JP2503951B2 - Receiving machine - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to an image information receiving system using a telephone line,
For example, the present invention relates to a receiver provided with a receiving circuit of a character / graphic information system (Videotex) and a television receiving circuit.

[Prior Art and its Problems] In recent years, a so-called videotex, which is a character / graphic information system using a telephone network such as a captain system, has been put into practical use. As a terminal device of this videotex, a television receiver, a personal computer, etc. are used, but generally, a television receiver is often used to view a received image. When using a television receiver as a videotex terminal device as described above,
Conventionally, the received image of the videotex is simply displayed on the screen of the television receiver, and there has not yet been considered a device for controlling the television receiver by utilizing the function of the videotex.

[Object of the Invention] The present invention has been made in view of the above points, and utilizes a function of an image information receiving system to provide a television receiving circuit by receiving information such as tele-software sent via a telephone line. The purpose is to provide a controllable receiver.

SUMMARY OF THE INVENTION According to the present invention, a terminal of an image information receiving system is provided with a control function of a television receiving circuit, and the television receiving circuit is controlled by receiving information such as telesoft transmitted via a telephone line. It was made to be performed. For example, the television program information is sent as tele-software, and a program of a desired type (genre such as news, weather forecast, movie, etc.) can be automatically searched according to a user's instruction so that the channel can be received.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings.
First, the external structure of the television receiver will be described with reference to FIG. In FIG. 2, reference numeral 1 is a housing of a television receiver, and in the housing 1, a television receiving circuit and a receiving circuit of a character / graphic information system, the details of which will be described later, are provided. The front side of the casing 1 is formed obliquely, and the keyboard 2 is provided in that portion. In addition, the CRT display unit 3 is arranged on the upper part of the housing 1, and the telephone mounting portion 4 is formed on the side of the CRT display portion 3, and the telephone 5 is mounted on the telephone mounting portion 4.

Next, the configurations of the television receiving circuit 10 and the receiving circuit 20 of the character / graphic information system shown in FIG. 2 will be described in detail. In FIG. 2, reference numeral 12 is a tuner in the television receiving circuit 10, which selects a broadcast radio wave of a desired channel from among the television broadcast radio waves induced in the antenna 11 according to the instruction of the auto channel circuit 13 and converts it to an intermediate frequency.
Output to the TV circuit 14. The TV circuit 14 amplifies the TV signal sent from the tuner 12, then performs processing such as video detection, cycle separation, and audio detection, and outputs the video signal to the CRT display unit 3 via the display switching circuit 15. At the same time, the audio signal is output to a speaker (not shown). Furthermore, the above TV circuit
14 creates a tuning signal from the signal from the tuner 12, and outputs it to the auto channel circuit 13. A program memory 16 stores television program information, and a search circuit 17 and a flag control circuit 18 are connected to the program memory 16. A clock circuit 19 counts the date and time, and outputs the date and current time data of the day to the search circuit 17 and the flag control circuit 18. This equal control circuit
18 is a program memory according to the time data from the clock circuit 19.
For example, the rewriting control of the flag in 16 such as during program broadcasting and program end is performed. The search circuit 17 searches the contents of the program memory 16 according to an instruction from the keyboard 2 in the receiving circuit 20 of the character / graphic information system, and outputs a channel selection signal to the auto channel circuit 13.

The program memory 16 stores, for example, one month's worth of program information, and the address area is divided by date, and the head address (address x) is set for each. FIG. 3 shows the structure of a partial area (May 12) of the program memory 16. As program information, date, channel, day of the week, start time, end time, program type, and program are being broadcast. A flag F1 indicating that, a flag F2 indicating that the program has ended, a program name, etc. are set. These pieces of program information, which are read out from the information center of Videotex by the tele software, are written through the receiving circuit 20 of the character / graphic information system.

On the other hand, in the receiving circuit 20 of the character / graphic information system, the line control unit 21 is connected to a telephone line (not shown) via the terminal unit 22. The line controller 21 is connected to the telephone 5 and the videotex controller 25 via the modem 23 and the modem controller 24. Further, the videotex control device 25 is connected to the keyboard 2, the display memory 26, and the work memory 27, and also has a print memory.
A printer 29 is connected via 28. Display memory above 26
Is a memory for storing the received image of the videotex, and the stored data is sent to the CRT display unit 3 via the display switching circuit 15. Further, the videotex control device 25 outputs the TV program information to the television receiving circuit 10 when the TV program information is read out from the information center of the videotex by the tele software in accordance with the instruction from the keyboard 2, and outputs the program memory. Remember to 16. Further, the videotex control device 25, when the type of the program is designated by the keyboard 2, sends the type code and the search command to the search circuit.
Output to 17.

