KR100369580B1 - Camcorder capable of automatically converting y/c signals into separated/mixed y/c signals - Google Patents

Abstract

PURPOSE: A camcorder capable of automatically converting Y/C signals into separated/mixed Y/C signals is provided to automatically convert Y/C signals inputted from one A/V equipment into the separated Y/C signals or the mixed Y/C signals being appropriate for an output terminal of another A/V equipment. CONSTITUTION: A mode selector(21) selects input/output of Y/C signals and conversion of Y/C signals of an S terminal(15) and an A/V terminal(17) installed in the camcorder. A control unit(22) controls signal processing according to a selected signal by the mode selector. Switches(23,24) select one of the various operations according to a control signal outputted from the control unit. A separator(25) separates a mixed Y/C signal. When the two A/V equipments having each different terminal are connected with each other to be used, the S terminal is connected with one A/V equipment having an S terminal only, and the A/V terminal is connected with another A/V equipment having an A/V terminal only.

Description

Separate Y / C signal / camcorder capable of automatic switching of composite.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a camcorder capable of automatically separating / compositing Y / C signals.

The present invention relates to a Hi-Band camcorder having an S terminal and an A / V terminal. More particularly, the present invention relates to a camcorder capable of automatically separating / combining multiple Y / C signals so that a Y / .

In general, a compact and lightweight Hi-Band camcorder, ie, a camcorder with an S / Y / C separation signal transmission system and an A / V terminal as a Y / C composite signal transmission system, Simultaneous input / output to A / V terminal and export to the same screen. The process of outputting a signal from the camcorder will be described with reference to the accompanying drawings.

1 is a block diagram showing a Y / C signal processing apparatus in a general Hi-Band camcorder. As shown in FIG. 1, a first Y / C signal unit 11 for selecting a camera mode, a second Y / C signal unit 12 input from an external device, and a VTR. And the playback / recording signal unit 13 at the time of camera mode selection is connected to a signal processing unit 14 that processes a signal applied thereto. The signal processing unit 14 is connected to an S terminal 15 for receiving and outputting the signal processed Y / C signal in a separated state. The mixing unit 16 is connected to the signal processing unit 14 to mix signal processed Y / C signals. The mixer unit 16 is connected to an A / V terminal 17 ) Are connected to each other. The operation of the Hi-Band camcorder constructed as described above will be described in more detail.

When a camcorder user selects a camera mode or a VTR mode or tries to use an external device connected to the camcorder, Y / C signals for the selection or connection status are input to the respective signal portions, i.e., the first Y / C signal portion 11, The Y / C signals are applied from the second Y / C signal unit 12 and the reproduction / recording signal unit 13 to the signal processing unit 14. [ The signal processing unit 14 processes the received Y / C signal according to each situation. The signal-processed Y / C signal is simultaneously input to the S terminal 15 and the A / V terminal 17. [ That is, the signal-processed Y / C signal is applied to the S terminal 15 in the Y / C separation state, is further mixed in the mixing section 16 and applied to the A / V terminal 17 and simultaneously outputted to the screen.

Thus, since the Y / C signal applied to the general Hi-Band camcorder is simultaneously input to the S terminal 15 and the A / V terminal 17 and output to the screen, the S terminal 15 and the A / Work together.

The above-mentioned Hi-Band camcorder has two terminals, but among widely used A / V devices, there are devices having only one terminal among S terminal and A / V terminal. If you want to use these devices with only one terminal to be connected to each other, that is, if you want to use a device that has only the S terminal and a device that has only the A / V terminal, you can not send and receive the Y / C signal have.

Therefore, in order to solve such a problem, when the A / V devices having only one terminal are connected to each other and used, the Y / C signal inputted from the terminal of the one device is switched to the output terminal of the device to be outputted And a device as an intermediate connection medium for automatically switching the input Y / C signal so that the output Y / C signal can be output.

1 is a block diagram showing a Y / C signal processing apparatus in a general Hi-Band camcorder,

FIG. 2 is a block diagram showing an apparatus for separating / combining a Y / C signal in a Hi-Band camcorder according to the present invention.

3 is a flow chart illustrating the operation of the apparatus according to the present invention,

4 is a diagram showing an A / V device connected to a Hi-Band camcorder according to the present invention;

Description of the Related Art

11: first Y / C signal unit 13: playback / recording signal unit

14: Signal processor 15: S terminal

16: mixing section 17: A / V terminal

21: Mode selection unit 22:

23, 24: switch section 25: separating section

In order to solve such a problem, the present invention intends to use a Hi-Band camcorder as an intermediate connection device when an A / V device having only one terminal is used for mutual connection. That is, the A / V devices having only the terminals are connected to the respective terminals of the Hi-Band camcorder. The Y / C signal input to an arbitrary terminal of the camcorder is automatically switched according to the characteristics of the output terminal so that the Y / C signal can be output to any arbitrary terminal different from any other terminal, that is, the Y / C signal input terminal. Then, the automatically converted Y / C signal is outputted to the A / V device through the output terminal. Thus, the input Y / C signal is automatically switched and the automatically switched signal is output.

