JP5002772B2 - Recording apparatus and data generation method - Google Patents

Description

  The present invention relates to a magnetic recording / reproducing apparatus that manages contents recorded on a plurality of magnetic tapes and facilitates searching and recording reservation.

Conventionally, a method for managing a magnetic tape (hereinafter simply referred to as a tape) on which video and audio are recorded by a magnetic recording / reproducing apparatus (hereinafter referred to as a VTR) is managed by attaching an index label on which the recorded contents are written. It was common. In addition, when a plurality of programs are recorded on a single tape, a system for performing cue playback of the program to be viewed (searching for and playing the beginning of the program to be viewed by fast-forwarding or rewinding the tape) As an example, VISS (VHS Ind
ex Search System) is well known. This rewinds or fast forwards the tape while counting the number of cue signals recorded on the tape, and reproduces the tape when a desired count is reached.

  Also, there is a technique described in Patent Document 1 for displaying the contents of a tape inserted into a VTR. When tape is taken out from the VTR, information indicating the recorded contents of the tape (number of each program and its program start position, program end position, input signal type, recording date and time, recording time, recording mode, comment, etc.) is recorded on the tape. It is recorded in the upper subcode area, and this information is reproduced and displayed during reproduction.

  Furthermore, a VTR that can display the recorded contents of a plurality of tapes without inserting the tape into the VTR has been commercialized (manufactured by Matsushita Corporation; NV-BX25). This is because the recorded content of each tape is stored in the VTR main unit during recording, and the tape number is identified by the bar code label attached to each tape during playback, and the recorded content of the tape is recalled from the memory and displayed. In addition, cueing is performed by the above-described VISS.

  In order to make a recording reservation for reserving a program to be recorded, a user inputs a date or day of the week to be recorded, a channel, a recording time, a recording mode, or the like, or inputs a program code unique to a program called a G code. The method is common.

JP-A 64-13278

  By the way, the above-described conventional method for managing the tape by writing the recording contents on the index label described above is troublesome, and it is necessary to rewrite the index label when recording is performed again. Also, when cueing using a method such as VISS, it is necessary to remember what number on the tape the program you want to watch or write it on the index label. There is a problem of being bad.

  Further, in the technique disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 64-13278, in order to display the tape contents, it is necessary to insert the tape into the VTR one by one. There is a problem that it takes time to search.

  In addition, the above-described method for identifying a tape with a bar code label requires a mechanism and a circuit for reading the bar code, leading to a cost increase.

  Furthermore, in order to make a recording reservation, it is very troublesome for the user to input the date, time, and other data one by one. On the other hand, although the method of recording reservation by inputting the G code is simple, the G code is meaningless code for the user, so a code table with program code is required separately. There is a problem that it cannot be applied when the G code is not known.

  Therefore, the technical problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, and the object is to create a VTR that can easily search for a plurality of tapes and make a recording reservation. It is to provide.

  To achieve the above object, according to the present invention, a memory means for storing the recording contents of a plurality of magnetic tapes, a tape number is identified on the basis of the date and time code recorded on the magnetic tape, and the corresponding tape recording is performed. Means for reading the contents from the memory means and displaying them, and means for selectively cuing or program reservation from the displayed recorded contents are provided.

  In the present invention, the recorded contents of a plurality of magnetic tapes can be stored and displayed by the VTR itself, so that the user can easily know the recorded contents of each tape and use the displayed stored contents. Thus, it is possible to easily find a program or to make a recording reservation.

  According to the present invention, information signals such as date, time, title, and time code are multiplexed on a video signal and recorded on a tape, and these information signals can be stored in a memory in a VTR and displayed in a table of contents. Therefore, the user can know the contents recorded on the tape without inserting and reproducing the tape one by one.

  Further, since the tape number is identified based on information such as date, time, or time code, a conventional bar code reader is not required.

  Furthermore, by selecting a program while viewing the table of contents display, it is possible to cue the program and input a recording reservation, so that these operations can be simplified.

  In general, it is possible to realize an easy-to-use VTR in which tape management and tape content search are easy and reliable, program cueing and recording reservation are extremely easy, and its value is great.

1 is a block diagram showing a main circuit configuration of a VTR according to a first embodiment of the present invention. It is a process flowchart figure of the whole operation | movement of VTR by 1st Example of this invention. FIG. 3 is a flowchart showing details of a preliminary reproduction operation process in the flowchart of FIG. 2. FIG. 3 is a flowchart showing details of a recording operation process in the flowchart of FIG. 2. It is explanatory drawing which shows an example of the display screen output from the output terminal 31 in VTR of FIG. It is a flowchart figure which shows the detail of the process of the rewinding operation | movement in the flowchart of FIG. FIG. 3 is a flowchart showing details of a fast-forward operation process in the flowchart of FIG. 2. FIG. 3 is a flowchart showing details of a reproduction operation process in the flowchart of FIG. 2. The flowchart which shows the detail of an example of the process of the video recording reservation operation | movement in the flowchart of FIG. It is a flowchart figure which shows the detail of another example of the process of the video recording reservation operation | movement in the flowchart of FIG. It is a flowchart figure which shows the detail of another example of the process of the video recording reservation operation | movement in the flowchart of FIG. It is a flowchart figure which shows the detail of another example of the process of the video recording reservation operation | movement in the flowchart of FIG. FIG. 3 is a flowchart showing details of a table of contents creation operation in the flowchart of FIG. 2. It is a block diagram which shows the principal part circuit structure of VTR which concerns on 2nd Example of this invention. It is a flowchart figure which shows the detail of a process of the video recording operation | movement by 2nd Example of this invention. It is a flowchart figure which shows the detail of a process of the program list display operation | movement in broadcast by 2nd Example of this invention. It is a block diagram which shows the principal part circuit structure of VTR which concerns on 3rd Example of this invention.

