JPH0520754A - Timer operation controlling device - Google Patents

Abstract

PURPOSE:To prevent a video recording mistake of a reserved program by automatically deciding the shortage of the remaining space of a tape necessary for the reserved program and switching a recording speed when the video recording is operated by a timer reservation. CONSTITUTION:Timing information for operating a timer is stored by a timer reservation timing storing means 953. Information about the remaining space of the set tape is stored by information storing means 915 for every different cassette. A timing for starting the timer operation is recognized by a timer mode and cassette discriuminating means 950 using the above-mentioned timing information and information about a present time. When the timing for starting the timer operation is detected, whether the remaining tape space is enough for the time necessary for recording a program or not is decided by a recording space detecting means 960 and a system controlling means 900 and when the space runs short, a tape travelling speed mode is switched and the mode of an optimum speed is set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timer operation management device which is incorporated in, for example, a video tape recorder (hereinafter referred to as VTR) and manages a timer operation when there is an automatic exchange function for a plurality of cassettes.

[0002]

2. Description of the Related Art In recent years, many television broadcast programs have been available for a long time. With the start of satellite broadcasting, the number of programs whose broadcasting hours extend to midnight is increasing. Therefore,
The VTR's recording system is also shifting to allow recording during absence and long-term recording.

[0003]

However, the current VTR has a limited recording capacity because it has a structure in which only one tape cassette is loaded for long-time recording or absence recording. .. Further, there are restrictions on the production of a large-capacity cassette tape because there is a standard for the size of the cassette. In order to solve this, there is a proposal to configure the VTR so that a plurality of cassettes can be loaded.

However, when a plurality of cassettes can be loaded, a means for connecting various functions of the VTR and correspondence of each cassette is required. For example, when timer recording is performed with a plurality of cassettes set in the VTR, the user recognizes that there is sufficient recording margin, so the timer reservation is set to be larger than the tape recording margin. It is possible that it will end up. In such cases,
It will cause a recording error in the last part of the program. Alternatively, although a plurality of programs are reserved, it is conceivable that the remaining tape amount is already insufficient when the reservation time for the last program is reached.

Therefore, according to the present invention, when recording is performed by timer reservation, when the remaining tape amount required for the reserved program is insufficient, it is automatically judged and the recording speed is switched to record the reserved program. An object is to provide a timer operation management device capable of preventing mistakes.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided cassette transfer control means capable of selectively transferring a plurality of cassettes to a cassette drive position and mounting the cassettes, and sending the mounted cassettes to the outside. The cassette information is determined and the cassette to be used is determined, and the cassette information is stored in the cassette drive position by controlling the cassette transfer control means, and the timer information storing the timing information for performing the timer operation for the designated cassette. A program recording required time is calculated using a storage unit, a tape remaining amount measurement unit that stores the remaining amount measurement of each tape of the plurality of cassettes and the measured remaining amount information, and the timing information in the timer information storage unit. Required time calculation means, the timing information and time counter of the timer information storage means Comparing means for comparing the current time information from the means, and when the comparison means detects the start of the timer operation, the remaining tape amount of the remaining tape amount storing means for the designated cassette is sufficient for the program recording time. It is determined whether or not the tape running speed is insufficient, and a running speed switching means for switching the tape running speed mode to set the optimum speed mode.

[0007]

When the timer reservation is made by the above means and the remaining tape amount is insufficient for recording the next program, the tape speed mode is automatically switched to record the program to the end as much as possible. It is possible to improve reliability.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a VTR system in which a plurality of cassettes according to an embodiment of the present invention can be preloaded. VT that can be loaded with multiple cassettes
As the R, for example, a device in which a plurality of cassettes are placed on a tray device and a cassette to be recorded or played back is selectively conveyed automatically to a cassette drive unit and can be set is assumed. Note that this specific configuration example will be described later, and the timer management system will be described first.

Reference numeral 900 denotes a system control device, in which a microcomputer is used, and a program for fetching and processing information from each part of the system and controlling a function of each part according to conditions is provided. It is stored. In the figure, only the functions necessary for the present invention are shown in a block form, and the cassette deciding and controlling means 901 to be used,
The operation mode setting and control means 902 is shown.

