KR20050071995A - Apparatus of converting image signal input/output path automatically and method thereof - Google Patents

Abstract

An input / output path automatic switching device for a video signal and a method thereof are provided. The input / output path automatic switching device of a video signal connected to a main body capable of inputting / outputting a video signal receives a video signal output from the main body, and a main body connecting portion for outputting a video signal to be input to the main body, Any one of a main body connection unit and an input / output unit based on an input / output unit for receiving an image signal output from an external device capable of output and outputting an image signal to be input to the external device and a control signal received from the main body And a switching unit for switching the image signal input from the main unit to be output through any one of a connection unit and an input / output unit. As a result, the cradle automatically sets a path through which a video signal is transmitted between the portable compound device and the external A / V devices according to the operation mode of the portable compound device. It is possible to prevent the inconvenience of the user to connect the cable separately between the external A / V devices.

Description

I / O path automatic switching device for video signal and its method {Apparatus of converting image signal input / output path automatically and method

The present invention relates to a device for automatically switching input / output paths of a video signal and a method thereof, and more particularly, to a portable composite device capable of reproducing and storing a video signal, and according to an operation mode of the portable composite device. The present invention relates to an input / output path automatic switching device for a video signal that can automatically set a path for transmitting a video signal between external A / V devices, and a method thereof.

Portable multi-function devices have functions such as camcorders, digital cameras, MP3 players, voice recorders, data storage devices, and web cameras, and are compact for users to carry and use. Says the device. Such portable composite devices can be implemented by incorporating notable digital technologies into image processing devices such as camcorders.

Recently released camcorders are capable of playing or recording through a camcorder by receiving an image signal output from an external A / V device. In addition, the video signal recorded in the camcorder can be output to an external A / V device for playback on the external A / V device.

However, in order to do this, the user should connect the input terminal of the camcorder and the output terminal of the external A / V device with a cable, referring to the user manual, and the output terminal of the camcorder and the input terminal of the external A / V device with a cable. It should be done, which causes inconvenience to the user.

In addition, depending on the camcorder's operation mode (external input recording mode or playback mode via an external A / V device), the user's inconvenience may be doubled because the input / output terminals to which the cable should be connected are different.

In particular, when the number of input / output terminals provided in the camcorder or the external A / V device is large, in connection with this, the user may be greatly confused. As a result, if the connection is incorrect and the video signals are not properly transmitted between devices, the user may mistake it as a product failure.

The present invention has been made to solve the above problems, an object of the present invention is to mount a portable composite device capable of reproducing and storing video signals, according to the operating mode of the portable composite device, the portable composite device and the external The present invention provides an apparatus for automatically switching an input / output path of a video signal capable of automatically setting a path for transmitting a video signal between A / V devices.

According to the present invention for achieving the above object, the input and output path automatic switching device of the video signal connected to the main body capable of inputting and outputting the video signal, receives the video signal output from the main body, input to the main body A main body connecting unit for outputting the video signal to be output; An input / output unit configured to receive the video signal output from an external device capable of inputting and outputting the video signal and to output the video signal to be input to the external device; And switching the video signal input from any one of the main body connecting unit and the input / output unit to be output through any one of the main body connecting unit and the input / output unit based on the control signal received from the main body. It includes a switching unit.

In addition, when the control signal means power-on of the main body, the switching unit may switch to output the video signal input from the input / output unit through the main body connection unit.

The switching unit may switch the image signal input from the input / output unit to be output through the main body connection unit when the main body operates in a storage mode for storing the image signal output from the external device. Can be.

In addition, when the control signal means power-on of the main body, the switching unit may switch to output the image signal input from the main body connection unit through the input / output unit.

In addition, when the main body operates in a reproducing mode for reproducing the pre-stored video signal to the external device, the switching unit may switch such that the video signal input from the main body connecting unit is output through the input / output unit. have.

The input / output unit may include an input unit configured to receive the image signal output from a first external device capable of outputting the image signal; And an output unit configured to output the video signal to be input to a second external device capable of receiving the video signal.

