TWI836847B - Display resolution switching method, display device, and information processing device - Google Patents

Abstract

The present invention mainly discloses a display resolution switching method, which is applied to a display device including a display panel, at least one display driver chip and a microprocessor chip, and is executed by the microprocessor chip and the display driver chip. , so that the display device can switch to different resolutions arbitrarily. When the display resolution switching method of the present invention is applied, the display driver chip does not need to adjust a data received from the microprocessor chip according to a data scaling ratio during the resolution switching process. A plurality of display data contained in the display data packet are scaled/zoomed together. Moreover, the microprocessor chip does not need to insert a black frame image to cover up instantaneous display abnormalities during the resolution switching process.

Description

Display resolution switching method, display device, and information processing device

The present invention relates to the technical field related to display drivers, and in particular, to a display resolution switching method that does not require inserting a black frame image.

FIG1 is a block diagram of a known display device. Electronic engineers familiar with the design and manufacture of display devices must know that the structure of the known display device 1a includes: a display panel 11a, at least one display driver IC (DDI) 12a and a microprocessor chip 13a, wherein the microprocessor chip 13a is, for example, an application processor chip (AP).

Further, FIG. 2 is a timing diagram of a plurality of signals transmitted from the microprocessor chip shown in FIG. 1 to the display driver chip. As shown in Figures 2 and 1, when the display device 1a displays an image, the microprocessor chip 13a (i.e., the host computer) usually transmits a vertical synchronization signal (or frame synchronization signal) Vsync, a horizontal synchronization signal The signal (or horizontal synchronization signal) Hsync, a display data enable signal DE and a display data packet DATA[n:1] are sent to the display driver chip 12a. As shown in FIG. 2, during the effective display time interval, the display driver chip 12a sequentially receives the display data packet DATA[n:1] according to the horizontal synchronization signal Hsync and the display data enable signal DE. Contains the 1st to Nth display data.

At present, high-end display devices 1a have the function of adjustable resolution, such as display resolution types such as 800×600, 1200×900, and 1600×1200. FIG3 is a schematic diagram of a display data set received by the display driver chip shown in FIG1. For example, as shown in FIG2 and FIG3, after sequentially receiving the 1st to Nth display data contained in the display data packet DATA[n:1], the display driver chip 12a obtains the first display data set DATA_1 for driving the display panel 11a to display an image. The first display data set DATA_1 includes 1200 display data, so that the display panel 11a displays images at a resolution of 1600×1200.

It is worth noting that if the microprocessor chip 13a (i.e., the host computer) directly transmits the first display data group DATA_1 in the form of the display data packet DATA[n:1], then the system requires a high-speed bandwidth, that is, within the effective display time period, the width of the multiple pulse signals included in the horizontal synchronization signal Hsync is shorter, thereby including more pulse signals. It should be understood that operating at a high-speed bandwidth will inevitably occupy more computing resources of the microprocessor chip 13a and the display driver chip 12a, resulting in undesirable phenomena such as chip overheating. Therefore, as shown in Figures 1 and 3, the prior art will add a display data scaling unit (Data scaling ratio) 121a in the display driver chip 12a. According to this configuration, when displaying an image, the microprocessor chip 13a only needs to transmit a second display data set DATA_2 to the display driver chip 12a in the form of the display data packet DATA[n:1], and the display data scaling unit 121a will automatically scale/enlarge the second display data set DATA_2 to the first display data set DATA_1 or a third display data set DATA_3 according to the display resolution type currently set by the user.

To explain in more detail, as shown in Figure 3, the second display data group DATA_2 contains 600 pieces of display data, so that the display panel 11a operates at a resolution of 800×600 Image display. Therefore, the display data scaling unit 121a scales/scales the second display data group DATA_2 into the first display data group DATA_1 according to a Data scaling ratio of 2 times. On the other hand, as shown in FIG. 3 , the third display data group DATA_3 includes 900 pieces of display data, so that the display panel 11a displays images at a resolution of 120×900. Therefore, the display data scaling unit 121a scales/scales the second display data group DATA_2 into the third display data group DATA_3 according to a Data scaling ratio of 1.33 times.

