KR20000003088A - Multi mode camcorder and control method thereof - Google Patents

Abstract

PURPOSE: A multi mode camcorder and a control method thereof are provided to obtain the frame still image for a personal computer from the mobile image recorded with the camcorder mode. CONSTITUTION: The multi mode camcorder comprises: a mode selecting unit(50) for selecting a camcorder mode and a digital still camera mode; a micro controller(40) for generating the control signal according to the selected mode; and a charge coupled device(CCD) differently outputting the image signal according to the output control signal.

Description

Multimode camcorder and its control method

The present invention relates to a multi-mode camcorder and a control method thereof, which operate in a camcorder mode and a digital still camera (DSC) mode, respectively, and select and store a screen of a TV or personal computer (PC) through an external input. In particular, if you select the video that you like the most among the videos recorded on the recording medium in the camcorder mode, the selected video is compressed to make a still image, and the screen for digital still camera (DSC) can be created. The present invention relates to a multi-mode camcorder and a method of controlling the same, in which a CCD drive is selectively driven in units of a field or a frame to be recorded.

Conventional CD (In case of system implementation based on CCD and its driving, interlacing method to connect camcorder to TV, interlacing method, and sequential scanning to connect digital still camera to personal computer) Progressive).

Therefore, when the subject is to be recorded on the recording medium by using the camcorder, the interlaced scanning method is used, and when the user wants to watch a video on the recorded subject through the TV, the viewer can watch it without difficulty.

If you want to take a still image of a subject using a digital still camera, you can record in sequential scanning. If you display a still image of the recorded subject as a single screen on your personal computer, you can display it. It is possible.

However, in the prior art as described above, when adding a function of a digital still camera to a camcorder, the camcorder and the digital still camera cannot be operated in a normal state because the recording method is different from the main still. There was a problem that a still image for a personal computer could not be obtained even in a moving picture. It also lacked the ability to record video using a camcorder first for instant capture and then extract still images for digital still cameras through frame playback.

Accordingly, an object of the present invention for solving the conventional problems as described above is to enable the CDC to be selectively driven in a field unit or a frame unit to enable driving according to the purpose. A multi-mode camcorder and a control method thereof are provided.

Another object of the present invention is to provide a multi-mode camcorder and a control method thereof, by which a frame still picture for a personal computer can be obtained from a moving picture recorded in the camcorder mode.

It is still another object of the present invention to provide a multi-mode camcorder and a control method thereof capable of extracting a still image for a digital still camera through frame reproduction in a moving picture recorded in the camcorder mode.

1 is a block diagram of a multi-mode camcorder of the present invention.

2 is an operation process diagram for a control method of a multi-mode camcorder of the present invention;

3 is an operation flowchart of a process of creating a still picture in a video being played back in FIG.

*** Explanation of symbols for main parts of drawing ***

16: drive signal generator 17: timing signal generator

20: image processing unit 30: digital signal processing unit

40: microcontroller 50: mode selector

60: key input unit 70: switching unit

80: DRAM 90: memory controller

100: Jpec IC 110: memory

The present invention for achieving the above object is a mode selection unit for selecting a camcorder mode and a digital still camera mode, a microcontroller for generating a control signal in accordance with the mode selected above, and outputs an image signal in accordance with the control signal output from the Characterized in that it comprises a solid-state image pickup device to vary.

In addition, the present invention is a digital signal processing unit for digitizing the video signal output from the CD to the frame unit when the digital still camera mode selected, and configured to output the frame screen, and the first storage for storing the output of the digital signal processing unit Means, and second storage means for compressing and storing the stored data again.

The present invention provides a reproduction signal processing unit for reproducing and outputting a video signal from a recording medium, a digital signal processing unit for constructing a frame-based screen of the reproduced field signal, a video output unit for outputting the digitized video signal, A key input unit for selecting the video output screen, first storage means for storing the image signal in the frame unit, and a second frame for capturing, compressing and storing the image frame of the first storage means according to the input of the key input unit. Characterized in that it comprises a storage means.

The present invention includes a first step of checking a selected mode, a second step of picking up an image signal from a solid state image pickup device in frame units when the digital still camera mode is selected, and digitally processing and storing the captured image signal. And a fourth step of compressing and storing the stored video signal in a predetermined format again.