In this case, the two terminals of the Hi-Band camcorder do not simultaneously perform the input / output functions. If the S terminal is the input state, the A / V terminal is the output state. If the S terminal is the output state, To perform mutual functions.

Therefore, a mode selection unit for selecting a mode for automatically switching a signal input to each terminal to a general Hi-Band camcorder so that the Hi-Band camcorder can automatically switch and output the input Y / C signal to the output terminal A control unit for receiving a mode selection signal of the mode selection unit and controlling the system, and two switch units for selecting one of various possible operations according to a control signal of the control unit, and a Y / C separation signal.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing an apparatus for separating / composing Y / C signals automatically in a Hi-Band camcorder according to the present invention. 2 includes a mode selection unit 21 for selecting the Y / C signal input / output and Y / C signal switching of the two terminals 15 and 17 and a selection signal selection unit 21 for selecting the mode selection unit 21, A control unit 22 for controlling the signal processing is added. Further, switch parts 23 and 24 for selecting one of various possible operations according to the control signal of the control part 22, and a separation part 25 for separating the applied Y / C composite signal are further added Thereby constituting the constitution of the device according to the present invention. The operation of the Y / C signal separation / combination automatic switching apparatus according to the present invention will be described.

An A / V device having only an S terminal is connected to the S terminal 15, and an A / V device having only an A / V terminal is connected to the A / V terminal 17.

First, the operation of the apparatus according to the present invention in the case where a Y / C separation signal is input from the device having only the S terminal to the S terminal 15 will be described. The camcorder user selects the switching mode in the mode selection unit 21 mounted on the camcorder and the selection signal for the mode is applied to the control unit 22. [ The control unit 22 recognizes the applied signal and applies a control signal to the switch units 23 and 24. The first switch unit 23 receives the control signal and selects the S terminal 15 as the input state so that the Y / C separation signal is outputted to the signal processing unit 14. [ The Y / C separation signal input to the signal processing unit 14 is signal-processed and applied to the mixing unit 16. The mixing unit 16 combines the received Y / C separation signals. The second switch unit 24 receives the control signal from the control unit 22 and outputs the Y / C separation signal input to the S terminal 15 to the A / V terminal 17 ) As the output status. Thus, the combined Y / C composite signal is output to the A / V terminal 17 in the mixing section 16. [ The Y / C composite signal outputted to the A / V terminal 17 is applied to the A / V device having only the A / V terminal connected to the A / V terminal 17. As a result, the Y / C separation signal applied from the device having only the S terminal to the S terminal 15 of the camcorder is converted into the Y / C composite signal and the signal is transmitted to the A / V terminal 17 .

The operation of the apparatus according to the present invention in the case where the Y / C composite signal is input from the device having only the A / V terminal to the A / V terminal 17 will be described. The camcorder user selects the switching mode in the mode selection unit 21 mounted on the camcorder and the selection signal for the mode is applied to the control unit 22. [ The control unit 22 recognizes the applied signal and applies a control signal to the switch units 23 and 24. The second switch unit 24 receives the control signal and selects the A / V terminal 17 as the input state so that the Y / C composite signal inputted thereto is applied to the separator 25. Thus, the Y / C composite signal input to the A / V terminal 17 is applied to the separator 25. The separation unit 25 separates the applied Y / C composite signal and applies it to the signal processing unit 14. The first switch unit 23 receiving the control signal from the controller 22 controls the S terminal 15 so that the Y / C composite signal inputted to the A / V terminal 17 is outputted to the S terminal 15 Select the output status. Thus, the Y / C separation signal subjected to the signal processing in the signal processing section 14 is outputted to the S terminal 15. The Y / C separation signal outputted to the S terminal 15 is applied to the A / V device having only the S terminal connected to the S terminal 15. As a result, the Y / C composite signal applied from the device having only the A / V terminal to the A / V terminal 17 of the camcorder is converted into the Y / C separation signal and has only the S terminal connected to the S terminal 15 of the camcorder And output to the device.

In addition, the input / output states of the two terminals at the time of mode selection of the mode selection unit 21 will be described with reference to <Table 1>.

Table 1 below shows the signal input / output statuses of the two terminals according to the selection of the camcorder mode and the mode selection unit 21.

[Table 1]

First, let's look at Case 1 in Table 1 above. When the mode of the mode selection unit 21 is the input mode, both terminals in the camera mode of the camcorder mute the camera signal (mute). However, in the VTR mode of the camcorder, the two terminals are in a state of inputting a signal (signal input) during recording.

