TWI507032B - And a display method and a device for preventing the display of the abnormality of the screen display - Google Patents

Description

Display method and device for preventing screen display abnormality caused by signal switching

The present invention relates to an image display method and a display device, and more particularly to a display method and apparatus for preventing image display abnormality caused by signal switching.

As 3D technology matures, related products are gradually appearing in people's daily lives, such as displays that can output 3D images. In general, the above display uses a High Definition Multimedia Interface (HDMI) version of "1.4" to receive source signals, pictures and digital data, such as 720p signals or 1080p signals, 2D pictures or 3D pictures. The 3D pictures can be further divided into three types according to the arrangement of pixels (Pixel), which are respectively Frame Packing, Side by Side, and Top Bottom. and many more. The digital data represents the arrangement of the pictures.

Normally, when the display continuously receives the picture, the display cannot know from the screen that the picture is a 2D picture or a 3D picture, so the display will judge that the source signal is in a stable state. However, when the source signals are different, for example, when the source signal received by the display is converted from a 720p signal to a 1080p signal, the display determines that the source signal is unstable. In this unstable state, the display can detect the unstable state and re-apply the correct display format, that is, the display format adopted by the display is consistent with the input format of the source signal (for example, the same 3D picture) Format) The display can output the display screen normally.

However, when the signal source maintains the original signal transmission, only the 2D picture is converted into a 3D picture of "image side by side" or "image side by side". Although the picture and digital data have been changed, the existing display is The source signal will still be determined to be in a stable state. Therefore, the existing display does not re-use the correct display format, so that the display format used by the display is inconsistent with the input format of the source signal, thus causing the phenomenon that the picture cannot be displayed correctly.

At this time, the user must re-plug the connector of the high-definition multimedia interface (Cable) or restart the display, so that the display can be re-displayed in the same format as the input format of the source signal, in order to output the display screen normally. However, this solution will cause inconvenience to the user.

Accordingly, it is an object of the present invention to provide a display method for preventing an abnormality of a screen from being caused by switching between a screen and a digital data.

Therefore, the display method for preventing the screen display from being abnormal due to the signal switching of the present invention comprises the following steps: (A) the zoom controller receives an image signal for the microprocessor to obtain a current timing of the pair of image signals according to the image signal. (B) the microprocessor determines whether the image signal is in a stable state according to the current timing data and a preset initial timing data; (C) if the image signal is in a stable state, the microprocessor determines the scaling Whether the controller has generated an image frame, if the image signal is in an unstable state, the zoom controller does not generate any image frame; (D) if the zoom controller has generated the image frame, the microprocessor determines The Whether the current time series data includes a 3D format indication data; (E) if the current time series data includes the 3D format indication data, the microprocessor sets a current image format as the 3D format of the input signal, if the current time series data If the 3D format indication data is not included, the microprocessor sets the current image format to a 2D format; (F) the microprocessor determines whether the current image format matches a preset display image format, wherein the display image The format is preset to one of the 3D format and the 2D format of the input signal; (G) if the current image format does not match the display image format, the display image format is set to the current image format; and (H) The zoom controller regenerates the image frame according to the display image format.

Another object of the present invention is to provide a display device that prevents a screen from being displayed abnormally by preventing signal switching.

Therefore, the display device for preventing the screen display from being abnormal caused by the signal switching of the present invention comprises a zoom controller and a microprocessor.

The zoom controller is configured to receive an image signal.

The microprocessor is configured to obtain a current timing data of a pair of image signals according to the image signal.

The microprocessor determines whether the image signal is in a stable state according to the current timing data and a preset initial timing data. If the image signal is in a stable state, the microprocessor determines whether the zoom controller has generated an image frame; if the image signal is in an unstable state, the zoom controller does not generate any image frame.

If the zoom controller has generated the image frame, the microprocessor determines whether the current time series data includes a 3D format indication material.

If the current timing data includes the 3D format indication data, the microprocessor sets a current image format to a 3D format of the input signal; if the timing data does not include the 3D format indication data, the microprocessor The current image format is set to 2D format.

The microprocessor then determines whether the current image format matches a predetermined display image format. If the current image format does not match the display image format, the display image format is set to the current image format. The display image format is preset to one of a 3D format and a 2D format of the input signal.

