KR100210771B1 - Televideo having over-use preventive function of cleaner-tape - Google Patents

Abstract

According to the present invention, when the cleaner tape is driven in a state in which the head usage time does not reach the reference time from the time when the cleaner tape is recently used, the cleaner which can output the OSD warning message according to the overuse of the cleaner tape on the CRT screen. The present invention relates to a tele video having a function of preventing overuse of a tape. The present invention relates to a television function for performing a playback processing operation on a broadcast signal transmitted from a broadcasting station, and a video tape (T) driven by a tape driving mechanism (44). In a tele video capable of scheduled recording / playback, in which a video tape recorder function for recording / playback is performed, a control signal input unit 10 for setting a video mode and setting a playback mode and a stop mode. And a synchronization signal included in a video signal read out from the video tape T and reproduced in the video mode. If the synchronization signal detection unit 50 for detecting a call and the synchronization signal are not detected from the synchronization signal detection unit 50 while the video tape T is reproduced, the video tape T is determined as a cleaner tape and the signal is determined. If the operation time t1 of the audio / video head installed in the recording / reading means 46 does not reach the reference time t set for use of the cleaner tape, the cleaner tape is stopped while the cleaner tape stops running. A control unit 12 controlling to output an OSD warning message according to an overuse, a time memory 14 storing time data of an operation time t1 of the audio / video head under the control of the control unit 12, and Under the control of the control unit 12 generates an OSD text signal for the OSD warning message according to the excessive use of the cleaner tape, the OSD warning message according to the excessive use of the cleaner tape on the CRT Including an OSD processing unit 16 to output, characterized in that configured.

Description

Tele-Video with Overuse of Cleaner Tape

The present invention relates to a tele video having a function of preventing overuse of a cleaner tape. More particularly, the present invention relates to a tele video, which is installed outside a drum formed of a video tape recorder, to perform a function of reading a video / audio signal recorded on a video tape. In the case of using the cleaner tape to remove the foreign matter deposited on the video / audio head, if the cleaner tape is used excessively, the televideo with the overuse prevention function of the cleaner tape can output the OSD warning message accordingly. It is about.

Televisions for reproducing and outputting video signals and audio signals included in broadcast signals transmitted from a broadcasting station are signal-coupled to a video tape recorder (VCR) or a laser disc player (LDP) and reproduced on a video tape or a laser disc. It is also used as a video and audio output device for audio and audio signals. In the related art, a VCR, which is a playback device of a video signal and an audio signal, and a television coupled to the VCR are configured as independent entities, but recently have a complex function. It is a state to propose a televideo (TVCR) by combining a designed television and a VCR.

The tele video includes a series of devices for performing a VCR function, that is, a reel for driving a video tape mounted in a deck at a constant speed, and a video / audio signal recorded on the video tape, A plurality of audio / video heads for recording video / audio signals, the audio / video heads being externally installed so that the audio / video heads read the video / audio signals recorded on the video tape or the video / audio on the video tape. And a drum which rotates synchronously so that a signal can be recorded.

On the other hand, if a foreign material such as dust deposited on the tape surface of the video tape is deposited on the audio / video head while the audio / video head plays back the video tape, the video / audio signal is precise from the audio / video head. Since the noise component is included in the video / audio signal read out from the audio / video head, the image quality of the video signal reproduced and output through the CRT is degraded or the noise sound is output to the audio signal output through the speaker.

Therefore, when the image quality of the video signal output to the CRT is deteriorated or noise is included in the audio signal output through the speaker, the user mounts a cleaner tape into the deck to drive the cleaner tape to run the audio / video. The head is in contact with the cleaner tape to remove foreign matter that has accumulated on the audio / video head. In this case, if the user uses the cleaner tape excessively in anticipation of better image quality or sound quality, the audio / video head is more frequently than necessary. Contact with the cleaner tape is the main cause of damage to the audio / video head.

Accordingly, the present invention has been made in view of the above circumstances, and when the cleaner tape runs in a state in which the head use time has not reached the reference time since the use of the cleaner tape recently, the OSD warning due to the excessive use of the cleaner tape Its purpose is to provide televideo with over-use protection function of cleaner tape that can output message on CRT screen.

According to an embodiment of the present invention for realizing the above object, a television function for performing a playback processing operation for a broadcast signal transmitted from a broadcasting station and a recording / playback operation for a video tape driven by a tape driving mechanism are performed. In a televideo capable of scheduled recording / playback in which a videotape recorder function is performed, a control signal input unit for setting a video mode, a playback mode and a stop mode, and is read out of the video tape in a video mode. A sync signal detector for detecting a sync signal included in the reproduced video signal; if the sync signal is not detected from the sync signal detector during the playback of the video tape, the video tape is determined as a cleaner tape and the signal recording / reading is performed. The operating time of the audio / video head installed in the A controller which controls to output an OSD warning message according to an excessive use of the cleaner tape when the cleaner tape stops running when the reference time set for the use is not reached; and under the control of the controller, the audio / video head OSD memory message for overuse of cleaner tape on CRT by generating OSD text signal for OSD warning message under excessive use of cleaner tape under the control of the controller. Provided is a tele-video with an overuse protection function of the cleaner tape, including an OSD processing unit for outputting the signal.

