TWI687910B - Low power consumption display control method, display control device and information processing device - Google Patents

Abstract

A low-power display control method includes the following steps: transmitting at least one control command signal and a video stream data to the display control device, wherein the video stream data is stored in a storage unit inside the display control device; An update flag of the storage unit is dynamically monitored with the at least one control command signal; when it is detected that the content of the at least one control command signal has changed or the update flag describes that the video streaming data has been updated, activate the At least one processing function (or IP function block) inside the display control device; the processing function calculates a plurality of display adjustment parameters based on the video stream data; and stores the plurality of display adjustment parameters in the A temporary storage unit of the display control device controls a static image display.

Description

Low power consumption display control method, display control device and information processing device

The invention relates to the technical field of displays, in particular to a display control method and a display control device with low power consumption.

Mobile Industry Processor Interface (MIPI) is an open standard developed by the MIPI Alliance specifically for display control chips for mobile electronic devices. FIG. 1 is a structural diagram showing a display control chip of a mobile electronic device. As shown in FIG. 1, a display control chip 1 ′ is coupled to a display 3 ′ and a host processor 21 ′ of an electronic device 2 ′ based on MIPI DSI (Display Serial Interface) standard protocol, wherein, The electronic device 2'is a mobile electronic device; the display 3'includes a display panel 31' and a panel control circuit 32', and the panel control circuit 32' is used to control the display panel 31' to display images.

As mentioned above, the display control chip 1 ′ mainly includes: a temporary memory unit 11 ′, a control command receiving unit 12 ′, a processing unit 13 ′ and a low voltage differential signal serial interface unit (LVDS Serial Interface) 14 ′, The temporary storage unit 11' is used to temporarily store the video stream data sent by the host processor 21', and the control command receiving unit 12' is used to receive at least one control command sent by the host processor 21', For example: display screen switching, display screen parameter adjustment and other control commands. It should be further noted that the processing unit 13' is internally configured with a controller core, a temporary storage unit and a non-volatile memory (Non-volatile memory), and has a variety of processing functions, including drive control functions An image processing function and a display control function, wherein the multiple processing functions or intellectual property (IP) functional blocks are integrated in the non-volatile memory. It can be inferred that if the control command is a picture quality (brightness) adjustment command, the core controller will find a processing function for adjusting the picture quality (brightness) from the non-volatile memory and load it Temporary memory unit. Then, according to the control command signal, the core controller of the processing unit 13' can calculate and obtain a plurality of display adjustment parameters based on the video streaming data; finally, the processing unit 13' uses a low voltage differential signal (LVDS) sequence The interface unit 14' transmits the video stream data including the plurality of display adjustment parameters to the display 3'.

The control of the display control chip 1'for the display 3'generally includes: image writing and screen display. When the display 3'is controlled to display a static image, the video stream data temporarily stored in the temporary storage unit 11' (i.e., a plurality of frames of time-continuous images) is usually updated at an extremely low frequency Update. However, in order to avoid the flicker visible to the human eye when the display 3'displays a static image, the display control chip 1'will control the display 3'to display the same frame image at a high frame rate to complete the display of the static image .

However, during the display of the static image on the display 3', if the control command has not been changed, the processing unit 13' will repeatedly use the timing control of a timing control unit (not shown in the figure) to implement the described The relevant processing functions of the control commands are loaded into its internal temporary storage unit. It is conceivable that such a method inevitably causes the display control chip 1'to continuously generate power consumption.

In order to solve the above problems, a novel display control method is urgently needed in the art.

An object of the present invention is to provide a low-power display control method, which can be applied to any display control device based on the MIPI DSI standard, in particular, in addition to allowing the display control device to stream video according to control command signals In addition to data control of the dynamic picture display of a display, the display control device can also control the static picture display of the display with low power consumption.

Another object of the present invention is to provide a display control device, which can be applied to the MIPI DSI standard, and can enable the display control device to control the dynamic picture display of a display according to the control command signal and the video streaming data and enable the display control device to operate at low power Control the static picture display of the display under the condition of consumption.

In order to achieve the above object, a low-power display control method is proposed, which includes the following steps:

(1) Send at least one control command signal and a video stream data to a display control device, wherein the video stream data is stored in a storage unit inside the display control device;

(2) Dynamically monitor an update flag of the storage unit and the at least one control command signal;

(3) When it is detected that the content of the at least one control command signal changes or the update flag describes that the video streaming data has been updated, enable at least one processing function inside the display control device;

(4) The processing function calculates a plurality of display adjustment parameters based on the video streaming data; and

(5) Store the plurality of display adjustment parameters in a temporary storage unit of the display control device to control a static image display.

