JPH066771A - Character broadcasting receiver - Google Patents

Abstract

PURPOSE:To extract character information displayed on a monitor screen by a cursor display. CONSTITUTION:A character broadcasting signal specified by a user is displayed on the screen of a monitor 9 through a display control part 7 and character codes displayed on the screen are stored in a memory 10 correspondingly to respective display positions on the display screen. Character data specified by the display of a cursor are read out from the memory 10 and written in a data memory 11. The data of the memory 11 are updated by new data stored in the memory 10. The data stored in the memory 11 are converted into a signal 16 of a prescribed format by a signal conversion part 15 and the signal 16 is sent to a connected device such as a VTR, a personal computer and a television image receiver.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiver, extracts various text information by teletext,
The present invention relates to a device for sending predetermined processed data to a connected device such as a personal computer or a television receiver.

[0002]

2. Description of the Related Art Teletext is used for various news, weather forecasts,
Information such as stock information and services such as supplementation of TV programs by subtitle supermarkets are currently being provided on each channel.
This teletext is a system that superimposes character / figure data on a part of the vertical blanking period of the TV video signal and broadcasts it, and data such as characters / alphanumerics / symbols is coded and sent. . FIG. 3 is a block diagram of essential parts showing an example of a conventional teletext receiver. In FIG. 3, 1 is an antenna,
Reference numeral 2 is a tuner, which amplifies and detects a television broadcast signal and converts it into a video signal for output. A data sampling unit 4 separates the superimposed character broadcasting signal from a predetermined position in the vertical blanking period from the video signal and outputs an error-corrected character signal. Reference numeral 5 denotes a RAM for temporarily storing a character signal, which extracts and stores a character signal designated by the user from the character signal output from the data extracting unit 3.
A character generator 6 decodes the character data from the RAM 5 into the character data for screen display. A display control unit 7 writes the decoded character data in an image display memory (hereinafter abbreviated as VRAM) 8, reads the written data from the VRAM 8, converts the data into an image signal, and outputs the image signal. Reference numeral 9 is a monitor for displaying an image signal output from the display control unit 7, and 13 is an input unit for receiving a remote control signal input from the remote control 14. Reference numeral 17 denotes an MPU (microprocessor unit), which is connected to each of the above parts through a bus line 18 and controls each related part such as control of writing / searching / reading of data according to a program loaded in the program ROM 19. To do.

Next, the operation will be described. When the user operates the remote controller 14 and selects a desired teletext program, the desired teletext program is extracted from the teletext signal output from the data sampling unit 4 based on the selected program number, and the series of text signals of the extraction are extracted. Are stored in the RAM 5. The data stored in the RAM 5 is a signal to which various control data such as display position control and data such as program management information are added in addition to the character data displayed on the screen of the monitor 9. Next, the character data in the RAM 5 is decoded by the character generator 6 into a digital signal capable of pattern display, and is input to the display controller 7 together with the display position control data. Then, it is written on the pattern surface of the VRAM 8 which is stored corresponding to each display position on the display screen. The display control unit 7 reads the data written in the VRAM, converts it into an analog signal, and displays it on the screen of the monitor 9.

Since data such as characters, alphanumeric characters and symbols are coded in teletext, if a particular character or number on the display screen is designated by a cursor display or the like, the character designated by the telecast receiver is displayed.・ Basically, it is possible to identify the contents by decoding the numerical code. However, in the conventional teletext receiver, as described above, the data stored in the RAM 5 is a series of data to which various control and information data are added, and there is no one-to-one correspondence with the display screen. Further, the data stored in the VRAM 8 is pattern data obtained by decoding a character code and its contents are difficult to decipher, so that the character data designated by the cursor display cannot be extracted from an arbitrary display screen.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above point, and an object thereof is to extract data designated by cursor display from character information displayed on a monitor screen. The second is to automatically update the teletext data specified and stored with the cursor display with the latest teletext information, and the third is to process the extracted teletext data. Then, it is to provide a teletext receiver adapted to convert a signal of a predetermined format and send the data to a connected device.

[0006]

In order to solve the above problems, the present invention solves the above-mentioned problems by storing a data extracting section for extracting a character broadcasting signal from an input TV broadcasting signal and storing and retrieving received data output by the data extracting section. A cursor display for designating specific display data on a display screen in a teletext receiver including a control unit for controlling read-out and the like and a display control unit for converting the read-out data into a signal for display on a monitor screen. An input section for operating the etc., a memory for storing data such as a character code and a figure code by a teletext signal corresponding to each display position of the display screen, and a specified data based on the cursor display of the user. A data memory which is read from the memory and stored, and a signal conversion unit which converts the data stored in the data memory into a signal of a predetermined format and sends the signal to a connected device It is to provide a teletext receiver which is Te.

[0007]

With the above construction, in the teletext receiver according to the present invention, the teletext signal designated by the user is
The codes such as characters and figures of the screen display are displayed on the monitor screen via the data extracting unit and the display control unit, and are stored in the memory corresponding to the respective display positions of the display screen. The character data designated by the cursor display on the display screen is read from the memory and written and stored in the data memory, and the stored data in the data memory is updated with new data in the memory. Further, the data stored in the data memory is converted into a signal of a predetermined format by the signal conversion unit and sent to a device such as a connected VTR, personal computer, or television receiver.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a teletext receiver according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram of essential parts of an embodiment of a teletext receiver according to the present invention. In the figure, the same parts as those in FIG. 3 are designated by the same reference numerals, and duplicate description will be omitted. In FIG. 1, 3 is a channel selection section for transmitting a channel selection signal to the tuner 2, 10 is a memory for storing code data such as characters and figures from the RAM 5 at each display position of the display screen, and 11 is a user. Is a data memory for reading out the teletext data designated by the cursor display from the display screen of the monitor 9 from the memory 10 and storing the read data together with the teletext channel, program number, etc. for data identification, and 12 is a date A clock unit 15 for outputting time data, and a signal converter 15 for converting the data stored in the data memory 11 into a signal 16 of a predetermined format and outputting the signal 16 to a connected VTR, personal computer, television receiver or the like.

