JP2000331462A - Event registration method and processing device for recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To register easily information on events already recorded in a recording medium to a memory means. SOLUTION: A memory card 20 is stuck to a videocassette 10 with a program recorded thereon. A tape thickness is calculated by running the videocassette 10 at high speed. By executing, for example, the index searching of the videocassette 10, a switching point of the program is detected by utilizing a code for program reaching and a control signal. When the switching point is detected, the detected tape recording position by using the tape thickness and the program title are stored in the memory card 20 to enable the re- registration of program information. When the program information is stored in the memory card 20 before the re-registration of the program information, warning is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an event registration method and a recording medium processing device. More specifically, when a storage unit is provided on a recording medium on which an event is recorded, a switching point of the event recorded on the recording medium is detected, and information about the event is generated for each event and registered in the storage unit. Can be done.

[0002]

2. Description of the Related Art Conventionally, in a recording / reproducing apparatus capable of recording various events on a recording medium and reproducing the events recorded on the recording medium, for example, a video tape recorder for recording and reproducing a broadcast program, a video cassette is mounted. When the video cassette is played back, the video cassette is discriminated, and the program information (recording date, recording start time,
One having a function of reading out a channel number and a recording position) and displaying it on a screen is known.

However, in such a video tape recorder, it is impossible to know what program is recorded on the video cassette unless the video cassette is mounted. For this reason, a memory capable of writing and reading data in a non-contact manner is attached to the video cassette in advance, and the program information on the program recorded on the video tape is stored in the memory, and based on the stored program information, A method of locating a desired program or the like has also been put to practical use.

[0004]

In the case where the video cassette is provided with a memory for storing the program information, it is necessary to write the information on the recording start position and the recording end position of the program into the memory as the program information. Therefore, the writing of the program information is performed when the program is recorded. For this reason,
If a program is recorded on a video tape in a state where no memory is provided, and then the memory is pasted, it is not possible to perform cueing of the already recorded program.

In view of the above, the present invention provides an event registration method and a recording medium processing device which can easily register information about an event already recorded on a recording medium in a storage means.

[0006]

According to the present invention, there is provided an event registration method, wherein a storage means is provided on a recording medium on which an event is recorded, and a switching point of the event recorded on the recording medium is detected, and each event is recorded. The information about the event is generated and registered in the storage means.

[0007] The recording medium processing device is a recording medium processing device using a recording medium on which an event is recorded and provided with a storage means. The reproduction means reproduces the recording medium, and reproduces the recording medium. A control unit for detecting a switching point of the recorded event based on the obtained signal and generating information on the event for each event, and communicating with the storage unit and registering the information on the event generated by the control unit in the storage unit. Event registration means.

[0008] Further, there is provided operation input means for setting title information, the control means generates a title for each event using the title information set by the operation input means, and the event registration means generates the title by the control means. The registered title of each event is registered in the storage unit as information on the event. Further, it has a display means, and the display means displays a list of recording positions of the events registered in the storage means. In the case where a warning output unit is provided, and a switching point of the event is detected by the control unit, information about the event is generated for each event and stored in the storage unit, the information about the event is already registered in the storage unit. When this is determined by the event registration means, a warning is issued by the warning output means.

In the present invention, for example, when a memory card is provided in a video cassette on which a broadcast program is recorded, a program switching point is determined by determining a cue code and / or a control signal while searching the video cassette at high speed. Is detected. In addition, the recording mode of the program is determined using the control signal. When the switching point of the program is detected, the title and recording mode of the finished program are sequentially registered in the video cassette using the preset title information. In addition, the amount of change in the rotation cycle of the reel caused by running the tape at high speed is converted into the amount of change in the running speed at the time of recording the program, and the tape thickness is calculated based on the changed amount after the conversion. The recording position of the program is determined by using the information, and the determined recording position is sequentially registered in the memory card. When the program information is registered in this way, the recording positions of the registered programs are listed on the display device. Further, when the program information has already been registered in the memory card, a warning display is performed to determine whether or not new program information can be registered.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a video cassette, and a recess 11 provided in a casing of the video cassette 10 has a non-contact type memory card (hereinafter, referred to as a “memory card”) 2 as an auxiliary storage device.
0 is stuck. The memory card has an antenna position display 21 so that the position of an antenna 201 described later can be determined.

