JPH06245160A - Teletext receiver - Google Patents

Abstract

PURPOSE:To display a revised date and time of a reserved program by comparing a revision flag of reserved data stored in a memory with a revision flag received and stored this time and revising the date and time into a measured date and time when any revision is in existence. CONSTITUTION:A reserved channel number, a program number, a page number and a switching time or the like of a tuner 1 are registered in a memory 5. Then a tuner 1 is switched for a predetermined period, a character signal processing section 2 detects a character program number, a revision flag for each page from a received character program to generate page data of a program and they are stored in the memory 5 while being related to the reserved program number. Thus, the revision flag is compared with a preceding revision flag at a comparator section 6 and when any revision is in existence, the date and time stored in the memory 5 is revised into measured data by a clock 7 and the revision date and time of the reserved program is displayed. Thus, the time is confirmed when the displayed program is revised.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiver having a function of storing reserved programs, and more particularly to a teletext receiver for displaying the update date and time of the stored program on a screen.

[0002]

2. Description of the Related Art Conventionally, a teletext receiver having a function of storing a reserved program (page memory) has no problem of so-called "wait time" when a program is selected, and the program stored in the memory can be immediately stored. Can be displayed on. The conventional page memory function, for example, detects a reserved text program and stores it in the page memory while switching the tuner at predetermined time intervals while the television is not being watched. Therefore, the reserved program can be instantly called from the memory and displayed by the method of selecting the program or the method of designating the program and page. However, in teletext, not all programs are broadcast every day, but the broadcast date is fixed for each program. Therefore, among the stored programs, the contents of a certain program may be old data and not updated, and there is a problem that it is not easy to know when the displayed program is updated.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a teletext receiver that displays the update date and time of a reserved program when the reserved program is displayed. With the goal.

[0004]

In order to achieve the above object, channel selection means for receiving and demodulating a desired television channel and outputting a video signal, and superposed on a predetermined horizontal scanning line of the video signal. Character signal processing means for taking out a data packet of teletext and error-correcting and decoding it to generate page data and the like, first storage means for storing image data generated from the page data and the like for display, and a predetermined signal form The second means for storing the output means for outputting the character signal, the data in the form in which the channel number, the program number, the page data of the program, the update flag and the update date and time are associated with each other, and the time data for switching the channel selection means. Storage means,
It comprises an input means for instructing a command and the like, a comparison means for comparing the previous and present update flag data, a means for measuring and outputting the date and the like, and a means for controlling each part.

[0005]

With the above construction, the channel number and the program number to be reserved, the page number, the switching time of the channel selection means, and the like are registered in the second storage means, so that the channel selection means can be operated at a predetermined cycle. After generating the page data of the program by detecting the program number and the update flag for each page from the received text program and comparing the received text program with the registered program number. , The program number is stored in the second storage means in association with the program number, and the update flag and the update flag at the time of the previous reception are compared by the comparison means. The data supplied by the means for measuring and outputting etc. are also stored in the second storage means as a new update date and time.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 an embodiment of a teletext receiver according to the present invention. A tuner 1 receives a desired television channel, demodulates it, and outputs a video signal. Reference numeral 2 denotes a character signal processing unit that takes out a character broadcast data packet superimposed on a predetermined horizontal scanning line of the video signal, performs error correction, and decodes it to generate page data and the like. An output unit 3 outputs a character signal in a predetermined signal form. A display memory 4 stores image data generated from the page data and the like for display. Reference numeral 5 is a memory for storing data in a form in which a channel number, a program number, a page number, program data, an update flag and an update date and time are associated with each other, and time data for switching the channel selection means. Reference numeral 6 is a comparison unit that compares the previous update flag data with the current update flag data. Reference numeral 7 is a clock for measuring and outputting the date and the like. 8
Is an input unit for instructing commands and the like. Reference numeral 9 is a control unit that controls each unit.