In an embodiment of the low-power display control method, the method further includes the following steps:

(6) The display control device transmits the video streaming data including the plurality of display adjustment parameters to the display through a serial interface unit based on the MIPI protocol in a multi-channel manner.

In one embodiment, the display control device receives at least one control command signal and the video streaming data from a host processor of an electronic device based on the MIPI protocol.

In one embodiment, the storage unit is a static random-access memory (SRAM).

In an embodiment, the display control device further includes a processing unit, and the processing unit is internally configured with the temporary memory unit, a core controller, and a non-volatile memory; the at least one processing function ( Or Intellectual property (IP) functional block is stored in the non-volatile memory.

In order to achieve the above purpose, the present case further provides a display control device, which includes:

A storage unit for receiving and storing a video stream data;

A control command receiving unit for receiving at least one control command signal;

A dynamic monitoring unit, coupled to the control command receiving unit and the storage unit, for dynamically monitoring an update flag and at least one control command signal of the storage unit;

A counting unit coupled to the dynamic monitoring unit; and

A processing unit, including complex processing functions;

Wherein, when the dynamic monitoring unit detects that the update flag describes that the video streaming data has been updated or the content of the control command signal is changed, the counting unit generates a function activation signal to cause the processing unit to perform the function according to the function Activate a signal to activate at least one of the processing functions, and based on the control command signal, instruct the processing function to calculate and obtain a plurality of display adjustment parameters according to the video streaming data.

In one embodiment, the display control device receives at least one control command signal and the video streaming data from a host processor of an electronic device based on the MIPI protocol.

In an embodiment, the display control device further includes:

A serial interface unit, coupled to the processing unit, is used to transmit the video stream data including the plurality of display adjustment parameters to a display in a multi-channel manner based on the MIPI protocol.

In one embodiment, the storage unit is a static random access memory, and the processing unit further includes:

A temporary memory unit;

A core controller coupled to the temporary memory unit; and

A non-volatile memory, coupled to the core controller, for storing the complex processing function; wherein, when the at least one processing function is activated, the core controller will load the processing function In the temporary memory unit.

According to the above description, the present invention further provides an information processing device having the display control device as described above to provide a low-power display function, and the information processing device may be a smart phone or a portable computer.

In order to enable your review committee to further understand the structure, features, objectives, and extreme advantages of the present invention, the drawings and the detailed description of the preferred embodiments are attached as follows.

The main principle of the present invention is that the present invention adds a dynamic monitoring unit and a counting unit in a display control device to monitor whether the control command and the update logo description of SDAM have changed. Among them, if the control command and the update logo description are both If there is no change, the display control device does not need to enable or enable the processing function (or IP), and can directly use the plurality of display adjustment parameters calculated by the previous activation processing function as the plurality of static parameters, and Transmitting video streaming data including the plurality of static parameters to the display; and if the control command or update logo description changes, the display control device will enable or enable the processing function (or IP) for a period of time to proceed Screen update.

Please refer to FIG. 2, which is a structural diagram of an embodiment of a display control device of the present invention. As shown in FIG. 2, a display control device 1 is coupled between a display 3 and a host processor 21 of an electronic device 2 based on the MIPI protocol. The electronic device 2 is a mobile electronic device, such as: Tablet computer, smart phone, virtual reality device, or smart watch; display 3 includes a display panel 31 and a panel control circuit 32; and display control device 1 includes a storage unit 11, a control command receiving unit 12, a The dynamic monitoring unit 13, a counting unit 14, a processing unit 15 and a serial signal interface unit 16. In particular, the conventional display control chip does not include the dynamic monitoring unit 13 and the counting unit 14 described in the present invention.

Under the architecture of FIG. 2, the present invention provides a display control method with low power consumption, so that the display control device 1 can control the screen display of the display 3 with low power consumption. Please refer to FIG. 3, which illustrates a flowchart of an embodiment of a low-power display control method of the present invention. As shown in FIG. 3, the low-power display control method first performs step S1: send at least one control command signal and a video stream data to the display control device 1, wherein the video stream data is stored in the display A storage unit 11 inside the control device 1. Then, step S2 is performed: dynamically monitoring an update flag of the storage unit 11 and at least one control command signal. As can be seen from FIG. 2, the display control device 1 receives at least one control command signal and the video streaming data from the host processor 21 of the electronic device 2 based on the MIPI protocol. Moreover, in the display control device 1, the storage unit 11 stores the video stream data, and the control command receiving unit 12 is used to receive the at least one control command signal. In addition, the dynamic monitoring unit 13 is coupled to the control command receiving unit 12 and the storage unit 11 for dynamically monitoring an update flag of the storage unit 11 and at least one control command signal, wherein the control command signal, For example, a picture quality (brightness) adjustment command entered by the user is used to drive the display control device 1 to control the display 3 to complete the corresponding display picture adjustment. In short, when no new control command signal is received, the display control device 1 only controls the screen display of the display 3 based on the received video stream data. Therefore, the purpose of performing step S2 is to determine whether it is necessary to adjust the display screen, such as switching or changing the display screen, enlarging or reducing the display screen, changing the display quality, or changing the display brightness.