The memory card 20 is configured as shown in FIG. 2. The antenna 201 receives a radio wave from an antenna 41a or 41b of the video tape recorder 30 described later. The signal RFA received by the antenna 201 is transmitted to the tuning circuit 202 and the power supply circuit 220.
Supplied to

In the tuning circuit 202, a modulation signal MAR having a predetermined carrier frequency is selected from the signal RFA supplied from the antenna 201. The modulation signal MAR obtained by the tuning circuit 202 is amplified to a predetermined level by the amplification circuit 203 and then supplied to the demodulation circuit 204. Demodulation circuit 2
At 04, the modulated signal MAR is demodulated to be a received data signal DMR. The received data signal DMR is supplied to the microcomputer 210 via the communication control circuit 205.

The microcomputer 210 has a ROM (Read Only M
emory) 211 is connected, and each part of the memory card 20 is controlled according to a control program stored in the ROM 211. The microcomputer 210 includes an EEPROM.
(Electrically Erasable and Programmable Read Only M
emory) 212 is connected, and information on the program contained in the supplied received data signal DMR (recording date, recording start time, channel number, program recording position, etc.)
Is stored in the EEPROM 212.

The information stored in the EEPROM 212 is read out by the microcomputer 210 and the transmission data signal DM
When S is generated, the transmission data signal DMS is supplied to the modulation circuit 206 via the communication control circuit 205.

In the modulation circuit 206, the supplied transmission data signal DMS is modulated into a signal having a predetermined carrier frequency. The modulation signal MBS obtained by the modulation circuit 206 is amplified to a signal level necessary for communication by the amplification circuit 207, and then supplied to the antenna 201, and the modulation signal MBS of the carrier frequency is transmitted from the antenna 201.

In the power supply circuit 220, the antenna 20
Energy is extracted using electromagnetic coupling between the antenna 1 and the antenna 41a or the antenna 41b of the video tape recorder 30, and the power required for the memory card 20 is generated.

Next, the configuration of the video tape recorder 30 is shown in FIG. A transmission / reception processing unit 42 is connected to the antennas 41 a and 41 b provided inside the video tape recorder 30, and the transmission / reception processing unit 42 is controlled by a microcomputer (hereinafter referred to as “microcomputer”). The unit 50 is connected. This antenna 41a
For example, provided on the front surface of the video tape recorder 30,
When the memory card 20 attached to the video cassette 10 is held over the front of the video tape recorder 30, communication between the memory card 20 and the control unit 50 is performed via the antenna 41a. The antenna 41b is connected to the video cassette 10 to which the memory card 20 is attached, for example.
Is mounted on the video tape recorder 30 at a position facing the antenna 201 of the memory card 20, and communication between the memory card 20 and the control unit 50 is performed via the antenna 41b.

FIG. 4 shows a configuration of the transmission / reception processing unit 42, and a radio wave from the antenna 201 of the memory card 20 is received by the antenna 41a or 41b. The signal RFB received by the antennas 41a and 41b is supplied to the tuning circuit 422.

The tuning circuit 422 selects a modulation signal MBR having a predetermined carrier frequency from the signal RFB. The modulation signal MBR obtained by the tuning circuit 422 is
The signal is amplified to a predetermined level at 23 and supplied to a demodulation circuit 424. In demodulation circuit 424, modulated signal MBR is demodulated to be received data signal DVR. The received data signal DVR is supplied to the control unit 50 via the communication control circuit 425.

When transmission data signal DVS having information indicating a program is supplied from control unit 50, transmission data signal DVS is transmitted.
VS is supplied to the modulation circuit 426 via the communication control circuit 425.

In the modulation circuit 426, the supplied transmission data signal DVS is modulated into a signal having a predetermined carrier frequency. The modulation signal MAS obtained by the modulation circuit 426 is amplified to a signal level necessary for communication by the amplifier circuit 427, and then supplied to the antenna 41a or 41b to transmit the modulation signal MAS of the carrier frequency.

A signal RFT obtained by receiving a broadcast wave with the antenna 61 shown in FIG. The tuner 51 selects a broadcast wave of a desired frequency and generates a video signal VT. This video signal VT is supplied to the signal processing unit 52. The signal processing section 52 processes the video signal VT to generate a recording signal WS. The recording signal WS is supplied to the mechanical deck 53 and the video cassette 10 is rotated by a rotating head (not shown) of the mechanical deck 53.
Recorded on a videotape.

When a video tape is played back, a playback signal RS is sent from the mechanical deck 53 to the signal processor 5.
2 is supplied. The signal processing section 52 processes the reproduction signal RS to generate a reproduction video signal VP. The reproduced video signal VP is supplied to the character generator 54.