In addition, when the control signal means power-off of the main body, the switching unit may switch to output the image signal input from the input unit through the output unit.

On the other hand, according to the present invention, the video signal input and output path automatic switching method between the main body and the external device that can input / output video signals, a) receiving a control signal from the main body; And b) switching the image signal input from any one of the main body and the external device to one of the main body and the external device based on the control signal.

And, in the step b), when the control signal means the power-on of the main body, it is preferable to switch to output the video signal input from the external device to the main body.

Also, in the step b), when the main body operates in a storage mode for storing the video signal output from the external device, the video signal input from the external device may be switched to be output to the main body. .

And, in the step b), when the control signal means the power-on of the main body, it is preferable to switch to output the image signal input from the main body to the external device.

Also, in the step b), when the main body operates in a reproducing mode for reproducing the pre-stored video signal to the external device, the video signal input from the main body may be switched to be output to the external device. .

The external device may include a first external device capable of outputting the video signal and a second external device capable of receiving the video signal, and in step b), the control signal may include power of the main body. In the case of -off, it is preferable to switch so that the video signal input from the first external device is output to the second external device.

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

Figure 1a is a perspective view showing the front and right side of the portable composite device according to the present invention. As shown in FIG. 1A, a front surface of the portable composite apparatus includes a lens unit 211 used for photographing a subject, a remote controller signal receiver 111 for receiving a remote controller signal, and an earphone terminal 113 for connecting earphones. Power supply cable connection terminal 117 is provided for receiving external power through a USB terminal 115 and a power supply (not shown) for serial communication with a PC or a printer.

In this way, the front portion of the portable composite device is provided with a terminal mainly used for connecting to an external device, the right side of the portable composite device photo button 231a for taking a still image and a battery for mounting a battery therein The cover 121 is provided. In addition, a microphone 271 for receiving a sound signal from the outside is provided on the upper surface of the portable composite device.

1B is a perspective view of the bottom surface of the portable composite device. As illustrated in FIG. 1B, a cradle connection terminal for receiving a power and video signal through a tripod fixing unit 131 and a cradle (not shown) for mounting a tripod on a lower surface of the portable composite device. 133 is provided.

Hereinafter, operation buttons provided on the outside of the portable composite apparatus will be described with reference to FIG. 1C. Figure 1c is a perspective view showing the back and left side of the portable composite device. For convenience of operation of the user, as shown in Figure 1c, the operation button of the portable composite device, the rear of the portable composite device or the LCD panel 150 is provided in most.

As illustrated in FIG. 1C, a rear surface of the portable composite apparatus includes a zoom switch 231b for zooming in / zooming out the lens unit 211 and a shooting button 231c for capturing a video. ), An operation mode selection switch 231d for selecting an operation mode (storage / playback / power-off mode) of the portable composite device, a menu button 231e for displaying a menu screen on the LCD 243, and an LCD 243. A menu dial 231f is provided for moving the cursor to a specific menu on the menu screen displayed on the screen and selecting a menu in which the cursor is located.

In addition, the rear side of the portable composite apparatus is provided with a memory card engaging portion 143 and an indicator light 141 for mounting a memory card. The indicator light 141 is composed of a power indicator and a charging indicator. The power indicator emits light when the portable composite device is 'powered on', and the charging indicator light is orange when the portable composite device is being charged. Emits color light.

In addition, the LCD panel 150 coupled to change the position of the portable composite device has a mode button for displaying the LCD screen 243 and a menu screen on which the image and menu screen to be photographed and reproduced are displayed. (231g), rewind (◀◀) button 231h, fast forward (▶▶) button 231i, play / stop (▶ ∥) button 231j, and stop (■) button 231k are provided.

