JPH08307729A - Remote control transmission device and dictionary data compression method in remote control transmission device - Google Patents

Abstract

(57) [Summary] [Purpose] A reserved recording character that can read the reserved recording characters of all fonts and can recognize the reserved recording characters of many types of fonts without increasing the types of dictionary data. Provided are a remote control transmission device having a recognition function and a dictionary data compression method for the remote control transmission device. [Arrangement] In addition to a registered dictionary 20a that stores preset dictionary data, a learning dictionary 10a that inputs and stores arbitrary learning dictionary data from the image input unit 6 is provided in the dictionary data storage unit, and unrecognized reserved recording characters are provided. Is used as dictionary data, and characters of all fonts are recognized and input. Further, since the dictionary data compressed from a plurality of dictionary data is stored in the dictionary data storage unit, the number of dictionary data does not increase.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control transmitter for remotely controlling a VTR (video tape recorder) or a TV (television receiver).
Use the simple recording reservation system to make recording reservations for VTRs and TVs.
And a dictionary data compression method of the remote control transmission device.

[0002]

2. Description of the Related Art Conventionally, a VTR has been used with a remote control transmitter.
When making a recording reservation for
After transmitting the control signal to enter the recording reservation input mode to R,
Recording reservation data including a channel of a program to be reserved for recording, a date or a day of the week, a recording start time, and a recording time is sequentially input to the VTR. Since each recording reservation data is input by the key of the remote control transmitting device, it is necessary to perform the key operation 20 to 30 times for one recording reservation.

For this reason, there has been a problem that the recording reservation becomes complicated and an input error is likely to occur. This recording reservation procedure is generally the same although it is slightly different depending on the model of the VTR, and thus it has been a common problem when the recording reservation of the VTR is performed using the remote control transmitting device.

Therefore, a simple recording reservation system has been developed in which the recording reservation data is compressed into a recording reservation character code and the recording reservation character code is utilized to simplify the recording reservation input operation.

As the reserved recording character code 1, a G code 11 (Gemster code) developed by Gemster Inc. in the United States is often used. The G code 11 is a recording reservation character code 1 composed of 3 to 8 digits, and the recording reservation data of the program is compressed into the G code 11, and the program is recorded in a program column such as a newspaper or a magazine as shown in FIG. Is displayed together with.

A remote control device for controlling recording reservation of a VTR by inputting a G code is also disclosed in, for example, Japanese Patent Laid-Open No. 5-314750.
Known as the issue.

When the recording reservation of the VTR is made by the G code input, the G code 11 is input to the remote control transmission device 2 shown in FIG. The remote control transmitter 2 decodes the G code 11 into recording reservation data, modulates the recording reservation data into an infrared recording reservation signal according to a transmission format for controlling the VTR 4, and transmits the infrared recording reservation signal to the VTR 4.

By inputting this recording reservation character code, V
According to the remote control device for controlling the recording reservation of the TR, the number of key inputs of the recording reservation data input is significantly reduced.
There is a problem that the key input is required eight to eight times, the recording reservation work is complicated, and the key input is likely to be erroneous.

Further, the reserved recording character code 1 is often displayed in small characters in a small margin of the program section as shown in FIG. 10, which is erroneously readable and causes an erroneous input.

Further, there is also known a remote control device for controlling the TV reception reservation by inputting the recording reservation character code by using this recording reservation character code, but similarly, the key input is required 3 to 8 times. However, there is a problem that the reception reservation work is complicated and that the recording reservation character code is easily erroneously read and the key input is easily made.

Therefore, the present applicant has filed Japanese Patent Application No. Hei 6-1074.
No. 11 filed an invention of a remote control transmission device having a recording reservation character recognition function of recognizing the recording reservation characters constituting the recording reservation character code 1 used in the simple recording reservation system and inputting them without manual operation. .

According to this remote control transmission device, the recording reservation and the reception reservation work are easy, and the recording reservation character code is not erroneously input.

[0013]

However, the character recognition of the reserved recording character is performed by comparing it with the dictionary of the corresponding character and the image information read by the image scanner, but the reserved recording set as the dictionary data is used. If the font is different from the character, the character cannot be recognized.

For example, the G-code fonts printed on the program columns of newspapers, magazines, etc. also differ from country to country and from newspaper to magazine, and the dictionary data corresponding to each font is stored in the dictionary data in advance each time. I had to keep it.

On the other hand, it is conceivable to preset various kinds of dictionary data corresponding to various kinds of fonts, but there is a limit to the kind and it is not possible to correspond to all fonts of each country. .

Further, if a large number of types of dictionary data are set in advance, a memory capacity proportional to the types is required, and at the time of character recognition, the characteristics of the image information read by the image scanner are stored in the dictionary. Since it is necessary to compare each data, there is a problem that the recognition speed is significantly reduced.

The present invention has been made in view of the above-mentioned conventional problems.
In addition to being able to read the reserved recording characters of all fonts, if the reserved recording characters are numbers, it is possible to recognize the reserved recording characters of many types of fonts without increasing the types of dictionary data. An object of the present invention is to provide a remote control transmission device having a recording reservation character recognition function that can be performed.