The information generating source input to the cassette determining and controlling means 901 will be described. The erroneous erasure prevention claw detection means 911 is provided in the used cassette determination and control means 901.
From the cassette detection means, cassette detection information from the cassette detection means 912, and information from the cassette selection setting means 913. Further, information on the operation mode setting and control means 902 is also fetched in the used cassette determination and control means 901. Furthermore, the information from the timer mode and cassette discriminating means 950 is also input to the used cassette determining and controlling means 902.

The erroneous erasure prevention claw detection means 911 detects for each cassette whether or not the erroneous erasure prevention claws provided in the cassettes mounted in the respective mounting areas are present (recordable). Then, the detection information is input to the used cassette determination and control means 901. The cassette detection means 912 is
It is detected whether or not a cassette is mounted in each mounting area, and the information is input to the used cassette determination and control means 901. The cassette selection setting means 913 gives information on a cassette designated by the user from a plurality of mounted cassettes to the used cassette determination and control means 901.
The used cassette determination and control means 901 judges the condition of the input information and controls the cassette transportation control means 914 to set the cassette selected from the plurality of cassettes to a predetermined cassette drive position. As a result, the selected cassette enters the recording or playback state.

The information input to the used cassette determination and control means 901 is tabulated and input to the cassette-specific information storage means 915. The information in this cassette-by-cassette information storage means 915 is also used cassette determination and control means 9
01 can be introduced.

The operation mode setting control means 902 receives operation information from the operation mode input means 916. For example, command signals for recording, reproducing, fast-forwarding, rewinding, stopping, high-speed reproducing, slow or double-speed reproducing, and tape remaining amount measurement.

When a command signal for measuring the remaining amount of tape is input, the operation mode setting and control means 902 inputs the information to the used cassette determination and control means 901. Then, the used cassette determination and control means 901 determines the presence / absence of the mounted cassette (the cassette-by-cassette information storage means 9).
If the cassette is present, the cassette carrying control means 914 is controlled so that the cassette is loaded at a predetermined cassette driving position. When the cassette is loaded, the operation mode setting and control means 902 controls the tape drive system control means 917 to drive the tape, while controlling the tape remaining amount measuring means 918 to measure the tape remaining amount. When the tape remaining amount is measured, the tape remaining amount data of the cassette is stored in the cassette-specific information storage means 915 as the information of the corresponding cassette. In this way, the tape remaining amount of the cassettes loaded one after another is measured, and the information for each cassette is accumulated in the cassette-specific information storage means 915. However, when the cassette is not loaded in the VTR from the beginning, the information detected by the cassette detection means 912 is stored in the cassette-by-cassette information storage means 915, and therefore the residual amount measurement is not performed. In this case, the display is made through the display means 919. Further, as the tape remaining amount measuring mode, there are a mode for obtaining the remaining amount of all the tapes in the loaded cassettes and a mode for omitting the already measured cassettes and measuring the remaining tape amount of the unmeasured cassettes. .. Also, when the cassette is loaded in the tape drive unit and recording or the like is being executed, the remaining tape amount is automatically measured, and the remaining amount data in the cassette-specific information storage means 915 is periodically checked. Entered and updated.

In the case of normal recording and reproduction (other than execution of timer operation), the cassette designated by the user through the cassette selection setting means 913 is arranged at the cassette drive position and input through the operation mode input means 916. The system operates according to the operation signal. The timer operation is executed as follows.

Timer mode and cassette discriminating means 95
In 0, the information from the timer execution cassette selection means 951, the information from the timer cassette mode reservation means 952, the information from the timer reservation timing storage means 953, and the information from the time measurement means are input. The timer execution cassette selection means 951 is an information input section for designating a cassette (recording or reproduction) to be executed by the timer operation, and the timer cassette mode reservation means 9
Reference numeral 52 is an information input unit for deciding whether to execute recording or reproduction for a designated cassette. The timer reservation timing storage unit 953 is a unit that stores a date and time at which a desired cassette is operated by a timer. Further, the time measuring means is a part that generates the current time, date information and the like.

FIG. 2A shows a cassette-specific information storage means 9
15 is an example of the data table formed in FIG. 15, and the number is set according to the placement position of the cassette (for example, the place of the tray device where a plurality of cassettes can be placed in advance).
In addition, cassette presence / absence information, recordable / non-recordable detection information, and remaining amount information are stored according to each placement position. On the other hand, FIG. 7B shows a table of information examples grasped by the timer mode and cassette discriminating means 950.