The present invention includes a first step of reproducing and outputting a video signal recorded on a recording medium, a second step of outputting the output video signal in units of frames and storing it in a first storage means and outputting the same to a video output means; And a third step of capturing, compressing, and storing the image signal selected from the user among the output image signals in the second storage means.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a multi-mode camcorder of the present invention. As shown in FIG. 1, a digital image is obtained after image processing of a moving image of a subject photographed through a lens and a CD according to a CCD drive signal. The image processing unit 20 converts and outputs the data, a key input unit 60 for a user to select one of a camcorder mode, a digital still camera mode, a video catch mode, and an external input mode, and the key input unit 60. When the desired mode is selected through the microcontroller 40 to determine whether to read the video signal from the CD in the field unit or frame unit, and outputs the mode control signal accordingly, and the mode control signal of the microcontroller A mode selector 50 for generating and outputting a timing signal to drive the CD according to the present invention, and according to the timing signal provided from the mode selector 50 The image processing unit 20 reads out and processes the image of the sieve, converts the processed signal into a digital signal, and outputs the digital signal inputted through the image processing unit 20 in the camcorder mode. The recording medium is recorded on the recording medium through the processing unit 6, and the frame image of the digital image is stored in the DRAM 80 in the digital still camera mode, or from the recording medium through the playback signal processing unit 8 in the video catch mode. When the signal to be reproduced is input, the digital signal processor 30 and the digital signal processor 30 for storing the reproduced signal in the frame unit or displaying the same through the video output unit 18 are displayed. DRAM 80 for storing the frame signal generated through the switching, the switching unit 70 for interfacing between the digital signal processor 30 and the DRAM 80, the control scene According to the JPEG (ICEG) IC 100 for reading the frame signal stored in the DRAM 80, compressing the read signal to make a screen for the digital still camera, and store it in the memory, and video signal recording and playback The memory controller 90 controls the operation of each part required at the time.

FIG. 2 is a flowchart illustrating a mode-specific recording control method of the multi-camcorder of the present invention. As shown in FIG. 2, a first step of checking a selected mode and a video signal from a CD when selecting a camcorder mode are shown. A second step of generating a timing signal for reading in units of fields, a third step of making an image read from the CD into a TV signal, and storing it in a recording medium; and selecting a digital still camera mode in the first step. A fourth step of generating a timing signal for reading an image signal from a CD to a frame unit, a fifth step of creating a frame signal of the image read from the CD and storing it in a DRAM, and in the first step When the video catch mode is selected, the video played back from the recording media is stored in the frame unit on the DRAM and the video is displayed and displayed. And a sixth step of selecting a scene, and a seventh step of compressing a frame signal of the selected scene into a screen for a digital still camera when selecting a desired scene.

Referring to the operation and effect of the present invention configured as described in detail as follows.

In order to overcome the shortcomings of digital still cameras, which are difficult to capture moments, they can easily create signals for digital still cameras and transfer them to personal computers. You can also record

First, referring to the camcorder function, when the user selects the camcorder mode through the key input unit 60, the microcontroller 40 recognizes the mode and selects the mode control signal for reading the image from the CD in field units. In addition to the output to the unit 50, the driving signal is generated and output to each unit of the image processing unit 20.

Then, the drive signal generator 16 of the mode selector 50 generates a drive signal of one field and provides it to the timing signal generator 17.

The timing signal generator 17 outputs an image signal from the CD 1 of the image processor 20 in field units when a drive signal of one field output from the driving signal generator 16 is input. A timing signal for causing the CD 1 to be read out is output.

Accordingly, the CD 1 is driven in accordance with the timing signal to receive all the images through the lens, and provide the received image signals to the correction and gain adjustment unit 2 in units of fields.

Accordingly, the correction and gain adjustment unit 2 receives the analog image signal provided from the CD 1 to sample / hold and remove noise, to correct the noise, and to adjust the gain to adjust the analog / digital conversion unit 3. Will output

The analog / digital converter 3 converts an analog video signal into a digital video and outputs the analog video signal to the digital signal processor 30.

Then, the digital signal processor 30 performs signal processing so that the converted digital image can be recorded on the recording medium, and records the recorded digital signal on the recording medium through the recording processor 6.

When the image recorded on the recording medium is to be viewed as described above, when the signal reproduced from the recording medium is processed by the reproduction signal processing unit 8 and provided to the switching unit 70, the switching unit 70 is a microcontroller 40. Is controlled by the digital signal processor 30.

As a result, the reproduction signal input through the reproduction signal processing unit 8 is transmitted to the video output unit 18 via the switching unit 70 and the digital signal processing unit 30, and displayed accordingly.

Next, the functions of the digital still camera will be described.