The character generator 54 generates a video signal VC for displaying information indicating a program or the like based on the control signal CC from the controller 50. Further, in the character generator section 54, the generated video signal VC is superimposed on the reproduced video signal VP from the signal processing section 52, and the resulting video signal is output as the video output signal VOUT.
Output from 0. Alternatively, one of the reproduced video signal VP and the generated video signal VC is output as the video output signal VOUT from the video tape recorder 30. When the video output signal VOUT is supplied to the display device 65, a reproduced image, information indicating a program, and the like are displayed on the screen of the display device 65.

The control section 50 of the video tape recorder 30 generates a control signal CT for controlling the tuner section 51, the signal processing section 52, and the mechanical deck section 53, and generates the control signal CT for the memory card 20 attached to the video cassette 10.
The communication with is also performed. Further, the control signal CC is generated based on the reception data signal DVR from the transmission / reception processing unit 42. The operation input unit 33 is connected to the control unit 50, and the operation of the video tape recorder 30 is switched by operating the operation input unit 33. The switching of the operation may be performed using a remote control device or a telephone line. Further, the display signal DP is supplied from the control unit 50 to the display unit 34, and the display unit 34 displays an operation state and the like.

In the communication display section 36 connected to the control section 50, a display relating to the communication state between the antenna 201 of the memory card 20 and the antenna 41a of the video tape recorder 30 is performed by the display control signal TS from the control section 50. . For example, the communication display unit 36 is configured by a light emitting diode or the like, and the light emitting diode is turned on or blinked to indicate that communication is being performed or communication is completed. The communication state may be displayed on the display unit 34.

Further, an audio output section 55 connected to the control section 50 outputs audio relating to a communication state between the antenna 201 and the antenna 41a based on the audio signal TA from the control section 50. For example, the audio output unit 55 is configured using a buzzer or the like, and the end of communication is notified by a buzzer sound.

In the video tape recorder 30 configured as described above, the program information having the recording position information of the program registered in the video cassette is stored in the auxiliary storage device of the video cassette by the signal from the control unit 50. Also,
For example, when selecting a program registered in the video cassette, program information is read from the auxiliary storage device, a control signal CC is generated based on the read program information, and the character generator 54 Supplied. The character generator 54 generates a video signal VC for displaying information based on the control signal CC, and supplies the video signal VC to the display device 65. Therefore, information about the program is displayed on the screen of the display device 65. On the screen, a blank portion, that is, a recording position of an unnecessary program or an unrecorded portion of a video tape is determined on the basis of information read from the auxiliary storage device of the video cassette, and the most possible time is recorded. "BLANK TIME" indicating a long blank part is displayed on the screen.

Next, the program information relating to the program registered in the video cassette is stored in the video cassette 10 in the memory card 2.
The operation of the control unit 50 at the time of re-registration to 0 will be described using the flowcharts shown in FIGS.

In step ST1, it is determined whether or not a re-registration start operation has been performed on the operation input unit 33. Here, when it is determined that the re-registration start operation has been performed, the process proceeds to step ST2, and when the re-registration start operation has not been performed, the process returns to step ST1.

In step ST2, program information is read from the memory card 20, and the process proceeds to step ST3. In step ST3, it is determined whether or not the memory card 20 is affixed to the video cassette 10 by the program information reading process in step ST2. Here, when communication with the memory card 20 is performed and it is determined that the memory card 20 is attached to the video cassette 10, the process proceeds to step ST4, and when it is not determined that the memory card 20 is attached, the process proceeds to step ST5.

In step ST4, it is determined whether there is program information in the memory card 20 or whether there is an overwrite-inhibited program. Here, when it is determined that the program information is registered in the memory card 20 or that there is an overwrite-inhibited program in the registered programs, the process proceeds to step ST5, where it is determined that there is the program information or the overwrite-inhibited program. If not, the process proceeds to step ST6.

In step ST5, a warning display indicating that the memory card 20 is not stuck or the memory card 2
A warning display indicating that program information is registered at 0 or a warning display indicating that an overwrite-inhibited program is registered is displayed on the screen of the display device 65, and a step ST1 is executed.
Return to As described above, since the warning is displayed on the display device 65, it is possible to prevent the program information from being re-registered in the memory card 20 in which the program information is already written by mistake.

When the process proceeds from step ST4 to step ST6, it is determined in step ST6 whether or not the measurement of the tape thickness has been completed. Here, when it is determined that the measurement has been completed, the process proceeds to step ST9, and when it is not determined that the measurement has been completed, the process proceeds to step ST7.

In step ST7, a tape rewind operation is performed to move the tape position to the head position of the tape, and then the process proceeds to step ST8, where the tape thickness is measured in step ST8.

