JP3033351B2 - Video tape recorder - Google Patents

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-recording function, and in particular, to greatly improve the operability of timer-reservation setting. It is to improve.

[0002]

2. Description of the Related Art In a conventional VTR, timer-reserved recording is generally used as a means for recording, and a recording channel, a recording start date, a recording start time, and a recording end time are set before recording is started. Videotape that can be recorded
If you insert a loop and determine the recording start position, and lastly turn on the timer-reservation recording switch, the channel is automatically selected at the set start time and recording is started, and the recording starts automatically at the set end time. This is to end the recording.

As means for setting the timer reservation,
First, there is a key input operation, in which reservation setting information is displayed on a television screen, an item to be set is selected by an operation key, and the reservation information is input. As a second means, there is a method of setting reservation information by a bar code. The reservation setting contents are converted into a bar code, and a reservation is set by reading with a bar code reader. As a third means, there is a method in which the reservation information is recognized by voice, and the reservation information is input by voice in accordance with voice guidance in an interactive manner.

[0004]

However, when the timer reservation is set by the above-mentioned conventional method, the problems associated with the key input operation, the complexity of the bar code, and the use of voice recognition are disadvantageous. At present, the voice recognition accuracy is not sufficient, and it cannot be used especially by elderly people or young people, and the program to be watched is often not recorded due to an incorrect timer-reservation setting.

[0005] As described above, timer-reserved recording is an indispensable function for a VTR, but is the most difficult function to use.

[0006] Also, since the contents of the program are not clear, recording may be performed temporarily. When another recording is desired, a video tape is often prepared and recorded. Use efficiency was reduced.

An object of the present invention is to provide a video tape recorder capable of solving the above-mentioned problems and improving the disadvantage of the complicated timer-reservation setting operation.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a VTR according to the present invention records a preview image of a broadcast program, reserves information for setting a timer-reservation of the broadcast program and a preview image of the broadcast program. Information reading means for reading reservation information and recording position information from a video tape on which a storage medium storing the recording position information is stored, input means for inputting whether timer reservation can be set, and tape. Tape position detecting means for detecting the winding position of the tape, and 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. In the case where an input is made to perform timer reservation setting by the input means during reproduction of the video tape advance notice video, the tape position information detected by the tape position detecting means and the information are stored. 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-reservation can be set.

[0009] Further, there is provided a clock means, wherein when the input means inputs the setting of timer-reservation, if the current time has passed, the timer-reservation setting is not performed.

[0010]

The VTR according to the present invention has the above-mentioned configuration, and in order to improve the disadvantage of the complicated timer-reservation setting operation, which has been the biggest problem of the VTR, a program to be recorded by watching a preview video to be broadcast. If there is, the timer-reservation setting information is obtained by comparing the position information of the tape and the timer-reservation setting can be performed.

[0011]

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. In FIG. 1, timer reservation information and a broadcast program attached to a video tape 1 in which a magnetic tape 13 is stored are shown. A storage medium for storing the recording position information of the preview video, for example, a non-volatile IC memory (hereinafter abbreviated as IC memory) 2, a memory connection terminal 3 for reading information from the IC memory 2, Magnetic tape
A supply reel (hereinafter abbreviated as S-reel) 4 for sending out the tape 13 and a take-up reel (hereinafter abbreviated as T-reel) for winding the magnetic tape 13 during rewinding. 5)
An on-screen display circuit (hereinafter abbreviated as an OSD circuit) 9 for displaying timer reservation information and the like on a monitor 11; a video signal processing circuit 10;
A key input device 12 for inputting whether a reservation can be set or operating a VTR, and a microcomputer for controlling the above system
The whole is constituted by the data 8.

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

FIG. 3 is an enlarged view of a portion of the video tape 1 shown in FIG.
FIG.
One embodiment of a tape remaining time detecting method will be described in detail.
I 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 periphery of the magnetic tape wound around 5,
Ss and St are wound around S-reel and T-reel, respectively.
Area [m] including the magnetic tape and reel hub ^Two ],
ωs and ωt are the rotational angular velocities of S-reel and T-reel, respectively.
Degree [rad / s].

The angular velocities ωs and ωt can be obtained by measuring the period of the rotational speed detection signal detected by the S-reel rotational speed detector 6 and the T-reel rotational 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 can be obtained by the following equations.

[0016]

(Equation 1)

[0017]

(Equation 2)

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

[0019]

(Equation 3)

By the way, there are several types of lengths of the magnetic tape wound on the video tape 1. For example, in the above-mentioned VHS standard, a 120-minute tape, a 90-minute tape and a 60-minute tape are used.
Minute tape and 30 minute tape. Therefore, for each video tape, the total tape area S ₁₂₀ , S
_90, S _60, if seeking S ₃₀ are inserted now VTR video tape - flop many minutes tape - it can detect whether the flop. Based on the result, the area Sso including the reel hub on the S reel side is obtained again. For example, if the detection result is a 120-minute tape, Sso is expressed by the following equation.

