KR100879264B1 - The control method of protocol converter apparatus for format of hd vided signal and apparatus control - Google Patents

Abstract

The present invention relates to a protocol converter, and more particularly, to a method of controlling a protocol converter device for converting a format of an HD broadcast signal between a video cassette recorder (VCR) and a video disc recorder (VDR) and inter-device control.

To this end, the protocol converter device for HD broadcast editing signal conversion and device-to-device control analyzes signals transmitted from VCR to the converter using RS 422 communication port during 1: 1 editing. VCR) or send the appropriate command to the video server for control, and play the resources on the video server for automatic storage in VCR. A controller 10 designed to control a video server or VCR by analyzing a signal input by a user by using a keypad by matching a state value of a VCR with a state value of a video server;

Consists of a toggle key and other keys (STOP, PLAY, REC, STANDBY, CUE, EJECT, REV, FF, JOG, SHUTTLE, IN, etc.) to control the video server using the toggle key or VCR. Select whether to control the other key, and the other key can be used equally on the video server or VCR. For example, if you select VCR using the toggle key and press the play button, the other key, A keypad input unit 20 on which a VCR is played;

A storage unit 30 for storing a control command protocol and firmware of a video server or VCR, and state values of the video server and VCR;

A display unit 40 for outputting an operation state of a video server or VCR to a screen;

EIA RS-422 communication port (1START BIT, 8DATA BITS, 1 PARITY BIT (ODD), 1STOP BIT, 38.4kb / s) Serial data transmission unit for transmitting and receiving control command and status value between VCR and converter 50;

And a serial data transmission unit 51 for transmitting and receiving control commands and status values between the VDR and the converter by the EIA RS-422 communication port.

Video server, VDR, VCR, VPD, VDCP, RS422, PROTOCOL, CONVERTER, HD, serial data transmission, encoding.

Description

Control method of protocol converter for editing signal conversion and control between devices for H.D broadcaster {THE CONTROL METHOD OF PROTOCOL CONVERTER APPARATUS FOR FORMAT OF HD VIDED SIGNAL AND APPARATUS CONTROL}

1 is a schematic configuration diagram showing an overall configuration including a converter device according to the present invention.

2 is a schematic block diagram showing an internal configuration and a control signal of a converter device according to the present invention;

3 is a flow chart illustrating a protocol conversion and control procedure for encoding a resource with HD VCR into HD VDR.

4 is a flowchart illustrating a protocol conversion and control procedure for encoding a resource having HD VDR into HD VCR.

Fig. 5 is a road map showing a broadcasting signal conversion process of a converter device for encoding a resource in a VCR to a VDR.

Fig. 6 is a road map showing a broadcasting signal conversion process of a converter device for encoding a resource in a video server into a VCR.

The present invention encodes a source in a high definition video cassette recorder (HD VCR) to a high definition video disc recorder (HD VDR) or a video server, or a source in a video server or HD VDR (HD VCR) to a high definition video cassette recorder (HD VCR). ), And can control a high definition video disc recorder (HD VDR) or a video server through a high definition video cassette recorder (HD VCR) or a high definition video cassette recorder (HD VCR) through a video server. The present invention relates to a control method of a protocol converter device.

In general, VCR is used to record programs of wired / wireless television broadcasting or to play commercially recorded cassettes through a video device. VCR is used to record image or audio signals on a magnetic tape. There are a number of heads that can record to and read from, and have a fast forward and rewind control function and a timer function that can automatically record a video program. It also has the ability to record programs.

However, non-linear systems are used for high-definition video cassette recorders (HD VCRs) used for broadcasting and video editing through them, which is a process that is accompanied by the digitization of editing equipment due to the digitization of video equipment. .

However, non-linear (non-linear) systems used for broadcasting are large systems that work in conjunction with video servers or video disk recorders (VDRs), which are expensive to purchase and build storage devices, and analog signals. There is a problem that takes a lot of time through the digitizing operation.

In small broadcast channels that require urgent broadcast editing and transmission, the huge initial capital problem and delay in working time can cause serious problems that reduce work efficiency.

In addition, the conventional linear (linear) system easily navigates to a desired scene through random access, or does not record the location of the media file, the start timecode and the end timecode of the edit when editing, and restarts the editing operation from the beginning. The inconvenience of having to work, and the inconvenience of having to control the equipment individually with each equipment.

