KR940004501B1 - Double deck vcr system - Google Patents

Abstract

The system performs the sequence recording/reproducing, simultaneous recording/ reproducing etc. with a single switch operation. The system includes analog switches (SW11-12) switching an input video signal to a first or a second VCR (11,12) selectively, an analog switch (SW13) providing an output signal selectively, and a controller (30) controlling the switches and the VCRs. The output signals from each VCR are provided to the television or monitor through buffer amplifiers (5,7) and output terminals (8,10).

Description

Double Deck VCR System

1 is a block diagram of a double deck VCR system configured to provide various functions in accordance with the present invention.

2A to 2E are flowcharts illustrating a video signal processing process of a double deck VCR system according to the present invention.

* Explanation of symbols for main parts of the drawings

2: tuner 11 and 12: first and second VCR

30: micom SW5: multi mode selection switch

SW7: Output selector switch SW11 and SW12: Input selector switch

SW8 and SW9: input selector switch SW13: output selector switch

The present invention relates to a double deck video cassette recorder (hereinafter referred to as a double deck VCR), in particular, to perform a sequential recording mode, sequential playback mode, self recording mode, playback recording merge mode, simultaneous playback mode, simultaneous recording mode A multifunctional double deck VCR system is provided which processes the signals associated with each VCR deck.

In general, a typical VCR is composed of one VCR deck to perform recording and playback functions. Recently, a multi-deck VCR system in which two or more VCR decks are integrated into one system so as to efficiently perform copy and edit functions between VCRs is used. A representative system is a double deck VCR system comprising two VCR decks. This double deck VCR system combines the functionality of a typical single VCR system with the mutual copy function described above, simultaneous recording with two decks simultaneously, and simultaneous playback with two decks simultaneously. And a playback / recording merging function for recording a TV signal or a signal from another external VCR in another deck while playing in one VCR deck.

However, the conventional double deck VCR system only performs a very simple function of combining two VCRs, and when the content of a video program to be recorded is more than one tape, one VCR deck completes the recording function and then another It is not possible to perform the sequential recording function in which the VCR deck performs the continuous recording function, and the sequential playback function in which the other deck performs the continuous playback function after one deck completes the playback function. Has a complex configuration, with each switch corresponding to.

Therefore, it is an object of the present invention for each VCR deck so that a double deck VCR system can perform sequential recording, sequential playback, merged playback recording, simultaneous playback, simultaneous recording and self recording functions by operation of one switch. It provides a versatile double deck VCR system suitable for carrying signals.

A multi-function double deck VCR system according to the present invention for achieving this object comprises a first VCR, which is equipped with a video tape and performs a playback and recording function on the tape; A second VCR mounted with a video tape, the second VCR performing a playback and recording function on the tape; The first VCR selectively outputs a TV signal through an antenna and a tuner, an external video signal applied from another VCR or a video camera connected to an external video signal input terminal, or an output signal reproduced from the second VCR by changing a connection state therein. A first input selection switch provided by the controller; A second input selection switch for selectively providing a TV signal, an external video signal or a reproduction output signal from the first VCR to the second VCR; An output selection switch for selectively outputting a signal reproduced from the TV signal, the external video signal, or the first or second VCR by changing its internal connection state; By repeating the states sequentially, a sequential recording mode in which each VCR performs a recording function sequentially, a sequential playback mode in which each VCR performs a sequential playback function, and one VCR playing back and another VCR A self-recording mode that performs a recording function, and a playback recording merge mode in which the first VCR performs a playback function and the second VCR records a TV signal or an external signal; A simultaneous playback mode in which each VCR simultaneously performs a playback function; One multi-mode selection switch for selecting a simultaneous recording mode in which each VCR simultaneously performs a recording function; In response to the selected mode of the multi-mode selection switch, the first and second VCRs respectively provide a control signal to perform the selected mode, and provide a control signal to provide an input path corresponding to the selected mode. And control means for providing a control signal for forming an output path corresponding to the selected mode with the output selection switch.

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

Referring to FIG. 1, a multifunctional double deck VCR system according to the present invention is shown.

The multi-function double deck VCR system 100 is equipped with a video tape, and has a circuit configuration for recording and playback with respect to the video tape, the first and second VCRs 11 and 12, and the first and second VCRs respectively. First and second input selection analog switches SW11 and SW12 for selectively transferring various video signals to be applied, output selection analog switches SW13 for selectively outputting various video signals, and the respective switches. And control means 30 for generating signals for controlling the first and second VCRs.