According to the present invention having the above-described configuration, when the user has driven the cleaner tape into the deck again when the head usage time has not reached the reference time since the user recently used the cleaner tape, the cleaner tape is overused. An OSD warning message is displayed on the CRT screen to warn of head damage that may be caused by the user, allowing the user to avoid frequent use of the cleaner tape.

1 is a block diagram of a tele video having a function of preventing overuse of a cleaner tape according to an embodiment of the present invention;

2A and 2B are flowcharts illustrating the operation of a televideo having a function of preventing overuse of a cleaner tape according to an embodiment of the present invention;

3 is a diagram illustrating a screen display example according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: control signal input unit 12: control unit

14: time memory 16: OSD processing unit

18: tuner 20: voice IF module

22: video IF module 24: A / V switching unit

26: voice signal processor 28: voice amplifier

30: video signal processor 32: video amplifier

40: data storage section 42: display section

44: tape driving mechanism 46: signal recording reading unit

48: video / audio signal processor 50: sync signal detector

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

1 is a block diagram of a tele video to which the present invention is applied. In FIG. 10, reference numeral 10 denotes a control signal input unit for controlling the overall function of a corresponding tele video. Remote control is applied to the remote control of the video or a control panel defined on the front of the tele-video, the control signal input unit 10 in the present invention, the main power on / off button for setting the main power on / off function And a TV / VCR mode setting button for selectively switching and setting a TV / VCR mode, a series of buttons for controlling the television function, and a series of buttons for controlling the video function, for example, a playback key for setting the playback mode. And a stop key 10b for stopping the playback operation, a stop key STOP for stopping the reservation recording, and the like.

Reference numeral 12 is a control unit for controlling the overall function of the televideo corresponding to a plurality of button operations for setting the control function provided in the control signal input unit 10, in the present invention, the control unit 12 is a tape drive to be described later The use time of the audio / video head is calculated based on the drum pulse DP and the reel pulse RP output from the mechanism 44, and the time data according to the calculation time is stored in the time memory 14 to be described later. In this state, if the predetermined video / audio signal is not read from the video tape in the playback operation on the video tape input in the deck, the controller 12 judges the video tape as a cleaner tape, and then the time memory. If the time data stored in (14) is less than the reference time, a predetermined control signal is applied to the OSD processing unit 16 to output an OSD warning message according to excessive use of the cleaner tape on the CRT screen.

Reference numeral 14 denotes a time memory for storing predetermined time data according to the usage time of the audio / video head under the control of the controller 12, and 16 denotes an OSD warning message for overuse of the cleaner tape. When a predetermined control signal is applied from the control unit 12 while the character code is stored in advance, a predetermined OSD text signal is generated based on the character code, and the function control designated by the control signal input unit 10 is performed. An OSD processor which generates an OSD text signal for performing display of text information.

In FIG. 1, reference numeral 18 denotes a specific channel based on a preset voltage VT read and provided from the channel data storage unit 14 under control of the control unit 12 among a plurality of broadcast channels received through an antenna. It is a tuner for tuning.

Reference numeral 20 is an audio IF module for extracting and IF-converting the audio signal for the channel selected by the tuner 18, and 22 is an image for IF conversion by extracting the video signal for the channel selected by the tuner 18. An IF module, and 24 denotes an image / audio signal applied by the video / audio IF module 20 and 22 and an image / audio signal applied by the video / audio signal processor 48 to be described later from the controller 12. A path for recording a video / audio signal applied from the video / audio IF modules 22 and 20 on the video tape T by performing a predetermined switch operation based on the output mode switching signal SW. The A / V switching unit sets a path for reproducing and outputting the video / audio signal from the video / audio signal processor 40 to be described later through the CRT apparatus and the speaker SP.

Reference numeral 26 denotes a voice signal switched and output from the A / V switching unit 24 in a voice processing mode set by the control signal input unit 10, for example, volume control, voice surround or voice multiplexing. A voice signal processor for amplifying the voice signal output from the voice signal processor 26 and reproducing it through a speaker SP as a voice output device connected to a rear stage, and 30 denotes the control. An image signal processing unit for performing an image related processing function designated by the signal input unit 10, for example, adjusting luminance / contrast, or inserting an OSD text signal generated by the OSD processing unit 16 on the screen. An image amplifying unit which amplifies the image signal processed by the image signal processing unit 30 to be displayed on the CRT device.

