CN1319029C - Method for generating start-up screen of video playback device - Google Patents

Abstract

The invention provides a method for generating a startup picture of an image playing device, which comprises the following steps: providing a plurality of image data on the image playing device; (b) selecting an image data from the plurality of image data; (c) coding the selected image data; (d) storing the encoded image data into a memory; (e) reading the coded image data from the memory when the image playing device is restarted; (f) decoding the encoded image data; (g) and displaying the decoded image data on the image playing device.

Description

Method for generating start-up screen of video playback device

technical field

The invention relates to a method for generating a start-up picture, in particular to a method for generating a start-up picture of an image playing device.

Background technique

Please refer to FIG. 1. FIG. 1 is a functional block diagram of a known video playback device 10. The video playback device 10 includes a decoder 12 for decoding video data, and a temporary storage memory 13 for temporary storage of the decoder. 12. Decoded image data of the image file played on the image playback device 10, an encoder 14 for data encoding of the image data, and a flash memory 16 for storing a program code and the encoded image data.

Please refer to FIG. 2. FIG. 2 is a flow chart of a known method for generating a boot screen of an image playback device 10, which includes the following steps:

Step 100: Capture an image data from a dynamic graphics file 18 on the image playback device 10;

Step 102: Encoding the image data captured by the image playback device 10;

Step 104: storing the encoded image data into the flash memory 16;

Step 106: When the video playback device 10 is restarted, the encoded video data is read from the flash memory 16;

Step 108: Decoding the encoded image data;

Step 110 : Display the decoded video data on the video playback device 10 .

In step 100, when the image playback device 10 is playing a dynamic graphic file 18, the decoder 12 decodes the data of the dynamic graphic file 18 according to the program code stored in the flash memory 16, and the decoded image data is temporarily stored in The temporary memory 13 is then displayed on the video playback device 10 .

In step 102, when the image playback device 10 receives an image capture control signal, it captures an image data from the temporary memory 13 according to the image capture signal, and then the encoder 14 captures an image data according to the image data stored in the flash memory 16. The program code encodes the image data to generate an updated image data.

In step 104, whether the remaining space of the flash memory 16 is confirmed to be sufficient to accommodate the updated image data, if the remaining space of the flash memory 16 is not enough to accommodate the updated image data, then return to step 102 to renew the image data. Encoding generates another updated image data, and compares the generated updated image data with the remaining space of the flash memory 16, until the remaining space of the flash memory 16 is sufficient to accommodate the updated image data, first clear the flash memory 16 part of the space, and store the updated image data in the flash memory 16.

In steps 106-110, when the image playback device 10 is restarted, the encoded existing image data is read from the flash memory 16, and the existing image data is decoded into an image data by using the decoder 12, and the The decoded video data is displayed on the video playback device 10 .

In the known method for generating the start-up screen of the image playback device 10, only one captured image can be provided as the image data for generating the start-up screen, and multiple image frames cannot be provided as references for selection by the user, because the image data has When the data information is lost, and the display constant of the image data and the related data of the image disk are not detected, and the image data cannot be displayed on the image playback device 10 after decoding, the original appearance of the image data is completely presented.

Contents of the invention

Therefore, the main objective of the present invention is to provide a method for a user to select an image to generate a start-up screen of an image playback device, so as to solve the above-mentioned problems.

In order to achieve the above object, the present invention provides a method for generating a boot screen of an image playback device, which includes the following steps: (a) providing a plurality of image data on the image playback device; (b) using the plurality of image data (c) encoding the image data selected from the plurality of image data; (d) storing the encoded image data into a first memory; (e) re-opening the image playback device , read the encoded image data from the first memory; (f) decode the encoded image data after performing step (e); (g) display the decoded image data on the on the video playback device.

The present invention also provides a method for generating a boot screen of an image playback device, which includes the following steps: (a) detecting whether the image data on the image playback device is extracted from a dynamic graphics file; (b) if the image is played The image data on the device is extracted from the dynamic graphic file, then a plurality of image data is provided from the dynamic graphic file according to the image data, and one image data is selected from the plurality of image data, otherwise step (a) is directly selected (c) encode the image data selected in step (b); (d) store the encoded image data into a first memory; (e) when the image playback device is restarted, the The first memory reads the encoded image data; (f) after performing step (e), decoding the encoded image data; (g) displaying the decoded image data on the image playback device .