In addition, an online device and a video server are separately required for transmission through a network, but this is a problem that it is difficult to promptly transmit news through online due to different protocols.

As the cable TV and satellite broadcasting eras enter, the demand for the opening of small and personal Internet broadcasting stations is increasing, and VCR and VDR are used to effectively transmit edited broadcasts by real-time broadcasting and recording tapes. Independent control system is required, but existing broadcasting equipment is prepared as a complex of expensive equipment, so in case of small and small broadcasting station, it is practically impossible to purchase the whole broadcasting equipment for economic control. There is a need for a protocol converter device for converting broadcast edit signals and controlling devices.

In other words, conventional broadcast editing systems that record HD VCRs from a video server (HD server or HD VDR) and then edit them back to HD VCRs are VDCP and VCR, one of the video server universal protocols. ) Since the protocols used in the equipment are not compatible with each other, there is a problem that the data and the editing tape must be separately produced by editing with an expensive nonlinear editor.

The present invention has been made to solve the above problems, and absorbs the advantages of the non-linear system and the linear system for the conventional video editing and control equipment and video server or video disk recorder (VDR) and video By providing mutual control between cassette recorders (VCR) and providing compatibility with different heterogeneous protocols, it enables control between video server and HD VCR (VCR) equipment, and provides a protocol converter that can edit video through it. To do that.

Also, through serial transmission of data, a protocol converter located between a video server or VDR and VCR is connected to the RS422 communication port so that a clear image without data or data clock interference can be reproduced during data transmission. Its purpose is to construct and provide.

In addition, compared to non-linear systems, no additional digitizing is required, so there is no initial input delay time for editing, and a list of DDR (Digital Disk Recorder) files is displayed through the video server or VCR is selected directly. The present invention aims to provide a system capable of directly controlling between VDR and VCR by providing a separate editor in the converter because of excellent compatibility for communication.

With reference to the accompanying drawings, a preferred embodiment and structure of a protocol converter device control method for broadcast editing signal conversion and device-to-device control according to the present invention for achieving the above object will be described.

1 is a schematic block diagram showing an overall configuration including a converter device according to the present invention, which is a physically located converter between a video server 2 or VDR (VDR) and VSI (3). (1) sets the video server (2) or VDR (VDR) and VCR (VCR) (3) signal to master and slave on one side and the other side using multidrop method of RS422 communication port, respectively. It is programmed in the form of receiving the response from the slave by first requesting from the master.It receives data signals from one side, converts them according to the protocol of the other equipment, and outputs them to control between the two equipments. There is a characteristic.

FIG. 2 is a schematic block diagram showing an internal configuration and a control signal of a converter device according to the present invention. In order to implement a function as shown in FIG. 1, a protocol converter device for broadcast edit signal conversion and inter-device control is 1: 1 edited. The VCR analyzes the signal sent to the converter 1 using the RS 422 communication port, and responds to the VCR 3 or sends a command appropriate to the video server 2 for control. And play the resources in the video server 2 so that they can be automatically stored in the VCR 3, and the state of the VCR 3 Control unit 10 designed to control the video server 2 or VCR 3 by analyzing a signal input by a user using a keypad by matching a value with a state value of the video server 2. )Wow;

Consists of a toggle key and other keys (STOP, PLAY, REC, STANDBY, CUE, EJECT, REV, FF, JOG, SHUTTLE, IN, etc.) to control the video server 2 using the toggle key or (VCR) (3) is selected, and other keys can be used equally in the video server (2) or VCR (3). For example, a toggle key (VCR) can be used. Selecting (3) and then pressing a play button, which is an other key, a keypad input unit 20 on which VCR 3 is played;

A storage unit 30 for storing the control command protocol and firmware of the video server 2 or VCR and the state values of the video server 2 and the VCR 3;

A display unit 40 which functions to output an operation state of the video server 2 or VCR 3 on the screen;

EIA RS-422 communication port (1START BIT, 8DATA BITS, 1 PARITY BIT (ODD), 1STOP BIT, 38.4kb / s) Includes transmission and reception of control commands and status values between VCR (3) and converter (1) A serial data transmission unit 50 for communication;

A communication serial data transmission unit 51 including transmission and reception of control commands and status values between the video server 2 or the VDR and the converter 1 by the EIA RS-422 communication port; It is characterized by consisting of.

