KR20050036556A - Photographing apparatus of recording and reproducing image in the same time and method thereof - Google Patents

Abstract

Provided are a photographing apparatus capable of simultaneously recording and reproducing an image and a method of simultaneously performing recording / reproducing thereof. The photographing apparatus includes a photographing unit which outputs a first image signal generated by converting an optical signal incident through a lens into an electrical signal and then converting the optical signal into a predetermined image size, and extracting a previously stored image signal, A recording / drawing section for outputting a second video signal generated by converting to a predetermined video size, a memory unit for storing the first and second video signals, and a first and second video signals stored in the memory section; And a playback unit that displays the corresponding first and second images together on one screen. As a result, it is possible to delete an unnecessary image while reproducing and retrieving an already recorded image while retrieving the image currently recorded, so that the recording apparatus is used in the reproducing mode to secure the storage space of the recording medium while the recording apparatus is in use. To avoid the inconvenience of switching to.

Description

Photographing apparatus of recording and reproducing image in the same time and method

The present invention relates to a recording device and a recording / reproducing method of performing the recording device at the same time, and more particularly, a recording device that can delete unnecessary images while recording and retrieving the already recorded image, and at the same time recording the current image; The present invention relates to a recording / reproducing simultaneous performance method of a photographing apparatus.

The photographing apparatus refers to a device capable of recording an image incident through a lens and reproducing and displaying an already recorded image. Representative examples include cameras and camcorders, and mobile phones incorporating their functions are also examples.

The photographing apparatus operates in one of two operation modes according to a user's setting, one of which is a recording mode for recording an image incident through a current lens, and the other is a playback mode for reproducing previously recorded images. to be. In the playback mode, the photographing apparatus displays images recorded by the display device sequentially so that the user can view the images. In this case, the user deletes the currently displayed image by using an input means, or deletes the currently displayed image, such as a file name, a shooting location You can edit additional information.

Hereinafter, how the photographing apparatus operates according to the operation mode set by the user will be described with reference to FIG. 1. 1 is a flowchart provided to explain a method of operating a conventional photographing apparatus according to a set operation mode.

Referring to FIG. 1, when power is supplied to the photographing apparatus or when the user changes the operation mode, the main controller determines what is the currently set operation mode (S10). At this time, if the main controller determines the current operation mode as the recording mode (S20), the photographing apparatus performs the recording operation (S21). If the main controller determines the current operation mode as the playback mode in S20, the photographing apparatus performs the playback operation (S23).

As can be seen from FIG. 1, the photographing apparatus can perform only one of a recording operation and a reproducing operation, and cannot simultaneously perform both operations. Therefore, in order to use the photographing apparatus in the recording mode and then in the playback mode, the mode switching process must be performed.

Suppose that the recordable space is not left on the recording medium while recording the incident image by setting the photographing apparatus to the recording mode. In this case, in order to continue to store the incident image, first switch the recording device to the playback mode, delete the pre-stored images to secure the storage space on the recording medium, and then switch the recording device to the recording mode to resume the recording operation Should be.

However, since the program to be executed differs depending on the operation mode, the photographing apparatus needs to be preceded by an operation for booting the corresponding program when the operation mode is switched, but the program booting takes a considerable time. Therefore, even if the operation mode switching command of the photographing apparatus is made, it takes a long time for the photographing apparatus to normally perform the operation of the mode.

If only the important scenes of the performance scene or the stadium scene are selectively photographed at the performance hall or sports stadium, all the storage space of the recording medium is filled, thus securing a storage space while consuming a lot of time as described above. If the viewpoint is after the important scene has already ended, a problem arises in that the storage space secured without capturing the important scene becomes useless.

In addition, since it is impossible to know when important scenes will occur, it is possible to secure the storage space by deleting images recorded on the recording medium in advance. There is also a problem in that the images that have been recorded for the purpose of securing the data are deleted.

The present invention has been made to solve the above problems, and an object of the present invention is to record the current image, and at the same time recording and retrieval apparatus capable of deleting unnecessary images while reproducing and retrieving the already recorded image The present invention provides a method of simultaneously recording and reproducing the data.

According to the present invention for achieving the above object, the photographing apparatus, the photographing unit for outputting the first image signal generated by converting the optical signal incident through the lens into an electrical signal, and then converted to a predetermined image size And a recording / drawing unit for outputting a second video signal generated by converting the pre-stored video signal to a predetermined video size, and storing the first and second video signals and the memory unit. And a reproduction unit for extracting the stored first and second image signals and displaying the corresponding first and second images together on one screen.