When the user selects the digital still camera (DSC) mode through the key input unit 60, the microcontroller 40 recognizes the mode and outputs a mode control signal for reading an image from the CD in units of frames. 50) and generates and outputs a driving signal to each part of the image processing unit 20.

Then, the drive signal generator 16 of the mode selector 50 generates a drive signal of one frame and provides it to the timing signal generator 17.

When the timing signal generator 17 receives a drive signal of one frame that is output from the drive signal generator 16, the timing signal generator 17 frames an image signal from the CD 1 of the image processor 20. A timing signal for driving the CD 1 is generated and output so as to be read in units.

According to the timing signal, the CD 1 is driven to receive all the images through the lens, and the received image signals are provided to the correction and gain adjusting unit 2 in units of frames.

Accordingly, the correction and gain adjustment unit 2 receives the analog image signal provided from the CD 1 to sample / hold and remove noise, to correct the noise, and to adjust the gain to adjust the analog / digital conversion unit 3. Will output

The analog / digital converter 3 converts an analog video signal into a digital video and outputs the analog video signal to the digital signal processor 30.

Then, the digital signal processor 30 outputs the frame image to the switching unit 70 of the converted digital image.

At this time, the microcontroller 40 controls the switching unit 70 to connect the digital signal processor 30 and the DRAM 80.

In this way, the frame screen processed by the digital signal processor 30 is stored in the second DRAM DRAM2 of the DRAM 80.

The data of the frame screen stored in the second DRAM DRAM2 of the DRAM 80 is read from the JPEG IC 100 under the control of the memory controller 90, compressed, and stored in the memory unit 110.

As described above, when one screen obtained through the digital still camera mode is to be transferred to the personal computer, the microcontroller 40 drives the memory unit 110 through the memory controller 90 to form one screen. Simply read the unit's screen and send it.

The memory unit 110 uses a flash memory or a memory card.

Next, a case where a user wants to obtain a most beautiful scene or a desired scene as a digital still camera screen, that is, a still image, while watching a moving picture recorded on a recording medium with a camcorder is as follows.

When the user presses a key corresponding to the video catch mode to extract a desired scene from the video as a still picture through the key input unit 60, the microcontroller 40 recognizes this and controls the switching unit 70 to control the playback signal processor 8. ) And the DRAM 80 are connected to store the data of the field unit reproduced by the reproduction signal processor 8 in the DRAM 80 and simultaneously provide the data to the digital signal processor 30.

In this case, data in field units is stored in the first DRAM DRAM1 of the DRAM 80, and two fields of data are read in the second DRAM DRAM2 from the first DRAM DRAM1 and stored in frame units. .

Then, when the digital signal processor 30 provides the video data in the field unit to the video output unit 18, the video output unit 18 displays the image on the screen.

The user views the image output through the video output unit 18, and the user selects the most beautiful scene or the desired scene through the key input unit 60.

Accordingly, the microcontroller 60 controls the memory controller 90 to read an image of a scene selected by the user from the DRAM 80.

The memory controller 90 reads an image of the scene in frame units from the second DRAM (DRAM2) of the DRAM 80 under the control of the microcontroller 40 and transmits the image to the JPEG IC 100.

The JPEG IC 100 compresses a frame image constituting an image from the DRAM 80 to form a single screen, and provides the configured image to the memory unit 110 for storage.

In this way, a still picture obtained from a moving picture can also be transferred to a personal computer.

Referring to FIG. 3 again, a process of producing a still image in the video played as described above is checked by checking whether the frame advance key is inputted, and when the frame advance key is inputted, the image of the field unit played through the recording medium. Reads two fields of data and stores the data in frame 80 as frame data, and inputs a still image recording key after the frame advance key is inputted to remove the image in the frame unit stored in DRAM 80. It compresses through the effect IC 100 and stores the compressed data in the memory unit 110.

The stored data can be used as a screen for a digital still camera or transferred to a personal computer.

If there is an external input in the camcorder mode or the digital still camera mode, it checks whether there is an external input. For example, if there is an external input in the camcorder mode, the microcontroller 40 controls the switching unit 70 to control the external input processing unit ( 7) and the digital signal processor 30 are connected.

Then, the digital signal processor 30 converts the signal input from the TV or personal computer (PC) into a mode TV signal and stores the signal on the recording medium through the recording processor 6.

In addition, when there is an external input in the digital still camera mode, the microcontroller 40 controls the switching unit 70 to connect the external input processing unit 7 and the DRAM 80.

