JPS60131690A - information retrieval device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field 1] This November, we will develop a video-table refrigerator 0) Artificial IT
The present invention relates to an information retrieval device used for applications such as R.

[Prior Art 1] There is no known conventional consumer ITR that can automatically search to reproduce desired information from among the information recorded on a videotape.

Therefore, in order to play back a desired image using a conventional VT/R, manually set the mode such as fast forward or rewind, and manually feed the video tape to the desired position while watching the tape running counter. Searches were performed by playing back the image and determining whether it was the desired one. Such manual searches take 111 hours to complete and are also unreliable.

This type of \ITR is used for reproducing various program sources, such as for viewing, education, and advertising for karaoke, and various control modes are used depending on these uses.

Since it is necessary to change the control program to execute each control mode, it is inevitable that conventional consumer VTRs can be used for the various purposes mentioned above.

1. The purpose of this invention is to provide an information retrieval system that can automatically search for desired information and also automatically select a control program corresponding to the retrieved information. do.

[Configuration 1 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a known VTR body for recording and playing back video and audio information on a videotape, and a terminal 1a outputs a video signal including a synchronizing signal.
11] is the video signal input terminal to \'TR, and 1c is the video tape which is facing the video head of iTR at the current position of the videotape obtained from the pulse counter provided on the reel stand for driving the video tape running. 1d is an output terminal for a signal indicating forward or reverse rotation of the videotape.

2 is a control device using a microcomputer; 3 is a keyboard including a numeric keypad for data input; and 5.1 is a data display device.

As will be described in detail later, the display state of the television image differs depending on the type of information recorded on the videotape, for example for educational learning, advertising, karaoke, etc. memorize control programs,
It's happening. As will be described in more detail later, search index data input using the keyboard is stored in VTR.
Control of sending the video to main unit 1 and recording it on videotape, and
A program is stored therein for performing control to search for a desired videotape position from search data and videotape position information obtained by reel pulses during playback of 7TR.

5 is the horizontal synchronization pulse 1sync and vertical synchronization pulse \7SlllR from the video signal sent from the 7TR main unit;
Synchronous separation circuit that separates and extracts 6 is 14,318
This is the Mllz pulse oscillator. Reference numeral 7 designates a timing signal generation circuit which outputs the G-1 signal shown in FIG. 2 and pulses obtained by dividing the output of the oscillator 6 by 1/1G.

8 is a shift register that temporarily stores the index data output from the control device 2, and the outputs of this shift register and 1 are connected to V via an analog switch 5J that is turned on at the timing of writing to a predetermined position on the video tape.
It is sent to the TR body 1.

1O is a data extraction circuit that extracts the index data output from the \7TR body 1 when searching a videotape, and the data extracted here is transferred to the shift register 11.
is inputted to the control device 2 via.

In the embodiment described above, writing of index data will first be described. A video tape on which various program sources have been recorded is input to the keyboard 3, and index data is input to the keyboard 3.

The index data has the structure shown in Figure 2.It is a program source recorded on a videotape, for example, an educational program, and the contents are divided into chapter 0 and lesson 0. Number data indicating chapters and sections, a tape counter value at tape 1* where each section of each chapter begins, and data CRC for error detection are configured as 40-bit data.

On the other hand, the videotape is played back, the tape counter values of each chapter and each section are memorized, and the chapter number, section number, and tape counter value are input using the telephone key 3. These input data are stored in the controller's main unit 1) (U. 4M n h
1. Input data, 1 display, 1 (Y) will be displayed.

□ Next, set the videotape at the beginning position and
When the menu recording portion of the program source is called once and a start key (not shown) in the keyboard 3 is turned on, the TR main body 1 is placed in recording mode.

and each 1r° stored in the memory in the control device 2.
, the index data of each section is read out to the shift register 8 for one section at a time, and sent to the \7TR main body 1 via the analog switch 5. Index data is written sequentially for all sections as shown by I+) in FIG. Since this index data is likely to have errors, the same index data is inserted and stored multiple times in order to prevent errors such as 7'=1 for each dropper.

Since the part II) above uses the part where the menu of the program source is recorded, the inch-nox data does not appear on the TV screen. ] l l
7P 11ij , 1: or one horizontal scanning period after 11-1.