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

  First, a first embodiment of the present invention will be described. FIG. 1 is a block diagram showing a main circuit configuration of a VTR according to the first embodiment of the present invention.

In FIG. 1, 11 is a tape (magnetic tape), and 9 and 10 are reels for winding the tape 11. 29 is a TV broadcast signal input terminal, 5 is a TV tuner for receiving a TV broadcast signal from the input terminal 29, 30 is a video signal input terminal from an external device such as a video camera or other VTR, Reference numeral 6 denotes a switch circuit that switches and outputs video signals from the tuner 5 and the input terminal 30. Reference numeral 1 denotes a video signal input switching control circuit that controls channel selection in the tuner 5 and switching of the switch circuit 6.

2 is a date / time signal generating circuit, 3 is a time code signal generating circuit, 4 is an information signal recording processing circuit, and selection information of an input signal from the video signal input switching control circuit 1 and a date / time signal generating circuit 2 The date / time information and the time code signal from the time code signal generating circuit 3 are input, and these information signals are output in accordance with a predetermined recording format. Reference numeral 7 denotes an information signal multiplexing circuit, which is a vertical blanking period of video signals from the switch circuit 6 (
The information signal from the information signal recording processing circuit 4 is multiplexed during a period in which there is no image signal including the vertical synchronization signal.

  Reference numeral 8 denotes a video signal recording / reproduction processing circuit. During recording, the video signal from the information signal multiplexing circuit 7 is frequency converted to a recordable signal, and during reproduction, the reproduction signal is subjected to inverse frequency conversion. Reference numerals 12 and 13 denote magnetic heads which convert a recording electric signal from the video signal recording / reproducing processing circuit 8 into a magnetic signal and record it on the tape 11, and convert a reproducing magnetic signal from the tape 11 into an electric signal. Output to the video signal recording / reproduction processing circuit 8.

  A switch circuit 15 switches between a recorded video signal input to the video signal recording / reproduction processing circuit 8 and a reproduced video signal output from the circuit 8 for output. Reference numeral 33 denotes a blue back generation circuit that generates a signal for making the entire screen blue. Reference numeral 32 denotes a switch circuit that switches between an output from the switch circuit 15 and an output from the blue back circuit 33 for output. Reference numeral 19 denotes a character signal generation circuit, and reference numeral 18 denotes a character signal addition circuit, which adds the character signal from the character signal generation circuit 19 to the video signal from the switch circuit 32. Reference numeral 31 denotes an output terminal for outputting a video signal from the character signal adding circuit 19.

  A video signal presence / absence detection circuit 16 receives an output signal from the switch circuit 15 and detects the presence / absence of a video signal. An information signal reproduction processing circuit 17 receives the output signal from the switch circuit 15 as an input, and reads and outputs the information signal multiplexed on the video signal from the switch circuit 15.

A control signal recording processing circuit 22 generates a control signal for controlling the running of the tape 11, and adds information such as a cue signal by changing the pulse width of the control signal. A control head 14 records and reproduces a control signal. A control signal reproduction processing circuit 23 reads the reproduced control signal and discriminates added information such as a cue signal. Reference numeral 21 denotes a switch circuit, which outputs a recording control signal from the control signal recording processing circuit 22 to the control head 14 when recording a control signal, and outputs a reproduction control signal from the control head 14 to the control signal when reproducing the control signal. The data is output to the reproduction processing circuit 23.

  24 is a tape insertion detection circuit that detects that the tape 11 has been inserted into the main VTR, 25 is a reel rotation number detection circuit that detects the rotation number of the reels 9 and 10, and 37 is an erroneous erasure prevention mode detection circuit. It is detected whether the tape 11 inserted in is in the erroneous erasure prevention mode by cutting a claw in a tape case (not shown) or opening / closing a sliding lid. Reference numeral 27 denotes an operation unit for the user of the VTR to operate the operation of the VTR, and 28 denotes a display unit for notifying the user of the operation state of the VTR.

  A system control circuit 26 controls the overall control. The system control circuit 26 controls the operation of each part of the VTR and has a clock and calendar function for generating current time and date information. Reference numeral 20 denotes a memory which can read and write various information data under the control of the system control circuit 26. Note that the minimum necessary circuit elements including the memory 20 and the system control circuit 26 are supplied with a power supply current by a sub power supply for sleep mode or the like even when the main power supply is shut off. The memory 20 is more preferably a non-volatile semiconductor memory means such as a battery-backed RAM or EEPROM.