Next, the operation of the teletext receiver according to the present invention configured as described above will be described with reference to the flowchart of FIG. Now, when the program number of the teletext is input by the key operation of the remote controller 14, the remote control signal by the same operation is received by the input unit 13. The MPU 17 detects an input signal (step 1, YES, hereinafter abbreviated as ST), extracts the data of the program from the character signal from the data sampling section 4 based on the input program number, and temporarily stores the data in the RAM 5. Store. The character data is read from the RAM 5 and displayed on the screen of the monitor 9 via the character generator 6 and the display controller 7, and the character data is written in the memory 10 in correspondence with the display position of the screen (ST2). Next, wait for the cursor key input, and if there is the same input (ST3, YES), the data specified by the cursor display is read from the memory 10, and the same data is stored together with the channel number, program number, etc. for data identification. Write to memory 11 (ST4). Next, if there is no input from the remote controller 14 (ST1, NO), MPU17
Checks whether or not there is data stored in the data memory 11. If there is data (ST5, YES), first, the channel number, program number, etc. for data identification are read from the data memory 11. Then, the tuner 2 is switched to the channel via the channel selection unit 3, the target data is extracted from the character signal output from the data extraction unit 4 by the program number, and the RAM is stored.
Write to memory 10 via 5 (ST6). Then, the data in the memory 10 and the data memory 11 are collated to check whether data is added, deleted or changed (ST7).
If there is a change (ST8, YES), the data in the data memory 11 is updated with the data in the memory 10 (ST9), and if there is no change (ST8, NO), the stored data in the data memory 11 is used as it is. . Data memory obtained in this way
11 The stored data is converted into a signal of a predetermined format by the signal conversion unit 15.
Is converted and sent to the connected device (ST10).

By the above control program, it is possible to use various kinds of teletext signals by combining a connected device such as a VTR, a personal computer or a television receiver and the teletext receiver according to the present invention. In the case of VTR, the TV program information by teletext is displayed on the screen of the monitor 9,
A desired TV program is extracted from the memory 10 by the cursor display and a recording reservation is made in the data memory 11. When the reserved TV program is changed such as being canceled or changing the broadcast time, the data in the data memory 11 is automatically updated. When the broadcast start time of the reserved TV program and the data output from the clock unit 12 match, the signal conversion unit 15 transmits the control signal 16 of a predetermined format to the connected VT.
It is sent to R to instruct to start recording the reserved program, and to end recording at the broadcast end time. Further, in the case of a personal computer, for example, when stock information by teletext is displayed on the screen of the monitor 9 and a desired brand is designated by the cursor display, the designated information is extracted from the memory 10 and the data memory 11 is selected.
Register with. The stock price data of the registered brand is automatically updated to a new one, converted into a signal 16 of a predetermined format by the signal converter 15 and transferred to the connected personal computer, and processing such as stock price analysis can be performed. Then, in the case of a television receiver, it becomes possible to reserve a designated program and control the on / off timer of the television receiver using the broadcast start / end times by using the television program information by teletext.

[0011]

As described above, in the teletext receiver according to the present invention, the teletext signal designated by the user is displayed on the monitor screen via the data sampling section and the display control section, and Codes such as display characters and figures are stored in the memory corresponding to the respective display positions on the display screen. Therefore, the character data designated by the cursor display on the display screen can be easily read from the memory, and the read data is written and stored in the data memory. Further, the data stored in the data memory can be updated with new data in the memory. The character data obtained by the character broadcast thus obtained is converted into a signal of a predetermined format by the signal conversion unit and used for control of a device such as a connected VTR or a television receiver, or connected to a personal computer. It is possible to construct a data analysis system.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts showing an embodiment of a teletext receiver according to the present invention.

FIG. 2 is a flowchart showing an operation of the teletext receiver according to the present invention.

FIG. 3 is a principal block diagram showing an example of a conventional teletext receiver.

[Explanation of symbols]

 1 antenna 2 tuner 3 channel selection unit 4 data extraction unit 5 RAM 6 character generator 7 display control unit 8 VRAM 9 monitor 10 memory 11 data memory 12 clock unit 13 input unit 14 remote control 15 signal conversion unit 16 conversion signal 17 MPU 18 bus line 19 Program ROM

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hirotaka Tanaka, 1116 Suenaga, Takatsu-ku, Kawasaki City, Fujitsu General Co., Ltd. (72) Akira Matsui, 1116 Suenaga, Takatsu-ku, Kawasaki City, Fujitsu General, Ltd.

Claims (3)

[Claims] 1. A data extracting unit for extracting a teletext signal from an input TV broadcast signal, a control unit for controlling storage, retrieval, reading, etc. of received data output by the data extracting unit, and the read data. In a teletext receiver equipped with a display control unit for converting into a display signal on a monitor screen, an input unit for operating a cursor display or the like for designating specific display data on the display screen, a character code by a teletext signal, A memory for storing data such as a figure code corresponding to each display position on the display screen; a data memory for reading and storing specified data based on the cursor display of the user from the memory; A teletext receiver comprising: a signal conversion unit for converting data into a signal of a predetermined format and transmitting the signal to a connected device. 2. The teletext receiver according to claim 1, wherein the stored data in the data memory is updated automatically by searching the stored data in the memory. 3. The teletext receiver according to claim 1, wherein the connection device is a VTR, a personal computer or a television receiver.