The "cassette" area indicates a cassette (placement place) for which the timer operation is designated, and is paired with information "presence or absence of designation". In addition, the "record / replay" area shows information that specifies whether the corresponding cassette is recorded or played when the timer operation is performed. Furthermore, in the "reserved time" area corresponding to each cassette, the timer operation Timing is specified. Further, in the table, information indicating whether or not the operation is repeated at the reserved time is set in the "repetition" designated area. In addition, the second and third times of the timer operation can be set.

Timer mode and cassette discriminating means 95
For 0, the time information from the time measuring means 954 is compared with the information set in the reserved time area, and if they match, the corresponding cassette number and reservation content (recording or reproduction) information is sent to the used cassette determining means 901. send. Then, at this time, the interrupt process is forcibly performed, the corresponding cassette is attached to a predetermined cassette drive position, and the timer operation is executed in the designated mode. Here, this system is provided with the following characteristic means.

(1) For example, assume that the standard mode is set as the tape running speed for long-time recording and the reservation is set so that two cassettes A and B are continuously used for long-time recording. .. Here, when the first cassette is near the end of the tape, it is replaced with the second cassette. Here, this system can perform the following salt mountain treatment. First, the recording margin detection means 960 calculates the tape remaining amount information of the second cassette and the remaining time of timer recording. The data in the cassette-by-cassette information storage means 915 is used as the tape remaining amount information, and the data in the timer reservation timing storage means 953 is used as the remaining time information for timer recording.

The recording margin detecting means 960 can recognize the cassette replacement timing based on the cassette instruction and the replacement instruction information of the control means 901. The recording margin detecting means 960 has a built-in formula for determining how much time is required for the tape remaining amount data in the standard mode. And the required time obtained by this calculation is
It is determined whether it is larger or smaller than the remaining time of timer recording.

When the required time is insufficient, the recording margin detection means 960 sends a mode switching signal to the used cassette determination and control means 901. Then, the tape drive system control means 917 switches the tape traveling speed mode to the triple mode. As a result, the time required for recording is secured or the insufficient recording is reduced as much as possible.

(2) The above mode switching operation is obtained when the cassette is replaced. However, this may be performed immediately before the timer recording is started when the plurality of programs are set to be timer-recorded. That is, a plurality of timer reservations may be set at different times for one tape. Then, when trying to start the next timer recording near the end of the tape, the recordable time obtained from the remaining tape amount may be shorter than the required time. In such a case, if the standard mode is switched to the triple mode, the reserved programs can be recorded collectively.
Further, when the recordable time is extremely shorter than the required time, a condition may be added to perform the tape exchange operation.

(3) In the above explanation, it was explained that the timer recording is switched from the standard mode to the triple mode.
However, the present invention is not limited to this, and if there is another mode, it may be switched to the optimum mode that is suitable.

(4) In the above description, an example of a VTR in which a plurality of cassettes can be loaded has been described, but it goes without saying that this is also applicable to a VTR in which one cassette can be loaded. In this case, the recording margin is not judged prior to the exchange of the cassette, but the recording margin is judged from the remaining tape amount when the timer recording is started.

Next, a V in which the above management device is incorporated
The structure of TR will be described. In this example, a VTR in which a two-roll cassette can be loaded in advance will be described for easy understanding.

FIGS. 3A, 3B and 4 are explanatory views showing the basic configuration of cassette loading and unloading. Reference numeral 10 denotes a VTR housing, and an opening 12 is formed in the front surface thereof, through which the tray device 100 can be horizontally inserted in the front-rear direction and exposed from the inside of the housing 10. In addition, 13 is a lid provided in the opening 12, and the tray device 100 is used for the housing 1
When it is pulled out from 0, it is opened, and when it is inserted into the housing 10, it is closed. Although not shown, this is realized by a lid opening / closing mechanism that interlocks with the tray device 100.

