KR100608848B1 - Reservation recording and reproducing method using link functions of video recorder - Google Patents

Abstract

The present invention relates to a technology for receiving reservation information of a user from a television receiver and transmitting the reservation information to a video recorder through a control line, and performing a reservation recording or playing function at a corresponding point in time according to the reservation information.

The object of the present invention is the first step of receiving the recording information set by the user of the microcomputer of the television receiver via the control line to the microcomputer of the video recorder; A second step of storing reservation recording information transmitted through the control line in the microcomputer of the video recorder and checking a reservation recording start time; A third process of performing a reservation recording function based on the reserved recording information by checking that the reservation recording start time is reached is achieved.

Description

RESERVATION RECORDING AND REPRODUCING METHOD USING LINK FUNCTIONS OF VIDEO RECORDER}

1 is a block diagram of a V-C is applied to the reservation recording and playback method of the present invention.

2 is a format diagram of a physical layer frame on a control line according to the present invention;

3A to 3C are timing diagrams of signal bits transmitted through a control line.

FIG. 4 is a table showing standards of parameters constituting each symbol in FIG. 3. FIG.

5A is a signal flowchart of a reservation recording method according to the present invention;

5B is a signal flowchart of a reservation reproduction method according to the present invention;

6 is a format diagram of a local device control signal according to the present invention;

7 is a format diagram of a data request signal according to the present invention;

8 is a format diagram of a data response signal according to the present invention;

Fig. 9A is a timing check explanatory diagram of start bits for confirming the ATV link format.

Fig. 9B is a timing check explanatory diagram of an application identifier (A.ID).

10A is a format diagram of extended commands among the components of a command block.

Fig. 10B is a format diagram of a control command among the components of the command block.

10C is a format diagram of message end bits among components of a command block.

11A is a data format diagram of a timer program.

11B is a data format diagram of a timer play set.

12A is an image on format diagram of a data operation block.

12B is a format diagram of local device state information for a call response.

12C is a diagram of a current state information format of a local device for performing a link record.

12D is a format diagram of link channel state information.

12E is a format diagram of clock information.

12F is a format diagram of channel preset data.

Fig. 12G is a format diagram of real time count data for tape travel.

12H is a format diagram of the remaining tape value data.

13A is a format diagram of "year" data.

Fig. 13B is a format diagram of "month" data.

Fig. 13C is a format diagram of "one" data.

13D is a format diagram of "time" data.

Fig. 13E is a format diagram of "minute" and "second" data.

Fig. 13F is a format diagram of "main" data.

Fig. 13G is a format diagram of "power state" data.

Fig. 13H is a format diagram of "channel band" and "channel number" data.

Fig. 13I is a "state" data format diagram of the VRC.

Fig. 13J is a format diagram of "program record type" data.

Fig. 13K is a format diagram of "audio state information" data.

Fig. 13L is a format diagram for Viss numbers of timer play.

Fig. 13M is a format diagram for the Viss direction of timer play.

Fig. 13N is a format diagram of "tuner / deck operation mode" data.

Fig. 13O is a format diagram of " DV / BC mode "data;

Fig. 13P is a format diagram of "tape rate" data.

Fig. 13Q is a format diagram of "tape and safety tap" data.

*** Description of the symbols for the main parts of the drawings ***

10: TV receiver 11: TV microcomputer

12: memory 13: on-screen part

20: V seed 21: micro computer for V seed

CTL: Control Line

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a technology for simplifying recording or playback key operation by transmitting and receiving necessary information through a video recorder and a television receiver, and in particular, by receiving reservation information of a user from a television receiver and receiving a video recorder through a control line. The present invention relates to a method of recording and playing back a video recorder using a link function, wherein the video recorder is configured to perform a reservation recording or playing function at a corresponding time according to the reservation information.

In the conventional television receiver and VLC link system, the video program or the audio signal is simply transmitted through a dedicated transmission line to reproduce or record the required program. Therefore, in such a link system, when the reservation recording function or the reservation reproduction function is to be performed, the user must input a corresponding control command for each of the two video devices by using a remote controller or the like.

As described above, in the conventional video device link system, when the two video devices want to perform one function related to each other, such as a recording or a playback function, there is an inconvenience in that the user has to operate various keys including the power key.

