KR0170946B1 - Apparatus and method for contact controlling of computer and video cassette recorder - Google Patents

Abstract

According to the present invention, a first key input unit 210 and a key from the first key input unit 210 are provided with a plurality of keys for controlling the operation of a computer and a video cassette recorder. A computer having a microprocessor 220 for outputting the contracted code data corresponding to the signal in parallel and controlling the operation of the computer, and a plurality of keys for controlling the operation of the video cassette recorder. A second key input unit 110 for outputting a key signal, and a microcomputer 120 for controlling an operation of a video cassette recorder corresponding to the key signal from the second key input unit 110 and the contracted code data. A device for connecting a video cassette recorder, which converts parallel code data from the microprocessor (220) into serial code data in an asynchronous manner. A first transmitting and receiving unit 230 converts the serial code data of which is transmitted and received through a second transmission line through the transmission line in parallel with the code data to be applied to the microprocessor 220, and; The serial code data received through the first transmission line is converted into parallel code data and applied to the microcomputer 120, and the parallel code data from the microcomputer 120 is converted into serial code data in an asynchronous manner. A second transmitter / receiver 170 is transmitted through a second transmission line to control the operation of the video cassette recorder in the computer.

Description

Device and method for controlling connection between computer and video cassette recorder

1 is a block diagram of a connection control device of a computer and a video cassette recorder according to the present invention.

2 is a flowchart showing a control method of the computer in the connection control method of the computer and the video cassette recorder according to the present invention.

3 is a flowchart illustrating a method of controlling a video cassette recorder in a method of controlling a connection between a computer and a video cassette recorder according to the present invention.

* Explanation of symbols for main parts of the drawings

100: video cassette recorder 110,210: key input unit

120: microcomputer 130: deck

140: tuner unit 150: image processing unit

160: voice processing unit 170,230: transceiver

200: computer 220: microprocessor

240: TV reception and overlay processing unit

The present invention relates to an apparatus for connecting and controlling a computer and a video cassette recorder, and more particularly, to a computer capable of directly controlling the operation of a video cassette recorder (VCR) in a personal computer (PC). And a connection control apparatus and method for a video cassette recorder.

In general, the most basic part of multimedia is the convergence of computers and home appliances, which is the digitization of information, that is, the fusion of digitalized information. Computers are excellent at editing and storing processing, while at the same time weak at processing sound and information.

In contrast, home appliances such as televisions, audio equipment, and VCRs are strong in processing audio and video information, but weak in editing and storing processing. Taking advantage of these computer and home appliances and complementing each other's shortcomings will be the main form of multimedia.

Meanwhile, the TV reception and overlay board is a PC expansion board which can be inserted into the expansion slot of the PC and used in the direction of the multimedia as described above.

The above TV reception and overlay board is a TV tuner board with a built-in TV tuner that allows you to watch VHF / UHF / CATV broadcasts and VCRs on a monitor, and allows you to work on your computer while watching TV / CATV / VCR. The overlay board is supported.

In addition, there is a Grab function that allows you to save still images of the desired scene as graphic files in various formats, as well as to change the screen to an arbitrary size or to move it to any position, such as mosaic and multi-screen. Various special effects can be exhibited.

However, when watching the video and audio of the VCR by using the above-described TV reception and overlay board, the operation of the VCR cannot be controlled by the mouse or keyboard of the PC, and the desired operation by the VCR (for example, Rewind, fast forward, playback) to perform the operation and to perform a separate PC operation again inconvenient problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide an apparatus for controlling a connection between a PC and a VCR to enable the PC to control the operation of the VCR.

Another object of the present invention is to provide a connection control method of a PC and a VCR, which enables the PC to control the VCR in a connection control device of the PC and the VCR.

Another object of the present invention is to provide a connection control method between a PC and a VCR in which a drive is controlled by the control of the PC in the connection control device between the PC and the VCR.