The zoom controller then regenerates the image frame according to the display image format.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to FIG. 1 and FIG. 2, a preferred embodiment of the display device 1 for preventing signal switching abnormality caused by the signal switching of the present invention comprises a scaling controller 11 and a microprocessor electrically connected to the scaling controller 11. A controller (MCU) 12, and a display 13 electrically connected to the zoom controller 11. In the preferred embodiment, the display device 1 receives an image signal, such as a 2D picture or a 3D picture, using a high definition multimedia interface of version "1.4".

The zoom controller 11 is configured to receive the image signal and generate an image frame.

The microprocessor 12 is configured to obtain a current timing data of a pair of image signals according to the image signal. The current timing data includes a signal frequency value, a resolution value, and a scan frequency value corresponding to the image signal.

The display 13 is configured to display the image frame generated by the zoom controller 11.

In the following, a display method for causing an abnormality of the screen display in conjunction with a preventive signal switching is further described for the interaction between the zoom controller 11, the microprocessor 12, and the display 13.

First, when the user activates the display device 1, the zoom controller 11, and the microprocessor 12, begin to operate.

As shown in step S21, the zoom controller 11 receives the image signal for the microprocessor 12 to obtain the current time series data corresponding to the image signal according to the image signal. That is, the microprocessor 12 parses the image signal to obtain the current timing data. As mentioned above, the current timing data includes information such as the signal frequency value, the resolution value, and the scanning frequency value.

As shown in step S22, the microprocessor 12 determines whether the video signal is in a stable state according to the current timing data and a preset initial timing data. In the preferred embodiment, the preset initial timing data may include information such as a signal frequency value, a resolution value, and a scan frequency value of the corresponding 2D signal, and may also include a signal frequency value and a resolution value corresponding to the 3D signal. , and scan frequency values and other information.

In the preferred embodiment, when the current timing data includes a signal frequency value, a resolution value, and a scanning frequency value, respectively, the initial timing data packet When the signal frequency value and the resolution value are equal to the scan frequency value, the microprocessor 12 determines that the image signal is in a stable state. In other words, if at least one of the signal frequency value, the resolution value, and the scan frequency value included in the current time series data is not equal to the signal frequency value, the resolution value, and the scan frequency value included in the initial time series data, The microprocessor 12 determines that the video signal is in an unstable state. In general, when the microprocessor 12 determines that the video signal is in an unstable state, the zoom controller 11 does not generate any image frame, that is, the display 13 cannot display any image frame for the user to view.

For example, if the resolution value of the current time series data is "1280 ^* 720" and the resolution value of the initial time series data is "1920 ^* 1080", the microprocessor 12 determines that the image signal is in an unstable state. And the zoom controller 11 does not generate an image screen for display by the display 13.

If the image signal is in a stable state as shown in step S23, the microprocessor 12 determines whether the zoom controller 11 has generated an image frame.

As shown in step S24, if the zoom controller 11 has generated the image frame, the microprocessor 12 determines whether the current time series data includes a 3D format indication material.

In the preferred embodiment, the 3D format indication data is mainly the seventh bit and the sixth bit in the fifth byte (PB4) of the HDMI Vendor Specific InfoFrame Packet Contents in the high definition multimedia interface architecture. The bit, and the fifth bit. Further, when the arrangement of the above three bits from the high bit to the low bit is "010", the microprocessor 12 determines that the current time series data includes the 3D format indication data. . On the other hand, when the arrangement of the above three bits from the high bit to the low bit is not "010", the microprocessor 12 determines that the current time series data does not include the 3D format indication data.

It is worth mentioning that when the image signal is a 3D signal, the microprocessor 12 can also be based on the sixth byte (PB5) of the HDMI Vendor Specific InfoFrame Packet Contents in the high definition multimedia interface architecture. The arrangement of the seven bits, the sixth bit, the fifth bit, and the fourth bit determines the 3D signal of the image signal.

For example, if the arrangement of the above four bits from the high bit to the low bit is "0000", the microprocessor 12 determines that the image signal is "image frame encapsulation". Similarly, if the arrangement of the above four bits from the high-order to the low-order is "1000", the microprocessor 12 determines that the image signal is "left and right side by side". Similarly, if the arrangement of the above four bits from the high-order to the low-order is "0110", the microprocessor 12 determines that the image signal is "image side-by-side".