2 is an internal block diagram of a portable composite device. The portable composite apparatus includes a photographing unit 210, a National Television System Committee / Phase Alternation Line (NTSC / PAL) decoder 220, an operation unit 231, a second control unit 233, a flash memory 235, A display unit 240, a storage unit 250, a universal serial bus (USB) interface unit 261, a synchronous dynamic random access memory (SDRAM) 263, an audio signal processor 270, and a main control block 300 are provided. do.

The photographing unit 210 photoelectrically converts an optical signal incident through the lens into an electrical signal and performs a predetermined signal processing process on the converted signal. The photographing unit 210 performing such a function includes a lens unit 211, a lens driving unit 213, a charge coupled device (CCD) 215, and a correlated double sampler / auto gain controller / analaog- CDS / AGC / ADC. to-digital converter) 217.

The lens driver 213 drives the lens unit 211 under the control of the second control unit 233. Specifically, the lens driving unit 213 zooms in / zooms out the lens unit 211 and focuses the lens unit 211. It adjusts automatically, and controls the opening and closing amount of the aperture (not shown) provided in the lens unit 211.

The CCD 215 converts the optical image incident through the lens unit 211 into an electrical signal and outputs the electrical signal. That is, the optical image of the subject is formed on the optical surface of the CCD 215 by the lens unit 211, and the CCD 215 converts the optical image formed on the photosensitive surface into an electrical signal and scans horizontally and vertically. Output in the form of electrical signals in dimensions.

The CDS / AGC / ADC 217 removes noise from a signal output from the CCD 215 using a correlated double sampling circuit, and uses an auto gain control circuit. Adjust the gain so that the level of the signal remains constant and convert it to a digital signal using an A / D converter.

The NTSC / PAL decoder 220 converts an NTSC or PAL signal input through a video line input terminal (not shown) into a digital signal and delivers the digital signal to the main control block 300. NTSC or PAL is one of the standardized television outputs. NTSC is used in Korea and PAL is used in Europe.

The main control block 300 compresses a digital signal applied from the photographing unit 210, the NTSC / PAL decoder 220, and the USB interface unit 261 into data of a predetermined format and stores the data in the storage unit 250. In addition, the main control block 300 may extend the data stored in the storage unit 250 and apply it to the display unit 240. The data received from the audio signal processor 270 may be stored in the storage 250, and the stored data may be applied to the audio signal processor 270. In addition to the main control block 300 controls the overall operation in the device, it is made of a single chip for the miniaturization of the Z-Form.

The main control block 300 performing such a function includes a digital signal processor (DSP) 310, an optical detection module (ODM) 320, a multiplexer (330), a codec (340), and a graphical user (GUI). Interface (350), first controller 360, memory card interface 371, CF (Compact Flash) interface 373, DMA (Direct Memory Access) 375 and system bus 380 Equipped.

The DSP 310 performs predetermined signal processing on the digital signal applied from the photographing unit 210, and then applies the DSP 310 to the MUX 330 or the system bus 380. In addition, the DSP 310 separates the digital signal applied from the photographing unit 210 into a luminance (Y) signal and a chrominance (Crominance: C) signal and applies the ODM signal to the ODM 320.

The ODM 320 generates ODM data, which is control information, based on the Y signal and the C signal received from the DSP 310, and outputs the ODM data to the first controller 360. Specifically, the ODM data includes AE (Auto Exposure) data for optimizing the amount of light incident on the CCD 215, AF (Auto Focus) data for automatically focusing the focus lens, and color shift due to the color temperature of the light source. It includes AWB (Auto White Balance) data for automatic correction.

The MUX 330 applies either the output signal of the DSP 310 or the output signal of the NTSC / PAL decoder 220 to any one of the CODEC 340 and the GUI generator 350.

The CODEC 340 compresses the input data into a predetermined format and expands the compressed data again if necessary. Specifically, the CODEC 340 compresses the MPEG4 format when the input data is moving picture data, and compresses the JPEG data in the JPEG format when the input data is still picture data.