Compared with the known technology, the advantages of the present invention include: when capturing the start-up screen, it is directly captured from the image temporary storage area (Frame Buffer) in the temporary storage memory that is being played or is related to the currently playing image data. multiple frames, so no need to consume additional data, and as long as the video playback device can play, the present invention can capture data from various sources (for example: DVD-Video, DVD-Audio, VCD, SVCD, CDG, JPEG, Picture CD, etc.) image data; and the user can freely select the favorite picture from the adjacent pictures without worrying about the timing of capturing the picture is not ideal. In addition, when the present invention captures and stores the boot screen, it also takes into account the display parameters corresponding to the image data and the disk information (such as: Album, ID, Title, Track, file name, etc.) etc.), thus achieving the user's goal of "What You See Is What You Get (What You See Is What You Get)" and storing favorite pictures as one likes.

Description of drawings

Fig. 1 is the functional block diagram of the known video playback device;

Fig. 2 is a known flowchart for generating a boot screen of an image playback device;

Fig. 3 is a functional block diagram of the present invention to generate an image playback device;

FIG. 4 is a flow chart of the first stage of the method for generating the boot screen of the video playback device according to the first embodiment of the present invention;

FIG. 5 is a flow chart of the second stage of the method for generating the start-up screen of the video playback device according to the first embodiment of the present invention;

FIG. 6 is a flow chart of the third stage of the method for generating the start-up screen of the video playback device according to the first embodiment of the present invention;

FIG. 7 is a flow chart of the fourth stage of the method for generating the boot screen of the video playback device according to the first embodiment of the present invention;

FIG. 8 is a flow chart of the first stage of the method for generating the start-up screen of the video playback device according to the second embodiment of the present invention;

FIG. 9 is a flow chart of the second stage of the method for generating the start-up screen of the video playback device according to the second embodiment of the present invention;

FIG. 10 is a flow chart of the third stage of the method for generating the start-up screen of the video playback device according to the second embodiment of the present invention;

FIG. 11 is a flow chart of the fourth stage of the method for generating the start-up screen of the video playback device according to the second embodiment of the present invention; and

FIG. 12 shows image data and disc data displayed on the display device according to the present invention.

Description of reference symbols

10 Video playback device 12 Decoder

13 scratch memory 14 encoder

16 flash memory 18 dynamic graphics files

20 Video playback device 22 Decoder

24 encoders 26 flash memory

28 scratch memory 30 dynamic graphic files

32 Electrically Erasable Programmable Read-Only Memory

34 dynamic memory 36 discs

38 Display device 40 Disc information

42 image data 281 image temporary storage area

282 Summary Temporary Storage Area 283 Display Parameter Temporary Storage Area

Detailed ways

Please refer to FIG. 3 . FIG. 3 is a functional block diagram of the video playback device 20 of the present invention. The image playing device 20 comprises a decoder 22, which is used to decode the image data stored on the disc 36; an encoder 24, which is used to encode the image data; a flash memory (Flash) 26, which uses To store a program code (for example: the program code required for the operation of the image playback device 20) and encoded image data (for example: the boot screen); a temporary storage memory 28, which can plan a plurality of image temporary storage areas (FrameBuffer ) 281, abstract temporary storage area (Digest Buffer) 282, display parameter temporary storage area 283, image temporary storage area 281 is used to temporarily store image playback device 20 in the process of playing static graphics files or dynamic graphics files. A plurality of image data, for example: when the image playback device 20 is playing a dynamic graphic file conforming to the MPEG standard, these image temporary storage areas 281 can be used to store ReferencePicture (for example: I Picture or P Picture) and B Picture, abstract temporary storage The area (DigestBuffer) 282 is used to temporarily store information to be output to the display circuit, and the auxiliary data temporary storage area 283 is used to temporarily store display parameters related to these image data (for example: enlargement, reduction, color/brightness adjustment, etc.) , and disc-related information (such as: Album ID, Title, Track, file name, etc.) read from the disc 36; an electrically erasable programmable read-only memory (EEPROM) 32, used for final storage of image data display parameters, and the disk 36 data for storing the image data; and a dynamic memory 34 for temporarily storing the existing encoded image data and the encoded image data read from the flash memory 26 . In this embodiment, the flash memory (Flash) 26 and the electrically erasable programmable read-only memory (EEPROM) 32 can be replaced by various non-volatile (non-volatile) memories, and both can be set in the same The memory is partitioned by different addresses. The temporary memory 28 and the dynamic memory 34 can be replaced by various types of memory, preferably a volatile memory, but a non-volatile memory can also be used if there is special consideration. The temporary memory 28 and the dynamic memory 34 can also be set in the same memory but separated by different addresses.

