KR0129992B1 - Method of searching tapes while fast forwarding and rewinding - Google Patents

Abstract

A tape search method when performing a high-speed forwarding operation and a high-speed rewinding operation measures a winding quantity of a tape, and checks an intermediate contect of a tape without performing a stop function even the high-speed forwarding/rewinding function. The tape search method includes the steps of: storing a tape residula quantity and a linear time counter value when a present state is not a stop state and there is a memory key input, and arranging(S10) the stored tape residual quantity or a linear time counter value in a memory order; performing(S30) a play function during a predetermined time, when FF or REW key is input and a memory key is input within a constant time and when a present tape residual quantity and linear time counter value is the same as the tape residual quantity and the linear time counter value stored in the step(S10); and performing an operation corresponding to an input key if there is a mechanism related key, and releasing(S50) a memory play function.

Description

Tape Searching Method When Performing Fast Forward and Rewind Functions

1 is a hardware block diagram for implementing a tape searching method when performing a fast forward and rewind function according to the present invention.

2A, 2B, and C are flowcharts for performing a tape searching method when performing the fast forward and rewind functions according to the present invention.

3a and 3b show the operation of this invention on a tape.

* Explanation of symbols for main parts of the drawings

10: keyboard 20: servo system

MICOM: Mycom

The present invention relates to a tape searching method of a video cassette recorder having a function of measuring the amount of tape wound, and more particularly, to play, search, fast forward (FF) and rewind (REW) functions. After storing the amount of winding or the remaining amount of tape at any tape position at the time, the play function is executed for a certain time from the memory position during the fast forward and rewind function, and the stop function is not performed even when the fast forward and rewind function is performed. The present invention relates to a tape search method for performing a fast forward and rewind function so that the intermediate content of a tape can be checked.

In general, the contents of a tape in a video cassette recorder (hereinafter referred to as a VCR) or a video tape recorder (hereinafter referred to as a VCR) are recorded at the beginning of the tape. You can use the Index Search function to find out or check the tape while the user drives the tape.

However, the index search function only records the title of the contents of the tape at the beginning of the tape. Therefore, if the user wants to know the contents of the tape by using the index search function, the user can use the fast forward (hereinafter, , FF.) Or rewind (hereinafter referred to as REW) function should be stopped to check the contents of the tape. That is, until now, if you want to check the contents of the middle of the tape or to see the contents of the middle part that you want, you can stop the driving of the middle tape while performing the FF or REW function. I had to confirm that it was quite inconvenient.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to store the amount of tape remaining or the amount of tape wound at an arbitrary tape position when performing play, search, FF, and REW operations, and the same position at FF or REW. After the play for a certain period of time, and to start the fast forward and rewind function to perform the FF or REW function to provide a tape search method.

A feature of the present invention for achieving the above object is a tape searching method of a video cassette recorder having a function of storing a remaining amount of tape or a linear time counter value of a tape, the tape being input at the time of memory key input without the current state being a stop state. Storing the remaining value or linear time counter value and aligning the stored tape remaining value or linear time counter value in the order of memorization, and the current tape when the memory key is entered within a certain time when the FF or REW key is pressed while the current state is not stopped. If the remaining value or the linear time counter value is the same as the remaining tape value or the linear time counter value stored in the memory key in the above step, performing the play function for a predetermined time; and if the mechanism related key is input, the operation corresponding to the input key is performed. Memory player after The tape in the search method at the time of performing fast-forward and rewind comprising the step of releasing.

Hereinafter, a preferred embodiment of the tape searching method at the time of performing the fast forward and rewind functions according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a main hardware system of a general VCR, and a tape search method for performing a fast forward and rewind function using a memory play function according to the present invention includes a keyboard 10 having various function keys arranged thereon, and a system. General VCR system consisting of MICOM controlling overall, capstan motor driving tape at accurate speed, and servo system 20 controlling speed and phase of drum motor to keep tape phase constant. It is implemented in

2 is a flow chart for performing a tape search method when performing the fast forward and rewind functions according to the present invention, wherein a tape remaining value or a linear time counter when a memory key is input while the current state is not a stop state is shown. Counter: Hereafter, LTC is stored in the memory of MICOM, and the stored tape remaining value or LTC values are sorted in the order of memory (S10), and the current state is not stopped. Performing a play function for 20 seconds when the current tape remaining value or LTC value is equal to the remaining tape remaining value or LTC value stored by the memory key in step S10 when the memory key is input within 5 seconds when the FF key or the REW key is input ( S30) is performed.