A motor 21 is provided at a fixed position as a tray drive mechanism inside the housing 10, and the intermediate gear 22 can be rotationally driven. The intermediate gear 22 has a rotation shaft in a direction orthogonal to the front-back movement direction of the tray device 100, and can drive the drive gears 23, 24 rotatably provided in the front-rear direction, respectively. Drive gear 2
3, 24 can be meshed with a rack provided on the lower surface of the side of the tray device 100 to drive the tray device 100 back and forth. Further, inside the VTR, there is a function of mounting a cassette at a predetermined position and executing tape loading. A main chassis 14 is provided with a reel shaft that engages with the reel hub of the cassette, various components (not shown) necessary for tape loading and tape driving. Further, reference numeral 15 is a rotary head drum to which a tape pulled out from a cassette arranged at a predetermined mounting position is attached by tape loading. 3A shows a state in which the front drive gear 23 meshes with the rack, FIG. 3B shows a state in which both the front and rear drive gears 23 and 24 mesh with the rack, and FIG. 4 shows a rear portion. The drive gear 24 is engaged with the rack.

The tray device 100 has a frame-shaped tray frame when viewed from above, and the rails on the outside of the side plates thereof are guided by rollers provided inside the housing 10 to be horizontally movable.

In this system, cassettes 200 and 30 are provided in the front region and the rear region of the upper surface of the tray device 100, respectively.
Two of them can be arranged (FIG. 3 (A)). Pantograph mechanisms 201 and 301 are attached to the front region and the rear region of the tray device 100, respectively. The pantograph mechanisms 201 and 301 are similar mechanisms and can lower and raise the cassette bottom support plate by a link mechanism.

FIG. 3A shows a state in which the cassettes 201 and 301 are placed on the entire area and the rear area, respectively. The cassettes 201 and 301 have their front end portions directed obliquely upward because they are lifted by the pop-up mechanism provided in the tray device 100 to facilitate the cassette insertion / removal operation. Moreover, in this state, it is designed so that the rear cassette 300 can be taken out without pulling the tray device 100 largely out of the opening of the housing 10. That is, the entire front cassette 200 is exposed, but the rear cassette 300 is only partially exposed (the tip) from the opening. This is because by designing in this way, the distance for pulling out the tray device 100 can be short, and the proportion of the peripheral space in terms of handling can be reduced.

FIG. 3B shows the rear pantograph mechanism 3
Reference numeral 01 indicates a state in which the cassette 300 is mounted at the cassette mounting position below the tray passing position. Further, FIG. 4 shows a state in which the front pantograph mechanism 201 lowers the cassette 200 and mounts it at a predetermined cassette mounting position. To move from the state of FIG. 3A to the state of FIG. 3B, the tray drive mechanism operates to move the tray device 100 horizontally toward the inside of the housing 10, and the first detection position (rear) When it reaches the cassette drive position), the tray device 100 is stopped. At this position, a pantograph drive mechanism, which will be described later, operates to drive the pantograph mechanism 301 and lower the cassette 300. To move from the state of FIG. 3B to the state of FIG. 4, the pantograph drive mechanism drives the pantograph mechanism so as to lift the descended cassette 300, and returns the tray device 100 to the original position. Next, the tray drive mechanism moves the tray device 100 further inward, and when the pantograph mechanism 200 reaches the upper position of the cassette, that is, the second detection position (front cassette drive position), the tray device 100 moves. Stop moving. And again, the pantograph drive mechanism
This time, the pantograph mechanism 201 is driven, and the cassette 20
0 is lowered to a predetermined position.

In the state shown in FIG. 4, the pantograph mechanism 30 having the rear cassette 300 mounted thereon is located just above the rotary head drum 15. Here, the pantograph mechanism 301 is guided in a direction in which it is slightly raised from the tray device 100, and the cassette 300 and the pantograph mechanism 3 are guided.
01 is designed not to collide with the rotary head drum 15. The member that lifts the pantograph mechanism 301 is the guide member 16 that is attached so as to project to the side surface inside the housing 10. That is, when the tray device 100 is moved further inward from the state of FIG. 3A with the cassette 300 being raised, the bottom plate of the pantograph mechanism 301 is designed to ride on the inclined surface of the guide member 16. There is. As described above, the cassette 300, that is, the pantograph mechanism is slightly lifted at the standby position of the cassette 300. The reason is that when the height of the housing 10 is lowered for downsizing, the movement locus of the tray device 100 is changed. This is because it will collide with the upper portion of the drum 15. This is also because ventilation around the rotary head drum 15 is improved to reduce the temperature rise and the safety of the cassette tape is taken into consideration.