Please refer to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, Fig. 4 is a flow chart of the first stage of the method for generating the start-up screen of the image playback device according to the first embodiment of the present invention, and Fig. 5 is a flow chart of the first embodiment of the present invention. The flow chart of the second stage of the method for the start-up screen of the video playback device. FIG. 6 is a flow chart of the third stage of the method for generating the start-up screen of the video playback device according to the first embodiment of the present invention. FIG. 7 is a flow chart of the first embodiment of the present invention. The flowchart of the fourth stage of the start-up screen of the video playback device, wherein the mark A is used to facilitate the connection between Figure 4 and Figure 5, and the marks B and C are used to facilitate the connection between Figure 5 and Figure 6 Relation, mark D is used for conveniently linking the relation between Fig. 6 and Fig. 7, and it produces the method for the start-up picture of image playing device, comprises the following steps:

Step 120: The image playback device 20 receives an image capture control signal;

Step 122: providing a plurality of video data on the video playback device 20;

Step 124: Select an image data from the plurality of image data;

Step 126: Detect the size of the selected image data, and execute steps 128 and 144 at the same time;

Step 128: According to the size of the image data, determine its corresponding preset quantization level (Quantization Level) parameter;

Step 130: The encoder 24 encodes the image data according to the program code stored in the flash memory 26 and the quantization level parameters determined in step 128, to generate an encoded image data;

Step 132 : Compare whether the size of the encoded image data is larger than the remaining storable space of the flash memory 26 . If so, then proceed to step 134, if not, then proceed to step 136;

Step 134: Adjust the quantization level parameter to an updated quantization level parameter, proceed to step 130;

Step 136: Check whether there is an existing coded image data stored in the flash memory 26, if so, read out the existing coded image data stored in the flash memory 26 and transfer to the dynamic memory 34, go to step 138; if not, go to step 140;

Step 138: Merge the encoded image data with the existing encoded image data to form another encoded image data, proceed to step 140;

Step 140: clear part of the space in the flash memory 26, proceed to step 142;

Step 142: read the updated image data from the dynamic memory 34 and store it in the flash memory 26;

Step 144: Read the relevant information of the plurality of image data and the display parameters of the plurality of image data from the disc 36 storing the plurality of image data;

Step 146: Store the relevant information of the disk 36 storing the plurality of image data and the display parameters of the image data into the display parameter temporary storage area 283;

Step 148: After determining that the encoded image data can be stored in the remaining storable space of the flash memory 26, store the relevant information and images of the disks 36 of a plurality of image data temporarily stored in the display parameter temporary storage area 283 The display parameters of the data are stored in the electrically erasable programmable read-only memory (EEPROM) 32;

Step 150: read the encoded image data from the flash memory 26 when the image playback device 20 is restarted;

Step 152: Decoding the encoded image data;

Step 154: Read the disk data and display parameters of the image data from the EEPROM 32;

Step 156 : Display the decoded image data on the image playback device 20 .

In steps 120-124, when the image player 20 is playing a dynamic graphic file 30 (for example: playing a movie compressed on the disc 36 in MPEG I or MPEG II format), and receives an image When capturing the control signal (for example: the user presses the button of "capturing image data" on the image playback device 20), a plurality of image data currently temporarily stored in the image temporary storage area 281 and temporarily stored in the display are read. The display parameters and disc information of the parameter temporary storage area 283 are output to the display device 38 through the digest buffer area (Digest Buffer) 282 . At this time, the screen displayed by the display device 38 is shown in FIG. 12 . When the image playback device 20 receives a selection signal (for example: the user selects a favorite image data from these multiple image data by the knob on the image playback device 20, and presses the "OK" button), The image playing device 20 selects a specific image data and its corresponding display parameters and disc information from a plurality of image data according to the selection signal. Because the image player 20 normally plays the dynamic graphics file 30, it will originally display the related image data (for example: in the MPEG specification, the Reference Picture and B Picture related to the currently played image) and the corresponding display parameters. It is stored in the temporary memory 28 in advance, and the steps 120-124 are simply to display and select the image data and display parameters already stored in the temporary memory 28, so it does not consume too much additional resources.

In steps 126-128, the image playback device 20 detects the size of the image data, reads the data of the disk 36 of the plurality of image data and the display parameters of the image data, and determines a preset according to the size of the image data. The quantization stratum parameter of .

And transfer the image data originally stored in the temporary memory 28 , the display parameters of the image data, and the information of the disc 36 into the EEPROM 32 .