In FIG. 1, reference numeral 40 denotes a data storage unit for storing, for example, a reservation channel for reservation recording, a recording start time / reservation end time, etc. set by the control signal input unit 10, and 42 denotes the controller ( 12 is a display unit which performs a fluorescent display, i.e., a status display including a playback mode and a playback time of the video tape T, under the control of 12).

Further, reference numeral 44 denotes a tape driving mechanism for driving the video tape T under the control of the control unit 12 based on a function set on the basis of a button operation configured in the control signal input unit 10. A mechanism 44 is provided with a reel motor (not shown) and a drum motor (not shown) for driving the video tape T to drive the video tape T by driving the reel motor and the drum motor. Here, when the reel and the drum are rotated by the power supplied as the reel motor and the drum motor are operated, the control unit controls the reel pulse and the drum pulse generated by the rotation of the reel and drum. (12).

Reference numeral 46 denotes a plurality of audio / video heads configured to read audio / video signals from the video tape T driven by the tape driving mechanism 44 or to output video and audio signals to the video tape T. A signal recording / reading unit for recording, and 48 denotes a path for performing reproduction processing for the audio signal and the video signal recorded on the video tape T read by the signal recording / reading unit 46; A video / audio signal processor having a path for processing video signals and audio signals to be recorded on the video tape T by the signal recording / reading section 46.

Reference numeral 50 denotes a synchronization signal included in the video signal output from the A / V switching unit 24 to determine the type of the video tape T to be played back, for example, a normal video tape or a cleaner tape. Is a synchronization signal detection unit that applies the synchronization detection signal to the control unit 12 according to the detection result.

The operation according to the television function in the televideo having the above-described configuration will be briefly described.

The controller 12 applies the tuning voltage VT corresponding to the tuning signal to the tuner 18 when the tuning signal for a specific channel is input after the power is turned on by the control signal input unit 10. Accordingly, the voice signal of the channel tuned by the tuner 18 is extracted from the voice IF module 20, IF converted, and then applied to the voice signal processor 26 through the A / V switching unit 24. The voice signal processing unit 22 processes the voice signal based on the volume control signal or the voice multiple control signal set through the control signal input unit 10 and applies the voice signal to the voice amplifier 28. The audio signal amplified by the amplifier 28 is applied to the speaker SP and is reproduced and output.

In addition, the video signal of the channel tuned by the tuner 18 is extracted from the video IF module 26 and IF converted, and then applied to the video signal processor 28 via the A / V switching unit 24. In addition, the image signal processing unit 28 performs RGB processing for reproducing the video signal, and performs insertion processing of the OSD text signal provided by the OSD processing unit 16 under the control of the control unit 12. The video signal is applied to the video amplifier 32, and the video signal amplified by the video amplifier 32 is output on the CRT apparatus.

Hereinafter, the operation of the televideo with the overuse prevention function of the cleaner tape according to an embodiment of the present invention will be described in detail with reference to the flowcharts shown in FIGS. 2A and 2B.

First, the user inserts the video tape T into the video tape storage unit, mounts the video tape T in the deck (step 70), and then uses the playback key 10a configured in the control signal input unit 10. If the playback mode is set (step 72), the controller 12 performs a playback operation on the video tape T (step 74).

That is, in step 74, the control unit 12 applies a predetermined control signal to the tape driving mechanism 44 and the signal recording / reading unit 46 to record the video / audio signal recorded on the video tape T. The video / audio signal read out by the audio / video head configured in the signal recording / reading section 46 is applied to the video / audio signal processing section 48 to be processed as a playable signal, and then A / V switching unit 24 is applied.

At the same time, the control unit 12 applies a predetermined switching signal SW to the A / V switching unit 24 so that the video / audio signal from the video / audio signal processing unit 48 is output to the audio signal processing unit ( 26) and the video signal processor 30, and the voice signal processor 26 performs a voice processing operation on the voice signal and then transfers the voice signal to the voice amplifier 28. The audio signal is amplified by the audio amplifier 28 to be reproduced and output through the speaker SP. At the same time, the video signal processor 30 performs an image processing operation on the video signal. The processed video signal is applied to the video amplifier 32 so that the video signal is amplified by the video amplifier 32 and reproduced through the CRT.

On the other hand, during the playback operation in step 74, the control unit 12 operates time of the audio / video head based on the drum pulse DP and the reel pulse RP applied from the tape driving mechanism 44. Next, the time data according to the calculated time is stored in the time memory 14.

Subsequently, the control unit 12 determines whether the synchronization signal is detected by the synchronization signal detection unit 50 (step 76). The video tape T mounted in the deck is a video tape in which video / audio signals are normally recorded. In this case, as the video signal including the synchronization signal is output from the A / V switching unit 24, the synchronization signal detection unit 50 detects the synchronization signal. In such a case, the controller 12 proceeds to step 74 in accordance with the determination result YES in step 76 to continuously perform the playback operation.