FIG. 3 is a flowchart illustrating a protocol conversion and control process for encoding a resource having HD VCR into HD VDR. The control method of the protocol converter device for the step of starting the operation of the HD converter in accordance with the application of power (S1);

In order to receive a signal to start editing, VCR (waiting for an edit signal) after the VCR edit remote signal is generated (Remote on), the server port for the encoder is selected (VDR Select Port), and the server is opened. Port open) (S2);

Requesting, at the converter, a device state for checking whether the VCR and the VDR are powered on (S3);

Remote off step S4 for encoding a resource in the VCR to the VDR;

A waiting step (S5) for the converter to receive a command for a 1: 1 editing function from VCR (VCR);

Checking whether the command from the VCR is a request for a device state or a time code of the VDR (S6);

If the signal received from the VCR to the converter in step S6 is a request for device status or a request for a time code, 1: 1 editing using the VCR protocol is performed. Adjusting the status value so as to enable branching to a step S11 for responding to VCR and a command reception step S5;

If the signal received from the VCR to the converter in step S6 is not a request for device status or a request for time code, the signal is a jog or shuttle command. Checking the recognition (S7);

In the step S7 of checking, when the signal received from the VCR to the converter is a jog or shuttle command, a response command indicating that the command has been normally received using the VCR protocol. Branching to transmitting (ACK) (S12) and waiting for command reception (S5);

Checking (S8) if the signal received from the VCR from the converter in the step S7 is not a jog or shuttle command (S8);

If the signal received from the VCR from the converter in the step S8 is a cue command, the command requested by the VCR is converted to a VDR protocol, and then VDR. By using a protocol (for example, VDCP), an Rcued command is transmitted to a video server when a video server device is connected to a converter, and to a VDR when a VDR device is connected to a converter. Step S13;

If the Rcued command is received normally, the device status value received from VDR is converted to VCR protocol, and then a response indicating that the VCR protocol has been successfully received using the VCR protocol. Branching to sending a command ACK (S16) and waiting for a command receiving step (S5);

Checking whether the received signal is a record command when the signal received from the VCR from the VCR is not a cue command in step S8;

If the signal received from the VCR from the converter in the step S9 is a record signal, the command requested by the VCR is converted to the VDR protocol, and then VDR. Transmitting a record command to a video server or a VDR using a protocol (S14);

If the Record command is received correctly, the device status value received from VDR is converted to VCR protocol, and then the response informs the VCR that the VCR protocol has been successfully received. Branching to sending a command ACK (S16) and waiting for a command receiving step (S5);

Checking whether the received signal is a stop command (S10) when the signal received from the VCR to the converter in the checking step S9 is not a record signal;

If the signal received from the VCR to the converter in the step S10 is a stop signal, the command requested by the VCR is converted to the VDR protocol and then VDR. Transmitting a stop command to a video server or a VDR using a protocol (S15);

When the Stop command is received normally, the device status value received from VDR is converted to VCR protocol, and then a response indicating that the VCR protocol has been successfully received is received using VCR protocol. Branching to sending a command ACK (S16) and waiting for a command receiving step (S5);

If the signal received from the converter from VCR (SCR) is not the stop signal in step S10, the method branches to the step of waiting for command reception (S5) to the HD VCR. It is characterized in that the process of encoding the resources to HD VDR (HD VDR) is made.

Steps S6, S7, S8, S9, and S10 corresponding to the step of checking the state information value of the signal are expressed as sequential progress through the conditional statement, but are not limited thereto. It is possible to implement selective progression through.

In addition, a plurality of commands may be doubled in addition to the cue, record, and stop commands corresponding to the status information, and the status information corresponding to each command signal corresponds to the VDR protocol. After the transmission to the video server or VDR (VDR), the step of transmitting a response command (ACK) indicating that the VCR is normally received (S16) and branching to the command receiving step (S5) is doubled It is obvious that anything that can be included in the present invention.

