KR0146693B1 - Reservation recording method for vtr - Google Patents

Abstract

In the video cassette recorder, a method and apparatus for making a reservation recording in accordance with an order (position) desired by a user in a video cassette recorder are described, which includes the total length of the video tape and the program to be recorded from the initial recording position of the video tape. It is possible to arbitrarily set a number of program recording positions irrespective of the TV broadcast time by calculating the tape movement amount from the tape absolute position until the scheduled recording start time and the remaining tape amount of the previously recorded program by fast forwarding or rewinding the tape.

Description

Tape positioning reservation recording method and device

1 is a schematic block diagram of a video cassette recorder having a tape positioning reservation recording function according to the present invention.

FIG. 2 is a detailed block diagram of the tape positioning reserved recording means shown in FIG.

3A to 3D are exemplary views showing a recording procedure for reserved recording by designating a tape position according to the present invention.

4 is a program input flowchart for reserving a television broadcast.

5 is a flowchart for reserving a television broadcast in accordance with an input program, but changing a program order recorded on a tape.

* Explanation of symbols for main parts of the drawings

1: remote controller 2: microprocessor

15: tape remaining calculation means 17: servo device

18: tape positioning means 181,184: subtractor

182,185 buffer 183 adder

186,187: Comparator Ts: Scheduled recording start time

Te: End recording time K: Absolute position of tape

Lt: Length of tape Lr: Length of remaining tape

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention generally relates to program reservation of a video cassette recorder, and more particularly, for reservation recording in a desired order (position) of a desired time zone by setting a recording order of a tape together with a reservation recording time during a reservation recording of a television broadcast. Tape positioning reservation recording method and apparatus.

As civilization develops and society develops day by day, the prevalence of video cassette recorders in each household is gradually increasing. As the prevalence of such video cassette recorders increases, the frequency of relying on TV recording for reservation of video cassette recorders increases. have. In particular, single-person homes, office workers, working couples, etc., family members, reservation recording using a timer is a big part of the bar, because the user inputs the date, time, channel, etc. in a certain order in advance in order to program Reservation was made.

However, such a reservation method has a drawback in that it is not possible to record a broadcast in a user's preferred broadcast order because the reservation is recorded on the tape according to the reservation setting order of time. For example, when a user wants to record four programs such as A, B, C, and D on one video tape, the user sets each reservation time by using a remote controller.

In this case, it is assumed that the following broadcast time zones are reserved.

A = 9:00-9:30 (continuous play)

B = 11:00-11:20 (Language Course)

C = 15:30-16:00 (continuous play)

D = 19:00-20:00 (Language Course)

When the scheduled recording of the above broadcasts (A, B, C, D), the user memorizes the program reservation recording start time, end time, channel number, etc. in the fastest time order. In this case, the order of recording on the tape is A → B → C → D, when playing, the user can watch the soap opera → language lesson → soap opera → language lecture according to the reservation order A → B → C → D.

In the conventional reservation method, since a reservation operation is performed by a timer or a real time method, the user can sequentially view the program A in the fastest time zone to the program D in the latest time zone. If in the above case, after watching a soap opera corresponding to A and then watching a soap opera corresponding to C, the user searches the C program by fast forwarding (FF) the deck and detects the C program. Has to be in normal playback mode, so there was some inconvenience in using. In order to prevent this to some extent, there is a program search method called a video index search system (VISS), but in this case, a key operation and a VISS code must be entered accordingly, which also has a disadvantage of being very troublesome.

Accordingly, the present invention provides a tape positioning reservation recording method in which a recording order of a tape is set together with a reservation recording time in a scheduled recording of a television broadcast, and the recording of the desired time zone is reserved according to a desired order to change the playback order arbitrarily. The purpose is to provide a device.