In this embodiment, the generated time code is reset at the beginning of the tape, and takes a value representing hour, minute, second and frame number corresponding to the running time of the tape.

  Here, as a technique for multiplexing an information signal during a vertical blanking period of a video signal, for example, there are many time codes (VITC; Vertical Interval Time Code) in commercial VTR, text broadcasting, chapter information in a laser disk, etc. Since the technology is generally known, a detailed description thereof is omitted here.

  Next, the operation of this embodiment will be described with reference to the flowchart of FIG.

  FIG. 2 is a flowchart showing the overall operation of this embodiment, and the overall processing flow is controlled by the system control circuit 26. First, the operation when recording is performed on the tape 11 in which no signal is recorded by the VTR of this embodiment will be described.

  In step ST1, when the user first instructs to turn on the power, the system control circuit 26 turns on the power of the VTR. At the time of purchasing this VTR, since no data is written in the memory 20, the user does not request the full table of contents display in step ST2, so the system control circuit 26 does not perform the full table of contents display process in step 3. The process moves to step ST4. Furthermore, since the tape 11 is not inserted into the VTR at first, the system control circuit 26 advances the process to step ST5. When the tape 11 is inserted into the main VTR by the user, the tape insertion detection circuit 24 detects this, and the system control circuit 26 receives it, and the system control circuit 26 detects the preliminary reproduction (step ST6) and the information signal (step ST7). I do.

  Here, the preliminary reproduction (step ST6) will be described. FIG. 3 is a flowchart showing details of the preliminary reproduction processing in step ST6, which is common to the preliminary reproduction processing in steps ST10, ST30, and ST33 in FIG.

When the preliminary reproduction process is started, first, traveling for tape reproduction is started (step ST301). The mechanism for running the tape is not shown in FIG. The signals reproduced from the tape 11 by the magnetic heads 12 and 13 are subjected to reproduction processing by the video signal recording / reproduction processing circuit 8, and an information signal is extracted by the information signal reproduction processing circuit 17 and output to the system control circuit 26. . In the process of step ST302, the system control circuit 26 reads the reproduced information signal from the information signal reproduction processing circuit 17. At this time, the system control circuit 26 controls the switch circuit 32 and outputs a blue back signal for making the entire screen one blue color from the blue back generation circuit 33 to the output terminal 31 via the character signal addition circuit 18. Therefore, the video signal reproduced by the preliminary reproduction process is not output to the output terminal 31. In any case, since the preliminary reproduction operation is intended to read the information signal, it is not necessary to output the video signal, thereby preventing the user from seeing an unnecessary video and giving a sense of incongruity.

  As a result of reading the information signal, when the time code is multiplexed on the reproduction signal, the system control circuit 26 presets the read time code value in the time code signal generating circuit 3 (steps ST303 and ST304). When the time code is not multiplexed on the reproduction signal, the system control circuit 26 calculates the tape running time from the reel rotation speed as the output information of the reel rotation speed detection circuit 25, and converts this value into the time code. Preset in the time code signal generation circuit 3 (steps ST303 and ST305). At this time, if the calculated value from the reel rotation number is less accurate than the time code, for example, the number of frames may not be calculated and the hour, minute, and second values may be preset.

  When the preliminary reproduction operation is performed for a predetermined period (for example, 1 second), the system control circuit 26 automatically ends the tape running (steps ST306 and 307).

  With the above operation, the information signal at the current tape position can be read, and the time code signal generation circuit 3 is preset. For example, when an information signal including a video signal and a time code is already recorded on the inserted tape, and a program is recorded following this tape, a time code continuous from the time code value preset in the preliminary reproduction is used. Since the value is generated and recorded, the continuity of the time code is maintained. In addition, when recording in a portion where no time code is recorded, a time code value corresponding to the tape running time is recorded. For example, a plurality of programs with a non-recorded portion sandwiched on one tape. Even when is recorded, time code values do not overlap.

  In step ST7 of FIG. 2, the system control circuit 26 determines whether or not an information signal has been detected as a result of the preliminary reproduction operation in step ST6 described above. If not detected, the process proceeds to step ST50. In step ST50, the video signal presence / absence detection circuit 16 detects whether or not the video signal is being reproduced, and outputs the result to the system control circuit 26. Then, the system control circuit 26 determines whether the video signal is detected by the video signal presence / absence detection circuit 16 as a result of the preliminary reproduction. If a video signal is detected in step ST50, the process proceeds to step ST14. If no video signal is detected in step ST50, the tape is automatically rewound to the beginning, and preliminary reproduction (step ST10) and information signal detection (step ST11) are performed. If no information signal is detected, the system control circuit 26 detects whether or not the inserted tape 11 is in the erroneous erasure prevention mode based on the output of the erroneous erasure prevention mode detection circuit 37 in step ST14. .