Accordingly, an object of the present invention is to display a reservation menu screen on a television receiver, receive reservation information of a user, and perform reservation reservation or reservation playback function in a video device link system. The present invention provides a method of reservation recording and playback of a video recorder using a link function of transmitting to a video recorder and performing a reservation recording or playing function at a corresponding point in time according to the reservation information.

The reservation recording method of a video recorder according to the present invention displays a reservation recording menu screen on a television receiver, receives a reservation recording information set according to a user's operation by a microcomputer of the television receiver, and inputs the reservation to the microcomputer of the video recorder via a control line. A first process of transmitting; A second step of storing reservation recording information transmitted through the control line in the microcomputer of the video recorder and checking a reservation recording start time; A third process is performed to check that the scheduled recording start time is reached and to perform a scheduled recording function based on the reserved recording information.

According to the present invention, the reservation playback method of V-Cal displays a reservation playback menu screen on a television receiver, and the microcomputer of the television receiver receives reservation playback information set according to the user's key operation to a video recorder through a control line. A first process of transmitting; A second step of storing reservation reproduction information transmitted through the control line in the video recorder and checking a reservation reproduction start time; And a third process of reproducing the corresponding program based on the reserved reproduction information by checking that the reserved reproduction start time is reached.

1 is a block diagram of a link control apparatus of a video apparatus to which the recording method of the present invention is applied, as shown in FIG. 1, when a reservation recording or a playback request is made, a corresponding menu screen is displayed and reservation information is input from a user. A television receiver (10) for transmitting to the VRF 20 side through the CTL and displaying a video signal which is powered on at the reserved playback time and is transmitted from the VRL 20; V to store the reserved recording or playback information transmitted through the control line (CTL) in the internal memory and perform a reservation recording function or a reservation playback function based on the reservation information when the reserved time is reached. Seed 20; A control line (CTL) for linking the television receiver 10 and VRC 20 to be suitable for communication is constructed.

The television receiver 10 includes a television microcomputer 11 that is connected to the VRC 20 through the control line CTL and communicates online. A memory 12 for managing menu screen display information for reservation recording and playback; An on-screen unit 13 for generating character information on-screen signals for a user under the control of the microcomputer 11; A transmission / reception port (Tx / Rx) for preventing data collision when communicating through the control line (CTL); It is composed of a pull-up resistor (R2) for maintaining the communication signal of the control line (CTL) at a constant level, it will be described with reference to Figures 2 to 4 attached to the operation of the present invention configured as described above.

When the television receiver 10 is connected and communicated with the VRT 20 through the control line CTL, pull-up resistors R2 and R4 on the control line CTL to maintain the communication signal at a constant level. ) Was used.

First, the characteristics of the communication between the television receiver 10 and VRC 20 will be described.

First, in the present invention, the on-line communication method was applied, and each transmission / reception port (Tx / Rx) was used as a countermeasure against data collision during communication. In addition, communication is performed in units of one word, and the data collision detection side switches to the reception mode during communication. _Wait for a predetermined time (T _WAIT = 3 bits) in the standby state (control line: 'high') before starting communication. In the case of N word data communication, a predetermined waiting time (T _WAIT = 40 to 60 msec) is maintained between each word data, and the data is transmitted from the most significant bit (MSB) at the data interface.

Second, the transmitting side detects the acknowledgment signal ACK to check whether the receiving side receives normal data. If the acknowledgment signal ACK is not detected, the transmitting side again has a predetermined waiting time (T _WAIT ≤ 1000 msec). If the same data is transmitted and the acknowledgment signal ACK is not detected continuously, the above operation is repeated after a predetermined number of times (for example, five times), and then ends.

Third, the response time at the receiving side is within a predetermined time (T _RESPONSE = 200 msec).

Fourth, according to the link chain configuration as shown in FIG. 1, it is possible to continuously connect the video devices other than the respective devices, for example VRC 20, and each of these devices can be independently connected. Operates with a stream / downstream stream. In addition, bi-directional interconnection is possible, and signal transmission paths can be switched in the video device of the master or slave. Easy to install or replace

Meanwhile, FIG. 2 illustrates a format of a physical layer frame on a control line CTL when two video apparatuses communicate through the control line CTL. Same as

The start sequence has an ATV (Automatic TeleVideo) link format and includes a start bit (S) and a three mode bit (A.ID). Here, the start bit (S) is for checking the start and format version of the new link frame, the application mode three mode bit (A.ID) is for checking the ATV link version_01 format (= '001'). will be.