The first and second VCRs 11 and 12 are operated for reproduction or recording by respective control signals provided from the control means 30, respectively. The output reproduced in the first VCR 11 is connected to the input of the second VCR 12, and the output reproduced in the VCR 12 is connected to the input of the first VCR 11. In addition, the output signal reproduced in each VCR may be provided to a monitor such as an external TV via respective buffer amplifiers 5 and 7 and respective video signal output terminals 8 and 10, respectively.

The TV broadcast signal is input through the antenna 1 and the tuner 2, and the video signal from another external VCR or video camera is input through the video signal input terminal 3 and the buffer 4, and the two signals are A first input switch SW11 for transmitting an input signal to the first VCR 11 and a second input switch SW12 for transmitting an input signal to the second VCR 12 are respectively applied.

The first and second input selection analog switches SW11 and SW12 have a first terminal X0 receiving a signal reproduced from different VCRs, a second terminal X1 receiving a TV broadcast signal, and an external video signal. It has a third terminal (X2) receiving the two, and two control terminals (C0) (C1) to which the control signal of the control means 30 is applied, and through the output terminal (Y), respectively, the first and second VCR ( 11) and (12).

The output selection analog switch SW13 includes a first terminal X0 to which a signal reproduced from the first VCR 11 is applied, a third terminal X2 to which a TV broadcast signal is applied, and an external video signal. Two terminals X1, a fourth terminal X3 to which a signal reproduced from the second VCR 12 is applied, and two control terminals C0 and C1 to which a control signal of the control means 30 is applied; It is connected to the video output terminal 9 via the output terminal Y.

The control means 30 comprises two control signal output terminals P0 and P1 connected to the control terminals C0 and C1 of the first input selection switch SW11 and the control terminal C0 of the second input switch SW12. Two terminals P2 and P3 connected to C1, and respective terminals P4 and P5 for outputting signals respectively controlling the recording and playback functions of the respective VCRs 11 and 12. Have. When the signal provided from the terminals P0 (P1) of the control means 30 to the control means C0 (C1) of the input switch SW11 is low ("L" or "0"), The first terminal (X0) is selected, the second terminal (X1) when the high ("H" or "1") and low, respectively, and the third terminal (X2) is selected when the respective (H) (H) The same applies to another input selector switch SW12, except that the terminals of the control means 30 are P2 and P3. On the other hand, the switch SW13 is made of the switch SW13 when the signals supplied from the terminals P6 and P7 of the microcomputer 30 to the (C0) and C1 of the output selection switch SW13 are all (L). When terminal 1 (X0) is each (H) (L), terminal 2 (X1) is respectively, terminal (L) (H) is third terminal (X2), respectively (H) (H) terminal 4 is (X3) The position is configured to be selected.

The VCRs 11 and 12 each perform a recording function when the (H) signal is output from the terminals P4 and P5 of the microcomputer 30, respectively, and the playback function when the (L) signal is output. It is configured to perform.

The control means 30 is also connected to its input terminals with switches SW5, SW7, SW8, SW9 and a plurality of light emitting diodes L1 to L16.

The control means 30 controls the input and output selection switches SW11, SW12 and SW13 in response to the operation of the switches to form a corresponding signal path.

The input switching switch S7 causes the TV switch or the external video signal to be selected with respect to the switch SW11 according to its on or off state, and the input switching switch SW8 is connected to the switch SW12 according to its on or off state. With respect to the TV signal or the external video signal, the output switching switch SW9 allows the output signal to be selected for the switch SW13 according to its on or off state.

The multi-mode selection switch SW5 has a sequential recording mode in which each VCR performs a recording function sequentially by sequentially repeating its state by a user, a sequential playback mode in which each VCR performs a playback function sequentially, Own recording mode in which one VCR plays back and performs the other recording function, playback / record merge mode in which the first deck performs only the playback function and the second VCR records TV signals or external video signals, and each VCR This selects a simultaneous recording mode that simultaneously performs a recording function and a simultaneous playback mode where each VCR simultaneously performs a playback function.

The control means 30 allows to perform the mode selected by the mode selection switch SW5, and emits the diodes L1 to L6 corresponding to the selection. That is, when the switch SW5 is pressed once, the diode L1 is used as the simultaneous recording mode, the second time is pressed, the diode L2 is used as the sequential recording mode, the third time is pressed, the diode L3 is used as the play / record merge mode, and the fourth time is the copy mode. When the diode L4 is pressed five times, the diode L5 is pressed as the sequential reproduction mode, and when it is pressed six times, the diode L6 is emitted as the synchronous reproduction mode, and the seventh time is returned to the first simultaneous recording mode. The set of diodes L7 to L10 respectively emits light corresponding to the selection of the first to fourth terminals X0 to X3 with respect to the output switch SW13. One set of diodes L11 to L13 and another set of diodes L14 to L16 are adapted to the selection of the first to third terminals X0 to X2 with respect to the input switches SW12 and SW11, respectively. Therefore, each of the light emits correspondingly.

