JPH0661142B2 - How to set recording prohibited area of video tape - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of setting a recording prohibited area of a video tape for use in a consumer-use or business-use video cassette recorder (hereinafter referred to as VCR) capable of recording. In particular, the present invention relates to a video tape recording prohibited area setting method for recording a video signal only in a portion excluding a specific area when recording by using the count value of the microcomputer and the display unit.

2. Description of the Related Art In recent years, consumer VCRs or business VCRs have become capable of recording a plurality of programs on one video tape by becoming a recording type for a long time.
Some of the programs on this videotape do not need to be played once or twice,
There are also programs that want to save for a long time, and if the user wants to record a new program on a videotape on which an existing program has been recorded, it is necessary to prevent the new program from being recorded in the part that has the program to be saved. I won't.

Problems of the prior art Therefore, when trying to prevent the data in a specific part of the data recorded on the recorded video tape from being erased, the user naturally switches the mode of the system and the above-mentioned specific part is not recorded. Since it had to be prevented from being done, the work was very troublesome and there was a problem that the program that was trying to save was erased by mistake.

In particular, recently, the adoption of a microcomputer has led to the addition of an automatic reservation recording function to the VCR, and a video tape containing a program to be saved when the user intends to record while he / she is away using such a function. It is normal to use a videotape or a new videotape that contains a program that does not need to be stored separately. Therefore, there is a problem in that the video tape cannot be used economically, the required amount of the video tape is large, and the required space of the storage space is large.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to allow a user to set a recording prohibited area on an arbitrary portion of a video tape by key input and automatically exclude this area by control of a microcomputer during recording. It is to provide a method capable of recording a video signal only.

Means for Solving the Problems To achieve the above object, the present invention provides a video recording method for a video cassette recorder including a microcomputer, a key input module, a servo control unit, and a display unit. If there is an input by judging the presence or absence, I want to save the function currently being performed by the video and rewind and initialize the count value of the display until the start sensor detects the tape start position, then I want to prohibit recording When the start point of the area is reached, the forward picture search is performed, the first step of determining whether the recording prohibition key is input by moving to the still mode or the reproduction mode, and the input of the recording prohibition key is constant in the first step. If there is not enough time, the saved video function will be re-executed, and conversely, if there is a key input, the display counter The second step of detecting the input of the recording prohibition key at the end point of the area where recording is prohibited and the recording prohibition key being input in the second step Save the count value of the display corresponding to the end point, set the recording prohibition setting completion flag, perform the rewind, initialize the count value, and perform the saved video function again From the third step When the recording prohibition area is set in the recording prohibition area setting step, if the prohibition cancel key is input, the recording prohibition setting completion flag is reset and the number of times the recording prohibition key is input is initialized. , If the recording command is input while the flag is set without inputting the prohibition release key, rewind and count until the start sensor operates. After initializing, the recording is started, and when the start specified value of the saved recording prohibited area and the count value of the display unit are the same, the recording is interrupted in the first step, and the recording is interrupted in the first step. After that, if the start point and the end point of the recording prohibited area are the same, the power is turned off by switching to the stop mode, and if the two points are not the same, the mode is switched to the fast forward or forward picture search mode. After that, a recording process with a prohibited area, which includes a second step of starting recording from a point where the count value of the display unit and the value of the saved end point coincide with each other;

Embodiment Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings through preferred embodiments.

FIG. 1 shows the most preferable system for carrying out the present invention. A key input module 1 for outputting data sent from a remote controller or a local keyboard (not shown) to the microcomputer 2 as an input. And a display unit 3 such as a display panel or an OSD (on-screen display) for displaying a count value according to the running of the video tape under the control of the microcomputer 2 operated by the data output from the key input module 1.
And a servo control unit 4 for controlling a video tape drive system (not shown) according to the output signal of the microcomputer 2.

2 is a microcomputer 2 included in the system of FIG.
Is a flow chart for operating according to the present invention.
Figures (A) and (B) show the recording prohibited area setting process, and Figures 2 (C) and (D) show the prohibited area recording process.

First, the process of setting the recording prohibited area will be described.

If the user mounts a video tape such as a cassette on the deck of the VCR and selects an appropriate mode as shown in 1a of FIG. 2 (A), the video of the current state is selected according to the selected mode as shown in 1b. Carry out a function.

The microcomputer 2 while performing the video function of the current state in 1b.
Continuously discriminates the input of the recording prohibition key like 1c,
If there is no input of the recording prohibition key in 1c, the current state of 1b is continued, and if there is a key input, 1d is performed. That is, after the current operation mode and operation state of the VCR is stored in the memory of the microcomputer 2 at 1d, a value increased from 0 to 1 is stored in the recording prohibit key input count storage register (not shown). 1e is performed.

