JPH0662359A - Video tape recorder - Google Patents

Abstract

PURPOSE:To enable video recording only a desirable program by improving the complication of a timer reservation setting operation, which is a conventional VTR problem. CONSTITUTION:A video tape recorder is provided with a video tape 1 where a storage medium is attached, which recordes the notice image of a broadcasting program and stores reservation information for setting the timer reservation of the broadcasting program and video recording position information of the notice image of the broadcasting program, an information reading means reading reservation information and video recording position information from the storage medium, an input means inputting propriety for setting timer reservation and a comparison arithmetic means comparing video recording position information read by the information reading means with tape position information detected by a tape position detecting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video tape recorder (hereinafter abbreviated as VTR) having a timer-reservation recording function, and particularly, the operability of timer-reservation setting is dramatically improved. To improve.

[0002]

2. Description of the Related Art In a conventional VTR, a timer-reserved recording is generally used as a recording means, and a recording channel, a recording start date, a recording start time, and a recording end time are set before the recording is started. Recordable video
If you insert a group and decide the recording start position, and finally turn on the timer-reserved recording switch, the channel automatically selected at the set start time will start recording, and will automatically start at the set end time. The recording is to be ended.

As a means for setting the timer-reservation,
Firstly, there is a key input operation, in which reservation setting information is displayed on the television screen and an item to be set is selected by the operation key to input reservation information. As a second means, there is a method of setting reservation information by a bar code, and the reservation setting contents are converted into a bar code and read by the bar code reader to set the reservation. As a third means, there is a method of recognizing the reservation information by voice, and the reservation information is inputted by voice in accordance with a voice guide in an interactive form.

[0004]

However, as a problem in setting the timer reservation by the above-mentioned conventional method, even if key input operation and bar code are complicated, and voice recognition is used. The voice recognition accuracy is not yet sufficient, and it is the current situation that it cannot be used especially by the elderly and younger age groups, and the program to be watched is often not recorded due to an incorrect timer-reservation setting.

As described above, the timer-reserved recording is an essential function for the VTR, but is the most difficult function to use.

Further, since the contents of the program are not clear, it may be necessary to make a recording for the time being. When it is desired to make another recording, a different video tape is often prepared and recorded. Was reducing the use efficiency of.

The present invention solves the above problems, and an object of the present invention is to provide a video tape recorder capable of improving the drawback of complexity of the timer-reservation setting operation.

[0008]

In order to solve the above-mentioned problems, a VTR of the present invention records a preview video of a broadcast program, and reserve information for timer-reserving the broadcast program and a preview video of the broadcast program. Information reading means for reading reservation information and recording position information from the storage medium from a video tape attached with a recording medium storing the recording position information, input means for inputting whether or not timer-reservation setting is possible, and tape. A tape position detecting means for detecting the winding position of the tape, and a comparison calculating means for comparing the recording position information read by the information reading means with the tape position information detected by the tape position detecting means. When the advance notice image of the video tape is played back and the timer reservation setting is input by the input means, the tape position information detected by the tape position detection means and the information Compared by the comparison operation means and recording position information of preview video of the program read out from the read means, identifies which program preview video, the timer for that video - reads the reservation information by the information reading means,
Timer-Allows setting of reservation.

Further, the present invention is provided with a clock means, and when the input for inputting the timer-reservation setting is made by the input means, the timer-reservation setting is not performed if it is past the current time.

[0010]

The VTR of the present invention has the above-mentioned configuration, and in order to improve the drawback of the complexity of the timer-reservation setting operation, which has been the biggest problem of the VTR in the past, the program to be recorded by watching the preview image of the broadcast schedule. If there is, it can be selected, the timer-reservation setting information can be acquired by comparing the tape position information, and the timer-reservation setting can be performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a video tape recorder according to the present invention. Timer reservation information attached to a video tape 1 in which a magnetic tape 13 is stored and broadcast programs. A storage medium such as a non-volatile IC memory (hereinafter abbreviated as IC memory) 2 for storing the recording position information of the advance notice video, a memory connection terminal 3 for reading information from the IC memory 2, and at the time of reproduction or fast-forwarding. Magnetic tape
A supply side reel (hereinafter abbreviated as S reel) 4 for sending out the tape 13, and a winding side reel (hereinafter abbreviated as T reel) for winding the magnetic tape 13 at the time of rewinding. 5),
Timer-on-screen display circuit (hereinafter abbreviated as OSD circuit) 9 for displaying reservation information and the like on monitor-11, video signal processing circuit 10, and timer-
A key input device 12 for inputting whether or not to set a reservation, a VTR operation, etc., and a micro computer for controlling the above system.
And the data 8 are included in the whole.

