KR0159410B1 - Method for playing special selection of video tape using computer connected thereto - Google Patents

Abstract

The present invention relates to a method for searching for and playing a specific program section of a video tape in a system having a video cassette recorder and a computer, the method comprising: detecting a control signal from the video tape driven by the video cassette recorder; Stopping driving of the video tape each time a control signal is detected from the video tape to compare a control code detected from the video tape with a search code selected from a database of the computer; And reproducing the videotape from the section from which the detected control signal is extracted when the selected search code matches the control signal detected from the videotape.

Therefore, it is possible to easily search for a specific section of the video tape to be watched and play among the plurality of video tapes indexed for each section.

Description

Section playback method in video cassette recorder using computer

1 is a hardware block diagram for explaining the present invention.

2 is a flowchart showing a section reproducing process in a video cassette recorder using a computer according to the present invention.

* Explanation of symbols for main parts of the drawings

100: computer 110: key input unit

120: microprocessor 130: transceiver

140: TV reception and overlay processing unit

200: video cassette recorder 210: key input unit

220: microcomputer 230: deck

233: search code processor 240: image processor

250: voice processing unit 260: transceiver

The present invention relates to a method of playing a section in a video cassette recorder (hereinafter referred to as a VCR), and in particular, to a video tape using a data base of a PC in a VCR connected to a personal computer (hereinafter referred to as a PC). A section playback method in a VCR using a personal computer capable of searching for and playing a specific section.

In general, when configuring an encyclopedia, tour guide, or educational program using a videotape, a user selects a videotape that he / she wants to watch using a separate index booklet, and searches a section of the videotape that he / she wants to watch. After that, there was an uncomfortable problem of watching the desired program.

On the other hand, in response to the recent arrival of multimedia media, VCRs and PCs are connected to display video signals played on VCRs on a monitor of a PC, and video from a VCR is converted into a digital signal using an overlay board, which is a PC expansion board. A system that can be processed and edited has emerged.

As described above, the inventor of the present invention configures the above-described index booklet on a PC connected to a VCR as a database program of a PC, thereby providing a faster search to a user so that the user can conveniently watch a desired program. I sought.

Accordingly, it is an object of the present invention to provide a method of playing a section in a video cassette recorder using a computer which makes it easier to search and view a program section to be watched on a videotape using a database in a PC connected to a VCR.

In a video cassette recorder using a computer according to the present invention, a method of reproducing a specific program section of a videotape is performed by retrieving a search code corresponding to the specific program section of a database to search for and reproduce a specific program section of the videotape. Selecting from; Providing the selected search code to the video cassette recorder; Detecting a control signal from the video tape driven by the video cassette recorder; Stopping driving of the video tape whenever a control signal is detected from the video tape; Comparing the selected search code with a control signal detected from the video tape; And reproducing the videotape from the section from which the detected control signal is extracted when the selected search code matches the control signal detected from the videotape.

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

1 is a hardware block diagram for explaining the present invention, the PC 100 includes a key input unit 110, a microprocessor 120, a transceiver 130, a TV receiving and overlay processing unit 140, The VCR 200 includes a key input unit 210, a microcomputer 220, a deck unit 230, a search code processor 235, an image processor 240, an audio processor 250, and a transceiver 260. A television 300.

In the PC 100, the key input unit 110 is an input means for controlling the operation of the PC 100. The key input unit 110 includes a plurality of keys including an interval playback key and the like to provide a key signal corresponding to a user's key operation. Output, usually a keyboard and mouse.

The microprocessor 120 assigns one identification number to each video tape driven in the VCR 200, and assigns a corresponding search code to each program section recorded on the video tape, and then inserts a corresponding search code into the memory shown therein. It is stored as a database. The microprocessor 120 selectively outputs the tape identification number and the search code stored in the database according to the key signal from the key input unit 110.

The transceiver 130 converts the search code data from the microprocessor 120 into serial code data and transmits the data through the transmission line in an asynchronous manner, and receives the serial data from the transceiver 260 of the VCR 200. The data is converted into parallel data and applied to the microprocessor 120, and RS-232C communication interface is used.

The TV reception and overlay processing unit 140 converts a TV broadcast signal of a predetermined channel or a video and audio signal input from the VCR 200 into a signal that can be displayed and output to a monitor and a speaker, which are selectively received under the control of the microprocessor 120. For processing, A / D conversion, buffering, digital signal processing, and D / A conversion are output.

On the other hand, in the VCR 200, the key input unit 210 is provided with a plurality of keys for controlling the operation of the VCR 200, and outputs a key signal corresponding to the user's key operation.

The deck unit 230 records the applied video and audio signals to the video tape or reads the video and audio signals recorded on the video tape while driving the video tape at a speed corresponding to the mode under the control of the microcomputer 220. To print.

In the present invention, in each video tape driven by the deck unit 230, different control signals representing respective program sections recorded on the tape are recorded in the control track. Each such control signal corresponds to a respective search code stored in the database of the microprocessor 120 of the PC 100 as a code that changes the duty cycle used for accurate track scanning of the videotape.

The search code processor 235 converts the control signal of which the duty cycle read from the deck unit 230 is changed into a digital signal and applies it to the microcomputer 220.

The microcomputer 220 outputs a control signal for controlling the operation of the contracted VCR in response to the key signal from the key input unit 210 and the parallel code data from the transceiver unit 260. While the search code is applied together with the interval reproduction key input from the PC 100, the microcomputer 220 controls the deck unit 230 to drive the video tape and the control signal read from the search code processor 235 and the PC 100. Compares the provided search code from and retrieves a program section in the videotape corresponding to the search code.