  Since the information signal and the video signal are not detected on the non-recorded tape and the erroneous erasure prevention mode is not set, the system control circuit 26 advances the process to step ST18. If recording is to be performed for the first time on a new tape, the user instructs tape registration in step ST18 before recording. In response to this, the system control circuit 26 moves the process to step ST19 and assigns the smallest number that has not been used so far as the tape number for the inserted tape 11. Since this is the first tape of this VTR, the number “1” is assigned. Since the tape 11 is a non-recorded tape, the user does not perform the table of contents creation process in step ST20, and the process proceeds to step ST26.

  Steps ST26 to ST39 are processes selectively performed according to a user instruction. When the user instructs playback, rewinding, fast-forwarding, recording reservation, title input, or recording by the operation unit 27, each instruction is performed in steps ST26, ST28, ST31, ST34, ST36, ST38, respectively. An input is detected, and each process is performed in step ST27, or ST29 and ST30, or ST32 and ST33, or ST35, or ST37, or ST39.

  In this embodiment, the user can input the title of the program to be recorded (ST36 and ST37). That is, when the user inputs a title input from the operation unit 27, this is detected in step ST36, and the title input by the operation unit 27 is temporarily held in the system control circuit 26 (step ST37). ).

  Although not shown in FIG. 2, in this embodiment, the user can input the genre of the program in the same manner as the input of the program title. In this case, when the user instructs genre input from the operation unit 27, the system control circuit 26 displays a list of predetermined program genres (for example, sports, music, movies, culture, variety, documentary, etc.). Or a superimpose on the output video signal by the character signal generation circuit 19 and the character signal addition circuit 18 to display a list of genres on the monitor. Thereby, the user selects a desired genre from the displayed genre list by the operation unit 27. The system control circuit 26 holds the selected genre as one piece of program data.

  The program title and genre held in the system control circuit 26 are stored in the memory 20 as a part of program data at the time of recording if the program is not recorded. If the program has been recorded, it is additionally stored in the corresponding program data stored in the memory 20. Thus, if the user does not have time to input a title or genre before recording the program, the user can input these after recording the program.

  When a recording instruction is input from the operation unit 27 by the user, the system control circuit 26 detects it in step ST38 and performs a recording process (step ST39). Here, the recording process will be described.

FIG. 4 is a flowchart showing details of the recording process in step ST39. When the recording process is started, the tape number already assigned in step ST19 of FIG. 2 ("1" as described above in the description here) by the process of the system control circuit 26,
The title information and genre information already input in step ST37 of FIG. 2, the type of input signal such as date and time of start of recording, day of the week, time code value, channel, and recording mode such as standard or long time are stored in the memory 20. Is automatically stored (step ST401).
Note that the day of the week does not necessarily have to be stored in the memory 20, and after reading the date from the memory 20, the day of the week may be calculated from the date as necessary. Next, at the same time when the tape running for recording is started, the time code counting by the time code signal generating circuit 3 is started. Further, the system control circuit 26 controls the control signal recording processing circuit 22 and records the cue signal on the tape by the control head 14 (step ST402).

  During recording, a video signal obtained by multiplexing information signals such as date and time, type of input signal such as channel, and time code is recorded on the tape 11 (step ST403). When the end of recording is instructed in step ST404, the system control circuit 26 stops the tape running by the process of step ST405 and simultaneously stops the time code counting operation. Subsequently, the time code value at the end of recording, the date and time, the day of the week, the time from the start to the end of recording calculated from these values, and the remaining tape time are stored in the memory 20 (step ST406), and the recording process is performed. finish.

  In FIG. 2, when taking out the tape from the VTR, the user instructs removal of the tape 11 from the operation unit 27 in step ST40. In response to this instruction, the system control circuit 26 takes out the tape 11 and displays the tape number on the display unit 28 by the processing of step ST41, or controls the character signal generation circuit 19 to control the tape by the character addition circuit 18. Superimpose numbers to video signal output. As a result, the user can know the tape number of the tape that has been taken out, so that after the tape has been taken out, the work of writing the tape number in the tape case or pasting the number sticker can be easily performed.

  Thereafter, in step ST42, when the user instructs to turn off the power from the operation unit 27, the system control circuit 26 turns off the power of the VTR and ends all the processes.

  Next, a case will be described in which recording is performed on a plurality of tapes in this way, and then they are reproduced by the present VTR.

  In step ST5 of FIG. 2, when the tape insertion detection circuit 24 detects that the user has inserted the tape 11, the system control circuit 26 performs the preliminary reproduction process in step ST6. As a result, when an information signal is detected in step ST7, the system control circuit 26 compares the information signal reproduced in the information signal reproduction processing circuit 17 with the information signal stored in the memory 20, and matches. Search for data. That is, the memory 20 stores the date and time code at the start of recording of the program recorded in the past with this VTR, the date and time code at the end of recording, the title, channel, recording mode, tape number, etc. These are compared with the date and time code value of the information signal being reproduced, which is the output from the information signal reproduction processing circuit 17, to search for the corresponding program data (step ST8).