An apparatus for controlling a connection between a PC and a VCR according to the present invention includes a first key input section and a first key input section for outputting a key signal resulting from a user's key operation by providing a plurality of keys for controlling the operation of the PC and the VCR. Key signal resulting from the user's key operation is provided with a PC having a microprocessor for outputting the contracted code data corresponding to the key signal in parallel and controlling the equalization of the PC, and a plurality of keys for controlling the operation of the VCR. A device for connecting a VCR having a second key input section for outputting a signal and a microcomputer for controlling the operation of a VCR corresponding to the contracted code data and a key signal from the second key input section, the apparatus comprising: Converts the code data into serial code data and transmits it via the first transmission line in an asynchronous manner, and receives the serial code data received through the second transmission line. Converting the other in parallel, the code data to the first transmitter-receiver unit to be applied to the microprocessor; The serial code data received through the first transmission line is converted into parallel code data and applied to the microcomputer, and the parallel code data from the microcomputer is converted into serial code data and asynchronously transmitted through the second transmission line. It includes a second transceiver for transmitting

The present invention also provides a method for driving a PC connected to a VCR having a key input unit, comprising: determining whether predetermined data has been received from the VCR; Transmitting data requesting retransmission when an error occurs in data received from the VCR; If the error is not generated after storing the data received from the VCR, determining whether the received data is a data requesting retransmission due to an error of the transmitted data and retransmitting the data if the request is retransmission. ; Determining whether a predetermined key signal is applied, if the key signal is a signal for mode setting, transmitting data requesting transmission of data necessary for mode setting, and setting a flag indicating completion of transmission; If the key signal is a signal for mode change, transmitting data on mode change and setting a flag indicating completion of transmission; If the key signal is a signal indicating completion of mode setting, transmitting data indicating completion of mode setting and setting a flag indicating completion of transmission; If the key signal is not a signal for notifying the mode setting, the mode change and the end of the mode setting, transmitting data instructing the operation of the VCR, and setting a flag indicating completion of the transmission.

The present invention also provides a method of driving a VCR connected to a PC, comprising: determining whether data transmission from the PC is completed; Decoding the received data when the transmission of the data from the PC is completed and transmitting a corresponding data to the PC and setting a flag indicating completion of transmission if the data is requested to transmit predetermined data; If it is information data relating to setting the received mode, detecting an error occurrence of the received data, if an error has occurred, transmitting data requesting retransmission to the PC and setting a flag indicating completion of the transmission; ; If the received data is information data related to setting a mode and no error of the received data has occurred, storing the received data; If the received data is not information data for data transmission and mode setting, determining whether the received data is data from the key input unit, converting the received data into data corresponding to the key input unit, and storing the data corresponding to the key input unit; Determining whether previously received data is different, reading out the stored data in different cases to control the operation of the VCR in response to the data, and setting a flag indicating that reception has been completed.

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

1 is a block diagram showing a connection relationship between a PC and a VCR in order to explain a preferred embodiment of the present invention. The figure shows a key input unit 110 of the VCR 100. The microcomputer 120, the deck unit 130, the tuner unit 140. The image processor 150, the voice processor 160, the transceiver 170, the key input unit 210 of the PC 200, the microprocessor 220, the transceiver 230, the TV receiver and the overlay processor 240. It includes.

Referring to the configuration of the VCR 100 first, the key input unit 110 is provided with a plurality of keys to perform and control the operation of the VCR 100, the key signal resulting from the user's key operation Output

In addition, the transmission / reception unit 170 converts serial code data transmitted from the transmission / reception unit 230 of the PC 200 to be described later into parallel code data and applies it to the microcomputer 120, while the parallel code data of the microcomputer 120 is used. Is converted into serial code data and applied to the PC 200. The transceiver 170 uses a universal asynchronous receiver-transmitter (UART) that conforms to the RS-232C communication interface standard.

On the other hand, the microcomputer 120 outputs a control signal for controlling the operation of the contracted VCR 100 in response to the key signal from the key input unit 110 and the parallel code data from the transceiver unit 170.

The deck unit 130 is driven in the recording and playback mode under the control of the microcomputer 120 to record the video and audio signals of the tuner 140 on the video tape (recording mode), or the video recorded on the magnetic tape. And read out (playback mode) the audio signal.