Then, step S3 is executed: when it is detected that the content of the control command signal changes or the update flag describes that the video streaming data has been updated, enable or enable at least one processing function (or IP function) inside the display control device 1 Square). Then, step S4 is executed: the at least one processing function calculates a plurality of display adjustment parameters according to the video stream data. It must be added that the processing unit 15 usually includes a temporary memory unit, a core controller coupled with the temporary memory unit and a non-volatile memory, wherein the non-volatile memory is also controlled by the core The controller is coupled, and is used to store a plurality of processing functions (or IP function blocks). It can be inferred that if the update flag of the storage unit 11 describes that the video stream data has been updated, indicating that the display screen needs to be switched or changed, the processing unit 15 will enable (or enable) the corresponding at least one processing function ( Or IP function block) for a period of time to calculate and obtain multiple display adjustment parameters according to the received video streaming data. Similarly, a change in the content of the control command signal indicates that the user enters a new screen adjustment command. At this time, the processing unit 15 will also enable (or enable) the corresponding at least one processing function (or IP function block) according to the received Calculate multiple display adjustment parameters based on video streaming data.

After obtaining the plurality of display adjustment parameters, the process then proceeds to step S5: storing the plurality of display adjustment parameters in a temporary storage unit of the display control device 1 as a control for the display 3 to perform static screen display Multiple static parameters.

As mentioned above, the processing unit 15 inside the display control device 1 usually includes a temporary memory unit, a core controller and a non-volatile memory, wherein the core controller is loaded by at least one processing function (or IP function block) The method of temporarily storing the memory unit enables the at least one processing function. In particular, in order to avoid that the processing function (or IP function block) is still continuously enabled or enabled when the display 3 performs the static screen display, the present invention uses step S5 to process the processing function (or IP function block) ) The calculated display adjustment parameters are stored in the temporary storage unit as a plurality of static parameters. After that, in the process of displaying the static image on the display 3, if neither the control command nor the update logo has changed, the processing unit 13 does not need to enable or enable the processing function (or IP function block); instead, process The unit 13 can directly integrate the plurality of static parameters into the received video stream data. Finally, the display control device 1 transmits the video streaming data including the plurality of static parameters to the display 3 through the serial interface unit 16 based on the MIPI protocol in a multi-channel manner. In a possible embodiment, the serial interface unit 16 is a low-voltage differential signal serial interface (LVDS Serial Interface).

In addition, in order to increase the access speed of the storage unit 11, a static random-access memory (SRAM) can be used as the storage unit 11. On the other hand, there are many types of processing functions (or IP function blocks), including drive control functions, image processing functions, and display control functions. Moreover, when the display control device 1 is used to control the displays 3 of different brands, the drive control function, the image processing function and the display control function will also have different substance contents. For this reason, the various processing functions (or IP function blocks) are usually integrated in the non-volatile memory inside the processing unit 15 to facilitate the immediate access and activation of the core controller of the processing unit 15.

According to the above description, the present invention further provides an information processing device having the display control device 1 as described above to provide a low-power display function, and the information processing device may be a smart phone or a portable computer.

In this way, the above has completely and clearly explained the principles and technical features of the present invention, and through the above it can be known that the present invention has the following advantages:

(1) The low-power display control method of the present invention can be applied to any display control device based on the MIPI DSI standard, and in addition to allowing the display control device to control a display according to control command signals and video streaming data In addition to the dynamic picture display, the display control device can also control the static picture display of the display with low power consumption.

(2) The display control device of the present invention can be applied to the MIPI DSI standard, and can cause the display control device to control the dynamic picture display of a display according to the control command signal and the video streaming data and the display control device to control under low power consumption The static picture display of the monitor.

In addition, it must be emphasized that the aforementioned disclosure is the preferred embodiment of the case, and any part of the changes or modifications that originated from the technical idea of the case and are easily inferred by those who are familiar with the skill, do not leave the case. The scope of patent rights.

In summary, regardless of the purpose, means or effectiveness of this case, it shows that it is very different from the conventional technology, and its first invention is practical and practical, and it does meet the patent requirements of the invention. Society is for supreme prayer.