Next, reference data as shown in FIG. 4 is recorded in each search image information of the program source, for example, in the heading section provided for each section.

To record this reference data, manually play the video tape, find the heading section for each section, and then enter the chapter number, section number, and program identification code S again from the keyboard Y3 as reference data. Similar to the index stage, the 114-period videotape is stored on a 114-period videotape. do.

Note that a code S for software identification is also written in the reference data. The software identification hood indicates the content of the program source. For example, if it is an educational videotape, it is "('l (1110)", if it is a karaoke videotape, it is "0()01"). By using "+) 00 (1" to "1111"), it is possible to identify 16 types of program sources.

Next, a case will be described in which a videotape on which index data and reference data are recorded is played back as described in item 11).

The videotape is placed in the VTR body 1, and the videotape is placed in the starting position.

By operating the start key on the keyboard 3, the video tape \IT is sent to the recording unit J of the index data IF), and \;T R1 is placed in the playback mode. Then, index data is extracted from the video signal read from the video tape by the extraction circuit 10, and the extracted index data is sequentially sent to the control device 2 via the shift recorder 11, and then stored in the memory in the control device 2 again. It's crowded. When all the index data have been stored in the memory, a stop signal is given from the control device 2 to the VTR main body 1, and the \7TR is temporarily stopped.

Here, the user inputs the desired chapter number and section number using the keyboard 3. For example, if you want to see Chapter 1, Lesson 2, enter 1 and 2 on the keyboard. Data entered from the keyboard is displayed on the TV screen in the form of a table of contents. - In the force control device 2, the index data written in the memory is read out, and the tape count value X corresponding to Chapter 1, Section 2 is read out.

Then ＼; i' Set R to fast forward mode and V T
The control device 2 counts the reel pulses obtained from the terminal 1c of each R book 1, and calculates the read count value x
The videotape is fast-forwarded to the position where the tape count value is X. When the tape position reaches X, the control device 2 switches the VTR body 1 to the playback mode and plays back the video signal from the videotape. Reference data is extracted from this video signal by a data extraction circuit 6, and is inputted to the control device 2. The control device 2 inputs the data representing the chapter and section of the reference data taken out, and the data [11 and 1] entered by the keyboard 3.
21, and if they match, set the VTR to still 111 live mode, and at that position, reproduce the heading ``Chapter 1, Lesson 2-1'' recorded on the videotape on the TV screen.

When the user sees this heading and presses the start key, the control device 2 sets the TR main body 1 to the 111 live mode and reproduces the contents of Chapter 1, Section 2.

- The force control device 2 reads the contents of the software identification data S among the contents of the reference data described in -, reads out a control program corresponding to the contents from the memory of the control device 2, and controls the VTR main body 1 in this way. Control program according to the control program.

That is, for example, if the videotape is for educational purposes, the desired 9. When a section and a section are selected, the lecture for that section is first played back in the normal playback mode.

Then, when the value of the section of the reference data becomes ``tlo'', the control device 2 switches the \``i''R main body 1 to the still playback mode and displays the problem. Thereafter, when the user completes solving the problem and inputs a start command using the start key on the keyboard 3, the Vi'R main body 1 is switched to the normal reproduction mode and the answer is explained.

5 and 6 are diagrams showing a part of the circuit shown in FIG. 1 in more detail, and the horizontal synchronization signal Hsync obtained from the synchronization separation circuit 5 is input to the shift input C of the 1214 counter 20.
Vertical synchronization signal ＼I 5yn
e is applied to the reset terminal of the counter. When the counter 2O counts 12 horizontal synchronizing signals after the vertical blanking period, it generates a b pulse, which drives the 111 stable multivibrator 21 with an 11-1 width and generates a gate pulse as shown in FIG. 7G). Output. N while the gate pulse is “L” (low level)
The A N D gate 22 is enabled, and the output pulse of the oscillator 6 is divided into 1/16 by the frequency divider 6a, and the pulse is used as a clock signal and shifted to the CRC generation circuit 26 via N A N I) data 1 and 24. Supply to register 3. In addition, during the period when the gate pulse is "11" (high level), the output of the inverter 25 becomes "l,", and the NAND gates 1 and 23 are enabled, and the control device 2 is activated. The clock pulse output from the microcomputer is NANI)23.24
The signal is supplied to the CRC generation circuit 26 and the shift register 8 via the CRC generation circuit 26 and the shift register 8.