Next, by comparing the states of FIG. 3A and FIG. 4, it can be seen that the design is as follows. That is, FIG. 3A shows the tray device 100 in the most pulled out state, and FIG. 4 shows the tray device 100 in the deepest inserted state. A rack is provided on the edge of the lower surface of the tray device 100, and gears 23 and 24 mesh with the rack to drive the tray device 100 in the front-rear direction. However, FIG. 3 (A)
In this state, only the gear 23 meshes, and in FIG. 4, only the gear 24 meshes. The gears 23 and 24 are arranged side by side in the tray movement direction, and both gears 23 and 24 are interlocked by the intermediate gear 22. It is like this. Arranging the gears 23 and 24 in this way means that the overall length of the tray device 100 in the front-rear direction can be shortened. If one drive gear of the tray device 100 is to be realized,
The total length of the tray device 100 must be longer than that of the embodiment. This is because it is necessary to mesh with one gear in any of the states shown in FIGS.

As described above, the fact that the total length of the tray device 100 can be shortened not only reduces the weight and reduces the load on the drive device, but also narrows the space in which the tray device 100 projects when the cassette is loaded. Therefore, the occupied space in the periphery can be reduced. Conversely, in other words, even if the total length of the tray device 100 is short, the movement stroke of the tray device can be increased.

FIG. 5 is a schematic perspective view showing a state in which the tray device 100 is most pulled out from the housing 10.
As can be seen from this figure, the pop-up member 230,
330 is in a state in which the front rotation ends of the cassette bottom support plates 240 and 401 are horizontal.

The operation section of the VTR body has operation switches for recording Rec, play Play, rewind, fast forward, stop, etc., and also a switch for designating the front cassette load F and the rear cassette load R. There is. This system is provided with an erroneous erasure prevention claw detection device that detects whether or not the erroneous erasure prevention claw of the cassette placed on the tray device 100 is broken.

FIG. 6 shows in detail the left rear corner portion of the frame 101. The same figure (A) is a perspective view and the same figure (B) is the figure seen from back. On the lower side of the corner portion of the frame 101, a cutout portion 130 cut out in an L shape is formed.
Are formed. An L-shaped claw detection lever 701 is arranged along the notch 130, and the middle part of the claw detection lever 701 is attached to the thickness surface of the frame by a shaft 702 and pivoted about the shaft 702. You are free. Normally, a spring (not shown) urges the projection 703 at one end so as to project inside the frame. Further, a protrusion 704 protruding downward is formed on the other end of the claw detection lever 701. Frame 10
A groove 131 formed on the outer side surface of 1 is a groove into which a roller fixed inside the housing enters, and the frame is guided in the front-rear direction by the roller and is movable.

7A and 7B show a cassette 200.
A and 200B are mounted on the tray device 100. In the case of the cassette 200A, the erroneous erasing claw is broken, and in the case of the cassette 200B, the erroneous erasing prevention claw remains. .. As can be seen by comparing FIGS. (A) and (B), the rotation angle of the claw detection lever 701 is different between the case without the claw and the case with the claw. On the other hand, the tray device 100
The claw detection lever 703 moves together with the frame 101 when is inserted into the housing, and a shutter mechanism 720 is provided at the lower part of the movement locus (FIG. 7C). In the shutter mechanism 712, a rotatable drive lever 722 is attached to a shaft 721 at a fixed position, and one end of the drive lever 722 has a pawl detection lever 7
A protrusion 723 that can contact the protrusion 704 of No. 03 is formed. The contact is possible because the claw detection lever 703 can be contacted only in the state of FIG. 7B (with the erroneous erasure prevention claw). In the state of FIG. 7A (without erroneous erasure prevention claws), there is no contact. When the projection 704 approaches and contacts the projection 723 of the drive lever 722, the drive lever 722 rotates the shaft 72.
When 1 is used as a fulcrum, it rotates in the direction of the arrow, and when it passes and becomes non-contact, it returns to its original position. During this operation, the drive lever 722 moves the shutter plate 7 through the intermediary lever 724.
25 is driven, and the light incident on the tape end detection element 730 is temporarily blocked. The shutter plate 725 is rotatably supported by a shaft 726 at a fixed position, and its rotating end is connected to the intermediary lever 724.

