JPH0221480A - Tape cassette managing system - Google Patents

Abstract

PURPOSE:To automatize the management of the recording content of a tape cassette by providing a means to read the information code of the tape cassette by performing photoelectric transducing, and a means to read out prescribed data in the tape cassette based on read identification information. CONSTITUTION:A reading means reads the information code entered on a label 8 stuck on the tape cassette 9 by performing the photoelectric transducing at the time of inserting the tape cassette 9, and delivers it to a data retrieval means and a storage means. The data retrieval means retrieves the storage means based on the identification information in the cassette 9 read by the reading means after the tape cassette 9 is inserted, and delivers the prescribed data related to the record of an inserted tape cassette 9 to the display means, and the display means displays delivered data. Meanwhile, the storage means stores the prescribed data related to the record corresponding to the identification information in the cassette 9 read at the reading means. In such a way, it is possible to automatize the management of the recording content of the tape cassette.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a management system for the recorded contents of a tape cassette that is recorded and played back by a video tape recorder (VTR).

(Prior Art) Conventionally, tape cassettes used in VTRs have been managed by, for example, a user handwriting a title or the like recorded on a label on the cassette. However, the above-mentioned management may be forgotten, and some users do not perform the above-mentioned management at all. Therefore, for users who do not like the above-mentioned management or do not do it at all, and who have multiple tape cassettes, it becomes difficult to know which tape cassette contains what.
This creates the inconvenience that you will not be able to understand anything unless you insert it into your computer and play it back. Moreover, when multiple recordings are made on one tape cassette, it often takes a long time to check the contents of one tape cassette.

(Problem to be Solved by the Invention) As described above, the management of tape cassettes used for recording and playback on a VTR is done by handwriting on the label on the cassette by the user, for example, which is complicated and requires the above-mentioned management. Otherwise, if the tape cassette is not used at all, the contents recorded on the tape cassette cannot be known until the tape is played back and viewed, resulting in a drawback that the management of the tape contents is extremely poor. SUMMARY OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks and provides a tape cassette management system that can automatically manage the recorded contents of tape cassettes.

[Structure of the Invention] (Means for Solving the Problems) The tape cassette management system of the present invention is a video tape recorder that performs recording and playback on an inserted tape cassette.
A label on which an information code for identifying the tape force set 1 to 1 is written, and a reading means for photoelectrically converting and reading the information code written on the label pasted on the tape cassette when the tape cassette is inserted. and storage means for storing predetermined data related to the recording of video/audio information on the tape cassette in accordance with the identification information of cassettes 1 to 1 read by the reading means; data retrieval means for searching the storage means and reading out predetermined data related to the recording of the inserted tape cassette based on the identification information of the cassette read by the reading means after being inserted; It has a configuration including a display means for displaying the retrieved data.

(Function) In the tape cassette management system of the present invention, the reading means photoelectrically converts and reads the information code written on the label affixed to the tape cassette when the tape cassette is inserted, and uses this for data retrieval. After the tape cassette is inserted, the data retrieval means searches the storage means based on the identification information of the cassette read by the reading means, and performs a data retrieval process related to the recording of the inserted tape cassette. The predetermined data is read and passed to the display means.The display means displays the passed data.On the other hand, the storage means stores the data of the cassette read by the reading means when recording the video/audio information on the tape cassette. Predetermined data related to the recording is stored in correspondence with the identification information.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the cassette management system of the present invention. 1 is a light emitting diode (IED) that generates a light beam that illuminates the label 8; 2 is a phototransistor that receives reflected light from the label 8 and converts it into electricity;
3 is a shift register that holds the signal output from the phototransistor 2; 4 is a counter that counts the clock output from the phototransistor 1 to the transistor 8; 5 is the recognition of the contents of the label 8; the label 8 is pasted. A microcomputer stores recorded data related to the tape cassette in the memory 7 and searches the recorded contents of the tape cassette, 6 is a VTR timer circuit in which the date, time, channel, etc. of the recorded program is set, 7 is a tape A memory stores the recorded contents of the cassettes, and 8 is a label for classifying the tape cassettes. In addition, LEDI and phototransistor 2
forms a photocoupler.

FIG. 2 is a diagram showing a detailed example of the label 8 shown in FIG. 1. 9 is a tape cassette for the VH3 system, and a label 8 must be pasted on the top surface of this tape cassette. This label 8 has a binary 8-bit cassette NQ code 10.
01 clock code 200 is printed, and cassette Nα is also written.

Next, the operation of this embodiment will be explained. Tape cassette 9 that requires a label 8 to be attached when recording and playing back on a VTR
Insert the cassette into the VTR's cassette slot. During this insertion period, the LED 1 illuminates the force cell 1 to the NO code 100 and the clock code 200 of the label 8, and the phototransistor 2 receives the emitted light. Therefore, as the tape cassette 9 is inserted, the cassette number signal 1 corresponding to FIG.
01 and clock 201 are output. clock 201
is input to the shift register 3 and counter 4, and the cassette number signal 101 is input to the shift register 3. Therefore, the shift register 3 holds the cassette Nα signal 101 in synchronization with the clock 201, and sends this 8-bit parallel cassette Nα signal to the microcomputer 5 when 8 bits are held. On the other hand, the counter 4 counts () the input clock 201, and outputs an interrupt signal to the microcomputer 5 when the count value reaches 8. When the microcomputer 5 receives the interrupt signal, it recognizes the parallel cassette Nα signal and determines the number of the inserted tape cassette. Note that FIG. 3(C) shows the insertion period of the tape cassette. Next, the microcomputer searches the memory γ based on the determined No. of the inserted tape cassette 9, reads out the corresponding recorded data when it is found,
It is applied to a superimpose circuit (not shown) or the like to display recorded data of the inserted tape cassette, such as recording date and time, channel, recording end time, remaining tape amount, etc., on a monitor screen.