Here, a method for measuring the tape thickness will be described.
This will be described with reference to FIG. Time t1 at constant tape speed V
From the supply reel (hereinafter referred to as "S reel") to the take-up reel (hereinafter referred to as "T reel") during this time Td. Ld can be calculated from equation (1). Ld = V × Td (1)

The difference between the side area Ss1 of the S reel at the time point t1 and the side area ASs2 of the S reel at the time point t2 is obtained, and this difference Sd is expressed by the tape length Ld as shown in the equation (2).
, The tape thickness D can be obtained. D = Sd / Ld (2)

The rotation cycle of the S reel at time t1 is Ps1, and the rotation cycle of the S reel at time t2 is Ps2.
Then, the side areas Ss1 and Ss2 can be obtained from the equations (3) and (4). ^{Ss1 = V 2 × Ps1 2 /} 4π ··· (3) Ss2 = V 2 × Ps2 2 / 4π ··· (4)

Further, since the difference Sd can be obtained from equation (5), equation (6) can be obtained by substituting equations (1) and (5) into equation (3). The ^{Sd = Ss1-Ss2 = V 2} × (Ps1 2 -Ps2 2) / 4π ··· (5) D = V × (Ps1 2 -Ps2 2) / 4πTd ··· (6) This equation (6), If the tape speed V is constant and a known value, the tape thickness D can be measured by obtaining the rotation cycle of the S reel.

Here, the tape speed V is the operation mode of the video tape recorder, that is, the standard mode, or the tape running speed is reduced and the track width is narrowed so that the recording / reproducing operation can be performed for a longer time than in the standard mode. It can be easily and accurately determined depending on whether the mode is a long time mode, a standard mode or a double speed mode with respect to the long time mode. Further, the rotation cycle of the S reel can be easily determined by using a pulse signal generated by the signal generation means provided with a signal generation means for generating a pulse signal corresponding to the rotation of the S reel, for example, on the S reel base. The rotation period can be obtained in the following manner. The thickness of the tape is not limited to the S reel, but may be obtained from the rotation cycle of the T reel. Furthermore, the change amount of the rotation cycle is
When the radius of the outermost periphery of the tape lamination portion is small, the change amount increases. Therefore, when calculating the tape thickness D, S
The tape thickness D can be accurately obtained by using a reel having a small outermost radius of the tape lamination portion of either the reel or the T reel, that is, a rotation cycle of the reel having a short rotation cycle.

When the tape thickness D is obtained in this manner, the side area SSs of the S reel is obtained from the equations (7) and (8).
And the side area STs of the T reel can be calculated. Further, as shown in the equation (9), the side areas SSs and STs are added, and the addition value AH of the side area of the hub portion of the S reel and the T reel, which is obtained in advance, is subtracted from the addition value. Divided by the total tape length LT
Can be calculated. In the equations (7) and (8), PS indicates the rotation cycle of the S reel, and PT indicates
The rotation cycle of the T reel when the rotation cycle of the S reel is PS is shown. SSs = (1 / 4π) × V ² × PS ² (7) STs = (1 / 4π) × V ² × PT ² (8) LT = (SSs + STs−AH) / D (9)

Further, by subtracting the side area of the hub portion of the S reel from the side area SSs of the S reel and dividing by the tape thickness D, the tape length LSR of the S reel can be calculated. Change the tape length LSR to the tape speed V
, The remaining time of the tape can be obtained. Note that the tape length LSR on the S reel side can also be obtained by calculating the tape length on the T reel side and subtracting it from the entire tape length LT.

As described above, when measuring the tape thickness D, the tape speed is slow when the mode is set to the long time mode. The tape must be run for a long time, for example, 15 minutes or more, and it takes time to measure the tape thickness. For this reason, by setting the operation mode to the N-times speed mode (the tape speed is constant), the amount of change in the rotation cycle can be increased in a short time, and the tape thickness can be accurately obtained. In this case, by multiplying the reel cycle by N times, it is possible to set the reel cycle as if the recording mode was set to the standard mode. Accurate measurement.

More specifically, the long-time recording mode has a recording time three times as long as the standard mode, and when the shortest time of the program registered in the memory card 20 is, for example, 15 minutes, the recording time during the recording of the program is reduced. When calculating the tape thickness, the tape thickness is measured when the tape is wound around the take-up reel for 40 turns. In addition, since the program is already recorded on the tape at the time of re-registration, the tape thickness is measured when the tape is wound around the take-up reel for 80 rounds in order to improve the accuracy. Further, at the tape leading position, a step is generated in a portion where the tape is wound by a leader tape or the like, so that the tape thickness is measured after running the tape for a predetermined time. By measuring the tape thickness in this way, the tape thickness can be measured at high speed and with high accuracy. As described above, when the measurement of the tape thickness is completed in step ST8, the process proceeds to step ST9.