The header block is used to identify the source and destination of the current communication link, which is a link master (LM), a slave address (SA), and an acknowledgment bit (ACK). ) Here, the link master LM represents information of the current link master, and the slave address SA represents information of a destination. In addition, the acknowledgment bit (ACK) is a bit indicating whether the header data is normally received. The acknowledgment bit (ACK) outputs a command block after confirming the acknowledgment bit (ACK) output from the receiver. For example, if ACK = 0, it means that the receiver has processed the received data. If ACK = 1, it means that the data reception error or received data has not been processed at the receiver.

The command block is an extended command table (ECT), a control command (CMD), and a message end bit based on an interface operation code (OP code) for local device control and data checking between devices. (EOM) (End of Message) and Acknowledgment Bit (ACK). Here, ECT = 0 means a normal control opcode, and ECT = 1 means a reserved area to be used in the future. The control command CMD is a field of a link communication opcode and includes a control, a display, and a general command.

The data block is an interface operand data block between devices, and includes a message end bit (EOM) and an acknowledgment bit (ACK) as well as control or display data. The control and display data of N words are transmitted using the control or display data.

In the command block and the data block, the message end bit (EOM) is an information bit for determining whether the control block depends on the current link block at the transmitting side. If EOM = 0, there is a dependent communication block. If EOM = 1, this means that there is no dependent communication block. In this case, the link control is completed after checking the acknowledgment bit (ACK).

The acknowledgment bit (ACK) is a bit indicating whether the communication block receives normal data on the receiving side. The transmitting side checks the acknowledgment bit (ACK) transmitted from the receiving side and takes the following control operation. For example, if ACK = 0, it means that the receiving side has processed the received data. If EOM = 0, the transmitting side transmits the next control block, and if EOM = 1, the link control is terminated in the current state. . If ACK = 1, it means that data reception error or received data could not be processed. When the acknowledgment bit (ACK) from the receiver is not detected, the transmitting side retransmits the same data after a predetermined time (e.g., 1000 msec), and the acknowledgment bit (ACK) is continuously transmitted a predetermined number of times (for example, 5 times) If not detected, the communication ends.

As a countermeasure for preventing a data collision caused by the television receiver 10 and the VR 20 simultaneously occupying the control line CTL, the control line CTL is continuously 'high' for a period of at least 3 bits. Check whether to maintain (standby state). If the check indicates that the device remains 'high' for more than 3 bits, the new link master can occupy its control line (CTL) and send a new message.

If the control line (CTL) is occupied by the current link master and the control line (CTL) remains inactive for 7 bits or more, the new link master can occupy the control line (CTL) and transmit a new message. Will be.

If the control line CTL remains inactive for more than 9 bits after a message has already been transmitted through the control line CTL by the current link master, the link master continues to occupy the control line CTL. You will be able to send messages.

If the control line (CTL) remains inactive for 5 bits or more after one frame of message (Frame_1) is transmitted through the control line (CTL) by the current link master, the link master is the control line (CTL). Can continue to occupy and transmit the message Frame_1 again.

Meanwhile, FIG. 3 exemplarily illustrates the format and timing of signal bits transmitted through the control line CTL. Here, (a) is a start bit (S), (b) is a logic '0', (c) is a logic '1'. 4 exemplarily shows specifications of parameters constituting each symbol in FIG. 3.

In the above description, the link master means the TV microcomputer 11 or the VCD microcomputer 21, and the slave also means the TV microcomputer 11 or the VCD microcomputer 21. That is, the link master and the slave are not fixed to the TV microcomputer 11 or the VCD microcomputer 21, but can be changed according to a given situation.

When a key related to reservation recording or reservation playback is input by a user, reservation information input by the user and a mode switching request command are transmitted using the physical layer frame of the above format. It does not require much key operation. That is, upon reservation recording or reproduction request, the microcomputer 11 of the television receiver 10 transmits the reservation recording information or the reservation reproduction information set by the user to the VR 20 through the control line CTL.