In addition, the tuner 140 receives and outputs a TV broadcast signal of a predetermined channel selected under the control of the microcomputer 120, and the image processor 150 receives an image from the deck 130 or the tuner 140. Amplify and output the signal

Finally, the voice processing unit 160 amplifies and outputs an audio signal from the deck unit 130 or the tuner unit 140.

The configuration of the PC 200 connected to the VCR 100 having the above-described configuration will be described. The key input unit 210 is provided with a plurality of keys to control the operation of the PC 200, which is caused by the user's key operation. Outputs a key signal, usually a keyboard and mouse are used.

The microprocessor 220 outputs a control signal for controlling the operation of the PC 200 corresponding to the key signal from the key input unit 210 and contracted code data for controlling the VCR operation.

In addition, the transceiver 230 converts the parallel code data applied from the microprocessor 220 into serial code data and transmits the same through the transmission line in an asynchronous manner, and the parallel code data applied from the transmitter / receiver 170 described above. Will be converted to serial code data and output. The transceiver 230 uses an RS-232C communication interface.

Meanwhile, the TV receiving and overlay processor 240 displays and outputs a TV broadcast signal of a predetermined channel or a video and audio signal input from the VCR 100 selectively received under the control of the microprocessor 220 on a monitor and a speaker. The signal is processed and output as possible. The input video information is edited and stored and stored in a file in a storage unit (not shown).

The connection and control process of the PC and the VCR in the connection and control device of the PC and the VCR according to the present invention configured as described above will be described first.

First, when the PC 200 is switched to the VCR 100 viewing mode, the key receiving unit 210 is matched with the operation of the VCR 100 in the TV receiving and overlay processing unit 240 based on the control signal of the microprocessor 220. The corresponding key of) is displayed on the monitor.

At this time, the user inputs a command for causing the VCR 100 to perform a desired operation (for example, play, fast forward, and rewind) by pressing a corresponding key of the key input unit 210 while looking at the monitor.

Next, the microprocessor 220 interprets the input key signal, converts the key signal into a predetermined code corresponding to the operation of the VCR 100, and applies the same to the transceiver 230 in parallel.

Then, the transceiver 230 converts the code data from the microprocessor 220 into serial code data through a transmission line and transmits the converted code data.

On the other hand, the transmission and reception unit 170 of the VCR 100 converts serial code data received through a transmission line into parallel code data and applies it to the microcomputer 120, thereby allowing the microcomputer 120 to enter a VCR (a mode according to a user's selection). 100).

Meanwhile, as shown in the figure, the image and audio signals output from the deck unit 130 or the tuner unit 140 of the VCR 100 are removed and amplified by the image processor 150 and the audio processor 160, respectively. Is processed and transmitted to the TV reception and overlay processing unit 240 of the PC 200 through a transmission line, and processed by the TV reception and overlay processing unit 240 as a displayable signal on the monitor, and then output to the monitor and the speaker. Video and audio from the VCR 100 can be viewed

Therefore, as described above, the operation of the VCR 100 can be conveniently and directly controlled by a keyboard or a mouse which is the key input unit 210 of the PC 200.

But. The above description is a general driving control method for controlling the driving (for example, playing, recording, stopping, etc.) of the VCR 100 using the PC 200, and controlling the VCR 100 using the PC 200. To this end, in addition to such driving data, data for providing information (eg, current time, etc.) necessary for driving the VCR 100, and the PC 200 may determine the state of the VCR 100 (for example, information on preset recording). A command or the like requesting data necessary for grasping should be applied to the VCR 100 from the PC 200.

In addition, the microcomputer 120 in the VCR 100 needs a program that responds to commands and data applied from the PC 200.

2 shows a flow chart of a program for the microprocessor 220 in the PC 200 to transmit commands and data by the user's key operation to the VCR 100 according to the needs described above.

As shown in the drawing, the microprocessor 220 determines whether a signal indicating that the transmission of the predetermined data is completed is received from the microcomputer 120 described above in step 21, and when a signal indicating that the reception is completed is input, step 22 Proceed to In step 22, the microprocessor 220 examines the received data using a parity bit or the like to determine whether an error has occurred and proceeds to step 23 when an error occurs. The microprocessor 220 proceeds to step 23 by allowing the microcomputer 120 to retransmit the transmitted data by applying a request data request for retransmission of the data transmitted through the transceiver 230.