When the process proceeds from step ST6 or ST8 to step ST9, the tape position is rewound to the tape start position in step ST9, and the process proceeds to step ST10, where the tape start position is set as the program start position and the program number N is set to " 1 "and the process proceeds to step ST11.

In step ST11, a break of a recorded program, that is, a program switching point is detected. In the detection of the program switching point, for example, a cueing code recorded at the head of the program, for example, VISS (VHS INDEX SEARCH SYSTEM)
Is performed using the control signal CTL. FIG.
FIG. 8A shows a case where the cueing code DH is recorded at the beginning of the program, and FIG. 8B shows that the cueing code DH is erased by overwriting a position of the already recorded program with a new program. Is shown.

Here, the program switching point is detected during a high-speed tape running mode in which the cueing code DH and the control signal CTL can be read, for example, during an index search operation. In the case shown in FIG. When the cueing code DH is detected, the head position of the program is determined based on the detected position of the cueing code DH. The end position of the program is determined based on the start code detection position when the start code DH recorded at the beginning of the next program is detected. In the case shown in FIG. 8B, it is determined that the control signal CTL has been erased by the all erase head, and then the position where the control signal CTL is detected again is set as the head position of the program, and the control signal CTL is no longer detected. Let the position be the end position of the program.

As described above, since the program switching point is detected based on the cue code DH and the control signal CTL, for example, even on a tape on which the cue code DH is not recorded, the control signal CTL is used. Thus, the program switching point can be detected.

When the program switching point detection process is started in step ST11 and the process proceeds to step ST12, the process proceeds to step S12.
At T12, a process of determining the program switching mode, that is, whether the program was recorded in the standard mode or the long-time mode, is started while detecting the program switching point.

In the recording mode discriminating process, the number of pulses of the control signal CTL is counted for a predetermined tape running time (tape length), and based on the counted value, whether the recording mode is the standard mode or the long time mode is determined. It is determined whether there is any. Here, the recording time of the program is equal to or longer than the time required to calculate the tape position (for example, the time required to determine the tape position when recording the program in the long time mode is 15 times).
If a program whose recording time is 15 minutes or more is registered, the minimum recording time of the program to be registered (hereinafter referred to as “registered minimum recording time”) after the head of the program is detected is detected. By completing the determination processing within a short time, the recording mode can be determined for each program to be registered. For this reason, the control signal CT within a time shorter than the minimum recording time for registration in the long-time mode (hereinafter referred to as “mode determination time”) after the start of the program is detected.
By counting the number of pulses of L, it is possible to determine whether the recording mode is the standard mode or the long-time mode based on the count value.

FIG. 9A shows a recording state of a program, in which a program B2 is recorded with a blank portion provided after the program B1. Note that the recording time of the program B2 is shorter than the minimum registration recording time. A program B3 is recorded with a blank portion after the program B2, and a program B4 is recorded after the program B3 up to the tape end. Further, the program B5 is overwritten from the tape top, and the program B5 is overwritten.
After the recording position No. 5, a full width erased portion is formed. Also, the program B5 has been overwritten, so that the start code of the program B1 has disappeared.

When re-registering the program information using the tape recorded as described above, the control signal is set to 30 Hz.
Assuming that the recording time in the long mode is three times longer than the standard mode, as shown in FIG. 9B, the mode set to 10 minutes in the long mode after the head of the program is detected at time t11. Control signal C within discrimination time TM
When the pulse count value of TL is about 6000,
It can be determined that the mode is the standard mode. If the count value within the mode determination time TM is about 18000 after the start of the program is detected at the time t12, it can be determined that the mode is the long time mode.

The mode determination time can be set by using the remaining tape time. That is, the recording mode is determined as described above by counting the number of pulses of the control signal CTL from the remaining tape time when the beginning of the program is detected until the remaining tape time decreases by the mode determination time. can do.

The reserved program is recorded in the standard mode, and when the remaining tape capacity becomes insufficient, the recording mode is automatically switched from the standard mode to the long time mode in accordance with the remaining tape capacity. Even if a program is recorded in the “JUST REC” mode in which the program is recorded without interruption, if the recording mode is not switched from the standard mode to the long-time mode during the counting period of the number of pulses of the control signal CTL, the recording mode is correctly performed. Can be determined.

As described above, the program switching point detection and the recording mode discrimination processing are performed together during the index search operation, so that the program information to be registered in the memory card 20 can be obtained efficiently.

When the recording mode discriminating process is started in step ST12, in the next step ST13, it is discriminated whether or not the tape running is completed based on the operation on the tape end or the operation input unit 33. If the tape running has not been completed, the process proceeds to step ST14.