As shown in step S25 and step S26, if the current time series data includes the 3D format indication data, the microprocessor 12 sets a current image format to the 3D format of the input signal. If the current timing data does not include the 3D format indication data, the microprocessor 12 sets the current image format to a 2D format. In the preferred embodiment, the current image format is a variable used to represent the image format of the image signal. That is, the microprocessor 12 will include the 3D format indication data according to the current timing data, and set the current image format to the 3D format or 2D format of the input signal. formula.

As shown in step S27, the microprocessor 12 determines whether the current image format matches a predetermined display image format. The display image format is preset to one of a 3D format and a 2D format of the input signal. That is, the preset display image format represents the image format of the image frame that the display 13 is already displaying, and the current image format represents the image format of the image signal that the zoom controller 11 has just received.

If the current image format does not match the display image format, as shown in step S28, the display image format is set to the current image format. That is, when the image format of the image frame being displayed is different from the image format of the image signal just received, the microprocessor 12 re-sets the display image format to the current image format.

For example, if the display image format is a 2D format and the current image format is a 3D format, the microprocessor 12 resets the display image format to a 3D format. Similarly, if the display image format is a 3D image side by side format, and the current image format is a 3D image side by side format, the microprocessor 12 resets the display image format to a 3D image side by side format to make the display The image format of the image frame in the image is the same as the image format of the image signal just received.

Moreover, if the current image format matches the display image format, the image format representing the image frame being displayed is the same as the image format of the image signal just received, so there is no image format inconsistency resulting in the zoom controller. 11 The problem of the screen cannot be displayed correctly. Therefore, the zoom controller 11 will continuously receive the video signal to recursively perform the steps of the present invention.

As shown in step S29, the zoom controller 11 regenerates the image frame according to the display image format. At present, the display image format is consistent with the current image format, so the zoom controller 11 can generate the image frame for display by the display 13.

It should be noted that, in step S23, although the image signal is in a stable state, if the zoom controller 11 has not generated the image frame, the following steps S31 to S34 are performed.

As shown in step S31, the microprocessor 12 determines whether the current time series data includes the 3D format indication data. The judgment details of the 3D format indication data are as described in step S24, and therefore will not be described again.

If the current time series data includes the 3D format indication data, the display image format is set to the 3D format of the input signal, and the current time series data does not include the 3D format indication data, as shown in step S32 and step S33. Set the display image format to 2D format.

Since the zoom controller has not generated the image frame at this moment, there is no problem that the image format of the image frame being displayed does not match the image format of the image signal just received. However, the microprocessor 12 still needs to set the display image format to a 2D format or a 3D format of the input signal as a basis for the zoom controller 11 to generate an image frame.

As shown in step S34, the zoom controller 11 generates the image frame according to the display image format. For example, if the display image format is a 2D format, the zoom controller 11 generates an image frame in a 2D format for display by the display 13. Similarly, assuming that the display image format is a 3D format, the zoom controller 11 generates a 3D format for display by the display 13. Image of the image.

In summary, when the image signal is in a stable state, the microprocessor still continuously determines whether the current time series data includes the 3D format indication data, so as to set the current image format to a 3D format or a 2D format. And matching the display image format with the current image format, so that the display can output the image image normally, without actually re-plugging the connector of the high-definition multimedia interface or restarting the display device, so The object of the invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

1‧‧‧Display device that prevents the screen from displaying an abnormality when the signal is switched

11‧‧‧ Zoom controller

12‧‧‧Microprocessor

13‧‧‧ display

S21~S29‧‧‧Steps

S31~S34‧‧‧Steps

1 is a system diagram illustrating a preferred embodiment of a display device for preventing a screen display abnormality caused by a signal switching in accordance with the present invention; and FIG. 2 is a flow chart illustrating a screen display abnormality caused by a preventive signal switching corresponding to the preferred embodiment The steps of the display method.