But. If the microprocessor 220 does not generate an error in the received data as a result of the determination of step 22, the microprocessor 220 stores the received data in the internal RAM.

After performing step 24, the microprocessor 220 generates an error that the data transmitted from the VCR 100 has an error in the data previously transmitted by the microprocessor 220 in step 25. If it is determined that the data is error occurrence data, the process proceeds to step 26, but if not the error occurrence information, the process proceeds to step 27. In step 26, the microprocessor 210 may transmit the correct data to the VCR 100 by retransmitting the transmitted data to the VCR 100.

In operation 27, the microprocessor 220 determines whether a predetermined key signal is input from the key input unit 210. If the key signal is input, the microprocessor 220 proceeds to step 28. In step 28, the microprocessor 220 determines whether the input key signal is a key signal for setting a predetermined mode, i.e., reserved recording, and proceeds to step 30 if it is not a key signal for setting the mode. If it is a key signal for setting the mode, the flow advances to step 29. In step 29, the microprocessor 210 transmits the request data having the content of requesting transmission of data (scheduled reserved data and data required for reserved recording in the case of reserved recording) to set the mode. ) Is applied.

However, as a result of the determination in step 28, when it is not a key signal for mode setting, the microprocessor 210 determines whether the key signal input in step 30 is a key signal for changing the set mode contents, In the case of the key signal for changing the mode contents, data for mode change is transmitted to the VCR 100 in step 31.

However, as a result of the determination in step 30, when it is not a key signal for changing the mode contents, the microprocessor 210 determines whether it is a key signal for completing the setting of the mode by the above-described process in step 32. In other words, if it is a key signal for completing the mode setting, the VCR 100 transmits data instructing completion of the mode setting.

However, if the determination result of the steps 28, 30, 32 is not a key signal for mode setting, mode change, and mode setting completion, the input key signal will be a command for controlling the operation of the VCR 100, and thus, step 34 The microprocessor 220 applies the driving control data corresponding to the input key signal to the VCR 100.

Then, the microprocessor 210 sets a flag indicating the completion of the transmission in the data transmitted by the above-described process and ends all processes.

As can be seen from the above description, the microprocessor 210 of the present invention stores data corresponding to the key signal input from the key input unit 210 (mode setting, mode change, mode setting end, and general VCR driving command). While transmitting to the VCR 100, the correct transmission of the data transmitted from the data applied from the microcomputer 120 of the VCR 100 is judged. When an error occurs, the microcomputer 120 retransmits the transmitted data. It is to determine whether the error of the data applied from the.

3 shows a flow chart of the microcomputer 120 in the VCR 100 for communication with the microprocessor 210 performing the above-described operation.

As shown, the microcomputer 120 determines whether the transmission of all data from the microprocessor 220 is completed in step 31, and if so, proceeds to step 32 to decode the received data. And. If the microcomputer 120 determines that the decoded data is the request data requesting the transmission of the predetermined information, the microcomputer 120 proceeds to step 34 to transmit the information to the PC 200 and sets the transmission completion flag. (Step 45).

However, if the received data is not the request data in step 33, the microcomputer 120 proceeds to step 35 and determines whether it is information data necessary for mode setting or the like, and proceeds to step 36 if it is information data. In step 36, the microcomputer 120 determines whether an error has occurred in the received data. If no error occurs, the microcomputer 120 stores the received data (step 37), but if an error occurs, a flag indicating that an error has occurred in the received data. After setting (step 38), data indicating that an error has occurred is transmitted to the PC 200 (step 39), and the process proceeds to step 45.

However, as a result of the determination of step 35, if the received data is not information data, the microcomputer 120 proceeds to step 41 if the data input in step 40 is data by the key signal of the PC 200. If not, proceed to step 42. That is, when the input data is data by the key signal of the PC 200, the microcomputer 120 changes the data input in step 41 into data by the key input unit 110, If it is not data by the key signal, it is the data by the key input unit 110, and the flow advances to step 42 to store this data in the internal buffer.