The quantization level parameter can determine the quality and data size of the encoded image data. The display parameters of the image data determine how the current image data is presented. For example: the user may select to zoom in when enjoying static graphics files (such as JPEG, TIFF image files) or dynamic graphics files (such as movies compressed on disc 36 in MPEG I or MPEG II format). , zoom out, change color or brightness, 16:9 wide screen display, or Letter Box, Pan Scan 4:3 traditional screen display. The display parameters of the image data determine the actual presentation mode of the current image data. The known image playback device 20 does not store these display parameters, so it may happen that the user wants to save the currently presented image frame (for example: the image frame after the original image data is magnified nine times and the brightness is increased by 30%). The dilemma of being unable to do so. In this embodiment, in addition to the image data itself, the corresponding display parameters are stored, so the user can achieve the purpose of "What You See Is What You Get" and store favorite images as desired.

The disc 36 currently being played by the video playback device 20 may store data related to static or dynamic graphic files being played. For example: DVD-Video discs may store AlbumID, Title, and Track information; VCD/SVCD discs may store Album ID and Track information; Picture CD discs may store JPEG file names, etc. When the user captures the startup screen, he may wish to display these information together. Therefore, steps 144-158 still include operations of reading and storing disc information. Please refer to Figure 12. When the present invention displays the image data 42 of the boot screen, it can simultaneously read and display disc information 40 such as Album ID and file name, so that users can create a more personalized boot screen.

In step 128 , the image playback device 20 can determine which preset quantization level parameters should be used for different image data sizes by looking up a table; or use the same preset quantization level parameters regardless of the size of the image data.

In steps 130-134, the encoder 24 encodes the image data according to the program code stored in the flash memory 26 and the corresponding quantization level parameter of the image data, and generates encoded image data. Then check whether the remaining storage space of the flash memory 26 is enough to accommodate the encoded image data. If the remaining storable space of the flash memory 26 is not enough to accommodate the encoded image data, then the quantization level parameter is adjusted to an updated quantization level parameter, and the encoder 24 is then updated according to the program code stored in the flash memory 26 and the updated The quantization level parameter performs data encoding on the image data to generate another encoded image data, and compares the generated encoded image data with the remaining storable space of the flash memory 26 again until the flash memory 26 The remaining storable space of is sufficient to accommodate the encoded image data.

The flash memory 26 includes multiple banks of memory cells. When clearing the contents of the flash memory 26, it must be cleared in units of banks. The size of a bank varies depending on the brand and type of the flash memory 26, for example, it can be 64KB. In order to make the use of the flash memory 26 more efficient.

In steps 136-142, if there is an existing coded image data in the flash memory 26, then all the existing coded image data is first read out and temporarily stored in the dynamic memory 34 Afterwards, the encoded image data is combined with the existing encoded image data, and part of the space in the flash memory 26 is cleared before the combined image data is stored in the flash memory 26. In this way, even if the previously set startup screen has been stored in the flash memory 26, it will not be deleted, but will be stored in the flash memory 26 together with the newly added startup screen, and then the user can view Choose a different boot screen for different situations. If no other existing coded image data is stored in the flash memory 26 , then a part of the space in the flash memory 26 is cleared, and the coded image data is stored in the flash memory 26 .

In steps 144-148, first read the relevant information of the plurality of image data and the display parameters of the plurality of image data from the disc 36 storing the plurality of image data, and then store the plurality of image data The relevant information of the disk 36 and the display parameters of the image data are stored in the display parameter temporary storage area 283, and then after it is determined that the encoded image data can be stored in the remaining storable space of the flash memory 26, it is stored in the temporary storage area 283. The related information of the discs 36 of a plurality of image data in the display parameter temporary storage area 283 and the display parameters of the image data are stored in the EEPROM 32. So far, the part of selecting and saving the startup screen has been completed.

The following is the steps for reading the boot screen when the video playing device 20 is turned on. In steps 150-156, when the image playback device 20 is restarted, read the encoded image data from the flash memory 26, use the decoder 22 to decode and restore the encoded image data to an image data; Read the disc data and the display parameters of the selected image data from the EEPROM 32, and display the decoded image data on the video playback device according to the disc data and the display parameters of the selected image data 20, disc data can also be displayed together. The display result is shown in Figure 12. The order of step 152 and step 154 can be interchanged, or can be performed synchronously.