  When the corresponding program is found in this way (step ST9), the system control circuit 26 reads the tape number of the program data from the memory 20 and identifies the tape number (step ST15). Since the tape 11 was sent before the recorded part at the time of preliminary reproduction in step ST6, the information signal and the video signal were not detected in steps ST7 and ST50, or the corresponding program was not searched in step ST9. In step ST10, the magnetic tape 11 is automatically rewound to the beginning, and preliminary reproduction is performed again. In steps ST12 and ST13, the same search as in steps ST8 and ST9 is performed again. This can prevent erroneous recognition of a registered tape as an unregistered tape.

  When a tape recorded with another VTR that cannot multiplex and record information signals is reproduced with this VTR, a video signal is detected at step ST50, and the process is automatically performed at step ST14. Move on.

  After the tape number is identified in step ST15, the system control circuit 26 displays the tape number by the process of step ST23, and displays a list of program data of the same tape number stored in the memory 20 as a table of contents. . This display method may be displayed on the display unit 28 or may be superimposed on the video signal output by the character signal generation circuit 19 and the character signal addition circuit 18.

  Items to be displayed in the table of contents include the title of each program, genre, recording start date / time, end date / time, time code value, channel, recording time, recording mode, time remaining on the tape in the non-recorded part, etc. The more it is displayed, the more information the user can get about the program. When there is a limit to the area that can be displayed, the information is selectively displayed from these pieces of information. FIG. 5 shows a display example of the table of contents. In FIG. 5, for a program in which title information is input by the user, the title and the recording date and day of the week are displayed. For a program in which no title information is input, the recording start date, day of the week and time, and channel are displayed. Input selection information such as is displayed. If such a display is performed, the user can infer the contents of a program for which no title has been input from the date / time of the table of contents display, the day of the week, and the channel.

  When the table of contents is displayed, the user can designate the program to be viewed by the operation unit 27 (designate the cue program number) in step ST24 of FIG. In response to this, the system control circuit 26 performs a cueing operation for a desired program in the process of step ST25.

  Next, this cueing operation will be described in detail. An output signal from the control head 14 is supplied to the control signal reproduction processing 23 via the switch circuit 21, and a cue signal written at the beginning of each program included in the control signal is output to the system control circuit 26. The The system control circuit 26 fast-forwards or rewinds the tape 11 while counting the cue signal. The system control circuit 26 compares the pre-reproduced information signal with the program data in the memory 20 to determine which program the current tape reproduction position is displayed in the table of contents, and the user wants to see. The magnetic tape 11 is fast-forwarded or rewinded as necessary while counting the cue signal to the desired program, and playback is performed when the desired count is reached.

  As another method of the cueing operation, there is a method in which the position of the tape is calculated from the reel rotation speed from the reel rotation speed detection circuit 25 and fast-forwarding or rewinding to a desired position is performed. Further, in combination with these methods, more accurate cueing can be quickly performed by using the time code recorded on the tape.

  After cueing has been performed, the process proceeds to step ST27, where reproduction is automatically performed. Therefore, the cue playback is automatically performed only by selecting the program that the user wants to watch on the displayed table of contents.

  When the user instructs the rewinding of the tape 11 by the operation unit 27, the system control circuit 26 detects the instruction in step ST28 and performs the rewinding process in step ST29. FIG. 6 is a flowchart showing details of the rewinding process in step ST29. When the tape rewinding operation is started in step ST601 and the end of rewinding is instructed in step ST602, the tape rewinding operation is stopped in step ST603. In FIG. 2, after completion of the rewinding operation, a preliminary reproduction operation is automatically performed in step ST30 to read the information signal.

  The same applies to the fast-forward operation, and the fast-forward operation and the preliminary reproduction operation are performed in steps ST31, ST32, and ST33 in FIG. FIG. 7 is a flowchart showing details of the fast-forward operation process in step ST32. The processing of FIG. 7 is almost the same as that of FIG. 6, and the processing operation is obvious from FIG.

  As described above, after the rewinding operation and the fast-forwarding operation of the tape 11, the system control circuit 26 automatically performs the preliminary reproduction, reproduces the information signal, and reads the time code, the date, etc. Since the user can detect the playback position and program data, the user can know the information without performing playback instruction after rewinding or fast-forwarding. Further, when the table of contents display and the cue playback of the program are subsequently performed, it is not necessary to perform the preliminary reproduction, so that the processing time can be shortened.

  In FIG. 2, when the user instructs the reproduction of the tape 11 by the operation unit 27, the system control circuit 26 detects the instruction at step ST26 and performs the reproducing operation at step ST27. FIG. 8 is a flowchart showing details of the reproduction processing in step ST27. Playback processing is started in step ST801, and the title of the program being played back, the recording date and time, the time code value, and the tape address by the processing of steps ST802 and ST803 when the user gives an instruction from the operation unit 27. Information signals such as information can be displayed on the monitor screen or display unit 28 for viewing. Further, the contents recorded on the tape can be displayed in a table of contents while being reproduced by the processes of steps ST804 and ST805. Further, the cueing operation can be continuously performed by the processes of steps ST806, ST807, and ST808.

  In FIG. 2, when the user gives an instruction for recording reservation through the operation unit 27, the system control circuit 26 detects the instruction in step ST34, and moves the process to step ST35. The user inputs the date / time, channel, recording mode, and the like of the program to be recorded through the operation unit 27. In this case, a program code such as a G code may be input. After the user makes a recording reservation, the system control circuit 26 generates a recording start command at the reserved date and time, detects the command in step ST38, and starts the recording operation.