On the contrary, when the video tape T mounted in the deck is a cleaner tape, the sync signal is detected by the sync signal detector 50 because the video signal is not output from the A / V switching unit 24. It doesn't work. In this case, the controller 12 proceeds to step 78 according to the determination result NO in step 76, reads out time data t1 stored in the time memory 14, and then proceeds to step 80. It is determined whether the time data t1 read out from the time memory 14 reaches the preset time t.

As a result of the determination, if the time data t1 reaches the preset time t (YES in step 80), the audio / video head is driven while the cleaner tape is driven by performing a playback operation on the critter tape. After performing a head cleaning operation to remove foreign substances deposited on the audio / video tape in contact with, the time memory 14 is reset to initialize the time data t stored in the time memory 14. (Step 83).

On the contrary, if the time data t1 does not reach the preset time t (NO in step 80), the OSD processing unit (in the state in which the regeneration operation for the cleaner tape is stopped and the running of the cleaner tape is stopped) is performed. 16, an OSD text signal for an OSD warning message according to an excessive use of the cleaner tape generated by the OSD processor 16 is applied to the image signal processor 30 by applying a predetermined control signal. As such, other OSD warning messages for excessive use of the cleaner tape, such as' * cleaner tape frequently, can damage the head. To stop using the cleaner tape, press the stop key. * 'Is displayed on the CRT screen.

Subsequently, the control unit 12 determines whether the stop mode is set by the control signal input unit 10 (step 88). The control signal input unit 10 responds to the OSD warning message output on the CRT screen. When the stop mode is set by operating the stop key 10b configured in FIG. 2), the control unit 12 applies a predetermined control signal to the tape driving mechanism 44 to eject the cleaner tape (step 90).

However, if the stop mode is not set by the control signal input unit 10, the control unit 12 proceeds to step 82 according to the determination result NO in step 88 to perform a head cleaning operation.

That is, in the televideo with the overuse prevention function of the cleaner tape according to an embodiment of the present invention, the reference time for when the cleaning operation for the audio / video head should be performed is set to, for example, 100 hours. If the user runs the cleaner tape in the state that 100 hours is not reached, the OSD warning message according to the excessive use of the cleaner tape is output on the CRT screen to suppress the frequent use of the cleaner tape by the user. .

As described above, according to the televideo with the overuse prevention function of the cleaner tape according to an embodiment of the present invention, it is possible to suppress the frequent use of the cleaner tape by a user, and thus the audio / It is possible to prevent the video head from being damaged.

Claims (4)

A reservation in which a television function for performing a reproduction processing operation for a broadcast signal transmitted from a broadcasting station and a video tape recorder function for performing a recording / reproducing operation for a video tape T driven by the tape driving mechanism 44 are mixed. In televideo recording / playback, A control signal input unit 10 for setting a video mode and setting a play mode and a stop mode; A sync signal detector 50 for detecting a sync signal included in a video signal read out from the video tape T and reproduced in a video mode; If the synchronous signal is not detected from the synchronous signal detection unit 50 in the course of playing the video tape T, the video tape T is judged as a cleaner tape and audio / installed in the signal recording / reading means 46 is provided. If the operation time (t1) of the video head does not reach the reference time (t) set for use of the cleaner tape, the control unit outputs an OSD warning message according to the excessive use of the cleaner tape while the driving of the cleaner tape is stopped. Control unit 12, A time memory 14 for storing time data on an operation time t1 of the audio / video head under the control of the controller 12; Under the control of the control unit 12 includes an OSD processing unit 16 for generating an OSD text signal for the OSD warning message according to the excessive use of the cleaner tape, and outputs an OSD warning message for the excessive use of the cleaner tape on the CRT. Tele-video with over-use of the cleaner tape, characterized in that the configuration. The method of claim 1, wherein the control unit 12 calculates an operation time t1 of the audio / video head based on a drum pulse DP and a reel pulse RP applied from the tape driving mechanism 44. Tele-video with over-use prevention function of the cleaner tape, characterized in that. 2. The cleaner of claim 1, wherein the control unit 12 is configured to mount the cleaner when the stop mode is set by the control signal input unit 10 while outputting the OSD warning message according to the excessive use of the cleaner tape through the CRT. Televideo with overuse protection of the cleaner tape, characterized by ejecting the tape. The head cleaning apparatus of claim 1, wherein the controller 12 continuously runs the cleaner tape when the operation time t1 of the audio / video head reaches a reference time t set for use of the cleaner tape. And performing the operation, and then initializing the time memory (14) when the head cleaning operation is completed.