In 1e, after displaying the count value on the screen of the display unit 3 to make the user confirm the current position of the tape, the rewind mode is performed because the remaining amount of the tape remains in the take-up direction. Rewind to the start point of the video tape.

In 1d, the microcomputer 2 determines whether the start sensor for detecting the start position of the video tape is activated (whether the output is "high"), and if it is not activated, 1e is further executed and activated. In this case, 1 g is performed after the rewinding is completed to the start position of the tape.

At 1 g, the operation mode of the VCR is shifted to the stop mode, the count value of the display unit 3 is initialized to 0000, and then
Perform 1h.

At 1h, a forward picture search is performed to the recording prohibited area, and the user searches to the start point of the desired recording prohibited area. At this time, the display unit 3 displays the count value due to the transfer of the video tape.

In 1i, the user determines whether it is the start point of the recording prohibition area, and if it is not the start point, the search operation of 1h is performed continuously. After switching to the mode, step 2a in FIG. 2 (B) is performed.

Here, the user determines again whether or not the recording prohibited area can be set while observing the image displayed on the TV screen, and determines the input of the recording prohibited key.

In 2a, the microcomputer 2 checks whether there is an input of this recording prohibition key.
To judge. Here, if the recording prohibition key is not input, it is determined in 2b whether a predetermined time has passed, and if the predetermined time has not passed, 2a is further performed. If the predetermined time has elapsed, that is, if the recording prohibition key has not been input for the predetermined time, 2c is performed.

In 2c, the number of times of input of the recording prohibition key is initialized and transferred to the previous state, and the above 1b is further performed.

If it is the input of the recording prohibition key in 2a, the number of times of inputting the recording prohibition key stored in the register is incremented by 2 and the display unit 3
The current count value of 1 is saved in the position of the start RAM of the microcomputer 2 and 2e is executed.

In 2e, it returns to the search state.

In 2f, the user determines whether the video tape reaches the end point of the area in order to prohibit recording while looking at the displayed TV screen. If there is no end point, the user further executes 2e and continues the search.

If the end point is 2f, the user can use
An attempt is made to switch the CR to the stop mode or the still mode to stop the transfer of the video tape.

Here, the user finally decides whether or not to set the recording prohibition area, and if the user inputs the recording prohibition key again, the microcomputer 2 judges whether or not the input is made in 2h, and the recording prohibition key If the predetermined time has not elapsed, it is determined whether the predetermined time has elapsed. If the predetermined time has not elapsed, 2h is further performed, and if the predetermined time has elapsed, 2j is performed.

In 2j, after the number of times of input of the recording prohibition key is initialized and transferred to the initial state, it is returned to 1b and the video function in the previous state saved in 1d is continuously performed. That is, in order to set the end point of the recording prohibition area, if the input of the third recording prohibition key is not input for a predetermined time, the input of the preceding first and second recording prohibition keys is ignored, and the recording prohibition is performed. The region setting process does not proceed further, and the VCR is returned to the initial state.

When the third input of the recording prohibition key is judged in 2h,
At 2k, the current count value of the display unit 3 is saved in the position of the end RAM and the number of times the recording prohibition key is input is initialized. After the initialization as described above, the recording prohibition setting completion flag is set, the tape is rewound to the start position, the count value of the display unit 3 is initialized to 0000, and the setting process of the recording prohibition area is completed.

If you want to set a certain point in the middle of the video tape as the start point of the recording prohibited area and the end point of the video tape as the end point of the recording prohibited area, the following recording operation must be completed at the start point. Is desirable. Therefore, in the present invention, therefore, after the setting of the start point of the recording prohibited area is completed and before the search operation of 2c is started, the set operation of the stop mode or the still mode of 2g is performed to perform the recording. The third recording prohibition key for setting the end point of the prohibited area is to be input. In this case, the count value at the start point and the count value at the end point in the recording prohibited area are the same.

Next, a process of recording a new program with a prohibited area on the tape with the above-mentioned recording prohibited area set will be described with reference to FIGS. 2 (C) and (D).

If the user mounts a video tape such as a cassette on the deck portion of the set in 1a of FIG. 2 (C), the video function of the current state is performed in 1b.

At this time, if the user wants to cancel the setting state of the recording prohibition area, the prohibition cancellation key on the remote control or the local keyboard can be input, and the microcomputer 2 determines at 3c whether or not the prohibition cancellation key is input. To do.