FIG. 9 is a flowchart showing details of the recording reservation operation processing in step ST35. In step ST902, the user inputs a date or day of the week to be recorded, a recording start time, a recording time or a recording end time, a channel, a recording mode, and the like through the operation unit 27. Of course, instead of these, the user may input a program code called a G code. When data for recording reservation is input, the system control circuit 26 searches the memory 20 and searches for program data that matches the input day of the week, time, and recording time (step ST903).
When matching program data is found in the memory 20, the title name of the program is read and displayed superimposed on the video signal output or output to the display unit 28 for display (step ST905). As a result, if the displayed title matches the title of the program to be reserved for recording, the operation unit 27 instructs that in step ST906 and registers the title as recording reservation data (step ST909). When there is no matching program data in the memory 20, or when the displayed title is different from the title of the program to be reserved for recording, the user inputs the program title from the operation unit 27 through the processing of steps ST907 and ST908. Will be performed.

  If a plurality of matching program data are searched in the process of step ST904, those program titles are displayed at once or sequentially in step ST905, and the user can select a desired program title with the operation unit 27. May be selected.

  As described above, according to the processing of FIG. 9, the program title that has been input before is automatically displayed for the program of the same time and the same channel on the same day of the week. is there.

  FIG. 10 is a flowchart showing details of another example of the recording reservation process in step ST35. In the processing flow of FIG. 10, in steps ST1009 and ST1010, the user can input from the operation unit 27 whether or not to register the input program title. When the user instructs registration, the system control circuit 26 adds information indicating registration (for example, a flag of “0” or “1”) to the program data and stores it in the memory 20 at the time of recording. . In the memory search process ST1004 from the next time, only the registered program data is searched. The other processing operations are the same as those in FIG.

  Thus, according to the processing of FIG. 10, the user can select whether or not to register a program title. Therefore, for example, when recording a program that is broadcast continuously every week, it is convenient to specify that the program title is registered and the input program title is not registered for a one-time broadcast program.

  FIG. 11 is a flowchart showing details of still another example of the recording reservation process in step ST35. The processing flow of FIG. 11 is for making a recording reservation by selecting a program from the table of contents display of programs recorded in the past. In step ST1101, if the user instructs the operation unit 27 to make a recording reservation on the table of contents screen, the system control circuit 26 performs a process of step ST1102 to determine the program recorded on the tape 11 currently inserted. Data is read from the memory 20 and displayed in a table of contents. While viewing this table of contents display, the user inputs the desired program number via the operation unit 27 in step ST1103. If there is no desired program in the table of contents display, the user can designate the program number using the table of contents display of the program recorded on another tape by the processing of steps ST1104, ST1105, and ST1106. When the program is designated, the system control circuit 26 reads the designated day of the week, time, channel, recording time, recording mode, program title, and genre from the memory 20 in step ST1107 and sets it as recording reservation data.

  Through the processing of FIG. 11, the user can easily make a recording reservation using the program data recorded so far. Further, since the program table of contents of the tape currently inserted in the VTR is displayed first, for example, when a program broadcast every week on one tape is continuously recorded, the reservation procedure becomes simpler and convenient.

FIG. 12 is a flowchart showing details of still another example of the recording reservation process in step ST35. The processing flow of FIG. 12 is for making a recording reservation on the table of contents screen. In step ST1201, if the user instructs the operation unit 27 to make a recording reservation on the table of contents screen, in step ST1202, the system control circuit 26 searches the data in the memory 20, and the program matches the day of the week, time, and title. Search for data and the number of past recordings (
Alternatively, a list of program data of programs with a large number of reserved recordings may be displayed. If it cannot be displayed at one time, it may be divided and displayed. Then, in step ST1203, the user selects a desired program from the display contents by using the operation unit 27. In step ST1204, the system control circuit 26 then selects the day, time, channel, The recording time, recording mode, program title, and genre are read out as recording reservation data.

  Thus, according to the processing of FIG. 12, the user does not need to input reservation data for programs that have been recorded (or reserved recording) in the past, and programs with high recording frequency are preferentially displayed in the table of contents. Therefore, the reservation recording procedure is very simple and convenient.

  The example of selecting a reserved program by displaying a table of contents by tape or by recording frequency has been described above, but other previously recorded program data by day of the week, channel, program genre, or in order of recording date. It is also conceivable to select the reserved program by displaying the table of contents, and it is obvious to those skilled in the art that these can be easily realized by changing the processing by the system control 26 in FIG.

  When the user has instructed to display the entire table of contents with the operation unit 27 in step ST2 of FIG. 2 in the state where the recording has been completed on the plurality of tapes 11 with the present VTR, the system control circuit 26 performs the process of step ST3. The program data is read from the memory 20, and the table of contents of the recorded program is displayed for each tape. Therefore, the user can know the contents of the program recorded on each tape without inserting and reproducing a plurality of tapes one by one into the VTR.