According to one aspect of the present invention for achieving this object, there is provided a method for reserved recording of a broadcast program by arbitrarily designating a plurality of television broadcast reservation recording program numbers having different broadcast time zones on a video tape. Calculating the tape movement amount from the initial recording position of the videotape, the absolute position of the tape from the start time of the scheduled recording of the current program to be recorded, and the remaining tape amount of the previously recorded program as shown in Equation (1) below; ; As a result of the above calculation, if the sum of the absolute tape position and the remaining tape amount is larger than the total length of the tape, the fast forwarding and rewinding of the video tape by the movement amount is performed from the reserved recording end point of the previously recorded program to the reserved recording start point of the currently recorded program. FF); If the sum of the absolute tape position and the remaining tape amount is less than the total tape length, the video tape is rewound by the movement amount from the reserved recording end point of the previously recorded program to the reserved recording start point of the program to be recorded. Doing; And when the difference between the total length of the tape and the absolute position of the tape to be recorded at the time of the fast forward / rewind (FF) or rewinding is the same as the length from the reserved recording start point of the program to be recorded to the tape end point. It is composed of the steps of stopping the forward rewind and the rewind operation so that the program is recorded on the videotape in any position designation order rather than the broadcast time sequence, and the recorded picture is reproduced in the above arbitrary order during playback. The tape movement amount Lm is expressed as follows. In other words,

Lm = Lt-K-Lr ----------- (1)

Where Lt is the total length of the video tape, K is the distance from the tape's initial recording position to the start point (time) of the scheduled recording of the current program, and the absolute position of the tape, Lr, is the remaining tape length, and Lm is the length of the previously recorded program. The tape movement amount from the end to the scheduled recording start time (time) of the program to be recorded is displayed.

According to the present invention, the fast forwarding and rewinding of the video tape is performed immediately after one program is recorded, and the fast forwarding and rewinding of the video tape is performed after the recording of one program. It is preferable to perform the recording just before the scheduled recording start time.

According to another aspect of the present invention, there is also described a program reservation recording apparatus of a video cassette recorder capable of reserve recording and reproducing a plurality of television broadcasts, which is currently recorded from the total length of a video tape and the initial recording position of the video tape. Tape positioning means for arbitrarily setting a number of program recording positions regardless of the TV broadcast time by calculating the tape movement amount from the absolute tape position until the scheduled recording start time (time) of the program to be recorded and the remaining tape amount of the previously recorded program. The tape positioning means includes: an adder for adding the absolute position K of the video tape and the remaining tape amount Lr; The video tape total length Lt and the signal K + Lr outputted from the adder are subtracted from the reserved recording end point of the previously recorded program to the predetermined recording start point of the currently recorded program. A first comparator for generating a signal moving by Lm); A subtractor for calculating a difference between the total tape length Lt and the absolute tape position K to be recorded when the video tape is moved; And a second comparator for generating a signal for stopping the tape movement operation when the signal Lt-K outputted from the subtractor is equal to the length from the reserved recording start point of the program to be recorded to the video tape end point. It is preferable that it consists of.

Here, if the sum of the absolute position of the tape to be recorded and the remaining tape amount (K + Lr) is larger than the total tape length (Lt) (K + LrLt), the first comparator is to record the current recording from the reserved recording end point of the previously recorded program. A fast forward and forward signal (FF) is generated to move the video tape up to the scheduled recording start point of the program by the amount of movement (Lm = Lt-K-Lr). If the sum is less than the total tape length (K + LrLt), the video tape is rewound by the amount of movement (Lm = Lt-K-Lr) from the reserved recording end point of the previously recorded program to the reserved recording start point of the program to be recorded. It is preferable to generate a signal to (REW).

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

1 is a schematic block diagram of a video cassette recorder having a tape position reservation recording function according to the present invention. The remote controller 1 has a function key for performing a normal video cassette recorder function, for example, PWR, Vol. . ▼, CH ▲, CH ▼, PLAY, REC, FF, REW, SEARCH, PGM (Program Memory), ENTER, VISS, MARK, ERASE, CLOCK / COUNT, TU / AV, SP / EP, P / STILL, STOP Many keys are installed, such as TV, VCR, MONITOR, etc.