The operation of the VTR constructed as above will be described in detail below. When the video tape 1 provided with the IC memory 2 is inserted, the memory connection terminal 3 is I
The timer is connected to the C memory 2 so that the reservation information and the recording position information of the preview video of the broadcast program can be read. Then, the preview image of the broadcast program is reproduced on the monitor 11 by the video signal processing circuit 10, and a message indicating whether or not the timer-reservation can be set for the program is displayed on the monitor 11 as shown in FIG.
The video signal processing circuit 10 makes the display on the monitor 11 via the D circuit 9. Next, when the message for permitting or disallowing the timer-reservation setting is input by the key input device 12 to perform the timer-reservation setting, the VT
The R mode is stopped, the microcomputer 8 detects the present tape remaining amount, and the advance notice image of each program recorded in the video tape stored in the IC memory 2 is started. The tape remaining amount at the position is input from the memory connection terminal 3, the current tape remaining amount is compared with the tape remaining amount at the start position, and the notice image reproduced on the monitor 11 is identified. To do. The tape remaining amount information is, for example, by measuring the rotation cycle of the S reel 4 and the rotation cycle of the T reel 5, for example, the tape remaining time from the recording start position to the end of the tape. That is.

FIG. 3 is an enlarged view of the portion of the video tape 1 shown in FIG.
FIG.
An embodiment of the method for detecting the remaining tape time will be described in detail.
To do. In FIG. 3, Vt is the traveling speed of the magnetic tape 13.
[M / s], r is the hub diameter of S reel 4 and T reel 5
[M], Rs and Rt are S reel 4 and T reel, respectively.
Radius [m] to the outer circumference of the magnetic tape wrapped around 5.
Ss and St are wrapped around S reel and T reel, respectively.
Area including magnetic tape and reel hub ² ],
ωs and ωt are the rotational angular velocities of the S reel and T reel, respectively.
The degree is [rad / s].

The angular velocities ωs and ωt can be obtained by measuring the cycle of the rotation speed detection signal detected by the S reel rotation speed detector 6 and the T reel rotation speed detector 7. Therefore, the radii Rs and Rt to the outer circumference of the magnetic tape wound around the S reel 4 and the T reel 5 are obtained by the following equations.

[0016]

[Equation 1]

[0017]

[Equation 2]

Therefore, this corresponds to the length of the magnetic tape wound on the reel disposed inside the video tape,
The total area S of the tape including the reel hub is given by the following equation.

[0019]

[Equation 3]

By the way, there are several kinds of lengths of the magnetic tape wound around the video tape 1. For example, in the above VHS standard, 120 minutes tape, 90 minutes tape, 60 minutes tape.
There are minute tape, 30 minute tape, etc. Therefore, for each video tape, the total tape area S ₁₂₀ , S
_{If 90} , S ₆₀ and S ₃₀ are obtained, it is possible to detect the number of minutes of the video tape currently inserted in the VTR. Based on the result, the area Sso including the reel hub on the S reel side is obtained again. If, for example, the detection result is 120 minutes tape, Sso is expressed by the following equation.

[0021]

[Equation 4]

Then, the net tape area excluding the area of the reel hub is divided by the tape thickness τ [m], and the tape remaining amount L [m] is divided by the tape speed. Thus, the remaining time T [s] can be calculated. That is,

[0023]

[Equation 5]

[0024]

[Equation 6]

The tape remaining amount information is obtained by calculating. FIG. 4 is a map diagram of the remaining amount information of the start position of the advance notice video of the program stored in the IC memory 2, the timer-reservation content information, and the title information of the program, where the horizontal axis represents the lower address (4 bits). ), The vertical axis indicates the upper address (5
Bit) represents the space. And 4 in FIG.
As shown by 1, 42, 43, and 44, they are stored in the order in which they are recorded in the video tape 1, and the remaining amount information at the start position of the preview image of the program is 2 bytes, the recording channel is 1 byte, and the recording is started. The date is 3 bytes, the recording start time is 2 bytes, the recording end time is 2 bytes, and the program title is 6 bytes. A total of 16 bytes is included in the advance notice information of one program. In the case of FIG. 4, the total memory capacity is 4
It is K (4096) bits, and it is possible to store up to 32 pieces of advance notice information.

FIG. 5 shows that the microcomputer 8 has the
FIG. 4 is a flowchart showing a method of reading timer-reservation information related to a preview image recognized by comparing remaining amount information from the IC memory 2 through the memory connection terminal 3 and will be described in detail using this. .