Next, details of the search circuit 17 in FIG. 1 will be described with reference to FIG. In FIG. 4, reference numeral 171 is an address generating circuit, and the address generating circuit 171 receives date data from the clock circuit 19 in FIG. 1 and receives a program search command from the keyboard 2 via the videotex controller 25. Given. The address generation circuit 171 is
It operates according to the search command from the keyboard 2, generates address data X according to the date data given from the clock circuit 19, and sets it in the address register 172. Then, the address data X set in the address register 172 designates the start address of the date area of the program memory 16 shown in FIG. Then, according to the designated address, information for one program, that is, "date",
The "channel", "day of the week", "start time", "end time", "type", "flag F1", "flag F2", and "program name" are read and written in the buffer 173. And
Among the information written in the buffer 173, “channel” information is the channel voltage generation circuit 174, “type” information indicating the type of program is a type code comparison circuit 175, and “flag F”.
1 ”is input to the flag determination circuit 176. The flag determination circuit 176 determines whether the flag F1 read to the buffer 173 is “1” or “0”, and if it is “0”, the OR circuit 17
A “+1” signal is output to the address register 172 via 7 and if it is “1”, a comparison command is output to the type code comparison circuit 175. Further, in the type code comparison circuit 175, a type code register 17 is provided with a code indicating the type of program input from the keyboard 2 via the videotex control device 25.
Given through 8. The above type code comparison circuit 175 is
The type code read to the buffer 173 when the "1" signal is given from the flag discrimination circuit 176 and the type code register 1
Matches and compares the type code input to 78, and outputs a match signal to the channel voltage generation circuit 174 if they match, and outputs a mismatch signal to the address register 172 via the OR circuit 177 if they do not match. . The channel voltage generation circuit 174, when the coincidence signal is given from the type code comparison circuit 175, generates a channel voltage according to the channel information given from the buffer 173 and outputs it to the auto channel circuit 13 of FIG.

Next, the operation of the above embodiment will be described. Prior to the television program search operation, as shown in the flow chart of FIG. 5, for example, one month's worth of television program information is read from the information center of Videotex by the tele software and stored in the program memory 16 of the television receiving circuit 10. Let That is, the user first specifies the videotex mode by operating the keys of the keyboard 2 as shown in step A1 in FIG. Then, the information center of Videotex is called by the telephone 5, and as shown in step A2, the television program including, for example, one month's worth of television program information, that is, broadcasting station data, broadcasting time data, and program type data is used. Receive information. In the videotex mode, the display switching circuit 15 is switched to the display memory 26 side, and the received videotex image stored in the display memory 26 is displayed on the CRT.
It is displayed on the display unit 3. Then, when the TV program information is sent from the information center as telesoftware, the videotex control device 25 steps through the TV program information.
Store in program memory 16 at A3. After that, the videotex control device 25 sends a command to the search circuit 17, causes it to execute the initial process shown in FIG. 6 in detail in step A4, and ends the program information receiving process.

Next, details of the initial processing in step A4 will be described with reference to FIG. First, the search circuit 17 sets the designated address N of the program memory 16 to "1" (start address) as shown in step A11 of FIG. 6, and reads the contents of the designated address from the program memory 16 in step A2. Then, as shown in step A13, the date of the program read from the program memory 16 and the current time (the current day) measured by the clock circuit 19
If the current date is larger than the current date, that is, if the broadcast date has already ended before yesterday, go to step A14 and set the flag F2, then step A16 Proceed to. If the current date and the program date match, step A13 to step A13
In step 15, it is determined whether or not the current time measured by the clock circuit 19 has passed the end time of the program. If the current time has passed the end time of the program, the flow proceeds to step A14 and the flag F2 Set. However, if the current time has not passed the end time of the program, the process proceeds from step A15 to step A16. If it is determined in step A13 that the current date is smaller than the date of the program, that is, the program has not been broadcast, the process proceeds to step A16. In this step A16, it is judged whether or not the designated address N of the program memory has reached the final address. If the final address has not been reached, the designated address N in step A is determined.
After "+1", returns to step A12. Thereafter, similar processing is repeated to sequentially read the program information from the program memory 16 and determine whether or not the broadcast of the program is finished, and set the flag F2 for the broadcasted program. When the designated address N of the program memory 16 reaches the final address, that state is detected in step A16, and the initial process is terminated.

