KR19980049120U - VSI System with Line Jack - Google Patents

Abstract

The present invention relates to a VSI system having a line jack input / output function that enables external line jacks to be used as input / output in a VSI. In the related art, a line jack used in such a system is an audio line input / output stage and a video line input. Since each is used as an output terminal, there are many limitations in the use environment using these four jacks.

The present invention provides a system for changing input and output of line jacks between the IFF unit 105, the audio recording processing unit 109 and the video recording processing unit 107, and the line input / output terminals leading to the line side to improve the conventional problems. A microcomputer for controlling the entry and exit of the line jacks by controlling the entry / exit switch 11 and the input selector switch 12 and the input / exit switch 11 and the input selector switch 12 to be selected. It is to provide a VSI system having a line jack entry and exit function including (2).

Description

VSI System with Line Jack

The present invention relates to a VSI system having a line jack entry / exit function that enables the input side and the output side of a line jack used in a VSI to be interchanged. It is possible to make flexible use of these input / output jacks by making common use of the input / output jacks and video input / output jacks.

A general VSI system records various video / audio sources on a recording tape and reproduces and records the recorded video / audio program. An example of such a conventional VSI system is illustrated in FIG. 1.

Here, the scat jack 100 for connecting various input / output audio / video / control signals in the system, the phone jack connecting portion 101 for connecting various external audio / video signals through the phone jack, and the TV receiver antenna and the tuner side. And an RF modulator 103, a power supply unit 102 for providing system power, a BC tuner 104 for receiving broadcast signals, and an IF unit 105 for intermediate frequency processing and demodulation.

In addition, the system includes an OSD unit 106 for performing a screen recording or channel preset information interactively, and a video recording / reproducing unit 107 for processing a video signal when recording or playing a video signal. , The amplifier module 112 of an operation of amplifying the output signal processed by the video recording / reprocessing unit 107 to a predetermined size and providing it to the video head (VH), and performing various operations such as reservation time / channel digitron driving and the like. Timer and servo circuit for controlling the drive of the deck side motor are included.

Moreover, the system control part 111 including the system microcomputer 2 etc. which control the various processing tasks of the said system, the logic circuit part 108 containing a key input and display means, and the audio recording / reprocessing part of an audio system 109, an input selector 110 for selectively connecting an air broadcasting system input and an external input, a cam switch for providing information on the deck side to the system microcomputer 2, a drum motor DM, and a capstan motor ( CM), a loading motor LM, an audio head AH, and the like.

In addition, the system circuit associated with the phone jack connection 101 in the system has shown this in more detail as shown in FIG.

Here, the audio line output jack ALO and the audio line input jack ALI are connected to the Eye F 105 and the audio recording processing unit 109, and the video line output jack VLO is connected to the video recording processing unit 109. And video line input jacks (VLI) are installed.

In addition, an audio channel / line selection switch 21 for selecting a line and a broadcast signal is provided between the audio line input jack ALI, the IFP unit 105, and the audio recording material processing unit 109. A video channel / line select switch 22 for selecting a line and a broadcast signal is also provided between the input jack VLI, the IFT unit 105, and the video recording processing unit 107.

In the circuit, audio line input / output jacks (ALI, ALO) and video line input / output jacks (VLI, VLO) are fixedly used as input and output jacks of an audio signal line or as input and output jacks of a video signal, respectively. have.

However, in the prior art, four external connection jacks such as audio line input / output jacks (ALI, ALO) and video line input / output jacks (VLI, VLO) are fixed as inputs and outputs. Fixed use of jacks or output jacks is not desirable in that the system uses a variety of line inputs or outputs.

It is an object of the present invention to expect various uses of these jacks by selecting and using external line speed jacks used in the system for improving the above problems.

In particular, the present invention provides an input / output change switch unit and an input selection switch which selects input / output change of line jacks between the IFF unit, the audio recording unit, the video recording unit, and the line input / output terminal leading to the line side to realize the object of the above example. It is characterized by a VSI system having a switch unit and a line jack entry / exit function having a configuration including a microcomputer that controls the entry / exit change switch unit and the input selection switch unit to perform the entry / exit change of the line jacks.

Hereinafter, more specific features of the present invention will be understood by describing the same in detail with the accompanying drawings.

1 is a circuit block diagram of a typical Video Cassette Recorder (VCR) system.

2 is a system circuit block diagram related to a conventional line jack

3 is a system circuit block diagram of the present invention.

** Explanation of symbols on the main parts of the drawing **

11. Audio change switch unit 12. Video mirror switch unit

2. micro computer

That is, Figure 3 shows a circuit block diagram of a VSI system having a function for line jack entry and exit according to the present invention.

Here, the input / output change switch unit 11 which selects the input / output change of the line jacks between the IFF unit 105, the audio recording member 109, the video recording member 107, and the line input / output terminal connected to the line side of the system. And the input selection switch unit 12, and the entry / exit switch 11 and the input selection switch unit 12 to control the entry / exit of the line jacks.

The filling change switch section 11 functions as an electronic switch under the control of the microcomputer 2, and the fixed contacts a, a1, b, and b1 to which the movable terminals connected to the fixed contacts c and c1 are selectively connected. It is made up of.

In addition, the fixed contact c is connected to the audio line output jack (ALO), c1 is connected to the video line input jack (VLO), the fixed contact a is the output side of the audio recording processing unit 109 and a1 is the video recording processing unit 107. And the fixed contact b is connected to the fixed contact f of the input selector switch 12, and b1 is connected to f1.

In addition, the movable terminals are connected to the fixed contacts g and g1 on the input selection switch unit 12 side, and the video output side of the IF unit 105 is connected to the fixed contacts d and d1, and the fixed contacts e and e1 are respectively connected. Audio / video line input jacks (ALI, VLI) are connected.

The present invention of such a configuration is that when the user gives the line input and output change setting command to the microcomputer 2 through a key input unit such as a remote control transmitter as shown in FIG. 3, the microcomputer 2 switches from the current mode to the change mode. .

For example, in the normal state, the movable terminal of the entry / exit switch 11 is connected to the fixed contact ca, c1-a1 so that the audio line output jack ALO and the video line output jack VLO are connected to the audio recording processing unit 109 and the video. It is connected to the output of the green ash processing unit 107 is used as a normal audio / video output jack.

At this time, the input selection switch unit 12 is a signal from the I F unit 105 and a signal from the line input is effective.

On the other hand, in the input / output change modes of these jacks and the like, the movable terminal of the input / output switch unit 11 is connected to the fixed contact cb, c1-b1 so that the audio line output jack ALO and the video line output jack VLO are audio recording processing units. 109 is connected to the input side of the video recording material processing unit 107 to act as an input jack.

That is, the input selection switch unit 12 at this time is connected to the fixed contact g-f, g1-f1, and thus acts as an input of the audio / video recording processing unit 109, 107.

Similarly, the audio line input jack ALI and the video input jack VLI may also act as output jacks through the entry / exit switch 11 and the input selection switch 12 as described above. .

This design allows the external audio / video line input / output jacks used in the VSI system to be used more flexibly as external inputs or outputs as needed. There is an advantage.

Claims (1)

In a VSI system including an audio line input / output jack, a video line input / output jack, and a microcomputer, the system includes an I / F unit 105, an audio recording processing unit 109, a video recording processing unit 107, and a line input / output connected to a line side. Between the stages, the entry / exit switch 11 and the input selector switch 12 to select the entry / exit change of the line jacks, and the entry / exit switch 11 and the input selector switch 12 are controlled by the line. A VSI system having a line jack entry / exit function, which includes a microcomputer 2 that performs entry / exit change of jacks.