[0018]

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and a remote control transmission device according to the invention of claim 1 optically reads a reserved recording character code. An image input unit that photoelectrically converts the image data into binary image data, a dictionary data storage unit that stores dictionary data, and the image information and the dictionary data stored in the dictionary data storage unit are compared, and the reserved recording characters are recorded. In a remote control transmission device having a character recognition processing unit for recognizing a reserved recording character constituting Code 1, and having a reserved recording character recognition function for inputting a reserved recording character code used in a simple recording reservation system, a dictionary data storage unit is provided. , A learning dictionary that stores preset dictionary data and a learning dictionary that stores arbitrary learning dictionary data by inputting from the image input unit, Re or of dictionary data and by comparing the image information, characterized in that it recognized the recording reserved characters.

Further, in the remote controller transmitting device according to the invention of claim 2, an image input portion for optically reading and photoelectrically converting the reserved recording character code into image information composed of binary data, and "0" to ". The dictionary data storage unit that stores the dictionary data of each number up to 9 "is compared with the image data and the dictionary data stored in the dictionary data storage unit, and" 0 "to" 9 "constituting the reserved recording character code 1 are compared. In the remote controller transmitting device having a character recognition processing unit for recognizing the reserved recording characters of each number up to, and having a recording reserved character recognition function for inputting the reserved recording character code 1 used in the simple recording reservation system, dictionary data storage The dictionary data stored in the unit is characterized in that it is dictionary data obtained by compressing a plurality of dictionary data corresponding to different fonts.

Further, in the dictionary data compression method in the remote control transmission device according to the third aspect of the present invention, the dictionary data stored in the dictionary data storage unit is (a) an arbitrary number of each number from "0" to "9". Select one character as the reference character,
(B) selecting arbitrary dictionary data as reference dictionary data from a plurality of types of dictionary data corresponding to a plurality of different fonts for the reference character, (c) distance between the reference dictionary data and the remaining dictionary data in the reference character L is calculated respectively, (d) The shortest distance L _MIN among the distances between the reference dictionary data and the dictionary data of other numbers is calculated, and (e)
The reference dictionary data and the distance L obtained in (c) are the shortest distance L.
_The dictionary data shorter than _MIN is collected as one dictionary data group, and the average value is taken as one dictionary data, and (f) the distance L from the reference dictionary data is (d).
From the remaining dictionary data longer than the shortest distance L _MIN obtained in step 1, the dictionary data not selected as the reference dictionary data is set as new reference dictionary data to be selected in (b),
(G) Repeat (c) to (f) until all the dictionary data for the reference character is selected as the reference dictionary data, and (h) select any one character from the remaining numbers as the reference character. , (B) to (f) are repeated, and the remaining dictionary data for each number is compressed into dictionary data.

[0021]

According to the invention of claim 1, in the character recognition processing section,
The image information read by the image input section is compared with the dictionary data stored in the dictionary data section, and the reserved recording character is recognized and input to the remote control transmission device.

Since the image information is compared with preset dictionary data stored in the registered dictionary and one of the dictionary data stored in the learning dictionary, the character recognition rate is improved.

Since the learning dictionary data can be inputted by the image input unit and stored in the learning dictionary of the dictionary data storage unit, even if the reserved recording characters of various fonts are used,
It can be learning dictionary data, and characters can be recognized by the remote control transmitting device.

According to the second aspect of the present invention, the dictionary data stored in the dictionary data storage unit is dictionary data obtained by compressing a plurality of dictionary data corresponding to different fonts. Therefore, recorded characters in different fonts can be recognized and the dictionary can be recognized. Since the number of data does not increase, the memory capacity of the dictionary data storage unit does not increase and the character recognition speed does not decrease.

According to a third aspect of the present invention, dictionary data having a shorter distance than the dictionary data of other characters is collected as a dictionary data group, all dictionary data in the dictionary data group are averaged, and the average value is formed. One dictionary data.

Since this compressed dictionary data holds the characteristics of each dictionary data forming the dictionary data group,
It is possible to recognize the reserved recording characters of the font corresponding to each dictionary data.

Further, since a plurality of dictionary data constituting the dictionary data group is used as one compressed dictionary data, the number of dictionary data stored in the dictionary data storage unit is reduced and the memory capacity of the dictionary data storage unit is reduced. Does not increase.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram of a remote control transmitting device 5 according to the first embodiment of the present invention, FIG. 2 is a plan view of the remote control transmitting device 5, FIG. 3 is an explanatory view of an image input section, FIG. 4 and FIG. 5 and 6 are explanatory views showing the operation state, FIG. 7 and FIG.
FIG. 7 is a flowchart showing a recognition processing procedure of a character recognition means.

First, the remote control transmitter 5 according to the present invention.
The character recognition means will be described. The character recognition means includes an image input section 6, a character cutout circuit 7, a preprocessing circuit 8 and an identification circuit 9 which is a character recognition processing section.

The image input section 6 is, as shown in FIG.
Light source 60, lens 61, mirror 63, and one-dimensional sensor 6
And 2.

The light emitted from the light source 60 illuminates the G code 11 through a window hole 66 provided in the bottom surface of the remote control transmitter 5, and the reflected light passes through the window hole 66 again and the lens 63 is reflected by the mirror 63. Through the one-dimensional optical sensor 6
Light is guided to 2. A visual inspection window 67 (see FIG. 2) is formed on the upper surface of the remote control transmitting device 5 so that the G code irradiating portion can be seen through the window 66 from above the remote control transmitting device 5.