S21~S29‧‧‧Steps

S31~S34‧‧‧Steps

Claims (10)

A display method for preventing a screen display from being abnormal caused by a signal switching is applicable to a display device for displaying a 2D picture or a 3D picture, the display device comprising a zoom controller and a microprocessor, the display method comprising the following steps: (A The zoom controller receives an image signal for the microprocessor to obtain a current timing data of the pair of image signals according to the image signal; (B) the microprocessor according to the current timing data and a preset initial timing The data determines whether the image signal is in a stable state; (C) if the image signal is in a stable state, the microprocessor determines whether the zoom controller has generated an image frame, and if the image signal is in an unstable state, the scaling The controller does not generate any image frame; (D) if the zoom controller has generated the image frame, the microprocessor determines whether the current time series data includes a 3D format indicator data; (E) if the current time series data includes The 3D format indication data, the microprocessor sets a current image format as the 3D format of the input signal, if the current timing data If the 3D format indication data is not included, the microprocessor sets the current image format to a 2D format; (F) the microprocessor determines whether the current image format matches a preset display image format, wherein the display image The format is preset to one of the 3D format and the 2D format of the input signal; (G) if the current image format does not match the display image format, setting the display image format to the current image format; and (H) the zoom controller regenerating the image frame according to the display image format. The method for displaying a screen display abnormality according to the first aspect of the patent application scope, wherein if the zoom controller has not generated the image screen in step (D), performing step (I): (I) The microprocessor determines whether the current timing data contains a 3D format indication data. The method for displaying a screen display abnormality according to the second aspect of the patent application scope, wherein the step (I) further comprises a step (J): (J) if the current time series data includes the 3D format indication data And setting a display image format to the 3D format of the input signal. If the current time series data does not include the 3D format indication data, setting the display image format to a 2D format. The method for displaying a screen display abnormality according to the third aspect of the patent application scope, wherein the step (J) further comprises a step (K): (K) the zoom controller generates the image according to the display image format Image screen. The method for displaying a screen display abnormality according to the protection signal switching according to the first aspect of the patent application scope, wherein in the step (B), the current time series data and the initial time series data respectively correspond to a signal frequency value and an analysis a value, and a scan frequency value, when the signal frequency value, the resolution value, and the scan frequency value corresponding to the current time series data are equal to the signal frequency value, the resolution value, and the scan frequency value respectively corresponding to the initial time series data, then The microprocessor determines that the image signal is in a steady state. A display device for preventing a screen from being displayed abnormally, comprising: a zoom controller for receiving an image signal; and a microprocessor for obtaining a current time series data of the image signal according to the image signal; wherein the micro The processor determines whether the image signal is in a stable state according to the current timing data and a preset initial timing data. If the image signal is in a stable state, the microprocessor determines whether the zoom controller has generated an image image. If the image signal is in an unstable state, the zoom controller does not generate any image frame. If the zoom controller has generated the image frame, the microprocessor determines whether the current time series data includes a 3D format indicator data. The current timing data includes the 3D format indication data, the microprocessor sets a current image format to a 3D format of the input signal, and if the timing data does not include the 3D format indication data, the microprocessor The image format is set to a 2D format, and then the microprocessor determines whether the current image format is A preset display image format is matched. If the current image format does not match the display image format, the display image format is set to the current image format, and then the zoom controller regenerates the image frame according to the display image format. , wherein the display image format is preset to the input One of the 3D format of the signal and the 2D format. The display device according to the sixth aspect of the application for the prevention of the signal switching causes the screen to display an abnormality. If the zoom controller has not generated the image frame, the microprocessor determines whether the current time series data includes a 3D format indication data. . The display device according to the seventh aspect of the patent application, wherein the current time series data includes the 3D format indication data, and the display image format is set to the 3D format of the input signal, If the current timing data does not include the 3D format indication data, the display image format is set to a 2D format. The display device according to the eighth aspect of the patent application, wherein the zoom controller causes the screen to display an abnormality, wherein the zoom controller generates the image frame according to the display image format. The display device according to the sixth aspect of the patent application, wherein the current time series data and the initial time series data respectively correspond to a signal frequency value, a resolution value, and a scan frequency value. The microprocessor determines that the image signal is stable when the signal frequency value, the resolution value, and the scan frequency value corresponding to the current time series data are equal to the signal frequency value, the resolution value, and the scan frequency value respectively corresponding to the initial time series data. status.