FIG. 4 is a flowchart illustrating a protocol conversion and control process for encoding a resource in a VDR to a VCR, in which operation of the HD converter is started while power is applied;

In order to receive a signal for encoding a resource in HD VDR into HD VCR, the converter generates a signal using VCR protocol and generates HD. VCR) Opens the server to edit and wait for the remote standby and insert the cassette tape, and to select and open a connection port with HD VDR using VDR protocol. (A2) transmitting a Select command to the converter after the server port executes an open command for waiting for a VDR Select Port and an edit signal (VDR Port open);

Requesting (A3) a device state for checking whether the VCR and VDR are powered on in the converter;

(A4) and sequentially transmitting a VCR edit ready command and a cue with data command to the VCR using the VCR protocol while the device is normally turned on. ;

After execution of Standby, Cued, and Preroll commands in HD VCR, the VSAL (HDCCR) is executed to verify that the commands sent to VCR through the converter have been executed normally. Confirming receipt of a response command (ACK) from the VCR (A5);

If no response command (ACK) is received, branch to step (A4) of sequentially transmitting to VCR (VCR) using the VCR protocol, and if the response command (ACK) is received, VDR (VDR). (A6) transmitting a Cued command informing VDR of a resource request signal of a resource using a protocol;

In order to check whether the command sent to VDR through the converter is executed normally, check the receipt of ACK from VDR after executing the cue through HD VDR. Step A7;

If a response command (ACK) is not received, branch to step (A6) of transmitting a cue command, and when the response command (ACK) is received, the converter uses a VCR protocol to obtain a VCR. (A8) transmitting a record command for recording data to the < RTI ID = 0.0 >

After execution of the Record command in HD VCR, the response command ACK is received from VCR to confirm whether the command transmitted to VCR through the converter is normally received. Confirming (A9);

When no response command (ACK) is received, the method branches to step (A8) of transmitting a record command to VCR using the VCR protocol, and when the response command ACK is received. Transmitting (A10) a PLAY command for transmitting a resource to a VDR using a VDR protocol;

In order to check whether the command transmitted to the VDR through the converter has been normally received, perform the play through the HD VDR and then confirm the reception of the response command ACK from the VDR. (A11);

If a response command (ACK) is not received, the process branches to step (A10) of transmitting a play command. If the response command (ACK) is received, the size and state encoded using the VDR protocol are indicated. Requesting (A12) repeatedly the time value of the state of the VDL (VDR) for controlling;

Checking (A13) whether the state value of the VDR is STILL or STOP;

If the status value is not STILL or STOP, the encoding branches to step A12, repeatedly retiring the status value of the VDR to continue, and the status value is STILL. (STOP) or the converter transmits a STOP command to the VCR using the VCR protocol to stop the encoding recorded in the VCR (A14). Wow;

After execution of the STOP command in HD VCR, a response command ACK is received from VCR to confirm whether the command transmitted to VCR through the converter is normally received. Confirming (A15);

If no response command (ACK) is received, branch to step (S14) of sending a STOP command, and if the response command (ACK) is terminated, the encoding operation is terminated, so ending the HD converter (A16). The process of encoding is performed.

5 and 6 are road maps illustrating a signal conversion process for broadcasting a converter device for encoding between a VCR and a VDR or a video server. The VDR protocol is illustrated in FIG. 4. In the step (A6) of transmitting a cue command for informing a resource request signal of a resource to the VDL, the HD VDR is transmitted to the VDR through the converter. In the process of executing the transmitted cue command before transmitting the response command (ACK) from the VDR for the successful reception, an ID for identifying the corresponding encoding resource is given. It is characterized by being included.

In addition, when the acknowledgment (ACK) is acknowledged in step A7 that the cue command transmitted to the VDR through the converter is normally received from the VDR, the converter receives the VSI. (VCR) requests the device status value and timecode, and VCR responds with the device status value and timecode, where the converter checks the location of the device status and timecode and if the values do not match The process of retransmitting the (Cued) command is characterized in that the record command can be doubled before the transmitting step A8.

In addition, when a record command is executed in VCR by a record command from the converter according to the present invention and a response command ACK is transmitted back to the converter, the converter is played in VDR. The PLAY command is transmitted to the VDR so that the command can be executed. In this case, the PLAY command is transmitted immediately after the preroll time.

The converter according to the present invention greatly reduces the time cost by minimizing the digitizing time that has previously occurred for editing between a video server or a VDR and a VCR device. Content sharing enables efficient cost management and distribution structure, and can significantly reduce the cost of tape purchase and system maintenance.

It also solves the difficulty of editing directly from HD VCR (HDCR) or video server, and reduces the editing time and cost of HD tape through direct editing. By converting server universal protocols VDCP and VCR protocols into compatibility, it saves the cost of building expensive non-linear editing equipment and eliminates the inconvenience of building data and editing tape separately.