If the microcomputer 120 determines whether the data stored in the buffer is the same as the data previously input in step 43, and if it is not the same, the microcomputer 120 reads the data of the buffer and controls the VCR 100 to handle the operation. The process proceeds to step 45.

That is, if the data applied from the microprocessor 220 is the request data, the microcomputer 120 transmits the data to the microprocessor 220, stores the data if the data is information data, and if the data is commanded to drive, the data. Correspondingly, the driving of the VCR 100 is controlled and a flag indicating that data reception is completed in step 46 is set.

As described above, the present invention has an effect of conveniently controlling the operation of the VCR directly from the PC when watching the video and audio of the VCR from the PC.

Claims (5)

Corresponding to the first key input unit 210 and the key signal from the first key input unit 210 to output a key signal resulting from a user's key operation by providing a plurality of keys for operation control of a computer and a video cassette recorder. A computer having a microprocessor 220 for outputting the code data in parallel and controlling the operation of the computer, and a plurality of keys for controlling the operation of the video cassette recorder. A video cassette example including a second key input unit 110 for outputting a signal and a microcomputer 120 for controlling the operation of a video cassette recorder corresponding to the key signal and the contracted code data from the second key input unit 110. A device for connecting a coder, the first code being asynchronously converted by converting parallel code data from the microprocessor 220 into serial code data. A first transmission / reception unit (230) for transmitting through a line and converting serial code data received through a second transmission line into parallel code data and applying the same to the microprocessor (220); The serial code data received through the first transmission line is converted into parallel code data and applied to the microcomputer 120, and the parallel code data from the microcomputer 120 is converted into serial code data in an asynchronous manner. And a second transmitting and receiving unit (170) transmitting through a second transmission line to control the operation of the video cassette recorder in the computer. The apparatus of claim 1, wherein the first transceiver is an RS-232C communication interface. The apparatus of claim 2, wherein the second transceiver 170 is a universal asynchronous receiver-transmitter (UART) corresponding to an RS-232C communication interface. A method of driving a computer connected to a video cassette recorder having a key input unit (110), comprising: determining (21) whether predetermined data has been received from the video cassette recorder; If an error occurs in the data received from the video cassette recorder, transmitting data requesting retransmission (22, 23); If an error has not occurred after storing the data received from the video cassette recorder, it is determined whether the received data is data that requires retransmission due to an error of the transmitted data, and if the data is requested for retransmission, the data is retransmitted. Steps 25 and 26; Determining whether a predetermined key signal is applied; if the key signal is a signal for mode setting, transmitting data requesting transmission of data necessary for mode setting, and setting a flag indicating completion of transmission (27); 28,35); If the key signal is a signal for mode change, transmitting data on mode change and setting a flag indicating completion of transmission (30, 31, 35); If the key signal is a signal indicating completion of mode setting, transmitting data indicating completion of mode setting and setting a flag indicating completion of transmission (32, 33, 35); And if the key signal is not a signal for mode setting, mode change, or end of mode setting, transmitting data instructing the operation of the VCR, and setting a flag indicating completion of transmission (34, 35). And video cassette recorder connection control method. CLAIMS 1. A method of driving a video cassette recorder connected to a computer, comprising: determining (31) whether data transfer from the computer has been completed; Decoding the received data when the transmission of the data from the computer is completed, and if the data is to be transmitted to the predetermined data to transmit the data to the computer and jetting a flag indicating that the transmission is completed (32, 33, 34, 45); If it is information data relating to setting the received mode, detecting an error occurrence of the received data, and if an error has occurred, transmitting data requesting retransmission to the computer and setting a flag indicating completion of the transmission ( 35,36,37); Storing (37) the received data if the received data is information data related to setting a mode and no error of the received data has occurred; If the received data is not information data for data transmission and mode setting, it is determined whether the received data is the data from the key input unit 110 and converted into data corresponding to the key input unit 110 and stored. Steps 40, 41 and 42; Determining whether the stored data is different from previously received data, reading out the stored data in different cases, controlling driving of the video cassette recorder corresponding to the data, and setting a flag indicating that reception is complete (43, 44) And 46) a connection control method between a computer and a video cassette recorder.