The mirror 63 is supported in the remote control transmitting device 5 so as to be rotated by a driving means (not shown), and its rotation amount is restricted by stoppers 65a and 65b. The driving means is composed of a rotating plate pivotally supported by the remote control transmitting device 5 and a transmission mechanism for transmitting the rotation to the pivot of the mirror 63. For example, the rotating plate is rotated by a manual operation, a small motor, a gear train, or a belt. The axis of the mirror 63 is rotated by a known transmission mechanism such as. The rotation angle of the mirror 63 is detected by the rotary encoder 64 and sent to the character string cutout circuit 7 shown in FIG. 1 as a signal indicating the sub-operation position.

As the one-dimensional photosensor 62, a digital CCD (charge transfer device) is used which photoelectrically converts the reflected light from the G code 11 collected by the lens 61 into a digital signal. The one-dimensional optical sensor 62 is not limited to a CCD but a BBD (ba
Ccket bridge device) or double gate MOSFET may be used.

The output of the one-dimensional photo sensor 62 is a digital signal obtained by main scanning one line of the G code 11 and binarizing the line at a predetermined level. For example, the pixel has a ground color (white) of "0", In the printing section (black) of the G code 11, digital signals set to "1" are sequentially output to the character string cutout circuit 7 connected to the subsequent stage.

As will be described later, when the main scanning of one row is completed, the mirror 63 rotates to move the next row to the one-dimensional sensor 6.
Image on 2. The one-dimensional optical sensor 62 continues the main scanning for the next row, and thereafter performs the same processing until the rotation of the mirror 63 is stopped by the stopper 65, and performs the sub scanning on the G code.

The character string cutout circuit 7 recognizes the image information of one screen from the image information of each line main-scanned by the one-dimensional optical sensor 62 and the rotation angle information of the mirror 63, and the G code 11 is constructed from this image information. Extract the string of numbers.

The output of the character string cutout circuit 7 is the preprocessing circuit 8
It is connected to the. In the pre-processing circuit 8, the cut-out character string is further cut out on a character-by-character basis, and G stored in a RAM 10 and a ROM 20 which are dictionary data storage units described later, respectively.
After normalization so that it can be compared with a dictionary of codes, its features are extracted.

The preprocessing circuit 8 is connected to the identification circuit 9, and the identification circuit 9 is further connected to the RAM 10, the ROM 20, the control circuit 12, and the data register 13.

The ROM 20 has an area 20a of a registered dictionary for storing preset dictionary data, and the RAM 10 has
Areas 10a of the learning dictionaries for storing the learning dictionary data are secured respectively.

In the discrimination circuit 9, the characters cut out are stored in the RAM.
10a and the ROM 20a are compared with the G code dictionaries respectively stored, and the cut out characters are recognized as the numbers forming the G code 11. The number recognized by the identification circuit 9 is sent to the data register 13 and temporarily stored therein.

In the data register 13, the G code 11 input from the key input means which is the other code input means.
Can also be entered. The key input means will be described below with reference to FIG.

Reference numeral 14 is a transmission circuit for generating a transmission signal having a predetermined reference frequency. A timing generation circuit 16 is connected to the transmission circuit 14 via a frequency divider 15. The timing generation circuit 16 receives a command from the control circuit 12 and generates a timing signal, and this timing signal is supplied to the key output circuit 17 and the key input circuit 18.

A key matrix circuit 19 is formed between the key output circuit 17 and the key input circuit 18, and each key switch at the intersection of the key matrix circuit 19 is a numeric key 191 of the remote control transmitter 5 shown in FIG. It corresponds to a G code input mode switching key 192, a VTR control key 193 for tape running and fast-forwarding, and a G code reading key 195.

The key input circuit 18 is provided with the recognition mode / recognition mode shown in FIG. 2 for switching between the character recognition mode and the learning mode.
A mode state signal from the learning mode changeover switch 196 is also input.

The key output circuit 17 receives the timing signal and sequentially sets each column of the key matrix circuit 19 to the high level. When any one of the above keys is pressed, the corresponding key switch of the key matrix circuit 19 is closed, the row to which the key switch belongs becomes high level, and the data is input to the key input circuit 18. Therefore, the key input circuit 18 can determine which key switch of the key matrix circuit 19 is pressed.

When the G code 11 is input by the key input means, the number key 191 is pressed. The key input circuit 18 is connected to the data register 13 and temporarily stores the number input by the key until the digit number of the G code 11 is reached. In this way, the G code 11 can be input to the data register 13 by key input.

The G code 11 input to the data register 13 is transferred to the control circuit 12 including a microprocessor.

The control circuit 12 includes a RAM 10,
The ROM 20, the display drive circuit 21, and the output circuit 22 are connected. The control circuit 12 transfers the input G code to the display drive circuit 21, and then the G code 1
Based on 1, the recording reservation data is created according to the G code conversion table stored in the ROM 20. The G code conversion table shows the relationship between the G code 11 and the recording reservation data including “program channel”, “date or day of the week”, “recording start time”, “recording time” and the like.