After the television program information is stored in the program memory 16 as described above, and after the end of the initial process, the type of an arbitrary program can be designated by the key operation of the keyboard 2 to automatically search. To search for TV programs, use the keyboard 2 as shown in step B1 of FIG.
Press the key to switch to TV mode and operate the program key. When switched to the TV mode, the videotex control device 25 always checks whether or not the program key is operated as shown in step B2, and when the program key is not operated, it waits for input to another key. In addition to the state, the normal TV receiving state is set, and the video signal output from the TV circuit 14 is displayed on the CRT display unit 3. However, when the program key is operated, the videotex control device 25
The process proceeds from B2 to step B3, and the program menu is displayed on the CRT display unit 3. That is, as shown in FIG. 8, "news", "weather forecast", "baseball", "sports", "movie", "education", "drama", "song", "manga",
Program menus such as “quiz”, “wide” (wide program), and “control” are displayed on the CRT display unit 3 together with corresponding numbers. The user can use the CRT display 3 as shown in step B4.
The corresponding number of the desired program is designated from the program menu displayed on the screen by operating the keys of the keyboard 2. When the program designation number is entered, the videotex controller 25
As shown in step B5, the type code of the designated program and the search command are output to the search circuit 17, and then the state is kept as it is in step B6 until the search is completed. Then, when the search operation of the search circuit 17 is completed and the designated station is selected, the videotex control device 25 enters a state of waiting for another key input, and enters a normal TV reception state,
The program of the station selected by the search circuit 17 is displayed on the CRT display unit 3
To display the image.

Next, detailed operations of the search circuit 17 and the flag control circuit 18 will be described. In FIG. 1, the program memory 1
6, the search circuit 17, the flag control circuit 18, and the clock circuit 19 are always supplied with the operating voltage regardless of whether the power is turned on or off. Then, the clock circuit 19 constantly performs the time processing of the current time and the current date, and supplies the current time information and the date information of the current day to the search circuit 17 and the flag control circuit 18. The flag control circuit 18 controls the rewriting of the flags F1 and F2 of the program information stored in the program memory 16 based on the time information from the clock circuit 19. FIG. 9 shows a flowchart of the rewriting process of the flags F1 and F2, and its operation will be described below with reference to this flowchart. The flag control circuit 18 sends 1 from the clock circuit 19 as shown in step C1 of FIG.
The minute pulse detection process is being performed. When the one minute pulse is detected, the process proceeds to step C2 to read the date data from the clock circuit 19. Then, the flag control circuit 18 proceeds to step C3.
As shown in FIG. 3, a start address X and an end address X _END for the corresponding date area of the program memory 16 are generated according to the date data read from the clock circuit 19. Then, the flag control circuit 18 sets the designated address N for the program memory 16 to the start address X as shown in step C4, and
The contents stored in the program memory 16 are read out at C5. And
In step C6, determine whether flag F2 is set, and if flag F2 is not set, step
Proceed to C7 to determine whether the current time has passed the broadcast start time. Then, if the current time has passed the broadcast start time, the process proceeds to step C8 to determine whether the current time has reached the broadcast end time, and if the current time has not reached the broadcast end time, that is, the current time If it is being broadcast, step C9
At, the flag F1 is set. However, if the current time reaches the end time of the broadcast, step C8 to step C1
Proceeding to 0, the flag F2 is set and the flag F1 is reset. Then, the above step C9 or step C10
When the process of step S6 is finished, or when it is determined that the flag F2 is set (broadcast end) in step C6, or when it is determined that the current time has not reached the broadcast start time in step C7 , Step C11
Then, it is judged whether or not the memory designated address N has reached the end address, and if it has not yet reached the end address, the memory designated address N is set to "+" in step C12.
1 ”and return to step C5. Thereafter, the same operation is repeated, and if the program is being broadcast, the flag F1 is set, and if it is the program ending, the flag F2 is set. When the processing for the current day area of the program memory 16 is completed, the determination result of step C11 becomes YES and the process returns to step C1 to wait until the next one-minute pulse is sent from the clock circuit 19. Clock circuit as above
Rewriting control of the flags F1 and F2 is performed each time a 1-minute pulse is output from 19