The first processing block 51 is the IC memory 2
The address at which the tape remaining amount information of the start position of the preview video of one program to be read out and the reservation setting content, that is, the upper address is initialized. Next, in processing block 52, the remaining tape amount is detected to detect the current remaining tape amount. In the processing block 53, information indicating the tape remaining amount at the start position of the preview video of the program recorded in the video tape 1 from the IC memory 2 is read from the memory connection terminal 3 by the above-mentioned upper address. In the branch 54, the current remaining tape amount detected in the processing block 52 and the remaining tape amount read in the processing block 53 are compared in size, and the result indicates that the current remaining tape amount is the processing block 53. If it is smaller than the tape remaining amount read in step 1, that is, if the current tape remaining amount is present from the tape remaining amount at the start position of the preview video of the read program to the end, the processing block 55 is entered. After the shift, the upper address is updated, that is, the upper address in which the remaining amount information of the preview video of the next program is stored is obtained, and the process returns to the processing block 53. If the tape remaining amount read in the processing block 53 is smaller than the current tape remaining amount as a result of the comparison in the branch 54, that is, the tape at the start position of the read-out preview video of the program is read. If there is a current tape remaining amount from the beginning of the remaining amount, the process proceeds to processing block 56, and the preview image of the selected program is the preview image one program before the preview image of the program just read. Then, the timer-reservation information regarding the video can be read from the IC memory 2 through the memory connection terminal 3.

The timer reservation information of the preview video of the read program is displayed on the monitor 11 by the video signal processing circuit 10 via the OSD circuit 9 as shown in FIG.
Then, when the user confirms the timer-reservation information and inputs to set the timer-reservation with the key input device 12, the timer-reservation setting contents are sent to the timer-microcomputer (not shown), The preview image of the next broadcast program is reproduced on the monitor 11 by the video signal processing circuit 10. If the timer reservation information is confirmed and the key input device 12 inputs so as not to set the timer reservation, the timer reservation is canceled and the preview image of the next broadcast program is displayed in the video signal processing circuit. It is reproduced by 10 on the monitor-11.

Further, if the timer-reservation information of the read-out preview video of the program is compared with the current time and the program has already been broadcast, the OSD circuit displays a warning message as shown in FIG. The video signal processing circuit 10 causes the video signal processing circuit 10 to display the video on the monitor 11 and cancels the timer reservation setting so that the preview video of the next broadcast program is displayed.
It is reproduced on the monitor-11 by 0.

Timer-When all reservations have been set,
If you take out the video tape 1, insert a video tape that allows timer-scheduled recording, decide the recording start position, and turn on the timer-scheduled recording switch, the timer-microcomputer will automatically start at the start time. The recording channel is tuned to and the recording is started, and when the end time comes, the recording is automatically ended.

[0031]

As described above, the video tape recorder according to the present invention improves the complexity of the timer-reservation setting operation, which has been a problem of the conventional video tape recorder.
Since you can understand the contents of the program, you can record only the programs you really want.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a video tape recorder according to the present invention.

FIG. 2 is a schematic diagram showing a monitor-screen display example of the same embodiment.

FIG. 3 is an enlarged view of a video tape portion of the embodiment.

FIG. 4 is a map diagram of information stored in the IC memory of the same embodiment.

FIG. 5 is a flowchart of a method of reading timer reservation information from the IC memory of the same embodiment.

FIG. 6 is a schematic diagram showing a monitor-screen display example of the embodiment.

FIG. 7 is a schematic diagram showing a monitor-screen display example of the same embodiment.

[Explanation of symbols]

 1 Video Tape 2 Storage Medium 3 Memory Connection Terminal 4 Supply Side Reel 5 Winding Side Reel 6 Supply Side Reel Rotation Speed Detector 7 Winding Side Reel Rotation Speed Detector 8 Microcomputer 9 on-screen display circuit 10 video signal processing circuit 11 monitor 12 key input device 13 magnetic tape

Claims (2)

[Claims] 1. A video tape in which a preview video of a broadcast program is recorded, and a recording medium is attached to which reservation information for timer-scheduling the broadcast program and recording position information of the preview video of the broadcast program are stored. Information reading means for reading reservation information and recording position information from the storage medium, input means for inputting whether or not timer-reservation setting is possible, and tape position detecting means for detecting reel winding position of tape When,
The recording position information read by the information reading unit and the tape position information detected by the tape position detecting unit are provided for comparison, and the preview image of the video tape is being reproduced. To the timer by the input means
When input is made to make a reservation setting, the tape position information detected by the tape position detecting means and the recording position information of the preview video of the program read by the information reading means are processed by the comparison calculation means. The video tape recorder is characterized in that the program is configured so that the program can be compared to identify the preview image of the program, the timer-reservation information relating to the image can be read by the information reading means, and the timer-reservation can be set. . 2. The method according to claim 1, further comprising clock means, wherein when the timer-reservation setting is input to perform the timer-reservation setting, the timer-reservation setting is not performed if the current time has passed. Video tape recorder.