Please refer to Figure 3, Figure 8, Figure 9, Figure 10 and Figure 11. Fig. 3 is a functional block diagram of the video playback device according to the present invention; Fig. 8 is a flow chart of the first stage of the method for generating the boot screen of the video playback device according to the second embodiment of the present invention; Fig. 9 is a video generated according to the second embodiment of the present invention The flow chart of the second stage of the method for playing the start-up screen of the device. FIG. 10 is the flow chart of the third stage of the method for generating the start-up screen of the video playback device according to the second embodiment of the present invention. FIG. 11 is the flow chart of the second embodiment of the present invention. The flow chart of the fourth stage of the method for playing the startup screen of the device, wherein the mark A is used to facilitate the connection between Figure 8 and Figure 9, and the marks B and C are used to facilitate the connection between Figure 9 and Figure 10 relationship, mark D is used to facilitate the connection between Figure 10 and Figure 11. In addition, the difference between this embodiment and the first embodiment is that steps 158-164 are used to replace steps 122-124, and the rest are the same steps. This is not repeated, so steps 158-164 are stated as follows:

Step 158 : Detect whether the video file played by the video playback device 20 is a dynamic graphic file, if yes, go to step 162 , if not, go to step 160 .

Step 160: Select and display the static graphics file on the playback device 20, and then proceed to Step 126.

Step 162: read a plurality of image data from the temporary storage 28;

Step 164: The image playing device 20 receives a selection signal, and selects an image data according to the selection signal.

In steps 158-164, when the image playback device 20 plays an image file (for example: a static graphic file, or a dynamic graphic file), and receives an image capture control signal, it detects that the image playback device 20 is in the image file. If the data status of the file is a dynamic graphics file, multiple image data temporarily stored in the temporary memory 28 are read and displayed on the user interface. When the image playback device 20 receives a selection signal, it selects an image data among a plurality of image data according to the selection signal; if its data status is a static graphic file, the static graphic file is displayed on the user interface, When the image playing device 20 receives a selection signal, the static graphics file is used as the image data of the startup screen.

In the present invention, the method for generating the boot screen of the image playback device in the first embodiment and the second embodiment both use an EEPROM to store the disk data and the display parameters of the selected image data, However, the EEPROM 32 may not be used, and the disc data and the display parameters of the selected image data are stored in the flash memory 26 together with the encoded image data.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the patent of the present invention.

Claims (14)

1. A method for generating a boot screen of an image playback device, comprising the following steps: (a) detecting whether the image data on the image playback device is extracted from a dynamic graphics file; (b) if the image data on the image playback device is extracted from the dynamic graphic file, then provide a plurality of image data from the dynamic graphic file according to the image data, and select an image data from the plurality of image data, Otherwise, directly select the image data of step (a); (c) encoding the image data selected in step (b); (d) storing the encoded image data into a first memory; (e) read the encoded image data from the first memory when the image playback device is restarted; (f) after performing step (e), decoding the encoded image data; (g) displaying the decoded video data on the video playback device. 2. The method as claimed in claim 1, further comprising step (h): quantizing the image data selected in step (b), wherein step (c) is encoding the image data quantized in step (h). 3. The method according to claim 2, further comprising detecting the size of the image data selected in the step (b), wherein the step (h) is a quantization step ( The selected image data in b). 4. The method according to claim 2, further comprising detecting whether the remaining storable space of the first memory can accommodate the image data generated after encoding in step (c), if the remaining storable space of the first memory can accommodate For the image data generated after encoding in step (c), step (d) is performed; otherwise, the image data selected in step (b) is further quantized. 5. The method of claim 1, wherein the first memory is a flash memory. 6. The method according to claim 1, further comprising merging the image data in the first memory with the image data encoded in step (c) before performing step (d), wherein step (d) is to The two merged image data are stored in the first memory. 7. The method as claimed in claim 6, further comprising clearing part of the space in the first memory before performing step (d). 8. The method according to claim 1, further comprising detecting display parameters of the image data selected in step (b), and storing the display parameters of the image data selected in step (b) into a second memory . 9. The method according to claim 8, further comprising, before performing step (g), reading the display parameters of the image data selected in step (b) from the second memory, wherein step (g) will be based on The display parameter displays the image data decoded in step (f) on the image playing device. 10. The method of claim 8, wherein the second memory is an EEPROM. 11. The method of claim 1, further comprising storing the disc data storing the image data selected in step (b) into a second memory. 12. The method as claimed in claim 11 , further comprising reading the disc data from the second memory before performing step (g), wherein step (g) converts step (f) according to the disc data The decoded image data is displayed on the image playing device. 13. The method of claim 11, wherein the second memory is an EEPROM. 14. An image playback device, used to implement the method as claimed in claim 1.

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