In step ST14, it is determined whether a program switching point has been detected. If it is not determined that a program switching point has been detected, the process returns to step ST13. If a program switching point has been detected, the process proceeds to step ST15.

In step ST15, it is determined whether or not the detected program switching point indicates the end position of the program. Here, when the program switching point is detected based on the cue code, the program switching point indicates the end position of the program and the start position of the next program, so that the process proceeds to step ST16. Further, when the program switching point is a position where the control signal CTL is no longer detected, the program switching point indicates the end position of the program, and the process proceeds to step ST16. When the program switching point is at a position where the control signal CTL can be detected,
Since this program switching point indicates the start position of a new program, the process proceeds to step ST17.

In step ST16, the program switching point is set as the recording end position of the program as the program information to be registered together with the already stored recording start position. When the program switching point is detected based on the cue code,
Since the program change point indicates the end position of the program and the start position of the next program, the program change point is stored as the recording start position of the next program. In step ST17, the program switching point is stored as the start position of a new program, and the process returns to step ST13.

When the process proceeds from step ST16 to step ST18, in step ST18, the recording time of the program is determined from the recording start position and the recording end position of the program set as the program information in step ST16. It is determined whether or not this is the case. Here, when it is determined that the recording time is not equal to or longer than the registered minimum recording time, the process proceeds to step ST19, in which the recording start position and the recording end position of the program set as the program information are invalidated and the process returns to step ST13. If it is longer than the minimum recording time, the process proceeds to step ST20.

In step ST20, it is determined whether or not the program name is set in advance. If it is determined that the program name is set, the process proceeds to step ST21. If the program name is not set, the process proceeds to step ST22. move on.

In step ST21, the set program name is set as the program name of the re-registered program whose end position of the program has been detected, and the flow advances to step ST23. In step ST22, a program name input screen as shown in FIG. 10 is displayed to prompt the input of the program name, and the input program name is set as the program name of the re-registered program whose end position of the program is detected. Then, the process proceeds to step ST23.

In step ST23, it is determined whether or not a setting for adding a program number is made. If it is determined that a setting for adding a program number is made, step S23 is executed.
The process proceeds to T24, and if it is not set to add a program number, the process proceeds to step ST25. When the setting of whether or not to add the program number is not made, when the input screen of the program name shown in FIG. 10 is displayed, the setting as to whether to add the program number together with the program name may be made. Good.

In step ST24, a program number is added to the program name of the re-registered program, and the flow advances to step ST25. By adding the program number in this manner, for example, when the program name is registered as "Dad's program", "Dad's program 1", "Dad's program 2"
Since a number can be automatically added as in the case of..., It is easy to grasp the recorded program. If the program name is registered and a program number is set so as to be added, it is not necessary to input a program name for each program, and a different program name can be easily and automatically set for each program. .

In step ST25, the program name, program recording start position and recording end position, recording mode, etc., which are the program information of the re-registered program, are registered in the memory card 20, and the process proceeds to step ST26. Is set to a new program number N, and the process returns to step ST13.

Next, when it is determined in step ST13 that the tape running has been completed, the process proceeds to step ST30, and it is determined whether the end of the tape running is due to the tape position being at the tape end. . here,
When the tape position is at the tape end and the tape running is completed, the process proceeds to step ST31. When the tape running is terminated based on a signal from the operation input unit 33, the program re-registration process is terminated.

When the process proceeds from step ST30 to step ST31, in step ST31, registration end processing is performed, and the program re-registration processing is ended. In this registration end processing, when the recording time of the program is equal to or longer than the registration minimum recording time, the tape end is set as the end position of the program, and the steps ST19 to ST19 are executed.
The same processing as in step ST25 is performed, the program information is registered in the memory card 20, and the program re-registration processing ends.

Next, the operation of the re-registration processing will be described with reference to FIG. FIG. 11A shows a program recording state of a tape, which is the same as FIG. 9A. FIG. 11B shows a detection state of the control signal CTL recorded on the tape. When the control signal CTL is at the high level “H”, the control signal CTL is detected, and the low level “L” is not detected. The state is shown.

Here, the re-registration processing of the program information is started, and the tape top is set as the recording start position of the program. When the cueing code DH is detected at time t21, the recording start position of the program may be determined based on the position where the cueing code DH is detected. At time t22, when the control signal CTL is no longer detected as the position of the full width erased portion, this position is set as the program recording end position. Further, when the recording time of the program is equal to or longer than the registration minimum recording time, the program information for the program B5, for example, the program name, the recording start position and the recording end position of the program, and the recording mode are registered in the memory card 20.