The user views the above screen and, after determining whether the tape is the desired one, plays or records the tape.

Next, when the user records on the tape force set 1-0 inserted from the above state, the microcomputer 5 G,!
When the VTR enters the recording mode, the date and time and channel are read from the timer circuit 6, and the read data is written in the area of the memory 7 corresponding to the number of the tape cassette to be recorded. Furthermore, when the recording on the tape ends 1', the microcomputer 5 stores the recording end time in the memory 7.
Invade the said area.

According to this embodiment, the microcomputer 5 identifies the number of the inserted tape cassette 9 and writes the recording data in the memory 7 in accordance with this number, so that the user can manage the recorded contents of the tape cassette. This can be done automatically without any burden. For this reason, the tape cassette 9
By simply inserting the cassette into the VTR, the recorded contents of the inserted cassette will be displayed on the monitor screen, allowing the user to immediately know the contents of the tape without having to play the tape.

FIG. 4 is a diagram showing another example of the label 8 attached to the tape cassette 9, and the cassette number code 100 is the second label.
It may be separated by () for each piece of data as shown in the figure, but it may also be in a format without breaks as in this example.

FIG. 5 is a block diagram showing another embodiment of the present invention. 10 is a gate that is opened only while the tape cassette is being slotted in by the control signal 300 of the VTR; 11.
15 is an inverter that inverts the polarity of the signal; 13 is a limiter circuit that keeps the level of the input signal constant; and 14 is a monomultiplier that generates a square wave clock signal from the input signal. It should be noted that other parts having the same reference numerals as those in Figure 1 must be the same parts as in Figure 1.

Next, the operation of this embodiment will be explained. First, the tape cassette with label 8 as shown in Fig. 6 is attached to the VT.
When inserted into R, the VTR control signal 300 is turned off and the gate 10 is opened. At the same time, the photo 1 to the transistor 2 receive the reflected light from the cassette number code 100 of the label 8 illuminated by the LED 1.
A signal 400 corresponding to a cassette Nα code 100 as shown in Figure (A) is output. This signal aOO is input to the differentiating circuit 12 via the shift register 3 and the inverter 11, with its polarity inverted as shown in FIG. 7(C). Differentiator circuit 12 differentiates the signal shown in FIG. 7(D) and outputs it to limiter circuit 13. The limiter circuit 13 limits the polarity and level of the input signal and outputs a signal as shown in FIG. 7(E) to the monomulti 14. This monomulti 14 creates a square wave clock 500 as shown in FIG. 7(F), and outputs this to the inverter 15 and counter 4. The inverter 15 inverts the polarity of the input signal and outputs a lock signal 501 to the shift register 3 as shown in FIG. 7(G). Therefore, the shift register 3 sequentially holds the signal 400 in synchronization with the clock signal @501, and
A bit parallel cassette Nα signal is output to the microcomputer 5. On the other hand, the counter 4 receives the clock 5.
00 and outputs an interrupt signal to the microcomputer 5 when the count value reaches 8. When the microcomputer 5 receives the interrupt signal, it recognizes the parallel cassette Nα signal output from the shift register 3 and makes a determination.

The subsequent operations are similar to those in the previous embodiment and have the same effects, but in this embodiment, it is possible to eliminate the need to print a clock code on the label 8. Note that the label 8 shown in FIGS. 2, 4, and 6 indicates the cassette Nα code 100.
, clock code 200, etc. are printed point-symmetrically on the right side of the label, even if the label 8 is pasted incorrectly on the top or bottom, the tape force set 1 can be automatically managed.

[Object of the Invention] As described above, according to the cassette management system of the present invention, it is possible to automatically manage the recorded contents of a tape cassette.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the cassette @ processing system of the present invention, Fig. 2 is a diagram showing a detailed example of the label shown in Fig. 1, and Fig. 3 is a block diagram showing an example of the label shown in Fig. 1. 4 is a diagram showing another detailed example of the label shown in FIG. 1; FIG. 5 is a block diagram showing another embodiment of the cassette management system of the present invention; FIG. This figure shows a detailed example of the label shown in FIG. 5, and FIG. 7 is an operation time chart of the system shown in FIG. 6. 1...Light emitting element 2...Phototransistor 3...Shift register 4...Counter 5...Microcomputer 6...Timer circuit 7...Memory 12...Differentiating circuit 14... Monomulti agent Patent attorney Nori Ken Chika Yudo Hiroshi Uji Figure 1 Figure Figure 1

Claims (2)

[Claims] (1) In a video tape recorder that performs recording/playback on an inserted tape cassette, a label is pasted on the tape cassette and includes an information code for identifying this tape cassette, and the tape cassette is inserted. a reading means for photoelectrically converting and reading the information code written on the label affixed to the tape cassette when the tape cassette is loaded; storage means for storing predetermined data related to this recording when recording video/audio information; and after the tape cassette is inserted, the storage means stores the data based on the identification information of the cassette read by the reading means. What is claimed is: 1. A tape cassette management system comprising: a data search means for searching for predetermined data related to recording on an inserted tape cassette; and a display means for displaying the data retrieved by the search means. (2) The tape according to claim 1, wherein the display means comprises a monitor television connected to a video tape recorder, and superimpose means for superimposing display data on the monitor television. Cassette management system.