CN100450170C - Method and device for capturing continuous pictures of digital images - Google Patents

Abstract

A method and device for capturing continuous frames of digital images. This method adds a function of capturing multiple continuous frames in digital images to a digital television or digital video recording device, so that continuous wonderful frames in digital images can be presented on the screen for users to watch and select, and provides a storage function so that these wonderful frames can be saved and used for subsequent viewing and display, ultimately achieving the purpose of capturing and saving the best wonderful frames.

Description

Method and device for capturing continuous frames of digital images

technical field

The present invention relates to a method and device for capturing images, and in particular to a method and device for providing continuous frames of digital images that can be captured.

Background technique

At present, TV broadcasting has entered the era of digitalization, and its programs are produced and transmitted in a digitally compressed manner. Using this digital technology can not only provide higher-quality image signals, but also improve the image quality caused by signal interference in traditional TV. Disadvantages such as distortion or blurring. In addition, since the broadcasting programs are all transmitted in a digital way, the receiving end only needs to use a storage device to record and save the digital broadcasting data, which is very convenient.

In addition to the above-mentioned ways of watching radio and television programs, Digital Video Disc (DVD) provides another way to watch programs. , playing on the TV at home can also achieve the audio-visual entertainment effect provided by radio programs.

However, when using TV to watch radio programs or DVDs, you often watch wonderful program segments. At this time, you often hope to record this wonderful picture, but because these programs are continuous video images, even if you use general The stop frame function of video recording equipment can only capture a single frame at a time, and because the timing of capturing frames is not easy to control, it is often impossible to accurately capture the most exciting frames. In addition, ordinary video recording devices do not have Provides the function of saving pictures, it would be a pity if wonderful pictures are missed due to these reasons.

Contents of the invention

The object of the present invention is to provide a method for capturing continuous frames of digital images, by capturing multiple consecutive frames in digital images, and displaying these frames on the display screen for users to watch, so as to achieve the best capture The purpose of the best wonderful picture.

Another object of the present invention is to provide a device for capturing continuous frames of digital images, by using one capturing unit to capture multiple consecutive frames in digital images for the user to select, and storing the selected frames with one storage unit The picture, and to achieve the purpose of saving the best wonderful picture.

The present invention proposes a method for capturing continuous frames of a digital image, which includes the following steps: First, continuously receive a piece of digital image data, wherein the digital image data includes a plurality of image frames, then decode these image frames, and store the digital image at the same time. A parameter of the image data, and then play the decoded image frame, wherein, when receiving a capture command, according to the parameter of the digital image data, capture more than one part of the digital image data at a preset time interval Captured frames, the time interval is greater than the interval between two adjacent image frames in the digital image data, then decode these captured frames, store the captured frames at the same time, and finally display the decoded captured frames.

The method for capturing continuous frames of a digital image according to a preferred embodiment of the present invention further includes selecting one of the captured frames as a selected frame, and performing an editing function on the selected frame.

According to the method for capturing continuous frames of a digital image in a preferred embodiment of the present invention, the editing function includes saving the selected frames.

According to the method for capturing continuous frames of a digital image in a preferred embodiment of the present invention, the above-mentioned editing function includes setting the selected frame as one of a startup screen, a standby screen and a menu background screen.

According to the method for capturing continuous frames of a digital image in a preferred embodiment of the present invention, the above-mentioned parameters include one of the playback rate (Frame rate), video format, and encoding method of image frames in the digital image data.

According to the method for capturing continuous frames of a digital image according to a preferred embodiment of the present invention, the step of displaying the decoded captured frames includes displaying in one of multiple windows and a single window.

According to the method for capturing continuous frames of a digital image in a preferred embodiment of the present invention, the above-mentioned digital image data includes one of digital broadcast program data and optical disc storage data.

The invention proposes a device for capturing continuous frames of digital images, which includes a receiving unit, a decoding unit, a playing unit, a capturing unit and a storage unit. Wherein, the receiving unit is used to continuously receive a piece of digital image data, wherein the digital image data includes a plurality of image frames, and the decoding unit is used to decode these image frames and obtain the parameters of the digital image data, and the playback unit is coupled to So far, the decoding unit is used to play the decoded image frame. In addition, the capturing unit is coupled to the above-mentioned receiving unit, decoding unit, and playing unit, and is used to, according to the previously obtained digital image data, receive a capturing instruction. Parameters, with a preset time interval, capture a plurality of captured frames in the digital image data, and send these captured frames to the decoding unit for decoding, and display the decoded captured frames by the playback unit, in addition, The storage unit is coupled to the capture unit for storing the captured frames captured by the capture unit.