The GUI generating unit 350 stores graphic data such as a menu screen necessary for building a GUI environment, and the GUI generating unit 350 outputs an image output from the MUX 330 under the control of the first control unit 360. You can combine menu screens. The menu screen is a graphic screen provided for the user's convenience when selecting a function of the portable multi-function device.

The first control unit 360 is a 32-bit Reduced Instruction Set Computing (RISC) processor that controls the overall operation of the main control block 300. In detail, the first control unit 360 controls the operations of the CODEC 340 and the GUI generation unit 350, and converts the AE data and the AF data from the ODM data received from the ODM 320 to the second control unit 233. To pass.

In addition, the first controller 360 may interface with various external devices through the system bus 380. The system bus 380 includes a memory card interface 371 for interfacing with the memory card 251, a CF interface 373 for interfacing with the HDD 255 through the TIC 253, a PC or a printer as an external device. The USB interface unit 261, the DMA 375, and the audio signal processor 270 for interfacing with the control unit are connected.

The operation unit 231 is a user interface device for receiving operation commands related to function selection and operation control of the portable multi-device. The operation unit 231 has a photo button 231a, a zoom switch 231b, a shooting button 231c, an operation mode selection switch 231d, a menu button 231e, a menu dial 231f, and a mode button described with reference to FIG. 231 g and the like are provided.

The second control unit 233 receives an operation command related to function selection and operation control from the user through the operation unit 231 and transmits it to the first control unit 360. In addition, the second controller 233 controls the lens driver 213 based on the AE data and the AF data received from the first controller 360.

The flash memory 235 stores a system program necessary for the operation of the device, such as a booting program required by the first controller 360, and important data and applications to be stored even when the power is turned off.

The display unit 240 displays an image output from the main control block 300. The display unit 240 performing such a function includes an NTSC / PAL encoder 241 and a liquid crystal display (LCD) 243.

The NTSC / PAL encoder 241 converts the video signal output from the main control block 300 into an NTSC or PAL video signal and applies it to the LCD 243 and an external device TV.

The LCD 243 is a display device that displays an image received from the NTSC / PAL encoder 241.

The storage unit 250 stores image data received from the main control block 300. The storage unit 250 performing such a function includes a memory card 251, a TIC 253, and an HDD 255.

The memory card 251 is a recording medium for storing image data applied from the main control block 300 and is a type of a removable IC memory card that can be mounted / removed in a portable composite device.

The transition IC (TIC) 253 is used to provide a compact flash interface between the CF interface unit 373 and the HDD 255, and is highly versatile and has excellent compatibility. That is, the HDD 255 is converted into the compact flash interface through the TIC 253 and then connected to the main control block 300.

The HDD 255 is a recording medium that stores image data applied from the main control block 300.

The USB interface unit 261 performs an interface with a PC or a printer, which is an external device.

The SDRAM 263 functions as a buffer that stores data and the like necessary for the operation of the portable multi-device.

The audio signal processor 270 performs a predetermined signal processing process on the audio signal input from the outside and applies the signal to the main control block 300 and the predetermined signal processing on the audio signal received from the main control block 300. Perform the process and output to the external audio device. The audio signal processor 270 performing such a function includes a microphone 271 and an audio CODEC 273.

The microphone 271 converts an acoustic signal input from the outside into an electrical signal.

The audio CODEC 273 converts an analog signal input from the microphone 271 or an external audio device into a digital signal, compresses it into data of a predetermined format, and applies it to the main control block 300. In addition, the audio CODEC 273 expands the compressed data received from the main control block 300, converts the compressed data into an analog signal, and transmits the converted analog signal to an external audio device.

Hereinafter, the cradle will be described in detail with reference to FIGS. 3A to 3C. Figure 3a is a perspective view showing the front of the cradle, Figure 3b is a perspective view showing the rear of the cradle, Figure 3c is a view showing a case where the portable composite device is seated in the cradle.

