KR0143892B1 - Multi-back up apparatus of complex audio and video system - Google Patents

Abstract

A compact backup player, a video tape recorder and a multi-backup device of a composite audio / video system in which color television is integrally described are described. The key signals from the main microcomputer reconcon or key matrix input unit are inputted to receive a VTR, CD, TV. And generate a data signal for the deck unit and provide the data signal to the VTR microcomputer, the CD microcomputer, and the neck unit, and control the backup function of the sub-microcom by receiving power from the backup circuit during power failure.

Description

Complex Audio / Video System Multi-Backup Device

1 is a perspective view of a composite audio / video system having a multi-backup device according to the present invention;

2 is a block diagram of a composite audio / video system with a multi-backup device,

3 is a control flowchart of the main microcomputer, VTR microcomputer and CD microcomputer for controlling the apparatus of FIG.

* Explanation of symbols for main parts of the drawings

1: Video tape recorder 2: Neck part

3: color TV 4: compact disc player

20: main microcomputer 22: VTR microcomputer

30: CD microcomputer 50: Backup circuit

The present invention relates to an audio / video system in which a television, a video tape recorder, and a compact disc player are integrally formed, wherein a main audio is used to perform a backup function of a sub micom that controls the compact disc player and the video tape recorder, respectively. Relates to a video multi-backup device.

At present, the applicant is developing a complex audio / video system in which a color television, a video tape recorder and a compact disc player are integrally formed. Such a system is shown in FIG. The unit 2 is provided, and the television unit 3 is mounted on the neck unit 2, and the compact disc mounting unit 4A into which the compact disc player 4 can be inserted is installed at the upper end of the television unit 3. . The main power supply of this composite audio / video system is supplied by a main power switch 5 installed in the video tape recorder 1, which is designed to be operated mainly by the remote controller 6.

Therefore, in order to control each of these products, a separate microcomputer for controlling the main microphone, a video tape recorder, and a micro disk for controlling the compact disc player are separately installed to control the complex audio / video system by the set itself or by a remote control method. Since the backup function is performed separately for each microcomputer, it needs to be controlled centrally.

Therefore, the present invention controls the sub-microcom such as the main microcomputer, the video tape recorder, and the microcom for controlling the compact disc compact disc player, by controlling the multi-interface with each other. The purpose is to provide a backup device.

The present invention for achieving this object is installed on the upper side of the color television and the color television having a video tape recorder capable of reproducing a signal recorded on a video tape, a television broadcasting and / or a monitor capable of displaying the video signal. And a compact disc player capable of playing a compact disc, and a neck portion provided between the video tape recorder and the color television and moving the color television in left, right, up and down directions. A main microphone for receiving a key signal from a remote controller or a key mat or rig and outputting a data signal for controlling a videotape recorder, a television broadcaster, a compact disc player and a neck portion; A VTR micom that receives a data signal of the video tape recorder from the main micom and controls the video tape recorder deck; CD micom that receives data signals about compact disc playback from main micom and plays back compact disc, and backup circuit that generates backup power in case of power failure and provides it to main micro, and occurs in main micro when this backup circuit operates And a backup means including a pull-down resistor for providing the backup signal to the VTR and CD microcomputer.

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

FIG. 2 is a schematic block diagram of a composite audio / video system according to the present invention. The remote controller 6 shown in FIG. 1 has a function key for performing the function of the video cassette recorder 1, for example, VO1 ▲; VO1 ▼; CH ▲; CH ▼; PWR; PLAY; REC; FF; REW; SEARCH; PGM; Multiple keys, such as ENTER, and keys for operating the color television 3 (eg, PWR; CONTRAST; SHARPNESS; BRIGHT; TONE; COLOR); The key for operating the compact disc player 4 is for example OPEN / CLOSED; SEARCH; REPEAT; PAUSE; SKIP; MEMORY; PLAY; Various function keys such as TRACK INDEX are formed.