The second image may have a smaller size than that of the first image, and the second image overlaps a predetermined area of the first image and is displayed. The second image may be movable within an area of the first image.

The first image may have a smaller size than the second image and may overlap the predetermined area of the second image and be displayed. The first image may be movable within an area of the second image. In addition, the first image and the second image may be the same size and may be displayed by dividing one screen into one of a horizontal direction and a vertical direction.

The recording / retrieving unit extracts the first image signal from the memory unit and a recording medium that provides a storage space for a compressed signal generated by compressing the first image signal into a predetermined format, and then converts the first image signal into the compressed signal. And a signal processing unit for storing the second video signal generated by converting the compressed signal from the recording medium to the predetermined image size after the compressed signal is extracted and expanded from the recording medium. Do. The first and second image signals may be any one of a still image signal and a video signal.

Meanwhile, in the recording / reproducing simultaneous performing method of the photographing apparatus according to the present invention, a) generating a first image signal by photoelectrically converting an optical signal incident through a lens into an electrical signal and then converting the optical signal into a predetermined image size. b) extracting pre-stored video signals, and converting them to a predetermined video size to generate a second video signal; and c) generating a first video signal corresponding to the first and second video signals. Displaying on the screen together.

And d) when a delete command for deleting the displayed second image is input, deleting the pre-stored video signal corresponding to the second video signal, and e) recording for recording the displayed first image. When the command is input, the method may further include storing the first video signal.

The second image may have a smaller size than the first image and overlap the predetermined region of the first image. The second image may be movable within an area of the first image.

The first image may have a smaller size than the second image, and may overlap the predetermined area of the second image and be displayed. The first image may be movable within an area of the second image. The first image and the second image may have the same size, and one screen may be divided and displayed in one of a horizontal direction and a vertical direction.

The first and second image signals may be any one of a still image signal and a video signal.

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

2 is a block diagram of a photographing apparatus capable of simultaneously recording and reproducing an image, according to an embodiment of the present invention. The photographing apparatus includes a photographing unit 110, an SDRAM 120, a recording / drawing unit 130, a reproducing unit 140, a controller 150, and a key input unit 160.

The photographing unit 110 photoelectrically converts an optical signal incident through the lens into an electrical signal, and then outputs an image signal generated through a predetermined signal processing process. The photographing unit 110 performing such a function includes a lens unit 111, a lens driving unit 112, a CCD (Charge Coupled Device) 113, a CCD driving unit 114, a CDS / AGC / ADC (Correlated Double Sampler / An automatic gain controller / analog-to-digital converter (115), a photographing signal processor 116, and a timing generator (TG) 117 are configured.

The CCD 113 photoelectrically converts an optical signal incident through the lens unit 111 into an electrical signal. The lens driver 112 and the CCD driver 114 respectively drive the lens 111 and the CCD 113 based on the driving pulses output from the TG 117.

The CDS / AGC / ADC 115 receives the output call of the CCD 13 and, under the control of the controller 150, removes the noise included in the signal and adjusts the gain so that the signal level is kept constant. And convert it into a digital signal.

The photographing signal processing unit 116 receives the output signal of the CDS / AGC / ADC 115, performs a gizmo correction under the control of the control unit 150, adjusts the luminance value, the chrominance value, and the like, and the image size. Adjust (digital zoom).

The TG 117 generates a driving pulse and applies the driving pulse to the lens driver 112 and the CCD driver 114 under the control of the controller 150.

The SDRAM 120 functions as a buffer for temporarily storing the output signals of the image pickup signal processing unit 116 and the recording / drawing unit 130.

If there is a recording command from the user, the recording / retrieving unit 130 draws out the video signal temporarily stored in the SDRAM 120 under the control of the controller 150, records the image signal through a predetermined signal processing process, and then plays back from the user. If there is, under the control of the controller 150, the already recorded video signal is extracted and stored in the SDRAM 120 through a predetermined signal processing process. The recording / outgoing unit 130 performing this function is composed of a recording / outgoing signal processor 131 and a recording medium 133.

When a recording command is received from a user, the recording / outgoing signal processing unit 131 extracts a video signal output from the photographing unit 110 and temporarily stored in the SDRAM 120 under the control of the control unit 150, and outputs an MPEG format. It is compressed and recorded on the recording medium 133. In addition, if a playback command is received from the user, the recording / retrieving signal processing unit 131 extracts the compressed video signal already recorded on the recording medium 133 and expands and decompresses it under the control of the controller 150. The image signal is restored to a predetermined video signal, converted into a predetermined video size, and output.