In the ROM 20, in addition to the G code conversion table, programs of the control circuit 12 and the identification circuit 9, a transmission format for controlling the VTR, a display character code, etc. are written in advance.

In the registered dictionary area 20a of the ROM 20, dictionary data compressed from a plurality of dictionary data as described above is stored as preset dictionary data.

This preset dictionary data is a dictionary of one kind obtained by compressing a plurality of dictionary data corresponding to several kinds of standard fonts for each number from "0" to "9" forming a G code. This is data, and this is R
It is written in the registered dictionary area 20a of the OM 20.

Therefore, the preset dictionary data includes the characteristics of various standard fonts. If the G code is displayed in a normal font, the character can be recognized by comparing with the dictionary data. It is possible.

The RAM 10 stores recording reservation data created by the control circuit 12, and the learning dictionary area 10a of the RAM 10 stores any learning dictionary data input from the image input unit 6.

That is, when the G code is displayed in a font that cannot be recognized by the dictionary data stored in the ROM 20, the image recognition unit 6 of the character recognition means is used to input the G code of the font. Is stored in the learning dictionary area 10a of the RAM 10 as learning dictionary data.

As described above, the G-code dictionary only stores and reads 10 kinds of characters from "0" to "9" as compared with a commonly used OCR (optical character reading device). Since the characters are printed on the program columns of newspapers, magazines, etc., and do not target handwritten characters,
With regular fonts, only limited dictionary data is needed, and only a small storage capacity is used.

Therefore, a handy type device such as a remote control transmitter can have a character recognition function without increasing the size of the device.

The display drive circuit 21 drives and controls the liquid crystal display section 23 connected to the display drive circuit 21, and receives a display signal from the control circuit 12 to receive the G code 1
1, the temporary recognition result, which will be described later, and the end of learning are displayed on the liquid crystal display 23. When the character recognition means recognizes an incorrect G code 11, it can be confirmed by the display on the liquid crystal display unit 23. In this case, the character recognition means can re-input or the key input means can make a mistaken recognition. Correct the character.

Even when the G code 11 cannot be recognized by the character recognition means, the fact is displayed on the liquid crystal display unit 23. If it cannot be recognized, as described below,
The recognition mode / learning mode selector switch 196 is switched to the learning mode, the G code is read by the image input unit 6 and stored as learning dictionary data.

If it is stored as learning dictionary data, the recognition mode / learning mode changeover switch 196 can be switched to the recognition mode again, the G code can be read, the character can be recognized and input.

The liquid crystal display unit 23 may display the recording reservation data as shown in FIG. 2 after the recognized G code 11 is displayed, or the recording may be performed without displaying the G code 11. You may display only the reservation data.

The control circuit 12 creates a primary modulation signal in accordance with the VTR transmission format from the recording reservation data and sends it to the output circuit 22. The output circuit 22 receives the primary modulation signal and the frequency-divided signal from the frequency divider 15, and controls switching of the drive transistor 25 of the light-emitting diode 24 connected to the output circuit 22.

The remote control transmitting device 5 having such a configuration has the same functions and configurations as a remote control transmitting device for remotely controlling a normal VTR, except for the above description regarding the input and processing of the G code 11. .

Next, a plurality of dictionary data corresponding to different fonts are compressed, and the ROM of the remote control transmitter 5 is compressed.
A method of compressing dictionary data when writing the preset dictionary data to 20 will be described.

FIG. 9 is a flow chart for explaining this dictionary data compression method.

First, an arbitrary one character, for example, "3" is selected from the numbers "0" to "9" constituting the G code which is the reserved recording character code as the reference character (step S30).

Assuming that the dictionary data corresponding to k kinds of fonts is compressed, there are k kinds of dictionary data for one character of the reference character "3".

Each dictionary data is represented by an m-dimensional vector, and the k kinds of dictionary data D ₃₁ , D ₃₂ , D ₃₃ , D ₃₄ ... D _3k for this reference character "3" are: Figure 11
It is located in the m-dimensional space like.

Any of the dictionary data D ₃₂ is selected as the reference dictionary data (step S31), and the reference dictionary data D ₃₂ and the other dictionary data D ₃₁ , D of the reference character "3" are selected.
The distances L to ₃₃ , D ₃₄ ... D _3k are obtained (step S32).

As for the distance between the dictionary data, one dictionary data is D _i (d _i0 , d _i1 , ... D _im ,) and the other dictionary data is D _j (d _j0 , d _j1 , ... D _jm , ), D _i and D _j
The distance L is

[0071]

[Equation 1]

It is obtained by the Euclidean distance of.

The distance L between D _i and D _j is

[0074]

[Equation 2]

It may be obtained by the city block distance of.

In FIG. 11, if a two-dimensional vector of m = 2 is considered, the distance L ₁ between the reference dictionary data D ₃₂ and the dictionary data D ₃₁ is longer than the distance L _k between the dictionary data D _3k. .

In the same manner, the distance between the reference dictionary data D ₃₂ and the dictionary data of other characters is calculated, and the shortest distance L _MIN is obtained.
Is calculated (step S33).

In FIG. 11, since the distance from the dictionary data D ₂₁ of the character “2” is the shortest from the reference dictionary data D ₃₂ , this distance is set as the shortest distance L _MIN .