If the key for operating the video tape recorder 1 is input from the remote controller 6, the main microcomputer 20 detects the signal of the key matrix input unit 21. If the main power key (this is the video tape) When only the recorder is pressed), the main microcomputer 20 is supplied with power, and at this time, all of the circuit parts except the compact disc part of the circuit shown in FIG. 2 are enabled.

When the channel selection key is pressed from the key matrix input unit 21, the main microcomputer 20 provides the strobe signal to the video tape recorder microcomputer 22 to enable the microcomputer 22. Therefore, when the channel selection key is pressed, the corresponding data signal is input to the data input terminal Si of the VTR microcomputer 22 through the data output terminal So of the main microcomputer 20, and the VTR microcomputer 22 By controlling the phase lock loop 23 to generate a tuning voltage to the tuner 24, a broadcast channel signal input through the antenna 25 is tuned by the tuner 24 and input to the VTR microcomputer 22.

The VTR microcomputer 22 then controls the digitron 10 to cause it to display as text the function currently being performed. In addition, the VTR microcomputer 22 controls the on-screen display IC 26 to generate corresponding characters when the program is reserved, when a video tape recorder or television is performed, or when a compact disc player is performed. . Among the signals read from the videotape, the horizontal and vertical synchronizing signals are separated by a synchronizing signal separating unit (not shown) and applied to the on-screen display IC 26 to be used to make a character signal. The deck 27 and the servo device 28 then operate the video cassette recorder under the control of the VTR microcomputer 22.

On the other hand, if the user wants to operate the compact disc player 4 shown in FIG. 1 by operating the remote controller 6, the main microcom 20 receives the key signal to control the micro disc 30 for the compact disc player. In this case, the CD microcomputer 30 generates a signal for the motor driver 31 to drive the turntable driving motor 32. Then, as the motor 32 is rotated, the turntable 33 is rotated, and the compact disc 34 installed on the turntable 33 is rotated. When the compact disc 34 rotates, the pickup 35 reads the digital signal recorded on the compact disc 34 and applies it to the amplifier 36. The signal thus read is applied to a focus and tracking controller 37, which controls the actuator 38 to control the focusing and tracking of the pickup 35.

The digital compact disc signal input from the focus and tracking controller 37 is provided to the digital signal processor 39, processed, converted into an analog signal by the digital / analog converter 40, and then via the output amplifier 41. It may be output to the outside through the speakers 14 and 15.

On the other hand, during a power outage, the backup circuit 50 operates to apply backup power to the main microcomputer 20. At this time, the main microcomputer 20 recognizes the backup function. Therefore, the main microcomputer 20 opens the backup port BU. However, in the case of no backup, the backup port BU remains high. When the backup port is opened, the pull-down resistors 51 and 52 are connected to the VTR microcomputer 22 and the CD microcomputer 30 so that the sub port is connected to the sub port. A low state signal is applied to the backup ports of the microcomputers 22 and 30. At this time, the submicrons 22 and 30 recognize this and perform a backup mode state. That is, only one main microcomputer 20 needs a backup circuit without the need for each backup circuit 50 so that a redundant backup circuit is not necessary.

FIG. 3 is a control flowchart for controlling the apparatus shown in FIGS. 1 and 2, and when the power key from the remote controller 6 or the key matrix input unit 21 is input, the main microcomputer 20 recognizes this. The program proceeds from step 101 to step 102 to enable the respective ports of the VTR microcomputer 22 and the CD microcomputer 30. If the currently pressed key is a key for the video tape recorder, the program proceeds from step 103 to step 104, in which case the main microcomputer 20 provides the ETRVO signal STB by the VTR microcomputer 22 Enable this, and also provide the clock signal CLK, the data corresponding to the key input by the key matrix input unit 21 or the remote controller 6 through the data output terminal (So), the data of the VTR microcomputer 22 It is provided to the input terminal Si and the on-screen display IC 26.