As shown in FIG. 2 and FIG. 3, when changing different data scaling ratios to switch the display resolution, the display driver chip 12a must adjust the horizontal synchronization signal Hsync accordingly, resulting in the consumption of its computing resources. Therefore, in the process of changing different data scaling ratios to switch the display resolution, a momentary display abnormality will occur. At present, the conventional technology uses a method of displaying a black screen to cover one of the aforementioned momentary display abnormalities. Even so, the covering method of inserting black frame images used in the conventional technology still reduces the user's operating experience.

It can be seen from the above description that there is an urgent need in the art for a display resolution switching method that does not require inserting a black frame image.

The main purpose of the present invention is to provide a display resolution switching method, which is applied to a display device including a display panel, at least one display driver chip and a microprocessor chip, and is executed by the microprocessor chip and the display driver chip, so that the display device can switch the resolution arbitrarily. When the display resolution switching method of the present invention is applied, the display driver chip does not need to perform a scaling process on a plurality of display data contained in a display data packet received from the microprocessor chip according to a scaling ratio (Data scaling ratio) during the resolution switching process. In addition, the microprocessor chip does not need to insert a black frame image to cover the display abnormality that occurs instantly during the resolution switching process.

To achieve the above object, the present invention proposes an embodiment of the display resolution switching method, which is applied to a display device including a display panel, at least one display driver chip and a microprocessor chip, and is The microprocessor chip and the display driver chip execute and include the following steps: the microprocessor chip generates a first display data packet according to a first resolution, wherein the first resolution is the highest resolution of the display device degree, the first display data includes N first display data, and N is a positive integer; the microprocessor chip generates a second display data packet based on a second resolution lower than the highest resolution, wherein, The second display data includes P second display data and Q expanded display data, P and Q are both positive integers, and P+Q=N; when the display device 1 operates at the highest resolution Next, the microprocessor chip transmits the first display data packet to the display driver chip, so that the N first display data of the display driver chip drives the display panel to display images; and when the display device operates, In the case of the second resolution, the microprocessor chip transmits the second display data packet to the display driver chip, and the display driver chip merges and sorts the P second display data into N third display data, and drive the display panel to display images according to the P third display data.

In one embodiment, the microprocessor chip is provided with an augmented display data insertion unit for inserting Q pieces of the augmented display data into a display data packet including P pieces of the second display data. , in this way the second display data packet is generated.

In one embodiment, a display data merging unit is provided in the display driver chip, which is used to merge and sort the P second display data into the N third display data when the display device operates at the second resolution.

In one embodiment, the Q amplified display data are plugged into a plugging position in the display data package, and the plugging position is selected from a front-end position, a middle position, and a back-end position. form one of the groups.

Furthermore, the present invention also proposes an embodiment of a display device, which includes a display panel, at least one display driver chip and a microprocessor chip; the feature is that the microprocessor chip and the display driver chip perform a display analysis The display resolution switching method thereby switches the display device between a first resolution and an arbitrary second resolution different from the first resolution, and the display resolution switching method includes the following steps: The microprocessor chip generates a first display data packet based on the first resolution, where the first resolution is the highest resolution of the display device, the first display data includes N pieces of first display data, and N is a positive integer; the microprocessor chip generates a second display data packet based on the second resolution, where the second resolution is lower than the first resolution, and the second display data includes P second display data And Q amplified display data, P and Q are both positive integers, and P+Q=N; when the display device operates at the highest resolution, the microprocessor chip transmits the first display data Packaged into the display driver chip, the N first display data of the display driver chip drives the display panel to perform image display; and when the display device operates at the second resolution, the microprocessor The chip transmits the second display data packet to the display driver chip, and the display driver chip The P pieces of second display data are merged and sorted into N pieces of third display data, and the display panel is driven to perform image display based on the N pieces of third display data.

In one embodiment, the microprocessor chip is provided with an augmented display data insertion unit for inserting Q pieces of the augmented display data into a display data packet including P pieces of the second display data. , in this way the second display data packet is generated.

In one embodiment, the display driver chip is provided with a display data merging unit for merging and sorting the P second display data into The N third display data.

In one embodiment, the Q extended display data are inserted into a plug-in position in the display data packet, and the plug-in position is one selected from the group consisting of a front position, a middle position, and a rear position.