  When the user turns off the power in step ST42, the latest information signal reproduced last is held in the system control circuit 26 or the memory 20. By doing this, when the user turns off the power while the tape 11 is inserted into the main VTR and turns on the power again in step ST1, the last information signal is retained. There is no need to perform preliminary reproduction and tape number identification again. In this case, after the power is turned on again, the system control circuit 26 detects from the output from the tape insertion detection circuit 24 that a tape has been inserted in step ST4 and moves the process to step ST16. Tape identification processing can be omitted, and processing can be simplified.

  Next, a case where a tape recorded with another VTR having the same function as the main VTR is reproduced with the main VTR will be described.

  In this case, the information signal is recorded on the tape 11, but the corresponding program data is not stored in the memory 20, so the user first creates the table of contents data.

  In the preliminary reproduction steps ST6 and ST10 after the tape 11 is inserted, the recorded information signal is reproduced, but the corresponding data is not stored in the memory 20. Therefore, no coincidence data is detected in steps ST9 and ST13. The process moves to step ST18. Here, when the operation unit 27 instructs the user to perform tape registration, the system control circuit 26 assigns a new tape number in step ST19. Next, when the user instructs the creation of a table of contents from the operation unit 27 in step ST20, the system control circuit 26 performs a table of contents creation process in step ST21.

  FIG. 13 is a flowchart showing details of the table of contents creation processing in step ST21. The processing flow of FIG. 13 will be described. In step ST1301, the system control circuit 26 first rewinds the tape 11 to the beginning. Subsequently, after variable N representing the serial number of the program is initialized to 1 in step ST1302, tape playback is started in step ST1303. Step ST1304 is processing for detecting the beginning of a program. Specifically, the control signal recorded by the control head 14 at the time of recording is reproduced by the head 14 and the control signal reproduction processing circuit 23, and the cue signal added to the control signal is detected. Instead of detecting the cueing signal, a part where the date and time of the information signal is discontinuous may be detected. When the system control circuit 26 detects this beginning portion of the program, it stores the tape number and the information signal of the beginning portion of the program in the memory 20 in step ST1305. At this time, if no time code is recorded, the tape running time calculated from the reel rotation is stored in the memory 20.

When the user wants to input a program title (or genre, or both of them, the same applies hereinafter) while watching the reproduced video signal, the user instructs that in step ST1306. In step ST1307, the system control circuit 26 stores the title information input by the user from the operation unit 27 in the memory 20. When the user does not input a title, this process is omitted. The system control circuit 26 then increments the program number N in step ST1308, and starts cueing the next program in step ST1309. During this time, if the tape end is not detected in step ST1310, the process returns to step ST1304 to repeat the above-described operation, and the data is sequentially stored in the memory 20 for each recorded program.

  Through the above operation, program data recorded on the tape is sequentially stored in the memory 20. A table of contents can also be created for a tape on which no time code is recorded. Also, in the process of step ST1305, when the beginning of the (N + 1) th program is detected, information at the end of recording of the Nth program and the recording time are calculated and stored in the memory 20, and these are displayed when the table of contents is displayed. The information may be displayed. Since the title can be input separately in steps ST36 and ST37 in FIG. 2, the processes in steps ST1306 and ST1307 may be omitted.

  FIG. 14 is a block diagram showing a main circuit configuration of a VTR according to the second embodiment of the present invention. In the figure, 34 is an information signal presence / absence detection circuit for detecting whether or not an information signal is multiplexed on an input signal, and 35 is an information signal from the information signal recording processing circuit 4 according to the output result of the information signal presence / absence detection circuit 34. Is a switch circuit for controlling whether or not to output to the information signal multiplexing circuit 7, and 36 is a title signal generation circuit. The other components are the same as those in the embodiment of FIG. 1, and the same parts are denoted by the same reference numerals, and the description thereof is omitted.

  In the embodiment of FIG. 1, the information signal such as date, time, program title, etc. is generated inside the VTR or input by the user and multiplexed on the video signal. It is conceivable that a video signal in which an information signal is multiplexed in advance is input to this VTR by the above processing (for example, processing of a broadcasting station or processing of a video signal generation source such as another VTR). In the following description, there will be described a case where video signals input to a VTR include information signals such as date, time, and program title that are multiplexed in advance and those that are not multiplexed.

  In the embodiment shown in FIG. 14, the information signal is multiplexed in the VTR for a video signal input in which no information signal is multiplexed, and the video signal input in which the information signal is pre-multiplexed in the VTR. The recording is performed without multiplexing the information signal.

  FIG. 15 is a flowchart showing the operation of the recording process in the second embodiment. In step ST1502, the system control circuit 26 detects whether or not the information signal is multiplexed on the input video signal based on the output from the information signal presence / absence detection circuit 34. If the information signal is multiplexed, the switch circuit 35 Is controlled so that the information signal multiplexing circuit 7 does not multiplex information signals such as the type of input signal, channel, date, time, and title (step ST1503). However, the time code signal is multiplexed at a position (for example, a position separated by several scanning lines) different from the information signal already multiplexed within the vertical blanking period. If no information signal is detected, on the other hand, in step ST1505, the information signal generated in the VTR, such as the type of input signal, channel, date, time or title signal input by the user, is multiplexed with the video signal. The switch circuit 15 is controlled every time a signal to be recorded is output (the upper terminal in FIG. 14 is selected), the information signal read by the information signal reproduction processing circuit 17, the time code value, the tape address information, the recording mode, etc. Is stored in the memory 20 and program data is created (steps ST1504, ST1506, ST1509).