To this end, the microcomputer 11 of the television receiver 10 manages information for displaying the function of the VRT 20 using the first area 12A of the memory 12, and the second area ( 12B) is used to manage its own state information and information to be transmitted, and the third area 12C is used to manage the state information of the VR 20, the slave address SA, and the like. In addition, since the microcomputer 11 of the television receiver 10 generates its own on-screen information to notify the user through the on-screen unit 13, the V-C20 has a separate on-screen unit. You do not have to do.

Hereinafter, the reservation recording and reproducing method according to the present invention will be described in detail.

In the reservation recording process, as shown in FIG. 5A, when the reserved recording setting key is input through the key input unit of the television receiver 10, the TV microcomputer 11 uses the on-screen unit 13 to display the menu screen for reservation recording. Is displayed. Accordingly, the user sets broadcast start time and end time, broadcast channel, and recording mode (SP / EP) of a program to be reserved. At this time, the TV microcomputer 11 transmits the reservation recording information set by the user to the VRC 20 side through the control line CTL.

The microcomputer 21 of the VR 20 stores the reservation recording information transmitted from the television receiver 10 in an internal memory, compares the current time with the reserved time, and makes a reservation when the same is matched with each other. Switch channels according to the information and record in the corresponding recording mode.

On the other hand, the reservation reproduction processing process, as shown in Fig. 5b, when the reserved reproduction setting key is input through the key input unit of the television receiver 10, the TV microcomputer 11 uses the on-screen unit 13 for reservation reproduction. Display the menu screen. Accordingly, the user sets the playback start time and end time of the program to be reserved. At this time, the TV microcomputer 11 transmits the reservation recording information set by the user to the VRC 20 side through the control line CTL.

The microcomputer 21 of the VR 20 stores the reserved reproduction information transmitted from the television receiver 10 in an internal memory, compares the current time with the reserved time, and agrees with each other. A command for switching the power-on and link channel to the television receiver 10 is transmitted to the television receiver 10 through the control line CTL, and the deck system is driven to perform a playback operation.

Therefore, the power of the television receiver 10 is automatically turned on and switched to the preset link channel CH3 or CH4 even if the user does not perform a separate key operation. In this state, the video signal reproduced and output from the VRF 20 is transmitted to the television receiver 10 through a predetermined transmission line and the link channel and displayed on the screen.

Meanwhile, the link interface data for performing the reservation recording and playback function using the link function as described above will be described.

6 illustrates a format of a control command CMD for controlling a local device.

Here, the control command CMD = "00000001" / "00000010" performs a power on / off operation of the local device. In addition, CMD = "00000110" is data transmitted to the VRC 20 side for inputting a reserved recording of a broadcast program.

FIG. 7 shows the format of a control command CMD for requesting data from the other side, and FIG. 8 shows the format of a response command for a data request command as shown in FIG. Here, it can be seen that all the fifth bit values are set to "1" from the least significant bit LSB, which means it is a request command.

The control command CMD = "00010001" is a general call command for checking the link interface status. CMD = "00010010" is a command for checking the status of the current local device. CMD = "00010011" is a command for checking interface link channel information.

CMD = "00010101" is a command for requesting download to check the preset channel information of the master device on the local device side. CMD = "00010110" is a command for requesting the count value of the VRL 20 which is a local device, and CMD = "00010111" is a command for requesting the remaining tape value of the VRL 20 as a local device.

The start bit S is a bit for confirming the ATV link format, which is processed by the timing check of the waveform as shown in FIG. In addition, the application identifier A. ID is a three mode bit capable of confirming ATV link version — 01 (ATV Link Ver — 01), which is recognized by a timing check as shown in FIG.

FIG. 10A illustrates an example of a definition of an extended command ECT among components of a command block, 10B illustrates an example of a definition of a control command CMD, and 10c illustrates an example of a definition of a message end bit EOM. It is shown.

FIG. 11A illustrates a definition example of a data block for reservation recording at a local device (Timer Program), and FIG. 11B illustrates a definition example of a data block for reservation reproduction (Timer Play).

12A relates to image on, which is an optional feature that turns on video and audio at the local device for the video source on the sending side.

12B relates to a general call response. Local device status information is output in response to a general call command for checking the link interface status on the local device side.

12C relates to a local status information response, which is the current status information of a local device output to perform a link record.