As shown in Figure 3a, the front of the cradle 400, the support 410 for supporting a portable composite device corresponding to the main body, the power button 421 for selecting whether to power on / off, the LCD of the main body A menu button 423 for displaying a menu screen on the display 243, a remote control signal receiving unit 425 for receiving a remote control signal, connected to the cradle connecting terminal 133 of the main body, supplies power to the main body, and external devices It is provided with a main body connecting terminal 427 for transmitting an image received from.

Support 410 may be implemented in a transparent acrylic, one side of the transparent acrylic is in contact with the LED (not shown), the light emitted from the LED is projected to the transparent acrylic. LEDs can emit light of different colors, depending on the current mode. Specifically, when the portable composite device is in a power-on state, red light is emitted, when the portable composite device is being charged, orange light is emitted, and when charging is completed, blue light is emitted.

And, as shown in Figure 3b, the rear of the cradle 400, the battery slot 430 for seating the battery when only charging the battery, the power supply cable is connected to the power supply through a power supply (not shown) A terminal 441, an AV output terminal 443, a super video image output terminal 445, an AV input terminal 447, and a super video image input terminal 447 are provided.

Meanwhile, FIG. 3C illustrates a case in which the portable composite device is mounted on the cradle 400.

Hereinafter, the automatic switching of the video signal input / output path of the cradle will be described in detail with reference to FIGS. 4 and 5. 4 illustrates a cradle 400 that provides automatic switching of an image signal input / output path, a portable composite device seated on the cradle 400 (hereinafter referred to as a “body”), and an external A / V device, the first TV 510. ) And a second TV 520 is shown. In addition, in the cradle 400 and the main body, only the modules related to the video signal input / output path automatic switching function are illustrated. In addition, the storage interface unit 370 means the memory card interface unit 371 and the CF interface unit 373.

The cradle 400 includes a main body connecting terminal 427, a switching unit 450, an image input terminal 448, and an image output terminal 444.

The main body connecting terminal 427 is connected to the cradle connecting terminal 133 of the main body, and video signals and control signals are input / output to each other.

The image input terminal 448 is connected to the image output terminal 515 of the first TV 510 and receives an image signal output from the first TV 510. On the other hand, the video input terminal 448 is composed of an AV input terminal 447 and a super video video input terminal 449.

The video output terminal 444 is connected to the video input terminal 525 of the second TV 520 and outputs a video signal to the second TV 520. On the other hand, the image output terminal 444 is composed of an AV output terminal 443 and the super video image output terminal 445.

The switching unit 450 may output the video signal input from the first TV 510 to the main body or the second TV 520, and may output the video signal input from the main body to the second TV 520. . The switching unit 450 is switched by the control signal received from the main body to set the input / output path of the video signal as described above.

Hereinafter, the switching unit 450 will be described in detail with reference to FIG. 5. For convenience of description, the switching unit 450 outputs an image signal input from the first TV 510 to an 'I / T signal' (Input / TV) and the switching unit 450 to the second TV 520. The video signal is converted into an 'O / T signal' (Output / TV), and the video signal output from the switching unit 450 to the main body is converted into an 'O / M signal' (Output / Main device). The signal received from the main body will be named 'I / M signal' (Input / Main device).

Referring to FIG. 5, the switching unit 450 includes a first switching unit 451, a second switching unit 453, and a third switching unit 455.

The first switching unit 451 sets the input / output paths of the Audio_Right (A_R) signal and the Video (V) signal among the image signals.

Specifically, the A_R signal ('I / M_A_R' signal) input from the main body is applied to the terminal '3', and the V signal ('I / M_V' signal) is applied to the terminal '6'. The A_R signal ('I / T_A_R' signal) input from the first TV 510 is applied to the terminal '12', and the V signal ('I / T_V' signal) is applied to the terminal '9'.

In addition, the A_R signal ('O / T_A_R' signal) output to the second TV 520 is output at the terminal '4', and the V signal ('O / T_V' signal) is output at the terminal '7'. The A_R signal ('O / M_A_R' signal) output to the main body is output from the terminal '13', and the V signal ('O / M_V' signal) is output from the terminal '10'.