Although the flags F1 and F2 of the program memory 16 are constantly rewritten by the flag control circuit 18 as described above, the type of program is specified by the key operation of the keyboard 2 as described above. When the type code and the search command are output from the videotex controller 25 to the search circuit 17 at B5, the search circuit 17 starts the program search processing. That is, the type code sent from the videotex control device 25 to the search circuit 17 is set in the type code register 178, and the search command is input to the address generation circuit 171. This address generation circuit 171 receives the above-mentioned search command from the clock circuit 19
The start address X of the date area of the program memory 16 is generated in accordance with the date information from and is set in the address register 172. Based on the data set in the address register 172, the start address X of the area by date of the program memory 16
Is designated and the information for one program at the designated address is read from the program memory 16 to the buffer 173. When the program information is read into this buffer 173, first, the flag F1
Is sent to the flag determination circuit 176, and the content thereof is determined. If the program read to the buffer 173 is not being broadcast, the flag F1 is "0". In this case, therefore, the flag discriminating circuit 176 outputs the "+1" signal via the OR circuit 177, and the address register 172 stores the signal. The content is incremented by "+1". As a result, the next address of the program memory 16 is designated, and the program information stored at that address is read into the buffer 173. Then, in the same manner as in the above case, the content of the flag F1 is determined by the flag determination circuit 176. Flag F1 is "0"
If so, the same operation as described above is repeated, but if the flag F1 is "1", that is, if the program is being broadcast, the search circuit 17 sends a "1" signal to the type code comparison circuit 175. . This type code comparison circuit 175 is a flag discrimination circuit 1
When the "1" signal is given from 76, the type code held in the buffer 173 at that time is compared with the type code held in the type code register 178, and if they do not match, that is, read to the buffer 173. When the program is not the program designated by the keyboard 2, the mismatch signal is output to the address register 172 via the OR circuit 177. As a result, the contents of the address register 172 are incremented by "+1" to specify the next address of the program memory 16, and the contents are buffered.
173. When new program information is set in the buffer 173, the flag F1 and the type code are checked as described above. Then, when the type code held in the buffer 173 and the type code held in the type code register 178 match, the type code comparison circuit 175 sends a match signal to the channel voltage generation circuit 174. That is, when "news" is designated as the type of program by the keyboard 2, when the "news" program currently being broadcast is read from the program memory 16 to the buffer 173, a match signal is output from the type code comparison circuit 175. Is output and sent to the channel voltage generation circuit 174. When the type code matching signal is given, the channel voltage generating circuit 174 generates a voltage according to the channel code held in the buffer 173 and outputs it to the auto channel circuit 13. This auto channel circuit
When the channel voltage is given from the channel voltage generation circuit 174, the tuner 13 responds to the channel voltage according to the channel voltage.
Controls 12 reception frequencies and selects the station of the specified channel. When the type of program is designated by the keyboard 2 as described above, the channel broadcasting the program is selected and displayed on the CRT display unit 3 as an image. If no station is playing a program of the specified type such as "news", the station selected at that time is continuously received as it is. Also, when two or more stations are simultaneously playing the specified type of program, the station with the youngest turn is received.

[Effects of the Invention] As described in detail above, according to the present invention, the terminal of the image information receiving system is provided with the control function of the television receiving circuit, and the received information such as tele-software sent via the telephone line is received. Since the television receiver circuit is controlled by, for example, the type (news, weather forecast,
A program of a genre such as a movie) can be automatically searched according to a user's instruction, and control such as channel selection reception can be easily performed.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a block diagram showing a circuit configuration, FIG. 2 is a perspective view showing an external configuration, and FIG. 3 is a diagram showing an example of information storage in a program memory. FIG. 4 is a block diagram showing details of the search circuit in FIG.
FIG. 5 is a flow chart showing the operation of receiving program information, FIG. 6 is a flow chart showing the details of the initial processing in FIG. 5, FIG. 7 is a flow chart showing the search operation of the program, and FIG. 8 is a display example of the program menu. Showing the ninth
The figure is a flowchart showing the flag rewriting process for the program memory. 1 ... Television receiver housing, 2 ... Keyboard, 3
…… CRT display, 4 …… Telephone mount, 5 …… Telephone, 10
…… Television receiving circuit, 11 …… Antenna, 12 …… Tuner, 13 …… Auto channel circuit, 14 …… TV circuit,
15 …… Display switching circuit, 16 …… Program memory, 17 …… Search circuit, 18 …… Flag control circuit, 19 …… Clock circuit, 20 ……
Character / figure information system receiving circuit, 21 ... Line control unit, 23
...... Modem, 24 …… Modem controller, 25 …… Videotex controller, 25,26 …… Display memory.

Claims (2)

(57) [Claims] 1. A receiver in an image information receiving system in which a receiving terminal receives information sent from an information center, the television receiving circuit, and a control circuit for controlling the television receiving circuit. An information receiving circuit for receiving information sent from the information center, and a memory for storing data relating to a television program received from the information center by the information receiving circuit are provided, and the control circuit is provided in the memory. A receiver comprising means for controlling a television program received by the television receiving circuit according to stored data relating to the television program. 2. A receiver in an image information receiving system in which information sent from an information center is received by a receiving terminal, which is broadcast station data, broadcast time data, and program type data sent from the information center. Information receiving means for receiving program information including, program information storing means for storing the program information received by the information receiving means, designating means for designating the type of program, and type designated by this designating means And a program receiving means for selecting and receiving the broadcasting station of the program searched by the searching means, and a searching means for searching the program currently being broadcast by the program information stored in the program information storing means. A receiver characterized in that.