That is, the diode L7 emits light when the position of the terminal X0 of the switch SW13 is selected, and the diode L8 emits light when the position of the terminal X1 is selected. The selected one is displayed in luminescence. The resistors R1 to R16 connected to each diode act as current limiting resistors. The control means for performing such a function can be implemented using a microcomputer for servo and system control widely used in the VCR.

The signal flow of the double deck VCR according to the present invention will be described, for example, in the simultaneous recording mode in which the mode selection switch S5 is pressed once.

In response to the operation of the switch SW5, the microcomputer 30 emits the diode L1 indicating the simultaneous recording mode. In addition, the microcomputer outputs the (H) signal through the terminals P4 and P5, respectively. Thus, both the VCRs 11 and 12 are in the recording mode operation state. Then the microcomputer 30 causes the TV signal or the external video signal to be recorded according to the operating state of the switch SW7. That is, when the switch SW7 is in the on state, all of the (H) signals are output through the terminals P0 and P1 to record an external video signal, and when the switch SW7 is in the off state, the (H) and (L), respectively. To output the signal to record the TV signal.

The double deck VCR system according to the present invention can perform a precise and reliable recording function by detecting whether a tape is mounted in each VCR during recording operation and whether there is a recording prevention tab. It was.

The other modes are described in detail with reference to the flowcharts of FIGS. 2A to 2E. As can be seen from the figure, it is shown that the six modes are performed, but it should be understood that general functions can also be performed according to a normal switch operation.

Referring to FIGS. 2A through 2E, the signal processing step of the double deck VCR system is largely divided into four steps. The first step P1 illustrated in FIG. 2A is a step of selecting an input signal of the first VCR 11. This step selects the position of each terminal of the input selector switch SW11 according to when the VCR 11 is in recording operation and the on and off states of the switch SW7.

The second step P2 shown in FIG. 2A is a step of selecting an input signal of the second VCR 12 similarly to the first step P1, when the VCR 12 is in the recording operation and the switch SW8. The connection position of each terminal of the input selection switch SW12 is selected in accordance with the on and off states.

The third step P3 shown in FIGS. 2B and 2C newly selects the connection position of each terminal of the output selection switch SW12 in the current state according to the on and off states of the switch SW9.

The fourth step P4 shown in FIGS. 2d and 2e is a step of performing the selected mode substantially in accordance with the sequential operating states of the mode selection switch SW5.

In these steps, the double deck VCR system 100 is initially set in the simultaneous playback mode state, and the output selection switch SW13 is set to the position of the third terminal X2. Therefore, only the diodes L6 and L9 are turned on, and the microcomputer 30 outputs the (L) signal which makes each of the VCRs 11 and 12 into the regeneration mode.

The microcomputer 30 according to the present invention uses four 1-bit registers A, B, C, and D. If A and B are set to 1, it is related to the reproducing operation of the first and second VCRs, and if C and D are set to 1, it is related to the recording operation of the first and second VCRs. In a double-deck VCR system, the A, B, C, and D bits are all cleared to zero (S0 step).

It can be assumed that the input and output of the VCRs 11 and 12 are currently selected in the simultaneous playback mode and are selected in steps P1, P2, and P3, so that the switch SW5 is actually operated. This will be described from (P4).

(A) Sequential Recording Mode

If the mode select switch SW5 has not been operated in the state of being set to the initial simultaneous regeneration mode in step 24, the process returns to the initial step S1 again, while the switch L5 has been operated once, the diode L1 Is emitted. If the switch SW5 is pressed while the diode L1 is turned on, the light emitting diode L2 is turned on and the diodes L1 and L3, L4, L5 and L6 are turned off. At this time, when the switch SW5 is pressed while the diode L2 is turned on, the diodes L1 to L6 are turned off according to the previous state, such that the diode L3 is turned on and the diode L2 is turned off. Since the diode L1 is turned on as described above, the process proceeds to the sequential recording mode from step S25 to steps S26 to S36.

