design that implements human-machine interface in display products.

2.User mode: The user of the monitor can control the functions of the monitor or obtain information through the OSD interface with open permission.

3.Factory mode: In order to facilitate the production line production of the display, the OSD interface specially designed for the production line to adjust some important and sensitive parameters of the display, the adjusted value does not want to be changed by the user, this operating environment factory is usually entered by the combination of keys (hot key) to enter, ordinary users do not know the trick is not easy to enter this operating environment.

Hello, glad to answer your questions.

First of all, the factory pattern is one of the most commonly used design patterns in software development。This type of design pattern is a creative pattern that provides an optimal way to create objects.

In factory mode, we don't expose the creation logic to the client when we create an objectAnd by using a common interface to point to the newly created object.

The main intent of the factory pattern is to define an interface for creating objectsLet its subclasses decide for themselves which factory class to instantiate, and the factory pattern delays its creation process until the subclass progresses.

Case 1: You need a car that can be picked up directly from the factory, regardless of how the car is made and what is implemented in the car. 2. Hibernate only needs to change the dialect and driver to change the database.

Pros:1. If a caller wants to create an object, all they need to know is its name. 2. High scalability, if you want to add a product, you only need to expand a factory class.

3. Shielding the specific implementation of the product, the caller only cares about the interface of the product.

Disadvantages: Every time a product is added, a concrete class and object implementation factory need to be added, which multiplies the number of classes in the system, increases the complexity of the system to a certain extent, and also increases the dependence of the specific classes of the system. That's not a good thing.

Case 2: Logger: Records may be logged to local hard disks, system events, remote servers, etcUsers can choose where to log logs.

2. Database access, when the user does not know which type of database the system uses in the end, and the database may change. 3. Designing a framework for connecting to the server requires three protocols"pop3"、"imap"、"http", you can use these three as product classes to implement an interface together.

Note: As a creation class pattern, you can use the Factory Method pattern anywhere you need to generate complex objects. One thing to note is that complex objects are suitable for factory mode, while simple objects, especially those that can be created with new, do not need to use factory mode.

If you use the factory pattern, you need to introduce a factory class, which will increase the complexity of the system.

Hope it helps, thank you!

1.In the power-off state, press and hold the power button and the side volume button down button at the same time to turn on the phone.

2.Long press the side volume button down for about 15 seconds until the phone screen shows the android icon and the phone enters recovery mode.

3.Tap the bottom right corner of your phone's screen and a menu option will appear.

4.Press the side volume button to display "Wipe Data Factory Reset", then tap OK in the lower left corner of the screen, press the side volume button down button to display "yes--delete all user data" on the confirmation screen, and then tap OK at the bottom of the screen to erase all user data stored on the phone.

5.Press the side volume button down button to display "WipeCache Partition" in the inverted color, and then tap OK in the bottom left corner of the screen to clear the cache partition in your phone.

6.Press the side volume button and the lower button to display "Reboot System Now", and then tap OK in the lower left corner of the screen to restart the phone system.

The factory method pattern is a commonly used object-creating design pattern, the core spirit of this pattern is to encapsulate the unchanged parts of the class, extract the personalized and fickle parts into independent classes, and achieve the purpose of decoupling, reusing and facilitating later maintenance and expansion through dependency injection. Its core structure has four characters, which are the abstract factory; specific factories; abstract products; Specific products. The meaning of the factory method pattern is to define a factory interface for creating product objects, postponing the actual creation work to a subclass.

The core factory class is no longer responsible for the creation of the product, so the core class becomes an abstract factory role, only responsible for the interfaces that the concrete factory subclasses must implement, so that the benefit of further abstraction is that the factory method pattern allows the system to introduce new products without modifying the specific factory role. The factory method pattern is a derivative of the simple factory pattern, which solves many of the problems of the simple factory pattern. First fully realized'Open-closed principle'to be scalable.

Second, more complex hierarchies can be applied to situations where product results are complex. The Factory Method pattern abstracts the Simple Factory pattern. There is an abstract factory class (which can be abstract classes and interfaces), which will no longer be responsible for the specific production of the product, but only some specifications, and the specific production work will be done by its subclasses.

In this model, the factory class and the product class can often be corresponding. That is, an abstract factory corresponds to an abstract product, and a concrete factory corresponds to a specific product, and this specific factory is responsible for producing the corresponding product. The factory method pattern is the most typical template method pattern application.

At present, most of the displays use OSD menus to adjust various parameters, and the operation mode when the user adjusts the parameters is called"User mode"。When the display leaves the factory, it is stored in the microprocessor"User mode"and hide some special parameters. Special parameters can only be called up by special methods, and people call this mode that can only be called by special methods"Factory mode"。

Sometimes users call up by accident"Factory mode"and misuse or adjust out of curiosity. After exiting, they don't know how to enter again, which makes the display status of the display change, and the user has no idea what the meaning of these letters is. Therefore, we will describe in detail the factory mode commands of various brands of monitors on the market below to help you grasp its basic knowledge.