Furthermore, the present invention also provides an information processing device, which is characterized in that it includes the display device of the present invention as mentioned above. In one embodiment, the information processing device is selected from a flat display device, a smart TV, a smart phone, a smart watch, a tablet computer, an all-in-one computer, a notebook computer, a car entertainment device, and a video doorway An electronic device in a group of machines.

1a:Display device

11a: Display panel

12a: Display driver chip

121a: Display data scaling unit

13a:Microprocessor chip

1:Display device

11:Display panel

12:Display driver chip

121: Display data merge unit

13: Microprocessor chip

131: Expand the display data insertion unit

S1: The microprocessor chip generates a first display data packet according to a first resolution

S2: The microprocessor chip generates a second display data packet based on a second resolution lower than the highest resolution.

S3: When the display device operates at the highest resolution, the microprocessor chip transmits the first display data packet to the display driver chip, so that the display driver chip drives the display panel to display images with N first display data.

S4: When the display device operates at the second resolution, the microprocessor chip transmits the second display data packet to the display driver chip, and the display driver chip merges and sorts the P second display data into N third display data, and drive the display panel to display images based on the N third display data.

Figure 1 is a block diagram of a conventional display device; Figure 2 is a timing diagram of a plurality of signals transmitted from the microprocessor chip shown in Figure 1 to the display driver chip; Figure 3 is a diagram of the display driver chip shown in Figure 1 A schematic diagram of the received display data set; Figure 4 is a block diagram of a display device applying a display resolution switching method of the present invention; Figure 5 is a flow chart of a display resolution switching method of the present invention; Figure 6 is a first display data packet and two A schematic diagram of the second display data package; Figure 7 is a first schematic diagram of P second display data, Q amplification display data and N third display data; Figure 8 is a P second display data and Q amplification A second schematic diagram of display data and N third display data; Figure 9 is a schematic diagram of a first display data packet and its corresponding N display data and a second display data packet and its corresponding N third display data; and Figure 10 It is a schematic diagram of two sets of second display data packets and their corresponding N pieces of third display data.

In order to enable the review committee to further understand the structure, features, purpose, and advantages of the present invention, the detailed description of the drawings and preferred specific embodiments is attached as follows.

Please refer to FIG. 4, which is a block diagram of a display device that applies a display resolution switching method of the present invention. As shown in FIG. 4, the display device 1 includes a display panel 11, at least one display driver chip 12, and a microprocessor chip 13, wherein the microprocessor chip 13 is, for example, an application processor chip (AP). Moreover, the display resolution switching method of the present invention is executed by the microprocessor chip 13 and the display driver chip 12, so that the display device 1 switches between a first resolution and an arbitrary second resolution different from the first resolution.

FIG5 is a flow chart of a display resolution switching method of the present invention. As shown in FIG4 and FIG5, the display resolution switching method of the present invention first executes step S1: the microprocessor chip 13 generates a first display data packet according to a first resolution, wherein the first resolution is the highest resolution of the display device 1, and the first display data includes N first display data, and N is a positive integer. For example, the highest resolution of the display device 1 is 1600×1200, and the first display data includes 1200 first display data (i.e., row display data).

Next, the method flow is to execute step S2: the microprocessor chip 13 generates a second display data packet according to a second resolution lower than the highest resolution, wherein the second display data includes P second display data and Q expanded display data, P and Q are both positive integers, and P+Q=N. FIG6 shows a schematic diagram of a first display data packet and two second display data packets. As shown in FIG6, when the second resolution is 1200×900, the second display data includes 900 second display data and 300 expanded display data, and 900+300=1200. On the other hand, if the second resolution is 800×600, the second display data includes 600 second display data and 600 expanded display data, and 600+600=1200. As shown in FIG4 , an extended display data insertion unit 131 may be added to the microprocessor chip 13 to insert Q extended display data into a display data packet containing P second display data, thereby generating the second display data packet. Moreover, in a feasible embodiment, the Q extended display data are inserted at the front position, middle position, or rear position in the display data packet. For example, FIG6 exemplarily illustrates that the Q extended display data are inserted at the rear position in the display data packet.