Therefore, the microcomputer 30 turns on the diode L2 indicating the progressive recording mode (step S26), and determines whether C and D are H respectively through steps S27 and S28. Initially, since bits C and D are set to L, respectively, it is again determined whether recording of the VCR 11 or the VCR 12 is possible through steps S29 and S33.

In step S29, if the first VCR 11 is capable of recording, i.e., a tape is loaded, the microcomputer 30 outputs a (H) signal through the terminal P5 to record the VCR 11 for recording operation. And set C to (H) and D to (L), respectively. In step S31, it is determined that the tape being recorded is terminated by the signal provided from the end sensor (not shown) installed in the VCR 11, and if it is finished, clear C to (L) and through the terminal P5 ( The recording operation of the VCR 11 is canceled by outputting the L) signal.

Steps S33 to S36 are performed in a similar operation to that for the first VCR 11, and if it is determined that recording of the second VCR 12 is impossible in step S33, the process starts again from step S1. .

When the progressive recording mode is selected as described above, it is determined whether the switch SW9 is operated in step S3 through step S1. This step is for selectively recording a TV signal or an external video signal with respect to the first VCR 11 by the switch SW9, and if the switch SW9 is in an on state, the microcomputer 30 in step S4. Selects the terminal position of the first input selector switch SW11 as (X1) by outputting the H and L signals through its control terminals P0 and P1, respectively, and the switch SW9 is set to non- If it is in the OFF state, the terminal position of the switch SW11 is selected as (X2) by outputting the signals (H) and (H), respectively, through its control terminals P0 and P1 in step S5. Thus, the TV signal and the external video signal can be selectively recorded in steps S4 and S5, respectively, in which the diodes L15 and L16 will be lit.

Similarly, it is a step of recording a TV signal or an external video signal with respect to the second VCR 12 according to the operating state of the switch SW8. Therefore, by determining the operating state of the switch SW8 through step S7, a TV signal is selected in step S10, and an external video signal is selected in step S11.

Next, as an output step of step P3, it is determined through step S13 and step S15 to output any output to the video output terminal 8 by the switch SW13 in step S16. At present, since the double deck VCR does not need to operate the switch SW13 in the progressive recording mode, the continuous deck recording mode will be performed through the step S21.

(B) Play / Record Merge Mode

In step S24, when the mode selection switch SW5 is pressed in the state where the diode L2 is turned on (sequential recording mode), the merge mode is performed. Accordingly, the diode L3 is turned on (step S37), and the VCR 11 enters the VCR into the regeneration mode according to the respective (H) and (L) signals output from the microcomputer 30 through the terminals P4 and P5. 12 is switched to the recording mode state.

In the following steps (P1) and (P2), the description is the same as that of the sequential recording mode.

Then, in step S13 of step P3, since the diode L3 is turned on from step S37, the microcomputer 30 has its control terminal P6 via the signal P7 respectively for the signal L (L). Output and select output selector switch (SW13) to (X0). Thus, the video signal reproduced from the VCR 11 can be transmitted to the outside via the video output terminal 23.

(C) Self recording mode

In step S24, if the mode selection switch SW5 is pressed in the state where the diode L3 is turned on (playback / recording merge mode), the diode L6 is turned on in step S39 to indicate that it is a self-recording mode ecology. .

In step S40 and step S41, it is judged whether or not the tape is mounted in each of the VCRs 11 and 12, and in step S42 and step S43, it is judged whether the tape is in a recording protection state. . If it is determined as the anti-recording state in steps S42 and S43, this routine will be repeated until another mode is selected by the user, but if it is determined that any tape is not in the anti-record state, step S45 The copying operation to tapes mounted on different VCRs may be performed through () and (S46).

Next, unlike the sequential recording mode in steps P1 and P2, since the diode L4 is turned on in steps S1 and S7, the VCR is operated to record in steps S2 and S8, respectively. The positions of the input selection switches SW11 and SW12 are selected so that the video signals reproduced from the opposing VCR are input with respect to.

In addition, in step P3, the output of the switch S7 may be selectively provided to the video output terminal 23 according to the operation of the switch S7, and the self recording mode may be performed from step S22 through step S21.

(D) Sequential Play Mode

Next, when the mode select switch SW5 is pressed in the state in which the diode L4 is turned on (self-recording mode) in step S24, the diode L5 is turned on in step S47, indicating that it is in the progressive playback mode. do. In steps S48 and S49, it is determined whether A and B are H, respectively. Initially, since A and B are in the L state, the process proceeds to the next step. In step S50 and S55, it is determined whether the tape is loaded.