After the operation S30 is performed, when a key related to a mechanism is input, an operation corresponding to the input key is performed, and then the operation of releasing the memory play function is performed (S50).

In the present invention as described above, the memory play function means that the memory key is input within a predetermined time during the input of the FF or REW key after storing the remaining tape value or the LTC value in the memory of the MICOM using the memory key. If the remaining tape value or the tape LTC value memorized by is the same as the currently displayed tape remaining value or tape LTC value, play it for a certain time so that the contents of the part can be known about the part where the memory key is input even during FF or REW. This is called a memory play function, and the present invention having such a function will be described in detail below.

First, in step S11, it is determined whether the deck state is a stop state. Because the present invention, when performing the operation of play, search, FF, REW, etc., the LTC value or the remaining tape value is memorized at an arbitrary tape position, and after playing for a predetermined time starting from the same position, the FF or REW operation is performed again. Because it is.

If it is determined in the step S11 that it is not the stop state, it is determined whether the memory key is input in the step S12. The memory key is a key for storing the LTC value or the tape remaining value when the memory key is input in the LTC or the tape remaining amount display state, and the LTC expresses the amount of the winding of the tape to date.

If it is determined in step S12 that the memory key is input, it is determined in step S13 whether the tape remaining amount display state is present. At this time, it may be determined whether the LTC value is displayed instead of the remaining tape amount.

If it is determined in the step S13 that the tape remaining amount display state, the flow advances to step S14 to store the remaining amount of tape remaining in the memory on the MICOM, and in step S13 determines that the tape remaining amount is not displayed. When the LTC value is displayed, the LTC value is stored in the memory on the MICOM in step S15. The reason for storing the LTC value in step S15 is determined as the LTC display state if the tape remaining amount display state is not in the step S13, since the present invention relates to a VTR or a VCR having a function of measuring the amount of winding of the tape. This is because if the tape remaining amount display state is not displayed in S13, the LTC value display state of the tape is obtained.

After performing the above steps S14 and S15, the remaining LTC values and the remaining tape levels are memorized in this step S14 and S15 in order to compare with the remaining LTC values and the remaining tape values (S16). .

On the other hand, if it is determined in step S12 that the memory key is not input, it is determined whether the FF key or the REW key is input in step S21. If it is determined in step S21 that the FF key or the REW key is input, it is determined whether the memory key is input within 5 seconds (step S22).

If the FF key or the REW key is not input in step S21 and S22 and the memory key is not entered within 5 seconds, the program is terminated. In step S22, the memory key is entered within 5 seconds after the input of the FF key or the REW key. It is determined whether it is input, but the time designated as 5 seconds can be changed. The memory key in step S12 and the memory key in step S22 use the same key, and step S10 is a portion for storing the remaining tape value or the LTC value by a memory key input. S30) is a routine for performing a memory play function based on the remaining tape value or the LTC value memorized in the step S10.

If it is determined in step S22 that the memory key is input within 5 seconds, it is determined whether the tape remaining amount display state is present (step S23). Also in this step S23, as in the step S13, it may be determined whether the LTC value display state is present.

If it is determined in the step S23 that the tape remaining amount display state is determined in step S24, it is determined whether the current tape remaining value is the same as the remaining tape value stored in the step S10, and in the step S23, the remaining tape display state is determined. If not, since the LTC value is displayed, it is determined whether the current LTC value is the same as the LTC value memorized in the step S10 in step S25.

If it is determined in step S24 and step S25 that the current tape remaining value or LTC value is the same as the tape remaining value or LTC value memorized in step S10, it is determined whether it is currently REW in step S26. In step S27, it is determined whether the execution bit is set in step S27. If it is determined in step S27 that the execution bit is set, the REW is continuously executed and then the execution bit is cleared (steps S28 and S29).