Next, look at Case 2. When the mode of the mode selection section 21 is the output mode, two terminals in the camera mode of the camcorder output camera signals such as photographing (signal output). Also, in the VTR mode of the camcorder, both terminals are in a state of outputting signals such as during playback (signal output).

Finally, let's look at Case 3. When the mode of the mode selection section 21 is the switching mode, both terminals in the camera mode of the camcorder mute the camera signal (mute). However, in the VCR mode of the camcorder, the A / V terminal is in the signal output state when the S terminal is in the signal input state and the A / V terminal is in the signal input state when the S terminal is in the signal output state.

3 is a flowchart illustrating an operation of the Y / C signal separation / hybrid automatic switching device in the Hi-Band camcorder according to the present invention.

When the A / V device having only the S terminal is connected to the S terminal 15 of the camcorder and the A / V device having only the A / V terminal is connected to the A / V terminal 17, The Y / C signal switching mode is selected (step 301). The control unit 22 receives the switching mode selection signal from the mode selection unit 21 and determines whether the Y / C signal applied from the A / V device is input to the S terminal 15 or the A / V terminal 17 (Step 302). As a result of the determination, if the Y / C signal applied from the A / V device is input to the S terminal 15, the controller 22 controls the system so that the Y / C signal is sequentially performed from step 303. If the Y / C signal applied from the A / V device is applied to the A / V terminal 17 as a result of the determination, the controller 22 controls the system so that the Y / C signal is sequentially performed from step 306.

First, let us consider the operational flow of the apparatus according to the present invention when the Y / C signal applied from the A / V device is inputted to the S terminal 15. The signal processing unit 14 receives the Y / C separation signal input to the S terminal 15 and processes the received signal (step 303). The signal-processed Y / C separation signal is applied to the mixer 16 so as to be outputted to the A / V terminal 17. [ The mixing unit 16 combines the received Y / C separation signals (step 304). The combined Y / C composite signal in the mixing unit 16 is output to the A / V terminal 17 (step 305). Therefore, the Y / C separation signal applied to the camcorder from the device having only the S terminal is converted into the Y / C composite signal and outputted to the device having only the A / V terminal.

Now, let us consider the operation flow of the apparatus according to the present invention when the Y / C signal applied from the A / V device is input to the A / V terminal 17. [ The Y / C composite signal input to the A / V terminal 17 is applied to the separator 25 so as to be output to the S terminal 15. The separation unit 25 separates the received Y / C composite signal into a Y / C signal (step 306). The Y / C separated signal is applied to the signal processing unit 14 and the signal processing unit 14 processes the received Y / C separation signal (Step 307). The Y / C separation signal processed by the signal processing unit 14 is output to the S terminal 15 (step 308). Therefore, the Y / C composite signal applied to the camcorder from the device having only the A / V terminal is converted to the Y / C separation signal and outputted to the device having only the S terminal.

FIG. 4 is a diagram showing that an A / V device having only one terminal in a Hi-Band camcorder is connected to a terminal to exchange signals. As shown in the figure, if a Y / C separation signal is input from the A / V device having only the S terminal to the S terminal, the camcorder converts the input signal into a Y / C composite signal and outputs it to the A / V terminal. The A / V terminal outputs the Y / C composite signal to the A / V device having only the A / V terminal. In addition, the camcorder can also play the opposite role of the two-terminal input / output function. That is, when the S terminal is in the signal input state, the A / V terminal is in the signal output state, and when the S terminal is in the signal output state, the A / V terminal performs the signal input / output function as the signal input state.

As described above, according to the present invention, in a camcorder having an S terminal and an A / V terminal, an input Y / C signal is supplied to an output terminal so that a Y / C signal input to one terminal can be output to another terminal To a camcorder capable of switching.

When the A / V devices having only one terminal are connected to each other to transmit / receive video signals, if the camcorder is used as an intermediate connection device, the video signals of the A / V devices can be exchanged smoothly.

Claims (3)

In the camcorder, Two terminals that perform the functions of the signal input / output functions; A mode selector for selecting a mode for automatically switching a signal inputted to the first terminal among the two terminals so that the signal can be outputted to the second terminal according to characteristics of the output terminal; A control unit for discriminating a terminal to which a signal is input according to the switching mode selection of the mode selecting unit and controlling each configuration according to the discrimination result; A mixing / separating unit for Y / C mixing input Y / C separation signals, Y / C separating input Y / C composite signals, and outputting Y / C separation signals; And Dividing unit to a signal input to the corresponding terminal according to a control signal of the control unit and outputting a signal output from the mixing / separating unit to a corresponding terminal, And a switch unit. [2] The camcorder according to claim 1, wherein the two terminals comprise an S terminal for input / output of a Y / C separation signal and an A / V terminal for input / output of a Y / C composite signal. The camcorder according to claim 1, wherein the camcorder is used as an intermediate connection device of A / V devices having only one terminal.