The 32-bit index data outputted from the control device 2 is applied to the CRC generation circuit 26 and converted into a CRC for error detection.
RC data is added thereto, and the signal is supplied to the shift register 8 as shown in FIG. 7, 4r, while the gate signal is at "H". The output pulse of the shift register 8 is applied to the analog switch 9a via the level adjustment circuit 27. The analog switch 9a is opened when the gate 1 signal is output, and sends the index data to the amplifier 29 for a period of 1 tl.

The video signal output from the VTR main body 1 is clamped to a predetermined level by the clamp circuit 30, and the clamped video signal is 1j (the inverted signal of the gate signal, which is the output of the stable multivibrator 21, is "11"). The signal is applied to the amplifier 29 via the analog switch 9b, which is opened to the outside.

By the operation described in L, the index data is duplicated in the 1st horizontal period of the 12th slot after the vertical blanking period, and the 7th
The video signal shown in Figure (1.1) is sent from the amplifier 29 to \゛T1
(Input to main unit 1.

In FIG. 6, the data extraction circuit 10 is connected to the VTR main body 1.
The clamp circuit 31 partially clamps the video signal including index data obtained from the index data to a level, and the level determination circuit 32 compares the clamped video signal with the reference voltage V and compares the clamped video signal with the reference voltage V 2 . Output only the index data ID shown in . This index data is taken into the control device 2 via the shift register 11.

\7' The reel pulse and forward/reverse signal obtained from the R main body 1 are each shaped into waveforms by the waveform shaping circuits 32 and 33, and input into the control wave rri2.

[Effect 1 As described below-1-, according to the present invention, by inputting the desired item 1] (chapter B in the embodiment), the desired information is automatically searched, making it convenient to use. At the same time, the control program of the information reproducing device is automatically selected according to the type of information to be used, so the user does not have to worry about replacing the control program, and there is no need to worry about the wrong system. Tools such as using all programs are still prevented, and recording and reproducing devices such as \7TR are convenient because they can be used in various ways with the same device.
It's also economical.

[Brief Description of the Drawings] Fig. 1 is a block diagram showing an embodiment of a video tape recorder according to the present invention, and Fig. 2 shows an example of the format of index data used in the embodiment of Fig. 1. Data arrangement diagram, No. 4: (Figure 4 is a data arrangement diagram showing the input formula for index data recorded on a videotape.
The figure is a data layout diagram showing the formant of the reference stage, Figures 5 and 6 are l'liil circuit diagrams showing details of the main parts of the circuit in Figure 1, and Figure 7 is a diagram showing the details of the main parts of the circuit in Figure 1. FIG. 3 is a waveform diagram showing an example of an output waveform of the circuit shown in the figure. 1...V T r<, 2...Control device, 3...Keyboard, 5...Synchronization separation circuit, 8, 11...Shift register, 9...Analog switch, 1o... Sampling circuit. Patent Applicant Ricoh Co., Ltd. Agent Aoyama Fuki 1 Procedural Amendment (Voluntary) Director General of the Patent Office 1 Case Display 1981 Patent Application No. 241393 2 Invention Name Information Search Device 3 Person Who Makes Amendment Case Relationship between Patent applicant representative: Hama 1) Hiro 4, Agent 5, Date of amendment order: Voluntary 6, Subject of amendment: Detailed explanation of the invention in the specification (1)
On page 4, line 16 of the specification, ``Figure 2 1'' was corrected to ``Figure 7''. (2) Page 11, lines 15-16 B L (low level)
" has been corrected to "°"I-T" (high level month). (3) Page 12, line 1 ["H" (high level)" has been replaced with ""L" (low level) - Corrected to 1. (4) On page 12, line 2, “L゛” was replaced with “H゛”
Corrected.

Claims (1)

[Claims] (1) Reference data that includes inch data that includes items of information to be recorded on a recording medium and values that indicate the recording position of the information, and data that represents a program that indicates the control mode of the recording and reproducing device when reproducing the information. a recording means for recording on a recording medium; a means for inputting desired items; a means for searching for the recording position of the information of the items input by the input means; and a record of data representing a program included in the reference data. An information retrieval device comprising: a control means for setting a program for a playback device.