12D relates to a link channel information response and outputs link interface channel state information of a master and a local device using the link channel information response.

12E relates to a clock information response, and outputs current date and time information from a local device using the clock information response.

12F relates to a channel preset data response and uses this to output memory preset information of the channel.

FIG. 12G relates to a real time counter response of the VRC 20, and outputs a running direction and a count value of the tape when the VRL 20 is driven.

FIG. 12H relates to the remaining tape response of the VRT 20, and outputs the remaining value of the tape according to the running speed of the tape when the VRL 20 is driven.

13A to 13Q illustrate definition examples of common data operation blocks.

FIG. 13A illustrates an example of definition of "year" data consisting of 7 bits, FIG. 13B illustrates an example of definition of "month" data composed of 4 bits, and FIG. 13C illustrates "day (day) composed of 5 bits. ) "An example of data definition is shown.

FIG. 13D shows an example of definition of "hour" data made up of 5 bits, and FIG. 13E shows an example of definition of "minute" and "second" data made up of 6 bits. 13f shows an example of the definition of "week" data in three bits.

Fig. 13G shows an example of definition of "power state" data consisting of 1 bit, and Fig. 13H shows an example of definition of "channel band" and "channel number" data consisting of 7 bits. Fig. 13I shows an example of the definition of the "state" data of the VRC 20 consisting of 6 bits.

FIG. 13J shows an example of definition of "program record type" data consisting of 3 bits, and FIG. 13K shows an example of definition of "audio state information" data composed of 3 bits.

Fig. 13L shows an example of the definition of "Viss number" data during 6-bit reserved playback, and Fig. 13M shows an example of the definition of "driving direction" during 1-bit reserved playback.

FIG. 13N illustrates an example of definition of "tuner / deck operation mode (EE / VV)" data composed of 1 bit, and FIG. 13O illustrates an example of definition of "TV / VC mode" data composed of 1 bit. An example of definition of "tape rate" data consisting of 2 bits is shown, and FIG. 13Q illustrates an example of definition of "tape and safety tap" data consisting of 2 bits.

As described in detail above, in the present invention, when performing reservation recording or reserved playback in a link system of a video recorder and a television receiver, a reservation menu screen is displayed on the television receiver to receive user reservation information, and the reservation is made. By transmitting the information to the video recorder through the control line and performing the reservation recording or playback function at the corresponding time according to the reservation information, it is possible to guarantee the convenience of use as much as possible.

Claims (7)

A first step of receiving, by the microcomputer of the television receiver, the reservation recording information set by the user and transmitting the reserved recording information to the microcomputer of the video recorder through a control line; A second step of storing reservation recording information transmitted through the control line in the microcomputer of the video recorder and checking a reservation recording start time; And a third process of performing a reservation recording function based on the reserved recording information by checking that the reservation recording start time is reached. 2. The reservation recording method according to claim 1, wherein the first step sets a reservation recording information by displaying a menu screen for setting reservation recording. The method of claim 1, wherein when the reservation recording information is transmitted through the control line, the reservation recording method is transmitted through a communication frame including a start sequence, a header block, a command block, and a plurality of data blocks. The method of claim 1, wherein the recording information reserved in the third process comprises a broadcast start time and end time, a broadcast channel, and a recording mode (SP / EP) of a program to be reserved. A first step of receiving, by the microcomputer of the television set, the reservation reproduction information set by the user and transmitting the reserved reproduction information to the video recorder through the control line; A second step of storing reservation reproduction information transmitted through the control line in the video recorder and checking a reservation reproduction start time; And a third step of reproducing the corresponding program based on the reserved reproduction information by checking that the reservation reproduction start time has been reached. 6. The method of claim 5, wherein the third process comprises: a first step of checking that a scheduled playing time is reached; A second step of transmitting a power-on command to the television receiver side and a switching channel to a link channel through the control line when the reserved reproduction time is reached, and driving the deck system in a reproduction mode to reproduce and output a video signal; And a third step of transmitting the reproduced output video signal to the television receiver side through a predetermined transmission line for display. 6. The method of claim 5, wherein when the reserved reproduction information is transmitted through a control line, the reserved reproduction method is transmitted through a communication frame including a start sequence, a header block, a command block, and a plurality of data blocks.

Images