Next, among the dictionary data in the reference character, the dictionary data whose distance L to the reference dictionary data D ₃₂ obtained in step S32 is shorter than the shortest distance L _MIN is regarded as one dictionary data group, and the dictionary data group is set. The average value of all the constituent dictionary data is taken as one dictionary data (step S34).

For example, in FIG. 11, if L ₁ and L _k are shorter than the shortest distance L _MIN , the dictionaries D ₃₁ and D _3k are combined into one dictionary data group in addition to D _32. One dictionary data D _3S is obtained by taking the average value of all the dictionary data constituting the.

That is, this compressed dictionary data D _3S
Is a vector having the average value of the m-dimensional components of the dictionary data D ₃₁ , D ₃₂ , and D _3k as its components.

Of the dictionary data in the reference character, step S
If the dictionary data whose distance L to the reference dictionary data D ₃₂ obtained in 32 is equal to or more than the shortest distance L _MIN exists, the process proceeds to step S36, and if not, all the dictionary data in the reference character. Is compressed into one dictionary data and the process proceeds to step S38 (step S3
5).

In step S36, the reference dictionary data D ₃₂
It is determined whether or not the dictionary data whose distance L to and is greater than or equal to the shortest distance L _MIN has already been selected as the reference dictionary data.

If there is dictionary data that is not selected as the reference dictionary data among the dictionary data whose distance L is equal to or greater than the shortest distance L _MIN , the processing from step S32 onward is further repeated to compress the dictionary data. Therefore, in step S37, one of them is set as new reference dictionary data.

In the dictionary data D ₃₃ shown in FIG. 11, the distance L _{3 from} the reference dictionary data D ₃₂ is the shortest distance L _MIN or more, and since it is not selected as the reference dictionary data, new data is added in step S37. It is selected as the reference dictionary data, and the processing from step S32 is repeated.

At this time, the above-mentioned compressed dictionary data D _3S
Is also treated as one of the dictionary data in the reference character.

On the other hand, if all the dictionary data whose distance L to the reference dictionary data D ₃₂ is equal to or more than the shortest distance L _MIN are already selected as the reference dictionary data, the step S32 is further performed in the reference character. Even if the following process is repeated, the dictionary data cannot be compressed, so step S3
Proceed to 8.

In step S38 after the dictionary data compression procedure for one character as the reference character is completed,
It is determined whether or not all the characters from "0" to "9" have been used as the reference characters, and if there are remaining characters that are not the reference characters, the process proceeds to step S39.

In step S39, one character that is not a reference character is selected as a reference character, and k types of dictionary data existing for this one character are compressed. Therefore, the processing from step S31 to step S38 is repeated as described above.

When all the characters are selected as the reference characters in step S38, the dictionary data left for each character in step S40 is used as compressed dictionary data.
It is stored in the registration dictionary 20a of the ROM 20.

Next, the dictionary data is converted into the learning dictionary 20a.
The operation of the remote control transmitting device 5 stored in will be described.

When the G code 11 is input by the character recognition means, the G code input mode switching key 192 is pressed to set the remote control transmitter 5 to the G code input mode.

At this time, the remote control transmitting device 5 is placed on the program column, and the G code printed next to the program to be input is positioned in the window hole 66 while confirming with the visual window 67 in FIG.

Then, the G code reading key 19 is further added.
When 5 is pressed, the mirror 63 is driven by a small motor (not shown) from the standby state of FIG. 4 and rotates counterclockwise in the figure.

In the state shown in FIG. 5, the mirror 63 contacts one stopper 65a and stops the counterclockwise rotation. At this time, the reflected light reflected from the rightmost row in the figure of the program section below the window hole 66 is guided by the mirror 63 onto the one-dimensional optical sensor 62. The one-dimensional optical sensor 62 is
Main scanning is performed on the rightmost line.

After that, the mirror 63 is rotated clockwise by a small motor, and the images of the respective rows of the program column are sequentially formed on the one-dimensional optical sensor 62 from the right end to the left end below the window hole 66. . Therefore, the one-dimensional optical sensor 62 is
The main scanning is performed on each line, and the program below the window 66 is sub-scanned from the right end to the left end.

As shown in FIG. 6, at the position where the mirror 63 is in contact with the other stopper 65b, the one-dimensional sensor 62 main-scans the left end row below the window hole 66, and the image input is completed.

The rotation angle of the mirror 63 is detected by the rotary encoder 64 and sent to the character string cutout circuit 7. Therefore, in the character string cutout circuit 7, the window angle is calculated from the image information of each row and the rotation angle information of the mirror 63. This is the image information for the one screen below.

G code 1 from the image information of this one screen
7 and 8 for the case of recognizing 1 and the case of storing the learning dictionary data of the new G code 11 in the learning dictionary.
The flowchart will be described.

First, the character segmenting circuit 7 extracts the character string of the numbers forming the G code 11 from the image information of one screen (step S1). Extraction of a character string is recognized as a continuous character string, for example, when each of the plurality of images recognized as black is surrounded by white.

The extracted character string is subjected to character cutout processing (step S2) for cutting out each character, and the cutout character is compared with the dictionary, so that the character string is normalized to the same size as the dictionary ( Step S3) is performed. Next, the characteristics of each part are extracted (step S4).