Next, the method flow then executes step S3: when the display device 1 operates at the highest resolution, the microprocessor chip 13 transmits the first display data packet to the display driver chip 12, so that the display driver chip 12 drives the display panel 11 to display images with the N first display data. Further, the method flow then executes step S4: when the display device 1 operates at the second resolution, the microprocessor chip 13 transmits the second display data packet to the display driver chip 12, and the display driver chip 12 merges and sorts the P second display data into N third display data, and drives the display panel 11 to display images according to the N third display data. In one embodiment, as shown in FIG. 4 , a display data merging unit 121 may be added to the display driver chip 12 to merge and sort the P second display data into the N third display data when the display device 1 operates at the second resolution.

Please refer to FIG. 7, which shows a first schematic diagram of P second display data, Q expanded display data, and N third display data. As shown in FIG. 7, after receiving the second display data packet, the display driver chip 12 first stores the P second display data and Q expanded display data in the memory, and then, the display driver chip 12 merges the P second display data according to a merging rule and arranges them into N third display data. It is worth noting that the aforementioned expanded display data is used to make the second display data packet have the same display data quantity as the first display data packet, and it will not be used to display the display data of the display panel 11, so it is invalid (dummy) display data. For example, as shown in FIG. 4 and FIG. 7 , when the second resolution is 1200×900, the display data merging unit 121 reads 900 second display data from the memory of the display driver chip 12, and then merges and arranges the 900 second display data to obtain 1200 third display data.

On the other hand, FIG8 shows a second schematic diagram of P second display data, Q expanded display data, and N third display data. As shown in FIG8, if the second resolution is 800×600, the display data merging unit 121 reads 600 second display data from the memory of the display driver chip 12, and then merges and arranges the 600 second display data to obtain 1200 third display data. It can be understood from FIG7 and FIG8 that when applying the method of the present invention, the merging and arranging rules adopted vary according to different second resolutions, as long as the P second display data can be re-merged and arranged into N third display data.

FIG. 9 is a schematic diagram of a first display data packet and its corresponding N pieces of display data, and a second display data packet and its corresponding N pieces of third display data. As shown in FIG. 9 , the present invention uses Q pieces of amplified display data to amplify the number of display data carried in the second display data packet corresponding to the second resolution to N pieces, so that it has the same content as the one corresponding to the highest resolution. The first display data packet has the same display data number. Therefore, after the display driver chip 12 combines the P pieces of second display data in the second display data packet and arranges them into N pieces of third display data, the display driver chip 12 then adjusts the display panel according to the N pieces of third display data. 11 Perform display driver. Therefore, when the method of the present invention is applied, the display device can switch the resolution arbitrarily, for example, switch from the highest resolution to the A resolution as shown in FIG. 9 . On the other hand, FIG. 10 is a schematic diagram of two sets of second display data packets and their corresponding N pieces of third display data. As shown in FIG. 9 , of course, the method of the present invention can also switch the display resolution of the display device 1 from the A resolution to the B resolution to achieve arbitrary resolution switching.

In this way, the above has completely and clearly explained the display resolution switching method of the present invention; and from the above, it can be known that the present invention has the following advantages:

(1) The present invention provides a display resolution switching method, which is applied to a display device including a display panel, at least one display driver chip and a microprocessor chip, and is executed by the microprocessor chip and the display driver chip, so that the display device can switch different resolutions at will. When the display resolution switching method of the present invention is applied, the display driver chip does not need to perform a scaling process on a plurality of display data contained in a display data packet received from the microprocessor chip according to a scaling ratio during the resolution switching process. In addition, the microprocessor chip does not need to insert a black frame image to cover up the display abnormality that occurs instantly during the resolution switching process.

(2) In addition, the present invention also provides a display device, which includes a display panel, at least one display driver chip and a microprocessor chip; the feature of the display device is that the microprocessor chip and the display driver chip execute a display resolution switching method of the present invention so that the display device can switch between any two resolutions.

(3) Furthermore, the present invention also provides an information processing device, which is characterized in that it includes the display device of the present invention as described above. In a feasible embodiment, the information processing device is an electronic device selected from the group consisting of a flat-panel display device, a smart TV, a smart phone, a smart watch, a tablet computer, an all-in-one computer, a laptop computer, a car entertainment device, and a video door machine.

It must be emphasized that the foregoing disclosed in this case are preferred embodiments. Any partial changes or modifications derived from the technical ideas of this case and easily inferred by those familiar with the art do not deviate from the patent of this case. category of rights.