When the power key PWR on the remote control 1 or set is pressed, the microprocessor 2 is powered on, and all the circuits shown in FIG. 1 are enabled. When the channel selection key is pressed, the microprocessor 2 controls the phase lock loop 3 to generate a tuning voltage to the tuner 4 so that the broadcast channel signal input through the antenna 5 is transmitted by the tuner 4. It is tuned and provided to the microprocessor 2.

The microprocessor 2 then controls the digit tone 6 to cause it to display as text the function currently being performed. In addition, the microprocessor 2 controls the on-screen display IC 7 to generate control signals for the corresponding characters at the time of program reservation or functioning of the video cassette recorder or television. In addition, the horizontal synchronous signal among the signals read from the video tape is separated by the horizontal synchronous signal separating unit 8 and applied to the on-screen display IC 7 to produce a text signal. Then, the radio frequency modulator 9 receives the output signal of the mixer 10 mixing the video signal and the on-screen display signal, modulates it, and displays it on the monitor 12 through the playback and recording block 11.

When the TV program reserves a recording schedule, the register 13 temporarily stores reserved broadcast contents (e.g., channel number, reserved recording start time, end time, program number, etc.) and saves them in the memory 14. In the reserved recording operation, a signal stored in the memory 14 is read and transmitted to the microprocessor 2. Further, the remaining tape calculating means 15 provides the remaining tape signal to the microprocessor 2 by means such as a conventional method (for example, a control pulse sensing method or a reel pulse sensing method), and the deck 16 and The servo device 17 is for driving a video tape, which is a general matter of a video cassette recorder.

Therefore, the most essential thing in the present invention is to record the programs in the order preferred by the user by arbitrarily changing the order of the reserved programs by fast forwarding or rewinding the tape during reservation recording, which will be described in detail.

FIG. 2 is a detailed block diagram of the tape positioning reserved recording means 18 shown in FIG. 1. The tape positioning reserved recording means 18 has a reserved recording start time Ts and a reserved recording end time Te. And a subtractor 181 for calculating the actual recording time (length) by calculating.

The subtracted signal is provided to the buffer 182 operated by the microprocessor 2. Therefore, the signal K output from the buffer 182 indicates the length from the beginning of the tape to the start time of the scheduled recording of the programs N1 to Nn to be recorded.

That is, the signal K is an absolute position from the beginning of the tape to the start time of the scheduled recording of the program as shown in FIG.

The absolute position signal K output from the buffer 182 is input to the adder 183 and the subtractor 184. A signal indicating the total length Lt of the tape is input to the other input terminal of the subtractor 184. The signal indicating the total tape length Lt is a signal already calculated by the tape remaining amount calculating means 15 by the user selecting at the time of initial mounting of the tape.

On the other hand, a signal indicating the remaining tape amount Lr calculated by the remaining tape calculating means 15 is input to the adder 183 through the buffer 185 turned on / off by the microprocessor 2. Therefore, the adder 183 adds the tape absolute position (K) and the remaining tape length (Lr) and compares it with the total tape length (Lt) to forward or fast forward (FF) or rewind (REW) the deck from the current position. It provides a signal to the comparator 186 comparing the. In this case, when the sum of the absolute position and the remaining tape amount is larger than the total tape length (Lt + KLt), the comparator 186 generates a signal for performing the fast forward rewind from the current position (the end point of the recorded program). On the other hand, when the sum of the absolute position and the remaining tape amount is less than the total tape length (Lt + KLt), the comparator 186 generates a signal for rewinding the deck from the current position and provides it to the servo device 7.

Then, the comparator 187 is a difference signal (Lt-K) between the tape remaining signal Lr generated by the tape remaining amount calculating means 15 and the total length Lt and the absolute position K output from the subtractor 184. Is compared to generate a signal indicating whether or not to stop the fast forward or rewind of the tape.