The recording medium 133 stores the compressed video signal output from the recording / outgoing signal processor 131. Any recording medium such as a magnetic tape, an optical recording medium such as a CD or a DVD, a hard disk, or a memory stick can be used as the recording medium 133 as long as a medium capable of recording a compressed video signal.

The playback unit 140 draws out the video signal temporarily stored in the SDRAM 120 and displays it through a predetermined signal processing process. The playback unit 140 that performs such a function includes an image format converter 141, a digital-to-analog converter (DAC) 143, and a liquid crystal display (LCD) 145.

The image format converter 141 extracts the video signal temporarily stored in the SDRAM 120, performs digital zooming, and then converts the image signal into ITU-R-656 format, which is a standard format of the International Telecommunication Union (ITU). do.

The DAC 143 converts the output signal of the image format converter 141 into an analog signal, and an image corresponding to the converted analog signal is displayed on the LCD 145.

The controller 150 receives a user's command through the key input unit 160 and controls the operation of the photographing apparatus accordingly.

Hereinafter, the case where the photographing apparatus is operated in the combined mode in which the recording operation and the reproducing operation are performed at the same time will be described with reference to FIGS. 3 and 4A to 4D. 3 is a flowchart provided to explain a method of simultaneously recording and playing back an image according to an embodiment of the present invention, and FIGS. 4A to 4D are views of an image currently being recorded on the LCD of FIG. FIG. Is a diagram illustrating a screen on which an image is displayed together.

First, according to the user's setting, the photographing apparatus operates in the recording mode or the reproduction mode (S310). Here, the recording mode means that an image signal corresponding to an image captured by the photographing unit 110 is temporarily stored in the SDRAM 120 and displayed through the reproducing unit 140, and when the user makes a recording command, the SDRAM ( This mode refers to a mode in which the video signal temporarily stored in the 120 is finally recorded in the recording / drawing unit 130. In addition, the playback mode refers to a mode in which an image signal recorded in the recording / drawing unit 130 is fetched and temporarily stored in the SDRAM 120 and then displayed through the playback unit 140.

Subsequently, when the user sets the mode of the photographing apparatus to the composite mode (S320), the image signal corresponding to the image captured by the photographing unit 110 is stored in the SDRAM 120 and the recording / drawing unit 130 In operation S330, an image signal corresponding to the image to be extracted is stored in the SDRAM 120. In this case, the captured image is changed in real time because the image is incident through the lens unit. The extracted image is an image recorded on the recording medium 133 for the first time, and is subsequently changed one by one in the order recorded by the user's key operation or the reverse order.

In this case, if the photographing apparatus was operating in the recording mode before being set to the composite mode, the photographing unit 110 outputs the captured image in a basic size, and the recording / drawing unit 130 captures the extracted image. The image is converted into a smaller size than the image (eg, thumbnail size) and output. On the contrary, if the photographing apparatus was operated in the playback mode before being set to the composite mode, the image to be drawn is output in the basic size, and the image to be captured is output in the thumbnail size. In addition, it is also possible to always output the image to be drawn in the thumbnail size regardless of the operation mode before the composite mode setting.

Meanwhile, the captured image and the extracted image are output in the same size and may be stored in the SDRAM 120. The image and thumbnail size to be output in the basic size may be output regardless of the operation mode before setting the composite mode. It is also possible to set an image by the user's selection.

The captured image and the extracted image stored in the SDRAM 120 are displayed together on the LCD 145 of the playback unit 140 (S340). As a result of S340, FIG. 4A shows a screen in which the image 145a captured by the LCD 145 is displayed in a basic size, and the image 145b drawn out overlaps the image 145a captured in a thumbnail size. It was.

When the user searches the extracted images 145b in the sequential or reverse order using the key input unit 160 and inputs a delete command (S351), as illustrated in FIG. 4B, the LCD 145 displays a deletion confirmation window ( 145c) is further overlapped and displayed. When the user places the cursor on the deletion confirmation window 145c at 'Yes' and presses the confirmation key, the currently displayed outgoing image 145b is deleted from the recording medium 133 (S353).

On the other hand, when the user inputs a recording command using the key input unit 160 (S361), the currently displayed image 145a is recorded on the recording medium 133 (S363).

In the conventional photographing apparatus, when recording a still image, when the user presses a recording command (photo switch), the captured image is displayed on the LCD and checked whether the image is stored. It is not possible to record. However, in this case, the photographing apparatus according to the present invention displays the captured image on 145b instead of 145a, so that the image captured by the photographing unit 110 can be recorded even immediately after the recording command. In this case, the user may delete the captured image in the 145b. When the delete command or the forward / reverse image search command is input, the image displayed immediately before the captured image is displayed on the 145b.