According to the device for capturing continuous frames of digital images described in a preferred embodiment of the present invention, the above-mentioned receiving unit includes a demodulator (Demodulator), a demultiplexer (Demultiplexer) and a bit stream (Bit stream) buffer device. Wherein, the demodulator is used to demodulate the received digital image data into a transport stream (Transport Stream, TS) data format, and the demultiplexer is coupled to the demodulator to convert the transport stream with the The digital image data in the data format is restored to original image data (Video raw data). In addition, the bit stream buffer is coupled to the demultiplexer for temporarily storing the original image data, waiting to be decoded by the decoding unit.

According to the device for capturing continuous frames of digital images in a preferred embodiment of the present invention, the above-mentioned receiving unit further includes a tuner (Tuner), which is used to adjust the frequency to receive a piece of digital broadcast data, and send the digital broadcast data sent to the demodulator.

According to the device for capturing continuous frames of digital images in a preferred embodiment of the present invention, the playback unit includes a frame buffer and a display screen. Wherein, the frame buffer is used to temporarily store the image frames, and the display screen is used to display the image frames stored in the frame buffer.

According to the device for capturing continuous frames of digital images in a preferred embodiment of the present invention, the function of the above-mentioned capturing unit further includes selecting one of the captured frames as a selected frame, and performing an edit on the selected frame Function.

Because the present invention adopts the structure of capturing multiple consecutive frames in digital images, it can present the continuous wonderful frames in digital images in front of the screen for users to watch and select, and provides a storage function so that these wonderful frames can be discovered And save it, to achieve the purpose of capturing and saving the best wonderful picture.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

FIG. 1 is a flowchart of a method for capturing continuous frames of a digital image according to a preferred embodiment of the present invention.

FIG. 2 is a block diagram of a device for capturing continuous frames of digital images according to a preferred embodiment of the present invention.

FIG. 3 is a detailed block diagram of a receiving unit of a device for capturing continuous frames of digital images according to a preferred embodiment of the present invention.

110: receiving unit

120: memory unit

130: decoding unit

140: Play unit

150: Extraction unit

S200: receiving digital image data

S210: Decode the image frame, and store the parameters of the digital image data at the same time

S220: Play video screen

S230: Determine whether a capture command is received

S240: continue to play the video image

S250: Capture a plurality of captured frames in the digital image data

S260: Decode the captured image and store the captured image at the same time

S270: displaying the captured screen

S280: Select a selection screen

S290: Execute an editing function on the selected screen

310: Tuner

320: Demodulator

330: Demultiplexer

340: bitstream buffer

Detailed ways

FIG. 1 is a flowchart of a method for capturing continuous frames of a digital image according to a preferred embodiment of the present invention. Please refer to Fig. 1, this embodiment utilizes a plurality of consecutive frames in the digital image to be captured and presented on the screen in the form of a single or multiple windows for the user to view and select, and to provide the user with a convenient Pipeline, capture wonderful pictures.

First, a piece of digital image data is continuously received (step S200), wherein the digital image data includes multiple image frames, and the digital image data can be digital broadcast program data or stored in other storage devices such as optical discs (such as DVD or VCD). Recorded digital audiovisual data.

Next, according to the coding format of the digital video data, use an appropriate decoding device to decompress and decode the digital video data into still pictures one by one, and store the parameters of the digital video data while decoding (step S210 ). Wherein, the parameters of the above-mentioned digital image data may be the playback rate (Frame rate) of the image frames in the digital image data, video format or coding method, and the types and numbers thereof are not limited.

Then start to play the decoded video frames (step S220), wherein, because these video frames are displayed in a fast and continuous manner when playing, and utilize the characteristics of human visual retention, we think it is a continuous frame , at this time, if you freeze the image frame, you can see a still image.

The following steps promptly use the above-mentioned principle to obtain the captured image. First, while playing the image image, start detecting and judging whether a capturing command has been received (step S230), if the capturing command has not been received, continue to play image frame (step S240), however, if the capture command is received, the corresponding specific time points will be searched in the digital image data according to the previously recorded digital image data parameters and the preset time interval frame data, thereby obtaining a plurality of captured frames (step S250). Among them, this time interval can be preset by the user to capture a picture every 1 second, every 1/2 second or every 1/4 second, and the scope is not limited. Users can freely set it according to their needs and preferences. Certainly.

Similarly, these captured frames will also be decoded by an appropriate decoding device, and will be temporarily stored for subsequent access by the user (step S260). Finally, these decoded captured pictures are displayed on the screen (step S270), wherein, the mode of displaying these captured pictures can be continuously played in a single window (that is, one is displayed at a time, and replaced every fixed time) The captured images are displayed in front of the user in the manner of sequential playback with multiple viewing windows (for example, cutting the image into nine blocks, and each block displays images at different time points).