The control signal output from the main body is applied to the terminal '1' of the first switching unit 451.

The second switching unit 453 performs a function of setting an input / output path between the Supervideo_Y (S_Y) signal and the Supervideo_C (S_C) signal among the image signals.

Specifically, the S_Y signal ('I / M_S_Y' signal) input from the main body is applied to the terminal '3', and the S_C signal ('I / M_S_C' signal) is applied to the terminal '6'. The S_Y signal ('I / T_S_Y' signal) received from the first TV 510 is applied to the terminal '12', and the S_C signal ('I / T_S_C' signal) is applied to the terminal '9'.

In addition, the S_Y signal ('O / T_S_Y' signal) output to the second TV 520 is output at the terminal '4', and the S_C signal ('O / T_S_C' signal) is output at the terminal '7'. The S_Y signal ('O / M_S_Y' signal) output to the main body is output from the terminal '13', and the S_C signal ('O / M_S_C' signal) is output from the terminal '10'.

The control signal output from the main body is applied to the terminal '1' of the second switching unit 453.

The third switching unit 455 sets the input / output path of the Audio_Left (A_L) signal among the image signals.

Specifically, the A_L signal ('I / M_A_L' signal) input from the main body is applied to the terminal '3', and the A_L signal ('I / T_A_L' signal) input from the first TV 510 is connected to the terminal '12'. Is applied. The A_L signal ('O / T_A_L' signal) output to the second TV 520 is output at the terminal '4', and the A_L signal ('O / M_A_L' signal) output to the main body is output at the terminal '13'. Is output.

The control signal output from the main body is applied to the terminal '1' of the third switching unit 455.

Hereinafter, the video signal input / output path automatic switching method will be described in detail with reference to FIGS. 4 to 8.

4 and 6, first, the cradle 400 determines whether the main body is 'powered on' (S610). When the main body is 'powered on', the second control unit 233 of the main body applies a control signal indicating this to the switching unit 450 through the cradle connecting terminal 133 and the main body connecting terminal 427. The switching unit 450 detects this control signal to determine whether the main body is 'powered on'.

More specifically, referring to FIG. 7, when the main body is 'powered on', the control signal is a logic level 'Low' signal, which causes the transistor Q to be 'turned on', resulting in a first switching unit. A logic level 'High' signal is applied to terminal '1' of 451. When the logic level 'High' signal is applied to the terminal '1', the first switching unit 451 determines that the main body is 'powered on'.

Referring to FIG. 8, when the main body is 'powered off', the control signal is a logic level 'High' signal, which causes the transistor Q to be 'turned off', resulting in the first switching unit 451. The logic level 'Low' signal is applied to terminal '1'. When the logic level 'Low' signal is applied to the terminal '1', the first switching unit 451 determines that the main body is 'powered off'.

7 and 8 illustrate only the first switching unit 451, the same applies to the second switching unit 453 and the third switching unit 455.

This will be described with reference to FIGS. 4 and 6 again. If it is determined in step S610 that the main body is 'powered on', the switching unit 450 switches so that the contact 'a1' and the contact 'b1' are connected, and the contact 'a2' and the contact 'b2' are connected (S620). .

When the main body seated on the cradle 400 is 'powered on', the main body may operate in any one of a 'storage mode' and a 'playback mode'. 'Storage Mode' decodes the video signal input from the external A / V device through the cradle connection terminal 133 in the NTSC / PAL decoder 220, delivers to the CDDEC (340) through the MUX 330 to MPEG4 format After compression, the system bus 380 and the storage interface unit 370 are stored in the storage unit 250 through the operation mode.

In addition, the 'playing mode' transmits the image stored in the storage unit 250 to the CDDEC 340 through the storage unit interface 370 and the system bus 380 to extend the image, and then the MUX 330 and the GUI generator. In operation 350, the NTSC / PAL encoder 241 encodes the signal to the external A / V device through the cradle connection terminal 133 to reproduce the signal.