On the other hand, if it is determined in step S26 and step S27 that the execution bit is not currently in the REW and the execution bit is not set, FF or REW is performed after performing play for about 20 seconds in step S30, and the REW in this step S30. If it is, the execution bit is set in step S31. In the step S30, play is performed for about 20 seconds, but the playing time is changeable.

The steps S26 to S31 will be described in more detail with reference to FIGS. 3A and 3B.

FIG. 3 (a) shows that the FF is played for 20 seconds when the remaining tape or LTC value stored by the memory key is met in step S10. When (B) meets the part stored by the memory key during REW, FIG. After 20 seconds of play, the memory part is skipped to show that the memory part is not played repeatedly. That is, in the step S26 to S29, if the remaining tape or LTC value is met by the memory key in the step S10, the play is performed for about 20 seconds, and the REW is performed after the play is performed. Since the play is repeated to meet again, this part skips to prevent the play from being performed again after performing the first play. In other words, during REW, the execution bit is set by the program inside the MICOM, the memory part is skipped by the memory key, and the execution bit is automatically cleared. Then, the LTC value or the remaining tape value stored by the memory key is stored. After detecting that the part is skipped, the execution bit is set again.

After all, this part is to prevent the repeated play even if it meets the LTC value or the tape remaining value memory portion stored by the memory key at the time of REW.

On the other hand, after performing the steps (S29) and (S31), it is determined whether the mechanism-related key is input in step S51, and if the mechanism-related key is not input, the program is terminated, and if it is determined that the mechanism-related key is input After performing the function corresponding to the input key is terminated (S51). The mechanism-related keys may be FF, REW, stop, play, slow, still, and the like.

As described above, in the present invention, when a user plays a tape, performs a search, REW, or FF operation, the user inputs a memory key at an arbitrary tape position, stores the LTC value or the remaining tape amount in the memory of the microcomputer at the moment, and stores the FF. Alternatively, if a memory key is input within a predetermined time when the REW key is input, the play operation is executed for a predetermined time from the memory portion, and then the FF or REW operation is performed. All are cleared when the tape is ejected.

As described above, according to the present invention, since the tape remaining value or the LTC value is stored by using the memory key, the tape search is performed by directly performing the play for a predetermined time at the memory location without performing the stop function even when performing the FF or REW function. There is an effect to facilitate.

Claims (2)

A tape searching method of a video cassette recorder having a function of storing a remaining tape value or a linear time counter value of a tape, wherein the remaining tape value or a linear time counter value is stored by storing a tape remaining value or a linear time counter value when a memory key is entered while the current state is not stopped. Aligning the linear time counter values in a memorized order (S10); and when the memory key is input within a predetermined time when the FF or REW key is pressed while the current state is not the stop state, the current tape remaining value or linear time counter value In step S10, if the remaining tape value and the linear time counter value are the same as those of the memory key, performing the play function for a predetermined time (S30), and if a mechanism-related key is input, then performs an operation corresponding to the input key. Releasing the memory play function (S50). How to navigate in the tape during forward and rewind functions performed. The memory device of claim 1, wherein the step S30 includes: determining whether an FF key or a REW is input (S21); and if it is determined that the FF key or the REW key is input in the step S21, the memory key is entered within 5 seconds. Determining whether S has been input (S22), if it is determined in step S22 that the memory key is input, determining whether the remaining tape is displayed (S23), and in step S23 the remaining tape amount is displayed. If it is determined that the current tape remaining amount is equal to the remaining tape value stored in the step (S10) (S24), and if it is determined that the remaining tape amount is not displayed in the step (S23), the current linear time counter value is In step S25, it is determined whether it is equal to the linear time counter value memorized in step S10, and the remaining tape amount or the linear time counter value in steps S24 and S25 is higher. If it is determined in step S10 that the amount of remaining tape is equal to the linear time counter value (S26), it is determined whether it is currently REW, and if it is determined that it is REW in step S26, the memory key input part is repeatedly played. Determining whether or not the execution bit is set to prevent the phenomenon is set (S27), and if it is determined that the execution bit is set in the step (S27), continuing to perform the REW (S28), and performing the step (S28) Thereafter, if it is determined that the execution bit is not cleared and the execution bit is not set in steps S29 and S27 and S27, after performing play for 20 seconds, FF or REW is performed (S30). And setting the execution bit (S31) if REW is being performed in step (S30).