At this point, the user can select an optimal selected frame from the displayed captured frames (step S280 ), and execute an editing function on the selected frame (step S290 ). Wherein, the editing function can be to store the selected picture in the memory of the TV or video equipment, or it can also be to set the selected picture as the start-up picture, standby picture or menu background picture of the TV or video equipment, etc. limit its scope.

FIG. 2 is a block diagram of a device for capturing continuous frames of digital images according to a preferred embodiment of the present invention. Please refer to FIG. 2. This embodiment is used to illustrate an image capture device with the function of capturing continuous pictures. By disposing it in an audio-visual device such as a TV or video recording equipment, it is possible to capture wonderful pictures in a dynamic image. Take it down and save it after screening for subsequent viewing and display.

The device for capturing continuous frames of digital images in this embodiment includes a receiving unit 110 , a storage unit 120 , a decoding unit 130 , a playing unit 140 and a capturing unit 150 . Wherein, the receiving unit 110 is used for continuously receiving a piece of digital image data, and the digital image data includes a plurality of image frames. Wherein, the digital image data may be digital broadcast program data or digital audio-visual data recorded in other storage devices such as optical discs.

Next, the video frames received by the receiving unit 110 are sent to the decoding unit 130 via the capture unit 150, and the decoding unit 130 uses an appropriate decoding method to decode the video frames according to the encoding format of the digital audio-visual data. While decoding, the parameters of the digital image data are also obtained. Wherein, the parameter may be the playback rate of the image frames in the digital image data, the video format or encoding method, etc.

Then, the playback unit 140 will then play out the decoded image frames for users to watch. The above steps are the process of playing digital broadcasting programs on a general digital TV. Next, the function of capturing digital image continuous frames of the device of the present invention will be introduced. .

When the user sees a wonderful radio program or DVD program, he can send a retrieval command to the retrieval unit 150 by pressing the control button on the remote controller or the TV, and the retrieval unit 150 That is, according to the parameters of the previously obtained digital image data and the time interval preset by the user, multiple captured frames are captured from the digital image data, and these captured frames are similarly sent to the decoding unit 130 for decoding, And it is displayed on the display screen by the playback unit 140 . Wherein, the manner of displaying these captured images can be continuously played in a single window or sequentially played in multiple windows to present the captured images in front of the user.

In addition, the capturing unit 150 will also first transmit these captured images to the storage unit 120 for storage for subsequent selection. Wherein, the playback unit 140 may further include a code frame buffer (Frame buffer), which is used to temporarily store these decoded image frames, so as to provide buffering for the data access of the image frames between the decoding unit 130 and the display screen. .

Of course, as described in the previous embodiment, the capture unit 150 can further perform an editing function on the selection screen selected by the user on the display unit 140, and this editing function can be to store the selection screen on a TV or a video recording device In the memory, or also can be set this selected picture as the startup picture of TV or video equipment, standby picture or menu background picture etc., do not limit its range.

In addition, in an embodiment, the above-mentioned receiving unit 110 may include a tuner (Tuner), a demodulator (Demodulator), a demultiplexer (Demultiplexer) and a bit stream (Bit stream) buffer , the serial connection method is shown in the detailed block diagram of the receiving unit 110 in FIG. 3 .

As shown in FIG. 3 , first, the demodulator 310 adjusts the frequency to receive a piece of digital broadcast data transmitted from the outside, and then transmits the digital broadcast data to the demodulator 320 . At this point, the demodulator will demodulate the received digital image data into digital image data in the transport stream (Transport Stream, TS) data format, and hand over the digital image data in the transport stream data format to the demultiplexer 330 The data is restored to original video data (Video raw data), and the raw video data can be used as a data file provided to the decoding unit (not shown) for decoding. In addition, in this embodiment, a bit stream buffer 340 is further used, and the bit stream buffer 340 can be used as a decoding unit by disposing the bit stream buffer 340 between the demultiplexer 330 and the decoding unit (not shown). It is used to access the buffer of raw image data.

To sum up, in the method and device for capturing continuous frames of digital images of the present invention, by adding a function of continuously capturing multiple frames in digital images to digital television or digital video equipment, digital images can be The continuous wonderful pictures are presented in front of the screen for users to watch and select, and a storage function is provided, so that these wonderful pictures can be saved for subsequent viewing and display, and finally achieve the purpose of capturing and saving the best wonderful pictures.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of protection of the invention shall be defined by the scope of the appended patent application.