In the VTR mode, when the currently pressed key is a tuner related key, the VTR microcomputer 22 operates the tuner 24 through the phase lock loop 23 by the tuner related data from the main microcom 20. TV broadcasting is tuned up (steps 105 and 106). However, if it is determined in step 106 that the currently pressed key is not related to the tuner, the VTR microcomputer 22 determines whether the data transmitted from the main microcomputer 20 relates to the on-screen display. If the current data is data related to the OSD, the program advances from step 107 to step 108 to control the on-screen display IC 26.

On the other hand, when the currently pressed key is a key related to the deck 27 (for example, PLAY, FF, REW, SEARCH), the VTR microcomputer 22 receives the data transmitted from the main microphone 20 and the deck 27 receives. And the servo device 28 (steps 109 and 110). However, if the key currently pressed in the VTR mode is not a tuner 24, OSD 26, or deck 27 related key, and the digitron related data 10, the program proceeds from step 111 to step 112. do. When the tuner, the OSD deck, and the digitron-related key are not pressed, the program proceeds from step 111 to step 113 to perform normal operation.

By the way, if it is determined in step 103 that the currently pressed key is not a key associated with the video tape recorder, the main microcomputer 20 determines whether it is a television related key, and if the input key is a television related key, stepping through the program The process proceeds from step 114 to step 115 where normal television is watched. If the key currently pressed is a key related to the neck unit 2, the main microcomputer 20 operates the neck unit 2 to move the program up, down, left, or right to step the program in step 116. Proceed to 117.

On the other hand, if the currently pressed key is a CD-related key (step 118), the main microcomputer 20 provides the CD microcomputer 30 with a data signal, a strobe signal, and a clock signal to cause the CD microcomputer 30 to perform the compact disc 34. To be reproduced (steps 119 and 120). If the power is not turned off in the VTR, CD, and TV modes, the program proceeds to step 113 to perform the corresponding mode.

When the composite audio / video system performs a normal operation and the power is turned off or a power failure occurs, the main microcomputer 20 recognizes the backup power from the backup circuit 50 (step 114). In this case, the main microcomputer ( 20 opens the backup port BU (step 115).

Submicrocoms 22 and 30 perform a backup function because the sub-microcoms 22 and 30 apply a low signal to the backup port by the pull-down resistors 51 and 52 as the backup port of the main microcomputer 20 opens. (Step 116). However, when the power failure does not occur, the backup port BU of the main microcomputer 20 maintains a high state to perform a normal function (steps 117 and 118).

In this backup mode, if the composite audio / video system performs a normal function and the main power is turned off, all operations are stopped. Otherwise, the program returns from step 119 to step 103 in order to perform another function. The above operation is repeated.

The present invention operating as described above has a feature of requiring only one backup circuit because the main microcomputer and sub-microcom are controlled by interfacing with the main microcomputer and the sub-microcom in the composite audio / video system.

Claims (1)

A color television having a video tape recorder capable of reproducing signals recorded on a video tape, a television broadcasting or a monitor capable of displaying the video signal, and a compact disc player installed on the upper side of the color television to reproduce a compact disc. And a neck unit installed between the videotape recorder and the color television, the neck unit configured to move the color television in left, right, up, and down directions: a key from a remote control or a key matrix. A main micom for receiving this signal and outputting a data signal for controlling a video tape recorder, a television broadcast, a compact disc player and a neck portion; A VTR microcomputer that receives a data signal of the video tape recorder from the main microphone and controls a video tape recorder deck; A CD microcomputer for receiving a data signal relating to the compact disc reproduction from the main microcom to play the compact disc; A backup circuit generating a backup power supply in case of power failure and providing the backup microcomputer to the main microcomputer, and a backup unit including a pull-down resistor for supplying the backup signal generated by the main microcomputer to the VTR and the CD microcomputer when the backup circuit is operated. Control of a composite audio / video system, characterized by