Meanwhile, FIG. 4C illustrates that the image 145b to be drawn may be displayed overlapping with any position 145b-1 to 145b-4 of the image 145a to be photographed or may be movable while being displayed. The number of positions at which the extracted image 145b is displayed may be plural in order to prevent the extracted image 145b from covering an important part of the captured image 145a. FIG. 4D illustrates a case in which the captured image 145a and the extracted image 145b are displayed by dividing the screen of the LCD 145 vertically with the same size, and the screen of the LCD 145 is horizontal. Of course, it is also possible to divide and display each.

As described above, according to the present invention, it is possible to delete an unnecessary image while recording and retrieving a currently recorded image and replaying an already recorded image, thereby ensuring a storage space of a recording medium while the photographing apparatus is used in a recording mode. For this reason, the inconvenience of having to switch the photographing apparatus to the playback mode and the time taken in the switching process can prevent the missed important scenes to be recorded.

In addition, since it is not necessary to secure a storage space in advance in order to record an important scene whose occurrence is unclear, it is possible to prevent the undesired deletion of recorded images.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a flowchart provided to explain a method of operating a conventional photographing apparatus according to a set operation mode;

2 is a block diagram of a photographing apparatus capable of simultaneously recording and reproducing an image, according to an embodiment of the present invention;

3 is a flowchart provided to explain a method capable of simultaneously recording and reproducing an image, according to an embodiment of the present invention;

4A to 4D are diagrams illustrating a screen in which an image currently captured and an image reproduced are displayed together on the LCD of FIG. 2.

Explanation of symbols on the main parts of the drawings

110: recording unit 113: CCD

116: recording signal processing unit 120: SDRAM

130: recording / retrieval unit 131: recording / retrieval signal processing unit

133: recording medium 140: playback unit

145: LCD 150: control unit

Claims (16)

A photographing unit which photoelectrically converts an optical signal incident through the lens into an electrical signal and outputs a first image signal generated by converting the optical signal into a predetermined image size; A recording / drawing unit for extracting a previously stored video signal and outputting a second video signal generated by converting the video signal to a predetermined video size; A memory unit in which the first and second image signals are stored; And And a reproducing unit which extracts the first and second image signals stored in the memory unit and displays the corresponding first and second images together on one screen. The method of claim 1, And the second image has a smaller size than the first image and overlaps a predetermined area of the first image to be displayed. The method of claim 2, And the second image is movable within an area of the first image. The method of claim 1, And the first image has a smaller size than the second image and is displayed overlapping with a predetermined area of the second image. The method of claim 4, wherein And the first image is movable within an area of the second image. The method of claim 1, And the first image and the second image are the same size, and are divided by displaying one screen in any one of a horizontal direction and a vertical direction. The method of claim 1, The recording / drawing section, A recording medium providing a storage space of a compressed signal generated by compressing the first video signal in a predetermined format; And Extracting the first video signal from the memory unit and converting the first video signal into the compressed signal and storing the compressed video signal on the recording medium; and extracting and compressing the compressed signal from the recording medium to convert the compressed video signal to the predetermined image size. And a signal processing unit which stores a second image signal in the memory unit. The method of claim 1, And the first and second image signals are any one of a still image signal and a moving image signal. a) photoelectric conversion of an optical signal incident through the lens into an electrical signal, and then converting the optical signal into a predetermined image size to generate a first image signal; b) extracting a pre-stored video signal and converting it to a predetermined video size to generate a second video signal; And c) simultaneously displaying the first and second images corresponding to the first and second image signals on a single screen; recording / reproducing at the same time as the recording apparatus. The method of claim 9, d) when a delete command for deleting the displayed second image is input, deleting a pre-stored video signal corresponding to the second video signal; And and e) storing the first image signal when a recording command for recording the displayed first image is input. The method of claim 9, And the second image has a smaller size than the first image and is displayed overlapping with a predetermined area of the first image. The method of claim 11, And the second image is movable within an area of the first image. The method of claim 9, And the first image has a smaller size than the second image and is displayed overlapping a predetermined area of the second image. The method of claim 13, And the first image is movable within an area of the second image. The method of claim 9, And the first image and the second image are the same size, and one screen is divided and displayed in any one of a horizontal direction and a vertical direction. The method of claim 9, And the first and second image signals are any one of a still image signal and a moving image signal.