Claims (17)

1, a kind of method of acquisition of digital video continuous pictures is characterized in that it comprises the following steps:

Receive a digital image data continuously, wherein this digital image data comprises a plurality of image frames;

Those image frames of decoding store a parameter of this digital image data simultaneously;

Those image frames behind the broadcast decoder;

When receiving an acquisition instruction, according to this parameter of this digital image data,, capture a plurality of acquisition pictures in this digital image data with a predefined time interval, should be interval greater than the interval of adjacent two image frames in the digital image data;

Decoding, those capture pictures, store those acquisition pictures simultaneously; And

Show decoded those acquisition pictures.

2, the method for acquisition of digital video continuous pictures according to claim 1 is characterized in that it more comprises:

One of them chooses picture as one to select those acquisition pictures; And

This is chosen picture carry out an editting function.

3, the method for acquisition of digital video continuous pictures according to claim 2, this chooses picture to it is characterized in that wherein said editting function comprising storage.

4, the method for acquisition of digital video continuous pictures according to claim 2, it is characterized in that wherein said editting function comprise setting this choose picture be start-up picture, standby picture and menu background picture one of them.

5, the method for acquisition of digital video continuous pictures according to claim 1, it is characterized in that wherein said parameter comprise those image frames in this digital image data playback rate, film format, coded system one of them.

6, the method for acquisition of digital video continuous pictures according to claim 1, the step that it is characterized in that wherein showing decoded those acquisition pictures comprise in one of them mode of multi-window and single form and showing.

7, the method for acquisition of digital video continuous pictures according to claim 1, it is characterized in that wherein said digital image data comprise digital broadcast program data and laser disc storage data one of them.

8, a kind of device of acquisition of digital video continuous pictures is characterized in that it comprises:

One receiving element is suitable for receiving a digital image data continuously, and wherein this digital image data comprises a plurality of image frames;

One decoding unit, those image frames that are suitable for decoding, and obtain one of this digital image data parameter;

One broadcast unit is coupled to this decoding unit, is suitable for those image frames behind the broadcast decoder;

One acquisition unit, be coupled to this receiving element, this decoding unit and this broadcast unit, be suitable for when receiving an acquisition instruction, this parameter according to this digital image data, with a predefined time interval, capture a plurality of acquisition pictures in this digital image data, should be interval greater than the interval of adjacent two image frames in the digital image data, and those acquisition pictures are sent to this decoding unit decodes, look by this broadcast unit and show decoded those acquisition pictures; And

One storage element is coupled to this acquisition unit, is suitable for storing those acquisition pictures that this acquisition unit captures.

9, the device of acquisition of digital video continuous pictures according to claim 8 is characterized in that wherein said receiving element comprises:

One demodulator, this digital image data that is suitable for being received is demodulated into a transmit flow data form;

One de-multiplexer is coupled to this demodulator, is suitable for this digital image data of this transmit flow data form is reduced to raw video data; And

One bit element flow buffer is coupled to this de-multiplexer, is suitable for temporary these raw video data, waits for and being decoded by this decoding unit.

10, the device of acquisition of digital video continuous pictures according to claim 8 is characterized in that wherein said receiving element more comprises:

One tuner is suitable for adjusting frequency receiving a digital broadcast data, and this digital broadcast data is sent to this demodulator.

11, the device of acquisition of digital video continuous pictures according to claim 8 is characterized in that wherein said broadcast unit comprises:

One yard frame buffer is suitable for temporary those image frames; And

One display screen is suitable for showing those image frames that are stored in this yard frame buffer.

12, the device of acquisition of digital video continuous pictures according to claim 8 is characterized in that the function of wherein said acquisition unit more comprises:

One of them chooses picture as one to select those acquisition pictures; And

This is chosen picture carry out an editting function.

13, the device of acquisition of digital video continuous pictures according to claim 12, this chooses picture in this storage element to it is characterized in that wherein said editting function comprising storage.

14, the device of acquisition of digital video continuous pictures according to claim 12, it is characterized in that wherein said editting function comprise setting this choose picture be start-up picture, standby picture and menu background picture one of them.

15, the device of acquisition of digital video continuous pictures according to claim 8, it is characterized in that wherein said parameter comprise those image frames in this digital image data playback rate, film format, coded system one of them.

16, the device of acquisition of digital video continuous pictures according to claim 8, the method that it is characterized in that wherein showing decoded those acquisition pictures comprise in one of them mode of multi-window and single form and showing.

17, the device of acquisition of digital video continuous pictures according to claim 8, it is characterized in that wherein said digital image data comprise digital broadcast program data and laser disc storage data wherein it

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