When the control signal CTL is detected at the time t23 when the full width erasure is completed, the detected position is set as the recording start position of the next program. At time t24, when the tape position is set to the position of the unrecorded portion and the control signal CTL is no longer detected, this position is set as the recording end position of the program. When the recording time of this program is equal to or longer than the registration minimum recording time, the program information for the program B1 is registered in the memory card 20.

Next, when the full width erased portion is completed at time t25 and the control signal CTL is detected, this detected position is set as the recording start position of the next program, and at time t26, the tape position is changed to the unrecorded portion. When the control signal CTL is no longer detected as a position, this position is set as a program recording end position. If the recording time of this program is not equal to or longer than the registration minimum recording time, the recording start position of the next program is detected without registering the program information on the program B2 in the memory card 20.

When the cueing code DH is detected at time t27, the detected position is set as the recording start position of the next program. Further, when the cueing code DH is detected at time t28, the recording end position of the program is set based on the detected position, and the recording start position of the next program is set based on the detected position. If the recording time of the program for which the recording end position is set is longer than the registered minimum recording time, the program B
3 is registered in the memory card 20.

When the tape ends at time t29, this position is set as the recording end position. If the recording time of the program whose recording start position has been set by the detection of the cue code at time t28 is equal to or longer than the registered minimum recording time, the program information for this program B4 is registered in the memory card 20.

As described above, by detecting the program switching point using the cue code DH and the control signal CTL, the program information of the program recorded on the tape can be re-registered in the memory card 20.

Further, during the re-registration of the program information, the position of the re-registered program on the tape is displayed on the screen of the display device 65 as shown in FIG. The progress of the registration status can be easily determined. Using this display, the registration of the program information of the unnecessary program can be stopped.

Further, since the program information is registered in the memory card 20 every time the program information of the recorded program is determined, for example, after the program information of all the recorded programs is determined, As compared with the case of writing, the capacity of the memory for holding the program information registered in the memory card 20 can be reduced.

As described above, according to the above-described embodiment, a video cassette recorded with a video tape recorder having no function of registering program information in the memory card 20 or a memory card 20 can be used. Even if the video cassette is not attached, the program information corresponding to the program recorded on the video cassette can be re-registered in the memory card 20 later. In addition, since the program information can be re-registered in the memory card 20, the re-registered program information can be used to perform the program management such as locating the recorded program, detecting a blank portion, and prohibiting overwriting. It can be carried out.

[0078]

According to the present invention, a switching point of an event recorded on a recording medium is detected, and information on the event is generated for each event and registered in the storage means. For this reason, even if the storage unit is provided on the recording medium on which the event is already recorded, the information on the recorded event can be correctly registered in the recording unit. When a switching point is detected, information of an event ending at the switching point is generated and sequentially registered in the storage means.
Information about an event can be registered in the storage unit without using a large-capacity memory or the like.

The switching point of the event is detected by determining the cue code and / or the control signal while searching the recording medium at high speed, and the recording mode of the event recorded on the recording medium is also determined. Therefore, the information on the event can be efficiently registered in the storage unit. Further, even when the cue code is erased due to overwriting of the event, the switching point of the event can be detected using the control signal.

Further, since a title for each event is generated using preset title information, a title can be easily added to each event.

Further, the amount of change in the rotation cycle of the reel caused by running the recording medium at high speed is converted into the amount of change in the running speed at the time of event recording, and the tape thickness is calculated based on the converted amount of change. The recording position for each event is determined using the calculated tape thickness and registered in the storage unit.
Therefore, it is possible to easily calculate the tape thickness in a short time and register the recording position in the storage means.

Further, since a list of recording positions for each event registered in the storage means is displayed in a list, it is possible to easily determine the registration state of the event, and to generate information on the event for each event and store the information in the storage means. When registering,
Since a warning is issued when the information about the event is already registered, it is possible to prevent the information about the event from being erroneously registered in the storage unit.

[Brief description of the drawings]

FIG. 1 is a diagram showing a video cassette 10 to which a memory card 20 is attached.

FIG. 2 is a diagram showing a configuration of a memory card 20.

FIG. 3 is a diagram showing an appearance of the video tape recorder 30.

FIG. 4 is a diagram showing a configuration of a transmission / reception processing unit 42;

FIG. 5 is a flowchart showing a program information re-registration process (1/2).

FIG. 6 is a flowchart showing a program information re-registration process (2/2).

FIG. 7 is a diagram for explaining a method of measuring a tape thickness.

FIG. 8 is a diagram for explaining a method of detecting a program switching point.