<The present invention>

Step S1: Send at least one control command signal and a video stream data to a display control device, wherein the video stream data is stored in a storage unit inside the display control device

Step S2: dynamically monitor an update flag of the storage unit and the at least one control command signal

Step S3: When it is detected that the content of the at least one control command signal is changed or the update flag describes that the video streaming data has been updated, at least one processing function inside the display control device is activated

Step S4: The processing function calculates a plurality of display adjustment parameters based on the video stream data

Step S5: Store the plurality of display adjustment parameters in a temporary storage unit of the display control device to control a static image display

1: display control device

2: Electronic device

3: display

11: Storage unit

12: Control command receiving unit

13: Dynamic monitoring unit

14: counting unit

15: Processing unit

16: Serial signal interface unit

21: host processor

31: Display panel

32: Panel control circuit

<Xizhi>

1’: Display control chip

11’: Temporary memory unit

12’: Control command receiving unit

13’: Processing unit

14’: Low-voltage differential signal sequence interface unit

2’: Electronic device

21’: Host processor

3’: monitor

31’: Display panel

32’: Panel control circuit

FIG. 1 is an architecture diagram of a display control chip of a conventional mobile electronic device; FIG. 2 is an architecture diagram of an embodiment of a display control device of the present invention; and FIG. 3 is an embodiment of a low-power display control method of the present invention Flow chart.

Step S1: Send at least one control command signal and a video stream data to a display control device, wherein the video stream data is stored in a storage unit inside the display control device

Step S2: dynamically monitor an update flag of the storage unit and the at least one control command signal

Step S3: When it is detected that the content of the at least one control command signal is changed or the update flag describes that the video streaming data has been updated, at least one processing function inside the display control device is activated

Step S4: The processing function calculates a plurality of display adjustment parameters based on the video stream data

Step S5: Store the plurality of display adjustment parameters in a temporary storage unit of the display control device to control a static image display

Claims (10)

A low-power display control method applied to a display control device includes the following steps: (1) Send at least one control command signal and a video stream data to the display control device, wherein the video stream data is stored in A storage unit inside the display control device; (2) dynamically monitor an update flag of the storage unit and the at least one control command signal; (3) when the content of the at least one control command signal is detected to be changed Or the update flag describes that the video streaming data has been updated, enabling at least one processing function within the display control device; (4) the processing function calculates a plurality of display adjustment parameters based on the video streaming data And (5) store the plurality of display adjustment parameters in a temporary storage unit of the display control device to control a static picture display. The low-power display control method as described in item 1 of the patent scope further includes the following steps: the display control device streams the video including the plurality of display adjustment parameters based on the MIPI protocol through a serial interface unit Data is sent to the display in multiple channels. The low-power consumption display control method as described in item 1 of the patent application scope, wherein in this step (1), the display control device receives the at least one from a host processor of an electronic device based on the MIPI agreement A control command signal and the video streaming data. The low power consumption display control method as described in item 1 of the patent scope, wherein the storage unit is a static random access memory. The low-power display control method as described in item 1 of the patent application scope, wherein the display control device further includes a processing unit, and the processing unit is internally configured with the temporary storage unit, a core controller, and a non- Volatile memory, and the at least one processing function is stored in the non-volatile memory. A display control device includes: a storage unit for receiving and storing a video stream data; a control command receiving unit for receiving at least one control command signal; and a dynamic monitoring unit coupled to the control command receiving The unit and the storage unit are used to dynamically monitor an update flag of the storage unit and at least one of the control command signals; a counting unit coupled to the dynamic monitoring unit; and a processing unit including a plurality of processing functions ; Wherein, when the dynamic monitoring unit detects that the update flag describes that the video stream data has been updated or the content of the control command signal is changed, the counting unit generates a function enable signal, so that the processing unit according to the The function activation signal activates at least one of the processing functions, and based on the control command signal, causes the processing function to calculate and obtain a plurality of display adjustment parameters according to the video stream data. The display control device as described in item 6 of the patent application scope receives the at least one control command signal and the video streaming data from a host processor of an electronic device based on the MIPI agreement. The display control device as described in item 6 of the patent application scope further includes: a serial interface unit, coupled to the processing unit, for the video streaming data including the plurality of display adjustment parameters based on the MIPI agreement Send to a display in multiple channels. The display control device according to item 6 of the patent application scope, wherein the storage unit is a static random access memory, and the processing unit further includes: a temporary storage unit; A core controller, coupled to the temporary memory unit; and a non-volatile memory, coupled to the core controller, for storing the complex processing function; wherein, in the at least one processing function When enabled, the core controller loads the at least one processing function into the temporary storage unit. An information processing device having the display control device as described in any one of items 6-9 of the patent application scope.

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