This process will be described in more detail with reference to FIG.

3 is for reservation recording four programs (N1, N2, N3, N4) in one tape according to the present invention, where the reservation time of the programs and their contents are assumed as follows.

N1: 9:00-9:30 (continuous play)

N2: 11:00 ~ 11:20 (Language Course)

N3: 15:30-16:00 (Continuous Play)

N4: 19:00 ~ 20:00 (Language Course)

As shown in FIG. 3 (a), the programs N1 and N3 are related to the soap opera, and the programs N2 and N4 are related to the language lecture. N2, N4) for later viewing.

Therefore, as shown in FIG. 3 (b), after recording the continuous play N1 from 9:00 to 9:30, the language lecture N2 should be recorded on the tape from 11:00 to 11:20. The absolute position K of the tape output from the buffer 182 is the sum of the recording times of the programs N1 and N3. That is, it is 60 minutes, which is the time from the beginning of the tape to the scheduled recording start time of the program N2.

The remaining tape length from the time point at which the program N1 was recorded (called the end of the hatched N1) to the end of the tape becomes Lr. Therefore, in order to reserve recording of N2 program after completion of reserved recording of N1 program, it is necessary to forcibly move the tape from the end of N1 program to the beginning of N2 program. For this, the tape moving length (Lm) is indicated as follows. do. In other words,

Lm = Lt-(K + Lr) ----------- (1)

In Equation (1), Lm represents the length of the tape to be moved to reserve recording of the next program (N2) after one program (N1) reservation recording, Lt is the total length of the tape, and K is the first part of the tape. And the tape absolute position from the reservation start time of the program to be reserved to record, and Lr displays the remaining tape amount after the program N1 of the advantage is reserved and recorded.

When the tape length Lm to be moved in FIG. 3 (b) is calculated, Lm = 115-60-85 = -30 since Lt = 115, K = 60, and Lr = 85. Therefore, K + LrLt, that is, Lm = -30, in this case, let the deck to perform the fast forward rewind as long as 30 tapes. At the time of fast forward winding, the comparator 187 detects the above equation (1) from the remaining tape signal calculated by the remaining tape calculating means, and operates the servo device 17 at the point where Lt-K and Lr are equal to each other. It stops and prepares to reserve recording the next program (N2).

On the other hand, if the program N3 is to be reserved after the scheduled recording of the program N2 is completed, the absolute position K is 30 and the remaining tape amount Lr is 35 as shown in FIG. The tape length Lm to be moved from the reservation completion point of N2) becomes Lm = 115-30-35 = + 50 from equation (1). Therefore, since +50 is calculated as can be seen in FIG. 3 (c), the tape is rewound by 50 from the end of the program N2.

When the scheduled recording of the program N4 is to be made after the reserved recording of the program N3 is completed, as shown in FIG. 3 (d), the tape absolute position K is 80 and the remaining tape amount Lr is 55. Since the tape length Lm to be moved is Lm = -20 from the equation (1), the tape is fast forwarded by 20 from the end of the program N3.

As described above, when one program is scheduled to be recorded and a subsequent program is to be recorded, the tape calculates a moving distance Lm from Equation (1) to perform fast forward or rewind.

As can be seen from FIG. 3, even though the broadcasting time of the program is different, the user can reserve the program start and end times so that the positions of the programs are recorded differently in one tape so that the user can play the TV. It is possible to watch the recorded broadcasts in any program order rather than in the broadcast time order.

4 is a program control flowchart for reservation recording of a position designation method according to the present invention. First, the microprocessor 2 determines whether a reservation recording key is input, and if a reservation recording key is not input, the program steps. In step S101, the process proceeds to step S102 to perform a general function. However, when a reservation recording key is input, the process proceeds to step S103 to perform a reservation mode.