In the feature extraction, for example, with respect to a normalized character, the features of its constituent parts are classified according to the length of consecutive black, that is, "1", the number of occurrences, etc., and this is extracted.

The character cutting (step S2), normalization (step S3), and feature extraction (step S4) are executed by the preprocessing circuit 8.

Next, in step S5, it is determined whether the recognition mode is for recognizing characters or the learning mode for storing in the learning dictionary.

The recognition mode or the learning mode is judged by the mode state of the recognition mode / learning mode changeover switch 196 of FIG. 2. In the learning mode, it is not necessary to compare the image information with the dictionary data. Step S1
Proceed to 2.

The case of the recognition mode will be described later.

In step S12, the processes of steps S2 to S5 are repeated until the processes of steps S2 to S5 are performed for all the cut characters, and then the process proceeds to step S13. That is, by this iterative process, each character of the image information is normalized and the feature thereof is extracted.

In step S13, it is determined again whether the recognition mode or the learning mode. The mode determined in this step is the same as the mode determined in step S5.

Since the learning mode is set, step S
14, the read image information is displayed on the liquid crystal display unit 23.
Is displayed as a temporary recognition result.

In step S15, the input standby state is maintained until the number of digits of the temporary recognition result displayed on the liquid crystal display 23, that is, the number of characters cut out from the character string, of the educational data is input. The educational data is input by inputting the same number from the number keys 191 while checking the temporary recognition result on the liquid crystal display unit 23.

When the number of digits of educational data is input, the features extracted in step S4 for each character are stored in the learning dictionary area 10a of the RAM 10a in association with the input educational data (step S16).

Since the character stored in this learning dictionary is the arbitrary G code 11 printed next to the program on the program column, the learning dictionary data to be easily learned can be input, but the numbers are not always continuous. Nor is it that all the numbers from "0" to "9" are included in this.

Therefore, in step S17, the learned numbers are displayed on the liquid crystal display unit 23 to inform the remaining numbers to be learned.

If there are numbers left to learn,
After the G code 11 including the remaining numbers is searched on the program section and positioned in the window 66 from step S18,
Returning to step S0, the above-mentioned processing is repeated by pressing the G code reading key 195.

When all the numbers from "0" to "9" have been learned, "learning completed" is displayed in the liquid crystal display unit 2 in step S19.
3 is displayed, a learning flag is set, and the learning mode is ended.

When the numbers of other fonts are newly used as the learning dictionary data, the learning dictionary data can be stored in the same manner by the same procedure. Therefore, as long as the memory capacity of the learning dictionary 10a remains, a large number can be stored. It is possible to store learning dictionary data corresponding to different types of fonts.

Next, the recognition mode for recognizing the G code 11 from the image information input by the image input section will be described.

In FIGS. 7 and 8, the procedure up to step S5 is the same as that in the learning mode, and therefore its explanation is omitted.

If it is the recognition mode, step S5.
To step S6.

In step S6, it is determined whether or not the learning flag is set. If the learning flag is not set, the dictionary data is the registered dictionary 20a of the ROM 20.
The image information for each character that has been cut out is compared with this dictionary data because it is stored only in step S7.

If the learning flag is set, it means that at least one type of learning dictionary data is stored in the learning dictionary 10a of the RAM 10 according to the procedure described above.

Therefore, in step S8, two or more types of dictionary data stored in either the registered dictionary or the learning dictionary are compared with the image information for each character cut out, and the dictionary data with the shortest distance is determined as the optimum dictionary data. As compared with the image information.

Next, in the identification circuit 9 which is the character recognition processing section, the collation with the dictionary determined in step S7 and step S8 is performed (S9).

In the collation with the dictionary, the extracted features of each part are compared and the difference is represented by a position vector. Using the sum of the position vectors for each feature as the composite vector, the character with the shortest composite vector distance among the characters 0 to 9 recorded in the dictionary is selected, and the distance is set to a predetermined value 3б (recorded in the dictionary. If the difference is less than the sample character variation), that character is recognized. When the distance is 3 б or more, it is determined that the character cannot be recognized.

When the character is recognized, the character data is output to the data register 13, and when the character is determined to be unrecognizable, the character data such as "?" Indicating that the character cannot be recognized is output to the data register 13 (S10) (S11). ).

When the output to the data register 13 is completed,
For the character cut out next from the character string, the same processing as in steps S2 to S12 is executed (S
12) When the processing of the last character cut out is completed, the process proceeds to step S13.

In step S13, since the recognition mode is set, the flow advances to step S20 to notify the control circuit 12 that the character recognition is completed, and the character recognition mode is completed.

In the control circuit 12, the character data recorded in the data register 13 is received via the display drive circuit 21 in response to the notification that the character recognition is completed.
Display to 3. If the character displayed at this time includes a “?” Symbol that indicates that the character could not be recognized, the character recognition means is reset and re-input, or the number key 191 is used for correct input. Enter the number.

In this way, in the remote control transmitting device 5 to which the G code 11 is input, the VTR is detected based on the G code.
Is remotely controlled by an infrared signal.