In summary, this case shows that its purpose, means and effects are different from the known technology, and it is the first invention that is practical and meets the patent requirements for invention. We sincerely ask the review committee to examine it and grant a patent as soon as possible to benefit the society. This is our utmost prayer.

S1: The microprocessor chip generates a first display data packet according to a first resolution

S2: The microprocessor chip generates a second display data packet based on a second resolution lower than the highest resolution.

S3: When the display device operates at the highest resolution, the microprocessor chip transmits the first display data packet to the display driver chip, so that the display driver chip drives the display panel with N first display data to display images.

S4: When the display device operates at the second resolution, the microprocessor chip transmits the second display data packet to the display driver chip, the display driver chip merges and sorts the P second display data into N third display data, and drives the display panel to display images according to the N third display data.

Claims (8)

A display resolution switching method is applied to a display device including a display panel, at least one display driver chip and a microprocessor chip, and is executed by the microprocessor chip and the display driver chip, and includes: the microprocessor chip generates a first display data packet according to a first resolution, wherein the first resolution is the highest resolution of the display device, the first display data includes N first display data, and N is a positive integer; the microprocessor chip generates a second display data packet according to a second resolution lower than the highest resolution, wherein the second display data includes P second display data and Q expanded display data, P and Q are both positive integers, and P+Q=N; when the display device operates at the highest resolution, In the case of the display device operating at the second resolution, the microprocessor chip transmits the first display data packet to the display driver chip, so that the display driver chip drives the display panel to display images with the N first display data; and in the case of the display device operating at the second resolution, the microprocessor chip transmits the second display data packet to the display driver chip, the display driver chip merges and sorts the P second display data into N third display data, and drives the display panel to display images according to the N third display data; wherein, the microprocessor chip is provided with an extended display data insertion unit for inserting Q extended display data into a display data packet containing P second display data, thereby generating the second display data packet. The display resolution switching method as described in claim 1, wherein the display driver chip is provided with a display data merging unit for merging and sorting the P second display data into the N third display data when the display device operates at the second resolution. The display resolution switching method as described in claim 1, wherein the Q extended display data are inserted into a plug-in position in the display data packet, and the plug-in position is one selected from the group consisting of a front position, a middle position, and a rear position. A display device includes a display panel, at least one display driver chip and a microprocessor chip, characterized in that the microprocessor chip and the display driver chip perform a display resolution switching method so that the display device Switching between a first resolution and an arbitrary second resolution different from the first resolution, and the switching method of the display resolution includes: the microprocessor chip generates a first resolution based on the first resolution. A display data package, wherein the first resolution is the highest resolution of the display device, the first display data includes N first display data, and N is a positive integer; the microprocessor chip is based on the second The resolution generates a second display data packet, wherein the second resolution is lower than the first resolution. The second display data includes P second display data and Q amplified display data, both P and Q. is a positive integer, and P+Q=N; when the display device operates at the highest resolution, the microprocessor chip transmits the first display data packet to the display driver chip, so that the display driver chip The N first display data drives the display panel to perform image display; and when the display device operates at the second resolution, the microprocessor chip transmits the second display data packet to the display driver chip, the display driver chip will be described P second display data are merged and sorted into N third display data, and the display panel is driven to perform image display based on the N third display data; wherein, the microprocessor chip is provided with an enlarged display The data insertion unit is used to insert Q pieces of the amplified display data into a display data packet including P pieces of the second display data, thereby generating the second display data packet. The display device as described in claim 4, wherein the display driver chip is provided with a display data merging unit for merging and sorting the P second display data into the N third display data when the display device operates at the second resolution. A display device as described in claim 4, wherein the Q extended display data are inserted into a plug-in position in the display data packet, and the plug-in position is one selected from the group consisting of a front position, a middle position, and a rear position. An information processing device, characterized in that it includes a display device as described in any one of claim 4 to claim 6. The information processing device as claimed in claim 7, wherein the information processing device is selected from the group consisting of a flat display device, a smart TV, a smart phone, a smart watch, a tablet computer, an all-in-one computer, a notebook computer, and a vehicle-mounted computer. It is an electronic device among the group composed of entertainment device and video door phone.