When the data stored in the DRAM 80 from the external input processor 7 is a field signal such as a TV signal, a video signal in a field unit is recorded in the first DRAM DRAM1 of the DRAM 80. In the DRAM DRAM2, data stored in the first DRAM DRAM1 is stored again in frame units corresponding to two fields, and when the external signal is a personal computer signal, the data in frame units is stored as it is. The data is stored in the second DRAM DRAM2 of 80.

The process described so far will be briefly described with reference to FIG. 2, which first checks the selected mode.

As a result of the check, in the camcorder mode (S1), it is checked again whether there is an external input (S2).

If there is no external input in step S2, a timing signal for reading an image signal from the CD in field units is generated.

The TV signal is generated by the digital signal processor 30 based on the generated timing signal (S4), and the TV signal thus produced is recorded on the recording medium (S5).

If there is an external input in step S2, a TV signal is generated by the digital signal processor 30 through the digital signal processor 30 and recorded on a recording medium. (S4) (S5)

In step S1, if it is not a camcorder mode but a digital still camera mode (S6), it is checked whether there is an external input again (S7).

As a result of the check, if there is no external input, a timing signal for reading an image signal from the CD in units of frames is generated (S8), and a frame screen is created through the digital signal processor 30 (S9). Data on the screen is stored in the DRAM 80. (S10)

Then, the data stored in the DRAM 80 is compressed through the JPEG IC 100 and stored in the memory unit 110 to read and use when necessary. (S11)

If there is an external input in step S7, steps S10 and S11 are performed.

If the video is not in the camcorder mode or the digital still camera mode, the video catch mode reads field-by-field video of a video being played back from the recording medium, and stores it in the DRAM 80 frame by frame.

At the same time, the video output unit 18 outputs and displays a video reproduced from the recording medium. (S13)

When a desired scene is selected during the video display (S14), the frame signal for the selected screen is read from the DRAM 80 (S15).

The frame signal for the selected screen read from the DRAM 80 is compressed and stored in the memory unit 110 to be read when desired. (S16)

In this way, it performs functions of a camcorder and a digital still camera, and selects a desired scene from a video recorded on a recording medium through a camcorder and extracts it as a still picture so that a user can obtain the best picture desired. .

Therefore, the present invention performs a function of a camcorder to record or play back a moving image on a recording medium, and to perform a digital still camera function to extract a scene for a moving subject, and to record From the video, user or consumer most desired scene can be extracted to the screen for digital still camera, or the extracted screen can be transferred to a personal computer for use to extract the best image, and if there is an external input, select the external input. There is an effect that it can be implemented so that various functions can be implemented.

Claims (8)

A mode selector for selecting a camcorder mode and a digital still camera mode, a microcontroller for generating a control signal in accordance with the mode selected above, and a solid state image pickup device for outputting an image signal according to the control signal output from the above. Multimode camcorder, characterized in that configured. The multi-mode camcorder according to claim 1, which outputs video signals in field units in a camcorder mode and in units of frames in a digital still camera mode. When selecting a digital still camera mode, a digital signal processing unit for digitizing the image signal output from the CD to the frame unit to configure and output the frame screen, first storage means for storing the output of the digital signal processing unit, and the stored And second storage means for compressing and storing the data again. The multi-mode camcorder according to claim 3, wherein the second storage means is a flash memory. A reproduction signal processor for reproducing and outputting a video signal from a recording medium, a digital signal processor for configuring a screen of the reproduced field signal in units of frames, a video output unit for outputting the digitized video signal, and the video output A key input unit for selecting a displayed screen, first storage means for storing the image signal in units of frames, and second storage means for capturing, compressing and storing the image frame of the first storage means according to the input of the key input unit. Multi-mode camcorder comprising a. The method of claim 5, wherein the second storage means is characterized by comprising a capture unit for capturing the screen, the compression means for compressing the captured screen, and the memory means for restoring the compressed video signal Multimode camcorder. A first step of checking a selected mode, a second step of capturing an image signal from a solid state image pickup device by frame unit when the digital still camera mode is selected, and a third step of digitally processing the captured image signal and storing the captured image signal And a fourth step of compressing and storing the stored video signal in a predetermined format again. A second step of reproducing and outputting an image signal recorded on a recording medium; a second step of outputting the output image signal in units of frames and storing the image signal in a first storage means and outputting the same to a video output means; And a third step of capturing, compressing, and storing the video signal selected from the user among the video signals in the second storage means.