If the prohibition release key is not input in 3c, 3e is performed,
If it is input, the recording prohibition setting completion flag is reset in 3d to initialize the number of times the recording prohibition key is input, and then 3e.
Carry out.

In 3e, the microcomputer 2 judges whether or not the recording prohibition setting completion flag is set, and if it is not set, the above 1
Returning to step b, the video function in the current state is further performed. On the other hand, if the recording prohibition setting completion flag is set, step 3f is performed.

At 3f, the microcomputer 2 judges whether or not the recording status register for storing the presence or absence of the recording command is set, and if it is not set, it returns to the above 1b to further perform the current function, and when it is set, 3g is performed.

3g rewinds the tape until the start sensor operates and initializes the count value of the display unit 3 to 0000 and VCR at 3h.
When the recording starts, the display unit 3 counts the tape transfer amount.

In 3i, the microcomputer 2 judges whether the value of the start point of the recording prohibited area saved in the memory of the microcomputer 2 and the count value of the display unit 3 are the same, and if they are not the same, the recording operation is further performed, On the contrary, the same
Perform 3j.

In 3j, recording is interrupted, and 4a in FIG. 2 (D) is performed,
At 4a, the microcomputer 2 determines whether the start point and the end point are the same, and if they are the same, 4b is executed.

In 4b, the operation is performed as when the end sensor during recording is operated to shift to the stop mode, and then the power is turned off in 4c, and the process ends.

On the contrary, if the start point and the end point are not the same in 4a, 4d is executed, and in 4d, the mode is switched to the fast forward or forward picture search mode and 4e is executed.

In 4e, the microcomputer 2 judges whether the value of the saved end point and the count value match, and if there is no match, the above 4
Returning to d, the search is further performed, and if they match, 4f is performed.

In 4f, the mode is further changed to record for a desired time, and then the process returns to 1b to return to the original video function in the current state.

EFFECTS OF THE INVENTION In the present invention, the recording prohibited area is set under the control of the microcomputer as described above, and only the portion excluding the recording prohibited area can be recorded. It should be noted that since the video tape can be recorded in the entire remaining portion excluding only the prohibited area, the waste of the video tape can be prevented. Therefore, the present invention has a merit that the function of the product can be greatly improved especially in a VCR having a long-time recording type or an automatic reservation recording function during absence.

[Brief description of drawings]

FIG. 1 is a schematic view of a system most suitable for carrying out the present invention, FIG. 2 is an operation flow chart of a microcomputer in the system of FIG. 1, and FIGS. 2 (A) and (B) are recordings. The prohibited area setting process, and FIGS. 2C and 2D are diagrams showing the prohibited area recording process. 1 ... Key input module, 2 ... Microcomputer, 3 ... Display unit,
4 ... Servo control unit.

Claims (1)

[Claims] 1. A video recording method for a video cassette recorder comprising a microcomputer, a key input module, a servo control unit, and a display unit, wherein the video is recorded when the microcomputer determines whether or not a recording prohibition key is input. Rewind and initialize the count value on the display until the start sensor detects the tape start position, and then perform the forward picture search when the start point of the area where recording is prohibited is reached. The first step of determining whether or not the recording prohibition key is input by transitioning to the still mode or the playback mode, and if the recording prohibition key is not input for a certain period of time in the first step, the function of the saved video is restored again. If there is a key input on the contrary, save the count value on the display and return to the search state to prohibit recording. The second step of detecting the input of the recording prohibition key at the end point of the area, and the input of the recording prohibition key in the second step, save the count value of the display unit corresponding to the end point of the recording prohibition area, After setting a recording prohibition setting completion flag, a recording prohibition area setting process including a third step of performing rewind to initialize the count value and perform the function of the saved video again; If the prohibition release key is input when the recording prohibition area is set in the process, the recording prohibition setting completion flag is reset and the number of times the recording prohibition key is input is initialized. When the recording command is input while is set, the recording is rewound until the start sensor is activated and the count value is initialized, and then recording is started and saved. If the start specified value of the recording prohibited area and the count value of the display are the same, the first step of interrupting the recording, and after the recording is interrupted in the first step, the start point and the end point of the recording prohibited area are If they are the same, the mode is shifted to the stop mode and the power is turned off. If the two points are not the same, the mode is shifted to the fast forward or forward picture search mode, then the count value on the display and the saved end are displayed. A recording prohibited area setting method for a video tape, comprising: a recording step with a prohibited area, which comprises a second step of starting recording from the point where the values of the points match.