[0021]

(Equation 4)

Then, by dividing the net tape area excluding the area of the reel hub by the tape thickness τ [m], the remaining tape 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 remaining tape information is obtained by calculating the following equation. FIG. 4 is a map diagram of the remaining amount information of the start position of the preview video of the program stored in the IC memory 2, the timer-reservation content information, and the program title information. The horizontal axis indicates the lower address (4 bits). ), The vertical axis represents the upper address (5
Bit) represents that space. And 4 in FIG.
As shown by 1, 42, 43, and 44, they are stored in the order in which they are recorded on the video tape 1, 2 bytes are recorded in the remaining amount information of the start position of the preview video of the program, 1 byte is recorded in the recording channel, and recording is started. It uses 3 bytes for the date, 2 bytes for the recording start time, 2 bytes for the recording end time, and 6 bytes for the title of the program. The total is 16 bytes for the notice information of one program. In the case of FIG. 4, the total memory capacity is 4
It is K (4096) bits and can store up to 32 pieces of notice information of up to 32 programs.

FIG. 5 shows that the microcomputer 8 has a
FIG. 10 is a flowchart showing a method of reading timer reservation information relating to a notice video recognized by comparing remaining amount information from the IC memory 2 from the memory connection terminal 3, which will be described in detail with reference to FIG. .

The first processing block 51 is the IC memory 2
The address in which the remaining tape information and the contents of the reservation setting at the start position of the preview video of one program to be read out, that is, the upper address is initialized. Next, in a processing block 52, the remaining amount of tape is detected to detect the current remaining amount of tape. In the processing block 53, the information indicating the tape remaining amount at the start position of the preview video of the program recorded on the video tape 1 by the upper address from the IC memory 2 is read from the memory connection terminal 3. In the branch 54, a comparison is made between the current tape remaining amount detected in the processing block 52 and the tape remaining amount read out in the processing block 53, and based on the result, the current tape remaining amount is determined in the processing block 53. If the remaining tape amount is smaller than the tape remaining amount read out at step (5), that is, if the current tape remaining amount is beyond the tape remaining amount at the start position of the readout notice video of the read program, the processing block 55 The process moves to update the upper address, that is, obtains the upper address in which the remaining amount information of the preview video of the next program is stored, and returns to the processing block 53. Also, as a result of the magnitude comparison in the branch 54, if the remaining amount of tape read out in the processing block 53 is smaller than the current remaining amount of tape, that is, the tape of the start position of the readout preview video of the read program If the current tape remaining amount is earlier than the remaining amount, the processing shifts to processing block 56, where the preview image of the selected program is set as the preview image one program before the preview image of the program just read out. The timer-reservation information relating to the video can be read from the IC memory 2 through the memory connection terminal 3.

The timer-reservation information of the read preview image of the program is displayed on the monitor 11 by the video signal processing circuit 10 via the OSD circuit 9 as shown in FIG.
Then, the user confirms the timer-reservation information and, when inputting to set the timer-reservation by the key input device 12, sends the timer-reservation setting contents 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 sent to the video signal processing circuit. 10 reproduces the image on the monitor 11.

Further, if the timer-reservation information of the read preview image of the program is compared with the current time and the program has already been broadcast, a warning message as shown in FIG. 9, the video signal processing circuit 10 causes the video signal processing circuit 10 to display the image on the monitor 11, cancel the setting of the timer reservation, and display the preview image of the next broadcast program in the video signal processing circuit 1.
0 is reproduced on the monitor-11.

When all timer-reservation settings are completed,
When the video tape 1 is taken out, a video tape capable of timer-programmed recording is inserted, the recording start position is determined, and the timer-programmed recording switch is turned on. Recording is started by selecting a recording channel, and the recording is automatically terminated when the end time comes.

[0031]

As described above, the video tape recorder of the present invention improves the complexity of the timer reservation setting operation which has been a problem of the conventional video tape recorder, and
Since the contents of the program can be understood, it is possible to record only the program that one really wants.

[Brief description of the 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 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 an IC memory of the embodiment.

FIG. 5 is a flowchart of a method for reading timer reservation information from an IC memory according to the embodiment;

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

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 video tape 2 storage medium 3 memory connection terminal 4 supply reel 5 take-up reel 6 supply reel rotation speed detector 7 take-up reel rotation speed detector 8 microcomputer Reference Signs List 9 on-screen display circuit 10 video signal processing circuit 11 monitor 12 key input device 13 magnetic tape

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code Fig11B 27/17 C

Claims (2)

(57) [Claims] An advance video of a broadcast program is recorded, and a video tape attached with a storage medium storing reservation information for setting a timer reservation of the broadcast program and recording position information of the advance video of the broadcast program is recorded. Information reading means for reading reservation information and recording position information from the storage medium; input means for inputting whether or not timer reservation can be set; and tape position detecting means for detecting a reel winding position of the tape. When,
Comparing 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, wherein a preview image of the video tape is being reproduced. The timer is operated by the input means.
When the input is made to make a reservation setting, the comparison operation means compares the tape position information detected by the tape position detection means with the recording position information of the preview video of the program read by the information reading means. A video tape recorder which is configured to compare and identify which program is a preview video, read timer-reservation information relating to the video by the information reading means, and set a timer-reservation. . 2. The apparatus according to claim 1, further comprising a clock means, wherein when a timer-reservation setting is input, if the current time has passed, the timer-reservation setting is not performed. Video tape recorder.