As described above, the present invention has been described in detail, but it is apparent to those skilled in the art that various applications and applicability are within the scope of the technical idea of the present invention, and that such applications and applications have substantially the same functions, structures, and effects. It is natural that the branches belong to the appended claims in the above-described equivalent range.

Claims (6)

delete delete Starting operation of the HD converter while power is applied (A1); In order to receive a signal for encoding a resource in HD VDR into HD VCR, the converter generates a signal using VCR protocol and generates HD. VCR) Opens the server to edit and wait for the remote standby and insert the cassette tape, and to select and open a connection port with HD VDR using VDR protocol. (A2) transmitting a Select command to the converter after the server port executes an open command for waiting for a VDR Select Port and an edit signal (VDR Port open); (A4) and sequentially transmitting a VCR edit ready command and a cue with data command to the VCR using the VCR protocol while the device is normally turned on. ; After execution of Standby, Cued, and Preroll commands in HD VCR, the VSAL (HDCCR) is executed to verify that the commands sent to VCR through the converter have been executed normally. Confirming receipt of a response command (ACK) from the VCR (A5); If no response command (ACK) is received, branch to step (A4) of sequentially transmitting to VCR (VCR) using the VCR protocol, and if the response command (ACK) is received, VDR (VDR). (A6) transmitting a Cued command informing VDR of a resource request signal of a resource using a protocol; In order to check whether the command sent to VDR through the converter is executed normally, check the receipt of ACK from VDR after executing the cue through HD VDR. Step A7; If a response command (ACK) is not received, branch to step (A6) of transmitting a cue command, and when the response command (ACK) is received, the converter uses a VCR protocol to obtain a VCR. (A8) transmitting a record command for recording data to the < RTI ID = 0.0 > After execution of the Record command in HD VCR, the response command ACK is received from VCR to confirm whether the command transmitted to VCR through the converter is normally received. Confirming (A9); When no response command (ACK) is received, the method branches to step (A8) of transmitting a record command to VCR using the VCR protocol, and when the response command ACK is received. Transmitting (A10) a PLAY command for transmitting a resource to a VDR using a VDR protocol; In order to check whether the command transmitted to the VDR through the converter has been normally received, perform the play through the HD VDR and then confirm the reception of the response command ACK from the VDR. (A11); If a response command (ACK) is not received, the process branches to step (A10) of transmitting a play command. If the response command (ACK) is received, the size and state encoded using the VDR protocol are indicated. Requesting (A12) repeatedly the time value of the state of the VDL (VDR) for controlling; Checking (A13) whether the state value of the VDR is STILL or STOP; If the status value is not STILL or STOP, the encoding repeatedly times to continue and branches to step A12 requesting the status value of the VDR, and the requested status value is still ( In the case of STILL or STOP, the converter transmits a STOP command to the VCR using the VCR protocol to stop the encoding recorded on the VCR (A14). )Wow; After execution of the STOP command in HD VCR, a response command ACK is received from VCR to confirm whether the command transmitted to VCR through the converter is normally received. Confirming (A15); If no response command (ACK) is received, branch to step (S14) of sending a STOP command, and if the response command (ACK) is terminated, the encoding operation is terminated, so ending the HD converter (A16). Control method of a protocol converter device for HD signal editing signal conversion and device-to-device control, characterized in that consisting of. The method according to claim 3; After executing the step (S2) of waiting for the edit signal (VDR Port open) or the step (A2) of responding to the converter after executing the open command (VDR Port open), VSI and VDial in the converter are executed. And a step (S3) of requesting a device state for checking whether or not the power supply (VDR) is on or off (VDR) of the protocol converter device for HD broadcast edit signal conversion and device-to-device control. The method according to claim 3; In a step (A6) of transmitting a cue command for notifying a resource request signal of a resource to a VDL using a VDR protocol, the HD VDR is connected to a VDL through a converter. ID for identifying the corresponding encoding resource in the process of executing the transmitted cue command before transmitting the response command (ACK) from the VDR to ensure that the command transmitted to the VDR is normally received. Control method of a protocol converter device for HD broadcast editing signal conversion and device-to-device control. The method according to claim 3; When a record command is executed in VCR by a record command from the converter and a response command (ACK) is sent back to the converter, the converter plays the PLAY command so that the PLAY command can be executed. The PLAY command is transmitted to the VDR, wherein the PLAY command is transmitted immediately after the preroll time. Control method of protocol converter device.

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