The operation of the teletext receiver according to the present invention will be described. FIG. 2 is a conceptual diagram showing a form of each data associated with each other, which is stored in the memory of the teletext receiver according to the present invention. Reference numeral 10 is a television channel on which the reserved program 11 is broadcast. Reference numeral 11 is a reserved program stored in the memory 5. Reference numeral 12 is a page on which the program is being broadcast. Reference numeral 13 is an update flag for each page of the program. Reference numeral 14 is an update date and time based on the change point of the update flag. For example, when one page of the program A is selected, the update date / time 14 outputs the data of “February 1, 10:00 AM” stored in association with the one page of the program A.

FIG. 3 is a flowchart showing the operation of storing reserved programs and update dates and times in the teletext receiver according to the present invention. After switching the tuner 1 to a predetermined channel, the character signal processing unit 2 takes out a data packet of a character broadcast superimposed on a predetermined horizontal scanning line of a video signal, performs error correction, and decodes it to generate page data. At the same time, the program number, page number, update flag, etc. are detected (STP1). The detected program number and page number are compared with the corresponding data which is reserved and registered in the memory 5 in the comparison unit 6, and the reserved program is received (STP2).
If YES), the page data is stored in the memory 5 (STP3). Then, the program number, the page number, the update flag, and the current date and time data supplied by the clock 7 are stored in the memory 5 (STP4). When the comparison unit 6 compares the stored previous update flag data with the current data, and if there is a change in the data (YES in STP5), the page data stored this time contains the current date and time data supplied by the clock 7. The update date and time are also stored in the memory 5. If the received program is not a reserved program (NO in STP2), the reception state of the program is continued (return to STP1). Further, there is no change in the update flag data (STP5
If NO), the previous data is stored as the update date without being changed.

FIG. 4 is a screen display example of reserved programs and update dates and times of the teletext receiver according to the present invention. Reference numeral 20 is a screen display of a text program, for example, which simultaneously displays a screen display 21 of a predetermined time and update date and time when the reserved program is read from the memory and displayed on the screen. The display data of the update date and time is read from the memory 5, written in a predetermined address of the display memory 4, and displayed on a part of the screen display 21 on-screen for a predetermined time. Further, the screen display 21 of the update date and time may be called up as needed.

[0010]

As described above, the present invention provides a teletext receiver in which, when the reserved program is displayed on the screen, the update date and time of the program is displayed on the screen. Therefore,
It is possible to solve the problem of the conventional teletext receiver that the display screen data update date and time cannot be easily confirmed.

[Brief description of drawings]

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

FIG. 2 is a conceptual diagram showing a form of respective data stored in a memory of the teletext receiver according to the present invention and associated with each other.

FIG. 3 is a flowchart showing a storage operation of reserved programs and update dates and times of the teletext receiver according to the present invention.

FIG. 4 is a screen display example of reserved programs and update dates and times of the teletext receiver according to the present invention.

[Explanation of symbols]

 1 tuner 2 character signal processing unit 3 output unit 4 display memory 5 memory 6 comparison unit 7 clock 8 input unit 9 control unit 10 channel 11 reserved program 12 pages 13 update flag 14 update date and time 20 character program screen display 21 update date and time screen display

Claims (1)

[Claims] 1. A channel selecting means for receiving a desired television channel, demodulating and outputting a video signal, and extracting a character broadcast data packet superimposed on a predetermined horizontal scanning line of the video signal for error correction and decoding. Character signal processing means for generating page data and the like, first storage means for storing image data generated from the page data and the like for display, output means for outputting a character signal in a predetermined signal form, and channel number Second storage means for storing data in a form in which a program number, program page data, an update flag, and an update date and time are associated with each other, and time data for switching the tuning means, and an input means for instructing a command or the like. , A character means comprising a comparison means for comparing the update flag data of the previous time and this time, a means for measuring and outputting the date and the like, and a means for controlling each part. Transceiver.