  According to the processing of FIG. 15 according to the second embodiment, when program information is multiplexed in advance by processing of a broadcasting station or the like, this is automatically stored in the memory 20 as program data. Therefore, in this case, the user does not need to input a title or the like, which is convenient because the procedure for creating a table of contents can be simplified. Therefore, the user only has to input these as required only when the program information is not multiplexed.

FIG. 16 is a flowchart of the process for displaying the table of contents of the program data being broadcast by the VTR according to the second embodiment. When detecting the processing execution instruction of the user in step ST1601, the system control circuit 26 switches the information signal multiplexed on the video signal of each channel by the information signal reproduction processing circuit 17 while sequentially switching the channels of the TV tuner 5. The contents are read and stored in the memory 20, and the contents are displayed superimposed on the video signal or displayed on the display unit 28 (steps ST1603, ST1604, ST1605). When the user wants to check the broadcast contents broadcast on each channel, it was troublesome because the user had to make a decision by looking at the broadcast contents while switching the channel by himself. In the case of broadcasting, the contents of the program were not known. However, according to the processing of FIG. 16, the channel is automatically searched sequentially and the program contents are obtained from the information signal multiplexed on the video signal by the broadcasting station. You can display a list of characters.

  The details of the circuit operation and operation processing of other parts of the second embodiment of FIG. 14 are the same as those of FIGS. 1 to 13 described in the first embodiment. Therefore, the description thereof is omitted to avoid duplication.

  FIG. 17 is a block diagram showing the main circuit configuration of the VTR according to the third embodiment of the present invention. In the second embodiment of FIG. 14, it is detected whether or not the information signal is multiplexed on the input signal, and the multiplexing of the information signal in the VTR is controlled. However, the third embodiment of FIG. The multiplexed information signal is read, and the data read at the time of recording on the tape can be multiplexed again.

  In FIG. 17, an input signal to the information signal multiplexing circuit 7 is connected to the upper terminal of the switch circuit 15, and the information signal reproduction processing circuit 17 is already multiplexed with the video signal input to the VTR. Read the information signal. When recording on the tape 11, the date, time, and program title data read by the information signal reproduction processing circuit 17 are loaded into the date / time signal generation circuit 2 and the title signal generation circuit 36, respectively. A time code is added to this and multiplexed on the video signal. That is, the date, time, and program title are multiplexed with the same information that was previously multiplexed on the input signal. At this time, if the information signal read from the input signal is temporarily held and multiplexed in the next vertical blanking period, it is recorded on the tape 11 without changing the position of the scanning line on which the information signal is multiplexed. be able to.

  According to the third embodiment, since the information signal is newly recorded when recording, it is possible to prevent malfunction due to the waveform deterioration of the information signal. At that time, the date and time and title information are recorded as they are, but the time code is recorded with a value corresponding to the position information of the recording tape. For example, recording is performed with a video camera integrated VTR having a function of multiplexing information signals. For example, when recording the recorded video while editing with this VTR, the recording date and time and title are not changed, but the tape can be managed by time code.

2 Date / time signal generation circuit 3 Time code signal generation circuit 4 Information signal recording processing circuit 7 Information signal multiplexing circuit 8 Video signal recording / reproduction processing circuit 11 Magnetic tape 12, 13 Magnetic head 17 Information signal reproduction processing circuit 18 Character signal addition Circuit 19 Character signal generation circuit 20 Memory 26 System control circuit 34 Information signal presence / absence detection circuit 36 Title signal generation circuit

Claims (2)

A recording device for receiving and recording broadcast signals,
A tuner for receiving and selecting a broadcast signal broadcast from a broadcast station in which the program date and time information and title information are multiplexed in advance with the video information of the program;
An extraction circuit for extracting the date and time information and title information of the program multiplexed on the video information of the program selected from the broadcast signal by the tuner;
The video information of the program selected from the broadcast signal by the tuner, the date and time information and title information of the program extracted by the extraction circuit, and the time used during playback generated by the time information generating means of the recording device And a multiplexing circuit that multiplexes information to generate recording data. A data generation method in a receiving device for receiving a broadcast signal,
A reception / tuning step of receiving and selecting a broadcast signal broadcast from a broadcast station in which the program date and time information and title information are multiplexed in advance with the video information of the program;
An extraction step for extracting the date and time information and title information of the program multiplexed in the video information of the program selected from the broadcast signal in the reception and channel selection step;
Generating time information used in reproduction in the receiving device;
In the video information of the program selected from the broadcast signal in the reception / channel selection step, the program date and time information and title information extracted in the extraction step are multiplexed with the generated time information used at the time of reproduction. A data generation method comprising: a multiplexing step for generating data.

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