In step S51, the first VCR 11 is switched to the regeneration mode so that A is set to H and the position of the output selection switch SW13 is selected as the position (X0) which transmits the output of the first VCR 11, thereby providing a diode. (L7) is turned on (L52). In step S53, the end state of the tape is determined. In step S54, when the tape is finished, A is cleared to (L), and the VCR 11 is switched to the rewind mode to turn off the diode L7. .

The series of steps S56 to S58 performed on the second VCR 12 may be performed in the opposite manner to the steps performed on the first VCR.

Steps P1 to P3 will proceed to the same step as in the sequential recording mode, and the step will be repeated through step S23.

(E) Simultaneous playback mode

The following describes the sequential regeneration mode selected by pressing the mode selection switch SW5 in the state where the diode L5 is turned on (sequential regeneration mode) in step S24.

Through step S25, the die L6 is turned on in step S59, and each VCR is switched to the regeneration mode by the control of the microcomputer 30 in step S60. In steps P1 to P3, the same operation as that of the sequential recording mode is performed, and the step will be repeated.

(F) Simultaneous recording mode

Next is a simultaneous recording mode in which the mode select switch SW5 is pressed in the state where the diode L6 is turned on (simultaneous playback mode), and the diode L1 is turned on (step S60), and each VCR is controlled by the microcomputer 30. Is switched to the recording mode (steps S61 and S62), and the same operations as the sequential recording mode are performed through steps P1 to P3, and the above steps will be repeated.

As described above, the double deck VCR constructed and operated in accordance with the present invention can provide a function that can be freely performed by using the mode selection switch operated by the user's selection.

Claims (3)

A first VCR (11) on which a video tape is mounted and which plays and records functions on the tape; A second VCR (12) on which a video tape is mounted and which plays and records functions on the tape; By changing the connection state therein, the TV signal through the antenna 1 and the tuner 2, the external video signal applied from another VCR or video camera connected to the external video signal input terminal 3, or the second VCR 12 A first input selection switch SW11 for selectively providing an output signal reproduced from the < RTI ID = 0.0 > 1) < / RTI > to the first VCR 11; A second input selection switch (SW12) for selectively providing said TV signal, an external video signal or an output signal reproduced from said first VCR (11) to said second VCR (12); An output selection switch (SW13) for selectively outputting a signal reproduced from the TV signal, the external video signal, or the first or second VCR by changing its internal connection state; By repeating the states sequentially, a sequential recording mode in which each VCR performs a recording function sequentially, a sequential playback mode in which each VCR performs a sequential playback function, and one VCR playing back and another VCR A self-recording mode that performs a recording function, a playback / recording merge mode in which the first VCR performs a playback function, and a second VCR records a TV signal or an external signal, and a simultaneous playback mode in which each VCR performs a playback function simultaneously. A multi-mode selection switch SW5 for selecting a simultaneous recording mode in which each VCR simultaneously performs a recording function; Responding to the selected mode of the multi-mode selection switch SW5, the first and second control signals are respectively provided so that each of the first and second VCRs performs the selected mode, and an input path corresponding to the selected mode is provided. The third and fourth control signals are provided to the first and second input selection switches SW11 and SW12, respectively, and the output selection switches SW13 form an output path corresponding to the selected mode. A multi-functional double deck VCR system comprising control means (30) for providing a fifth control signal. 2. The first input selection switch SW11 has a first position X0 for receiving a reproduced signal of the second VCR by means of two third control signals provided from the control means 30. And a second position X1 for receiving the TV signal and a third position X2 for receiving the external video signal, wherein the second input selection switch SW12 is provided from the control means 30. A first position (X0) for receiving the reproduced signal of the first VCR, a second position (X1) for receiving the TV signal, and a third for receiving the external video signal by means of two fourth control signals The output selection switch SW13 is controlled at the position X2, and the output selection switch SW13 is provided with the first position X0 for outputting the reproduced signal of the first VCR by the fifth two control signals provided from the control means 30; A second position for outputting the TV signal, a third position (X2) for outputting the external video signal, and the second V Multifunctional double deck VCR system controlled by the fourth position (X3) to output the reproduced signal of the CR. According to claim 1, further comprising an input switching switch (SW7) and (SW8) and an output switching switch (SW9) respectively connected to the microcomputer (30), the microcomputer (30) and the respective switch (SW7) and Responding to the on or off state of SW8, select the (X1) or (X2) position for each of the switches SW11 and SW12 respectively, and switch in response to the on or off state of the switch SW9. A multi-function double deck VCR system for selecting positions (X0) to (X3) with respect to (SW13).