This will be described with reference to FIGS. 1, 2 and 12, and the character string of the G code displayed on the liquid crystal display unit 23 of FIG. 2 is, for example, “Thursday” according to the G code conversion table stored in the ROM 20. "Channel 8""6 pm
It is converted into recording reservation data composed of "start time" and "one hour".

The recording reservation data is displayed on the liquid crystal display section 23 via the display drive circuit 21, and based on the recording reservation data, a series of control codes for remotely controlling the recording reservation of the VTR is generated by the control circuit 12. Created in.
This series of control codes is a series of control commands for recording reservations. From the recording reservation data of "Thursday", "8th channel", "6pm start", and "1 hour", "VT
Turn on the power of R "" Enter recording reservation input mode "
Codes a series of control commands that "sequentially input program data (Thursday, start time 6:00 pm, end time 7:00 pm, channel 8)""release recording reservation input mode and enter recording reservation standby mode" It was done.

As shown in FIG. 12, each control instruction is composed of a start bit, an 8-bit custom code, a control code, and a code obtained by inverting the custom code and the control code, respectively. A series of control codes are pulse position modulated and sent to the output circuit 22 as a primary modulation signal.

The output circuit 22 outputs this primary modulation signal to 3
Secondary modulation is performed at a carrier frequency of 8 KHz, and a transmission signal for controlling the VTR 4 is emitted from the light emitting diode according to the secondary modulation signal.

The VTR 4 receives the transmission signal and enters the recording standby mode of the program to be recorded.

As shown in FIG. 13, the remote control transmission device connects a clock 26 between the control circuit 12 and the transmission circuit 14 so that the VTR 4 can be sequentially remoted before and after the broadcast time of the program to be reserved for recording. It may be controlled.

That is, the power of the VTR is turned on immediately before the program, the tuner of the VTR is selected as the channel of the program,
The control signal for moving the video tape and setting the recording mode is sequentially transmitted, and after the program ends, the recording is stopped and the control signal for turning off the power of the VTR is transmitted.

The control circuit 12 monitors the clock signal output from the clock 26 and "turns on the power of the VTR" and "selects a channel of the recording reservation program" from the RAM 10 immediately before the recording start time of the recording reservation data. "V
The code corresponding to the control command "run the tape of TR and set to the recording mode" is sequentially called.

Further, the clock signal is monitored, and after the recording reserved program is completed, the codes corresponding to the control commands "stop the VTR tape and stop the recording mode" and "turn off the VTR power" are sequentially output from the RAM 10. call.

The control code called from the RAM 10 is pulse-position modulated by the control circuit 12 and sent to the output circuit 22. The output circuit 22 secondarily modulates the primary modulation signal with a carrier frequency of 38 KHz, and secondarily modulates it. It is transmitted as a recording control signal for controlling the VTR from the light emitting diode according to the signal.

The VTR successively receives the recording control signal before and after the program reserved for recording, and performs a predetermined operation for recording the program.

In the embodiment of the present invention, the learning dictionary data is stored in the learning dictionary area 10a of the RAM 10.
In addition to AM10, rewritable EPROM, EERO
A memory such as M may be provided and stored in this memory.

The compression of the dictionary data has been described with reference to the preset dictionary data, but the dictionary data to be compressed is not limited to this and may be learning dictionary data.

Therefore, the newly stored learning dictionary data can be compressed by the present invention, and the number of learning dictionary data can be reduced.

Further, the compression of the dictionary data can be performed on the dictionary data in which the learning dictionary data stored in the learning dictionary is included in the dictionary data stored in the registered dictionary, and the dictionary data stored in the entire device is stored. Can be reduced.

In the above embodiment, the G code input mode switching key 192 and the G code reading key 195 are different keys. However, when the G code input mode switching key 192 is pressed to enter the G code input mode. In addition, the G code reading key 195 may be omitted by starting the G code reading at the same time.

[0146]

As described above, according to the invention of claim 1,
Since the recording reservation character code used in the simple recording reservation system is optically read by the character recognizing means to be recognized and inputted to the remote control transmitting device, the input work by the key becomes unnecessary.

Further, the simple recording reservation system can be used only by providing the general-purpose VTR control remote control transmission device with the image input section, the dictionary data storage section, and the character recognition means composed of the character recognition processing section. .

Characters that cannot be recognized by the character recognizing means of the remote control transmitting device are newly added to the remote control transmitting device as learning dictionary data by the key input means provided in the image input section and the general-purpose VTR control remote controller. Since it can be stored in the learning dictionary, it can be input by character recognition without subsequent manual input.

Therefore, even the reserved recording characters of various fonts other than the font assumed in advance can be used as the learning dictionary data and can be recognized by the remote control transmitting device.

Further, according to the invention of claim 1, in the character recognition processing section, one of the dictionary data, which is preset dictionary data in which the image information read by the image input section is stored in the registered dictionary and learning dictionary data, is stored. Since the data is compared, the character recognition rate is improved.

Further, when the reserved recording character code is composed of only numbers like the G code, a complicated program is not required for character recognition, and the dictionary has only 10 kinds of numbers. It is not necessary to prepare a storage medium of capacity,
RAM and RO provided in the conventional remote controller for VTR control
M can be used.