Therefore, when the main body is operated in the 'storage mode' (S630), the cradle 400 is a video input terminal 448, the switching unit 450 and the main body connecting terminal (video signal output from the first TV 510) Through 427, it is transmitted to the cradle connecting terminal 133 of the main body (S640).

More specifically, referring to FIG. 7, when the main body operates in the 'storage mode', the first switching unit 451 is output from the 'I / T_A_R' signal applied to the terminal '12' and the terminal '13'. The path is set internally so that the 'O / M_A_R' signal is the same. Such a setting is possible by bypassing the terminals '12' and '13'.

In addition, the first switching unit 451 sets a path internally such that the 'I / T_V' signal applied to the terminal '9' and the 'O / M_V' signal output from the terminal '10' are the same. This setting is possible by bypassing terminals '9' and '10'.

In FIG. 7, only the first switching unit 451 is illustrated and described, but the same applies to the second switching unit 453 and the third switching unit 455.

This will be described with reference to FIGS. 4 and 6 again. When the main body is operated in the 'playback mode' (S650), the cradle 400 receives the video signal output from the main body through the main body connecting terminal 427, the switching unit 450 and the image output terminal 444, the second The image input terminal 525 of the TV 520 is transferred to the terminal 525 (S660).

More specifically, referring to FIG. 7, when the main body operates in the 'playing mode', the first switching unit 451 is output from the 'I / M_A_R' signal applied to the terminal '3' and the terminal '4'. The path is set internally so that the 'O / T_A_R' signal is the same. This setting is possible by bypassing terminals '3' and '4'.

In addition, the first switching unit 451 sets a path internally such that the 'I / M_V' signal applied to the terminal '6' and the 'O / T_V' signal output from the terminal '7' are the same. This setting is possible by bypassing terminals '6' and '7'.

In FIG. 7, only the first switching unit 451 is illustrated and described, but the same applies to the second switching unit 453 and the third switching unit 455.

This will be described with reference to FIGS. 4 and 6 again. When it is determined in step S610 that the main body is 'powered off', the switching unit 450 switches so that the contact 'b1' and the contact 'c1' are connected and the contact 'b2' and the contact 'c2' are connected (S670). .

Therefore, the cradle 400 transmits the video signal output from the first TV 510 to the second TV 520 through the video input terminal 448, the switching unit 450, and the video output terminal 444. (S680).

More specifically, referring to FIG. 8, when the main body is 'powered off', the first switching unit 451 outputs an 'I / T_A_R' signal applied to the terminal '12' and a 'O' output from the terminal '4'. The / T_A_R 'signal is set internally so that the signal is the same. This setting is possible by bypassing the terminals '12' and '14' and bypassing the terminals '2' and '4'.

In addition, the first switching unit 451 sets a path internally such that the 'I / T_V' signal applied to the terminal '9' and the 'O / T_V' signal output from the terminal '7' are the same. This setting is possible by bypassing terminals '9' and '11' and bypassing terminals '5' and '7'.

Meanwhile, in FIG. 8, only the first switching unit 451 is illustrated and described, but the same applies to the second switching unit 453 and the third switching unit 455.

In the present embodiment, the TV is described as an external A / V device as an example. However, this is only an example. As an external A / V device, a camcorder, a PC, a video cassette recorder (VCR), a digital video disk player (DVDP), or the like is used. Of course this can be applied.

In addition, the case where a separate external A / V device is connected to each of the image input terminal 448 and the image output terminal 444 of the cradle 400 is illustrated and described, but one external A / V device is the cradle 400. Of course, the present invention can be applied to the case where both the video input terminal 448 and the video output terminal 444 are implemented.

In addition, in the present exemplary embodiment, the cradle 400 in which the main body is mounted is described as an example of an automatic input / output path switching device of an image signal. However, the cradle 400 may be implemented as a separate device instead of the cradle 400.