FIG. 9 is a diagram for explaining a method of determining a recording mode.

FIG. 10 is a diagram showing a program name setting display screen.

FIG. 11 is a diagram showing an operation of a program information re-registration process.

FIG. 12 is a diagram showing a program information re-registration status display screen.

[Explanation of symbols]

10: Video cassette, 20: Memory card,
Reference numeral 30: video tape recorder, 33: operation input unit, 34: display unit, 41a, 41b: antenna, 42: transmission / reception processing unit, 50: control unit, 54
... Character generator unit, 55 ... Audio output unit, 65 ... Display device

Claims (16)

[Claims] 1. A storage medium is provided on a recording medium on which an event is recorded, a switching point of an event recorded on the recording medium is detected, information on the event is generated for each event, and the storage means is stored in the storage means. An event registration method characterized by registration. 2. The event registration method according to claim 1, wherein when a switching point of the event is detected, information of an event ending at the switching point is generated and sequentially registered in the storage unit. 3. The recording medium is a tape-shaped recording medium. The switching point of the event is detected by searching for a cue code recorded on the tape-shaped recording medium while searching the tape-shaped recording medium at high speed. 2. The event registration method according to claim 1, wherein the event registration is performed by determining a control signal. 4. When detecting a switching point of the event,
2. The event registration method according to claim 1, wherein the recording mode of the event recorded on the recording medium is also determined, and the determined recording mode is registered in the storage unit as information on the event. 5. The recording medium according to claim 4, wherein the recording medium is a tape recording medium, and the recording mode is determined using a control signal recorded on the tape recording medium. Event registration method. 6. A title information can be set in advance, a title for each event is generated using the set title information, and the generated title for each event is registered in the storage unit as information related to the event. 2. The event registration method according to claim 1, wherein: 7. The recording medium is a tape-shaped recording medium wound around a reel, and a change amount of a rotation cycle of the reel caused by running the recording medium at a high speed is determined by a running speed during the event recording. , The tape thickness of the tape-shaped recording medium is calculated based on the converted amount, and the recording position for each event is determined using the calculated tape thickness. 2. The event registration method according to claim 1, wherein the recording position of each event is registered in the storage unit as information on the event. 8. The event registration method according to claim 7, wherein, when registering the information on the event in the storage unit, a list of recording positions for each of the events registered in the storage unit is displayed. 9. When detecting a switching point of the event, generating information on the event for each of the events, and registering the information in the storage unit, a warning is issued when the information on the event is already registered. The event registration method according to claim 1, wherein 10. A recording medium processing apparatus using a recording medium on which an event is recorded and a storage means is provided, wherein: a reproducing means for reproducing the recording medium; and a signal obtained by reproducing the recording medium. A control unit for detecting a switching point of the recorded event and generating information on the event for each event; communicating with the storage unit; and registering the information on the event generated by the control unit in the storage unit A recording medium processing apparatus comprising: 11. The recording medium is a tape-shaped recording medium, and in the control unit, a cueing code and / or a cue code recorded on the tape-shaped recording medium while the reproducing unit searches the recording medium at high speed. 11. The recording medium processing apparatus according to claim 10, wherein a control signal is determined, and a switching point of the event is detected based on a determination result. 12. The control means determines a recording mode of the event based on a control signal obtained by reproducing the recording medium by the reproducing means during detection of a switching point of the event, 12. The recording medium processing apparatus according to claim 11, wherein the event registration unit registers the determined recording mode as information on the event in the storage unit. 13. An operation input unit for setting title information, wherein the control unit generates a title for each event using the title information set by the operation input unit, 11. The recording medium processing apparatus according to claim 10, wherein the title for each event generated by the control unit is registered in the storage unit as information on the event. 14. The recording medium is a tape-shaped recording medium wound around a reel, wherein the control means determines the amount of change in the rotation cycle of the reel caused by running the recording medium at a high speed. Is converted to a change amount at the time of recording, a tape thickness of the recording medium is calculated based on the converted change amount, and information indicating a recording position for each event is generated using the calculated tape thickness. 11. The recording medium processing apparatus according to claim 10, wherein the event registration unit registers information indicating the recording position generated by the control unit as information on the event in the storage unit. 15. The recording medium processing apparatus according to claim 14, further comprising a display unit, wherein the display unit displays a list of recording positions of the events registered in the storage unit. 16. An alarm output means, wherein when a switching point of an event is detected by the control means, and information relating to an event is generated for each event and stored in the storage means, an event is already stored in the storage means. 11. The recording medium processing apparatus according to claim 10, wherein a warning is issued by the warning output means when it is determined by the event registration means that the information about the event has been registered.