In step S103, it is determined whether the user inputs the tape total length Lt key by operating the remote controller 1, and when the tape total length check key is input, the microprocessor 2 moves the control operation to step S104. It proceeds and displays on the on-screen display 7 the total length of the tape (in this case, the total tape length refers to T-120, T-300, etc.).

Then, the user inputs a reservation number (e.g., N1, N2, ... Nn) of the program (step S105), and then inputs a broadcast channel number (e.g., CH7, CH9, CH11, etc.) to be reserved (step S105). In step S106 and step S107, the reservation recording start time Ts is set, and in step S108, the reservation recording end time Te is inputted. When such channel number, reservation start and end time are completely set, When the user presses the memory key (not shown) (step S109), this state (channel number, start and end recording time) is input to the memory 14 and saved.

If there are more programs to be reserved, the control operation proceeds from step S111 to step S112. In this case, the microprocessor 2 increases the program reservation number by one and then performs the control operation in step S112. ), The process returns to step S106 and the above-described process is repeated. However, when all programs have been reserved, the control operation proceeds from step S111 to step S113, in which the user turns off the power to complete all reservation operations.

When the reservation of the program is completed in this way, a process of reserve recording a plurality of programs as shown in FIG. 3 on the tape will be described.

5 shows a control flowchart for performing a reservation recording function. When reservation recording is not set, the control operation proceeds from step S201 to step S202 to perform a general function. When the recording start time Ts, i.e., 9:00, is reached, the microprocessor 2 controls the tuner 4 to tune the channel of the reserved N1 program. It proceeds to S204. When the channel for the N1 program is selected, the microprocessor 2 causes the deck 16 and the servo device 17 to record the N1 program on the video tape (step S205),

When the recording completion time Te at the time of recording the N1 program arrives, the control operation proceeds from step S206 to step S207, whereby the recording of the N1 program is completed. At this time, the microprocessor 2 determines whether there are more reserved programs, but if there is no reserved program, all reservation control operations are stopped, but if there are more reserved programs, control is made from step S208 to step S209. do. In this case, the microprocessor 2 is prepared to move the tape to reserve recording of the N2 program by increasing the internal count by one (step S210).

In step S210, the tape movement amount Lm is calculated from Equation (1) above, and when the sum of the absolute position K and the remaining tape length Lr of the tape is greater than the total length Lt of the tape, as a result of the two calculations Under the control of the microprocessor 2, the servo device 17 operates the deck 16 to advance the program from step S211 to step S212 to fast forward the tape.

If forward fast forwarding is completed after the forward fast forwarding has been performed by the amount of movement of the tape Lm (step S213), the deck is stopped to perform the standby mode to reserve the next program (step S214).

However, when the sum of the absolute position K of the tape and the remaining tape amount Lr is smaller than the total length Lt of the tape, the tape is rewound by the movement amount Lm from the current position (step S215). When this is completed in this rewind mode, the program proceeds from step S216 to step S214 so that the deck is stopped.

Referring to FIG. 3 again, if you want to record programs with different broadcasting time zones (N1, N2, N3, N4) on one video tape, first record N1 programs from 9:00 to 9:30 minutes. The tape movement amount (Lm = -30) is determined by the above formula (1) (that is, Lm = Lt-K-Lr), the tape is advanced by 30, and then the deck is stopped and the next program ( Wait N2) for reservation recording.

If it is 11:00, the N2 program will be recorded for 20 minutes, then the tape will be rewound by 30, and then the N3 program will be reserved for recording from 15:30 to 16:00. When the language course is reserved for 30 minutes by 15:30, the fast forwarding will be performed 20 times to record the language course (N4) for 35 minutes from 19:00. In addition, when 19:00 is reached, the N4 program is recorded so that the user can watch the recorded broadcast in the order of the tape positioning (ie, for each program desired by the user) instead of the broadcast time sequence.