The image processor 240 removes and amplifies and outputs an image signal that is read and applied from the deck unit 230, and the audio processor 250 removes and removes an audio signal that is read and applied from the deck unit 230. Amplify and output.

Meanwhile, the transceiver 260 converts the serial code data transmitted from the transceiver 130 of the PC into parallel code data using a universal asynchronous receiver-transmitter that conforms to the RS-232C communication interface standard. To the microcomputer 220 described above.

Next, the section playback process of the VCR using a PC according to a preferred embodiment of the present invention will be described in detail with reference to the flowchart of FIG.

First, when a user presses a section play key of the key input unit 110 of the PC 100 to watch desired sections of the video tape, the microprocessor 120 senses a section play key signal applied from the key input unit 110. .

Next, when the interval playback key signal is detected in the step 200, the microprocessor 120 and the video tape number in the database to easily select the search code data of the video tape stored in the memory (not shown) A search code corresponding to each program section of each video tape is displayed.

Then, when the user selects from the displayed contents the search code corresponding to the video tape number and the video tape section in which the desired program is recorded, the microprocessor 120 determines the section playback command data and the user's promised section playback command data. The selected search code is applied to the transceiver 130 (steps 200 and 202).

Then, the transceiver 130 converts the serial code data of a format set between the PC 100 and the VCR 200 and transmits the serial code data to the transceiver 260 of the VCR 200.

Next, the transceiver 260 of the VCR 200 converts the received serial code data of a predetermined format into parallel code data and applies it to the microcomputer 220.

Then, the microcomputer 220 analyzes the parallel code data applied from the transceiver 260 and performs a corresponding operation. In this case, since it is an interval reproducing command, the deck unit 230 is controlled to first determine whether the video tape is loaded (step 204).

At this time, if the video tape is not loaded, when viewing on the television 300 to display a message to load the video tape, the character processing using the OSD (On Screen Display) to output the image processing unit 240, PC When viewing using the display unit 100, the display data is output to the transceiver unit 260, and the corresponding message, that is, the video tape, is controlled by the microprocessor 120 that receives the display data from the transceiver 130. Causes the monitor to output a message to load (step 206).

Next, when the video tape is loaded by the user and the loading of the video tape is confirmed in step 204, the microcomputer 220 controls the deck unit 230 to rewind the video tape (step 208).

Next, the microcomputer 220 detects a control signal whose duty cycle is changed by the search code processor 235, and when the control signal is detected (step 210), the microcomputer 220 controls the deck unit 230 to stop the video tape that was running. (Step 212).

Then, the code value of the control signal detected from the videotape is compared with the search code provided from the PC 100 (step 214).

At this time, if the code value of the control signal and the search code provided from the PC 100 are the same, it is determined that the program section desired by the user has been searched, and the deck unit 230 is used to play the video tape from the point of time when the control signal is detected. Control is then made to enter the playback mode while driving the video tape at the standard playback speed (step 226).

However, if the code value of the control signal and the search code provided from the PC 100 are not the same, the flow advances to step 216 to determine whether the detected control signal is greater than the search code. At this time, if the detected control signal is larger than the search code, the video tape is rewound (step 218), and it is again determined whether there is a control signal detected from the search code processor 235 (step 222).

At this time, if there is a control signal detected, the process returns to step 212 to stop the videotape and repeat the process of comparing the detected control signal with the search code.

On the other hand, if the control signal detected from the video tape in step 216 is smaller than the search code, the video tape is fast-wound (step 220), and it is determined whether there is a control signal newly detected from the search code processor 235 ( Step 224). At this time, if a control signal is detected from the video tape, the process returns to step 212 described above and repeats the above-described process.

Therefore, the deck unit 230 starts playback from the section recorded on the video tape that the user wants to watch, and outputs the video and audio signals processed as signals that can be displayed and output by the video and audio processing units 240 and 250.

Video and audio signals applied from the image processing unit 240 and the audio processing unit 250 of the VCR 200 are A / D converted by the TV receiving and overlay processing unit 140 of the PC 100, and then processed again. By D / A conversion and output to the monitor and the speaker, the user can watch the video signal reproduced by the VCR 200 through the monitor of the PC.

On the other hand, when the television 300 is used, the user may watch the video and audio signals from the VCR 200 through the television 300.

As described above, according to the present invention, it is possible to quickly and conveniently search for a specific section of a video tape to be watched among a plurality of video tapes indexed for each section, so that a user can easily play a program to be watched.

Claims (3)

The video tape in a system having a video cassette recorder driving at least one video tape on which different control signals indicative of each program interval are recorded and a computer storing a search code corresponding to each of the control signals. A method of searching for and playing back a specific program section of the computer, the method comprising: selecting a search code corresponding to the specific program section from a database of the computer to search for and play back a specific program section of the video tape; Providing the selected search code to the video cassette recorder; Detecting a control signal from the video tape driven by the video cassette recorder; Stopping driving of the video tape whenever a control signal is detected from the video tape; Comparing the selected search code with a control signal detected from the video tape; And reproducing the videotape from the section from which the detected control signal was extracted when the selected search code and the control signal detected from the videotape match. The method of claim 1, wherein in the comparing step, when the control signal detected from the video tape is greater than the search code, the video tape is rewinded, and when the detected control signal is smaller than the search code, Fast forwarding the video tape (Fast Forward). A segment playback method in a video cassette recorder using a computer. The method of claim 1, wherein the control signal is a signal encoded by changing a duty cycle used for accurate track scanning of the videotape.