As described above, according to the erroneous erasure prevention claw detection device, the presence or absence of the claw of the cassette is determined by the presence or absence of the output of the tape end detection element 730 when the cassette is mounted in the tray device and inserted into the housing. Can be determined.
The tape end detection element 730 is used for the tape end detection, but this device can provide multiple functions.

In FIGS. 6 and 7, the frame 101
Although the state in which the claw detection lever 701 is provided in the front area of the above is described, the similar claw detection lever is also provided in the rear area, and the erroneous erasure prevention claw of the cassette placed in that area is detected. You can do it. However, since the front and rear claw detection levers are designed so as to pass through the arrangement position of the drive lever 722, the function of the tape end detection device is shared. Therefore, if the two cassettes are recordable, the detection signal is obtained twice.

Although the above-described structure has been described with respect to the erroneous erasure prevention claw detection device, a cassette detection device is obtained by providing a symmetrically similar device on the right side of the frame and providing a cassette detection lever, a shutter mechanism and an optical sensor. be able to.

FIG. 8 shows the position of the tape end detector and
The example of the sensor which obtains a detection signal is shown. 801 is
It is a predetermined mounting position near the rotary head drum 15, and the cassette is mounted in this position by the pantograph mechanism. The tape can be driven in this mounted state. At the time of this mounting, the light source unit 802 that constitutes the tape detection device is adapted to enter the hole at the center of the left and right opened on the bottom surface of the cassette. The light of the light source unit 802 is
It is irradiated horizontally to the left and right. A tape end light detection element 730 using a light receiving element in the optical path of light is provided on the left side, and a second tape start end detection element 743 is provided on the right side. The shutter plates 725 and 742 of the shutter 720 are arranged in front of the respective detection elements. The output of each detection element is input to the system control unit.

[0045]

As described above, according to the present invention,
When recording is performed by timer reservation, when the remaining tape amount required for the reserved program is insufficient, the fact is automatically determined, and the recording speed is switched to prevent the recording error of the reserved program.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a table formed in a storage section of the circuit of FIG.

FIG. 3 is a diagram showing a structure of a VTR to which the present invention is applied, in principle, together with an operation mode.

FIG. 4 is a diagram showing still another operation mode of the structure shown in FIG. 3;

FIG. 5 is a perspective view showing a state in which the tray device of the VTR is pulled out.

FIG. 6 is an explanatory diagram showing a configuration of an erroneous erasure prevention claw detection device provided in association with the tray device.

FIG. 7 is an operation explanatory view shown for explaining the operation of the erroneous erasure prevention claw detection device in FIG. 6;

FIG. 8 is an explanatory diagram showing an erroneous erasure prevention claw detection device and the arrangement position of a sensor unit in the cassette detection device.

[Explanation of symbols]

900 ... System control unit, 911 ... Accidental erasure prevention claw detection unit, 912 ... Cassette detection unit, 913 ... Cassette selection setting unit, 914 ... Cassette transport control unit, 915 ... Cassette-specific information storage unit, 916 ... Operation mode input unit,
917 ... Tape drive system control means, 918 ... Tape remaining amount measurement means, 950 ... Timer mode and cassette discrimination means, 951 ... Timer execution cassette selection means, 952 ...
Timer cassette mode reservation means, 953 ... Timer reservation timing storage means, 954 ... Time measurement means.

Claims (1)

Claim: What is claimed is: 1. A cassette transportation control means capable of selectively transporting and mounting a plurality of cassettes to a cassette driving position, and sending the mounted cassettes to the outside, and determining input information. To determine the cassette to be used, and to determine the cassette to be used at the cassette drive position by controlling the cassette transport control means, and timer information storage means that stores timing information for performing timer operation for the designated cassette. And a tape remaining amount storage unit for storing the remaining amount measurement of each tape of the plurality of cassettes and the measured remaining amount information, and it is necessary to calculate a program recording required time using the timing information in the timer information storage unit. Time calculation means, the timing information and time measurement means of the timer information storage means Comparing means for comparing the current time information from the above, and when the timer operation start is detected by this comparing means, is the remaining tape amount of the remaining tape amount storing means for the designated cassette sufficient for the program recording time? A timer operation management device comprising: a traveling speed switching unit that determines whether or not the tape traveling speed mode is insufficient and sets the tape traveling speed mode to an optimum speed mode.