As described above, since the reservation method according to the present invention can record a broadcast program by designating an arbitrary program number rather than a sequence of broadcast times, it is possible to play back different similar types of programs in succession, thereby providing convenience in use. will be.

Claims (7)

A method for reserved recording of a broadcast program by arbitrarily designating a plurality of television broadcast reservation recording program numbers each having a different broadcast time zone on a video tape; The tape movement amount is calculated from the total length of the video tape, the absolute tape position from the initial recording position of the video tape to the start time of the scheduled recording of the program to be recorded, and the remaining tape amount of the previously recorded program as shown in Equation (1) below. Making a step; As a result of the above calculation, if the sum of the absolute tape position and the remaining tape amount is larger than the total length of the tape, the fast forwarding and rewinding of the video tape by the movement amount is performed from the reserved recording end point of the previously recorded program to the reserved recording start point of the currently recorded program. FF); If the sum of the absolute position and the remaining tape amount is less than the total tape length, the video tape is rewound by the amount of movement from the reserved recording end point of the previously recorded program to the reserved recording start point of the program to be recorded. step; And when the difference between the total length of the tape and the absolute position of the tape to be recorded at the time of the fast forward rewind (FF) or rewind (REW) is equal to the length from the reserved recording start point of the program to be recorded to the tape end point. Stopping the forward and rewind operation, the program is recorded on the video tape in any position designation order rather than the broadcast time order, and during playback, the tape position reservation is made. How to record. Lm = Lt-K-Lr ----------- (1) Where Lt is the total length of the video tape, K is the absolute position of the tape, the distance from the tape's initial recording position to the scheduled recording start point (time) of the program to be recorded, Lr is the remaining tape, and Lm is the previously recorded program. The tape movement amount from the end of to the start point (time) of the scheduled recording of the program to be recorded. The method according to claim 1, wherein the fast forwarding and rewinding of the video tape is performed immediately after one program is recorded. The method of claim 1, wherein the fast forwarding and rewinding of the video tape is performed immediately after a program is recorded and immediately before a start time of a scheduled recording of a program to be recorded. A program reservation recording apparatus of a video cassette recorder capable of reserve recording and reproducing a plurality of television broadcasts; The amount of tape movement is calculated from the total length of the video tape, the absolute tape position from the initial recording position of the video tape to the scheduled recording start point (time) of the program to be recorded, and the remaining tape amount of the previously recorded program. And a tape position designating means for arbitrarily setting a plurality of program recording positions. The tape positioning apparatus according to claim 4, wherein the tape positioning means includes: an adder for adding an absolute position K of the video tape and a remaining tape amount Lr; The video tape total length Lt and the signal K + Lr outputted from the adder are subtracted from the reserved recording end point of the previously recorded program to the predetermined recording start point of the currently recorded program. A first comparator for generating a signal moving by Lm); A subtractor for calculating a difference between the total tape length Lt and the absolute tape position K to be recorded when the video tape is moved; And a second comparator for generating a signal for stopping the tape movement operation when the signal Lt-K output from the subtractor is equal to the length from the reserved recording start point of the program to be recorded to the video tape end point. A program recording recording apparatus for a video cassette recorder, which is configured. 6. The method of claim 5, wherein the first comparator reserves a previously recorded program when the sum (K + Lr) of the absolute position of the tape to be recorded and the remaining tape amount is larger than the total tape length (Lt) (K + LrLt). Program reservation of a video cassette recorder, characterized by generating a signal for fast forwarding and winding (FF) the videotape by the amount of movement (Lm = Lt-K-Lr) from the recording end point to the scheduled recording start point of the program to be recorded currently. Recording device. 6. The method of claim 5, wherein the first comparator compares the program to be recorded from the reserved recording end point of the previously recorded program when the sum of the absolute position of the tape to be recorded and the remaining tape amount is smaller than the total tape length (K + LrLt). And a signal for rewinding the video tape by the amount of movement (Lm = Lt-K-Lr) to the start point of the reserved recording.