As described above, according to the present invention, the cradle on which the portable composite apparatus is seated automatically sets a path for transmitting a video signal between the portable composite apparatus and external A / V devices according to the operation mode of the portable composite apparatus. . Therefore, according to the operation mode of the portable composite device, it is possible to prevent the inconvenience of the user to separately connect the cable between the portable composite device and the external A / V device.

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.

Figure 1a is a perspective view showing the front and right side of the portable composite device,

Figure 1b is a view showing the lower surface of the portable composite device,

Figure 1c is a perspective view showing the back and left side of the portable composite device,

2 is an internal block diagram of a portable multi-device;

3a is a perspective view of the front of the cradle;

3b is a perspective view of the back of the cradle;

Figure 3c is a view showing a case where the portable composite device is mounted on the cradle,

4 is a block diagram provided to explain an automatic switching function of a video signal input / output path of a cradle;

5 is a view provided to explain the switching unit of FIG. 4;

6 is a flowchart provided to explain a video signal input / output path automatic switching method according to an embodiment of the present invention;

7 and 8 are views provided to explain a process of automatically switching an image signal input / output path by the first switching unit.

Explanation of symbols on the main parts of the drawings

210: recording unit 231: operation unit

233: second control unit 240: display unit

243: LCD 250: storage

251: memory card 255: HDD

300: main control block 340: CODEC

350: GUI generation unit 360: first control unit

Claims (13)

In the input and output path automatic switching device of the video signal to which the main body that can input and output the video signal, A main body connecting unit which receives the video signal output from the main body and outputs the video signal to be input to the main body; An input / output unit configured to receive the video signal output from an external device capable of inputting and outputting the video signal and to output the video signal to be input to the external device; And A switching for switching the video signal input from any one of the main body connecting unit and the input / output unit to be output through any one of the main body connecting unit and the input / output unit based on the control signal received from the main body; Input and output path automatic switching device for a video signal comprising a. The method of claim 1, The switching unit, And when the control signal means power-on of the main body, switching the video signal input from the input / output unit to be output through the main body connection part. The method of claim 2, The switching unit, When the main body operates in a storage mode for storing the video signal output from the external device, the video signal input from the input / output unit is switched so that the output via the main body connection unit I / O path automatic switching device. The method of claim 1, The switching unit, And when the control signal means power-on of the main body, switching the video signal inputted from the main body connecting part to be output through the input / output part. The method of claim 4, wherein The switching unit, When the main body is operated in a reproducing mode for reproducing the pre-stored video signal to the external device, the video signal input from the main body connecting unit is switched so that the output through the input / output unit of the I / O path automatic switching device. The method of claim 1, The input / output unit, An input unit configured to receive the video signal output from a first external device capable of outputting the video signal; And And an output unit for outputting the video signal to be input to a second external device capable of receiving the video signal. The method of claim 6, The switching unit, And the control signal indicates power-off of the main body, and switches the video signal inputted from the input unit to be outputted through the output unit. In the video signal input and output path automatic switching method between the main body and the external device that can input / output video signals, a) receiving a control signal from the main body; And b) switching the video signal input from any one of the main body and the external device to one of the main body and the external device based on the control signal. I / O path automatic switching method. The method of claim 8, B), And when the control signal means power-on of the main body, switching the video signal input from the external device to be output to the main body. The method of claim 9, B), When the main body operates in the storage mode for storing the video signal output from the external device, the video signal input from the external device is switched to output to the main body, characterized in that the automatic input and output path of the video signal How to switch. The method of claim 8, B), And when the control signal means power-on of the main body, switching the video signal input from the main body to be output to the external device. The method of claim 11, B), When the main body operates in a reproducing mode for reproducing the pre-stored video signal to the external device, the input and output path of the video signal automatically switching to output the video signal input from the main body to the external device How to switch. The method of claim 8, The external device, A first external device capable of outputting the video signal and a second external device capable of receiving the video signal, B), And when the control signal means power-off of the main body, switching the video signal input from the first external device to be output to the second external device.