According to the second aspect of the present invention, the dictionary data stored in the dictionary data storage unit is dictionary data obtained by compressing a plurality of dictionary data corresponding to different fonts, so that recorded characters of different fonts are recognized. In addition, since the number of dictionary data does not increase, the memory capacity of the dictionary data storage unit does not increase and the character recognition speed does not decrease.

According to the third aspect of the present invention, dictionary data having a distance closer than that of other character's dictionary data is collected as a dictionary data group, and the average of all the dictionary data in the dictionary data group is calculated. One dictionary data consisting of values.

Since this compressed dictionary data holds the characteristics of each dictionary data that constitutes the dictionary data group,
It is possible to recognize the reserved recording characters of the font corresponding to each dictionary data.

Further, since a plurality of dictionary data constituting the dictionary data group are one compressed dictionary data, the number of dictionary data stored in the dictionary data storage unit is reduced and the memory capacity of the dictionary data storage unit is reduced. Does not increase.

[0156]

[Brief description of drawings]

FIG. 1 is a block diagram of a remote control transmission device 5 showing an embodiment of the present invention.

FIG. 2 is a plan view of a remote control transmission device 5.

FIG. 3 is a perspective view of an image input unit.

FIG. 4 is an explanatory diagram showing a standby state of an image input unit.

5 is an explanatory diagram showing a reading start state of FIG. 4. FIG.

FIG. 6 is an explanatory diagram showing a reading end state of FIG. 4;

FIG. 7 is a flowchart showing a processing procedure in a recognition mode and a learning mode.

FIG. 8 is a flowchart showing a processing procedure in a recognition mode and a learning mode.

FIG. 9 is a flowchart showing a procedure for compressing dictionary data.

FIG. 10 is a flowchart showing a procedure for compressing dictionary data.

FIG. 11 is an explanatory diagram showing two-dimensionally the position of dictionary data represented by an m-dimensional vector.

FIG. 12 is a schematic diagram showing a series of control codes.

FIG. 13 is a block diagram of a remote control transmission device according to another embodiment of the present invention.

FIG. 14 is an enlarged view of a program section.

FIG. 15 is a perspective view showing a state in which a conventional remote control transmission device is used.

[Explanation of symbols]

1 Recording reserved character code 5 Remote control transmission device 6 Image input unit 9 Character recognition processing unit 10 RAM 10a Learning dictionary 20 ROM 20a Registered dictionary L Distance between reference dictionary data L _MIN Shortest distance between reference dictionary data and dictionary data of other characters distance

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Shimazaki 1-1 Honai, Yao-cho, Nyogun-gun, Toyama Prefecture SMC Corporation Toyama Office

Claims (3)

[Claims] 1. An image input section (6) for optically reading and photoelectrically converting a reserved recording character code (1) into image information consisting of binary data, and a dictionary data storage section for storing dictionary data. A simple recording reservation system is provided with a character recognition processing unit (9) that compares the image information with the dictionary data stored in the dictionary data storage unit and recognizes the recording reservation character that constitutes the recording reservation character code (1). In a remote control transmission device having a recording reservation character recognition function for inputting a recording reservation character code (1) to be used, a dictionary data storage unit is provided with a registration dictionary (20a) for storing preset dictionary data and arbitrary learning dictionary data. Learning dictionary (10)
a) The remote control transmitting device characterized in that the reserved recording character is recognized by comparing any one of the dictionary data with the image information. 2. An image input section (6) for optically reading and photoelectrically converting a reserved recording character code (1) into image information consisting of binary data, and each number from "0" to "9". Of the dictionary data stored in the dictionary data storage unit that stores the dictionary data stored in the dictionary data and the dictionary data stored in the dictionary data storage unit. A remote controller transmitting device having a character recognition processing unit (9) for recognizing a numeric recording reserved character and having a recording reserved character recognition function for inputting a recording reserved character code (1) used in a simple recording reservation system The remote control transmission device, wherein the dictionary data stored in the storage unit is dictionary data obtained by compressing a plurality of dictionary data corresponding to different fonts. 3. The dictionary data stored in the dictionary data storage unit includes: (a) selecting any one character of each number from "0" to "9" as a reference character, and (b) different reference characters. Arbitrary dictionary data is selected as reference dictionary data from a plurality of types of dictionary data corresponding to a plurality of fonts, and (c) the distance L between the reference dictionary data and the remaining dictionary data in the reference character is obtained, respectively (d) The shortest distance L _MIN among the distances between the reference dictionary data and the dictionary data of other numbers is obtained, and (e) the reference dictionary data and the dictionary data in which the distance L obtained in (c) is shorter than the shortest distance L _MIN are obtained. The dictionary data is collected as one dictionary data group and the average value thereof is taken as one dictionary data, and (f) the distance L to the reference dictionary data is longer than the shortest distance L _MIN obtained in (d). Dictionary data From
The dictionary data that has not been selected as the reference dictionary data is set as the new reference dictionary data to be selected in (b), and (g) from (c) until all the dictionary data for the reference characters are selected as the reference dictionary data. f) is repeated, (h) Any one character is selected as a reference character from the remaining numbers, and (b) to (f) are repeated, and the remaining dictionary data for each number is compressed into dictionary data. The dictionary data compression method in the remote control transmission device according to claim 2, wherein