JPH02180484A - Receiver - Google Patents

Abstract

PURPOSE:To observe latest character information without waiting time when the character information of a desired program, to which reservation it set, is displayed by always storing the latest character information to a memory for reserved program character information storage. CONSTITUTION:Even in a condition that the main power source of a television receiver is turned off, a weak current is fed from a standby power source circuit 13. A controller 3 successively reads reserved program data stored in a memory 3a and sends the station selection data of a correspondent channel to a tuner circuit 2. Then, teletext reserved program selection data is sent to a character processor 9. Based on the reserved program selection data inputted from the controller circuit 3, the character processor 9 stores all pages in the character information of the reserved teletext program to a memory 9d for reserved program character information storage. To these stored character information, reloading is executed every time the character information are updated. Then, the latest data is always stored.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a receiving device that receives teletext.

[Summary of the Invention] The present invention is a receiving device that receives teletext, selectively receives text information of a teletext program for which a reservation has been set, and stores the latest data at all times, for example, even during standby mode when the main 1ltia is turned off. By storing it in the means,
When displaying the text information of the programmed program, the text information can be displayed immediately without waiting time.

[Conventional technology]

Teletext broadcasting encodes text information using a hybrid method that takes advantage of the pattern transmission method and code transmission method, and allows various kinds of text information such as stock information, weather forecast, program information, news, etc. to be transmitted in the vertical direction of the television signal. It is transmitted superimposed on the line erasing period, and the receiving side can select and display any character information from the various transmitted character information.

The structure of such teletext broadcasting is that each channel has a number from 1 to 9 to identify the program group, and below that there are numbers from 000 to 999 to identify the program. Each program has pages 0 to 99.

Since it takes about 20 seconds to transmit one page, it takes a considerable amount of time to wait until the information about the program you want to watch is displayed on a television receiver with a built-in teletext decoder. Is required.

Therefore, in order to shorten the above waiting time, it is possible to memorize only one page of all the programs that are transmitted while being superimposed on the television signal of the channel that is currently being received, or to store the teletext program that is currently being selectively received. It has been proposed to store the character information of all pages about. The information stored here is retained even when the power is turned off.

The text information is limited to the teletext program that was within the range of the channel you were watching before you turned off, or the text information of the teletext program that you were selectively receiving. Since it is necessary to newly import and display the text information of the other program, it takes time to display the text information of the other program.

Furthermore, the content stored in the storage means is the text information immediately before the power was turned off, and is not rewritten after the television receiver is turned off, so even when watching the same teletext program, the current latest data is displayed. It will take some waiting time.

In view of the above problems, the present invention aims to provide a receiving device that can display the latest character information of a desired program without waiting time.

[Problem to be solved by the invention]

By the way, even in such a conventional receiving device capable of storing character information, character information that can be viewed immediately without waiting time when the power is turned on next time can be obtained by using the power source according to the present invention. In order to solve the above-mentioned problem, the receiving device receives text information superimposed on a television signal and transmitted, and includes a control means for presetting information regarding a desired teletext program, and the control means. The present invention is characterized in that it has a storage means for always storing the latest data of character information of the program scheduled for reservation, and a power supply means for constantly supplying power to the control means and the storage means.

[For production]

Since the receiving device according to the present invention can constantly update and store the text information of the reserved desired teletext program, it is possible to display the text information of the desired program without waiting time. .

〔Example〕

Embodiments of a receiving device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block circuit diagram showing a schematic configuration of a television receiver which is an embodiment of a receiving device according to the present invention.

In the television receiver shown in FIG. 1, a receiving antenna l receives television broadcast waves and sends them to a tuner circuit 2. This tuner circuit 2 is supplied with channel selection data from the controller 3.
A television broadcast signal of a desired channel corresponding to this channel selection data is selected (tuned) in the tuner circuit 2 and converted into an intermediate frequency signal. In the vertical blanking period of this televised broadcast signal, a signal of text information of a teletext broadcast is superimposed. The intermediate frequency signal from the tuner circuit 2 is amplified by a VIP circuit (intermediate frequency amplification circuit) 4, and then sent to a video detection circuit 5 and an audio signal processing circuit 6.
sent to.

This audio signal processing circuit 6 detects an audio signal from the output from the VIF circuit 4 and sends this audio signal to an input terminal 8a of a switch circuit 8. The output from the switch circuit 8 is sent to a speaker 10 which is a sound emitting means.
is supplied to

The detection output from the video detection circuit 5, for example NTSC
The composite color video signal of the system is processed by the video signal processing circuit 7.
and a character processor 9, a video signal processing circuit 7 processes the decoded color video signal and finally outputs R,
The RGB processor 11 forms three primary color signals of C, , and B.
The signal is sent to a display means 12 such as a CRT (cathode ray tube).

The character processor 9 is a CPU (central processing unit)
9a, and a memory 9b such as a RAM (random access memory) which is a means for storing various character information.

It consists of 9c and 9d. These memories 9
b, 9c, and 9d include a first memory 9b for storing only the first page of all teletext programs in the channel currently being received, and all pages of the teletext program currently being selectively received. a second memory 9C for storing;
Programs that are reserved during the reservation operation described later (reserved programs)
memory 9d for storing character information of all pages. This character processor 9 separates the character information signal within the vertical blanking period in the video signal manually inputted from the video detection circuit 5, reproduces the data, and writes it into the memories 9b, 9c, and 9d. Memory 9d and 9C are for storing text information of teletext superimposed on the television signal of the channel currently being received when the main power is turned on.
, the text information of the scheduled teletext program is always stored even when the main power is turned off. The character information stored in these memories 9b, 9c, and 9d is read out in response to display requests, and
By being decoded by the U9a etc., it becomes a character display signal and is sent to the RGB processor 11. The RGB processor 11 receives the three primary color signals R from the character processor 9.
, G, B, and the three primary color signals R1G, B from the video signal processing circuit 7 are switched and controlled based on a switching signal Svz from the character processor 9. As a result, the characters decoded by the character processor 9 can be used alone or in the form of being superimposed on the television broadcast image.
It is displayed on display means 12 such as T.

Note that an additional sound is specified in the above character information, and this additional sound is input to the input terminal 8b of the switch circuit 8. Therefore, the switch circuit 8 controls the above-mentioned audio by the control signal SVl from the character processor 9. The signal and the additional sound of the text information are switched and controlled, and the respective sounds are output from the speaker 10.

By the way, the controller 3 controls at least the channel selection operation of a television receiver, which is a receiving device, and during normal operation when the main power is supplied from the power supply circuit 14, it controls, for example, a commander (remote control). When a desired channel is selected using the operation command device 16, this remote control signal is input to the controller 3 via the receiving circuit 15, and the controller 3 selects a channel according to the above operation. ) data is sent to the tuner circuit 2. This controller 3 is provided with a memory 3a for teletext program reservation.
For example, a reserved program setting table as shown in Table 1 below is stored in a.

(Margin below) Table 1 The reserved program (teletext number) setting table shown in Table 1 can be displayed on the display means 12 such as the CRT, and the user can use the commander 16, for example, to select the desired channel ( CI), program (character number).

Program names (memos), etc. can be reserved by remote control. That is, when a desired teletext program reservation setting operation is performed using the commander 16, this setting signal is transmitted to the receiving circuit 1.
5 and input to the controller 3. The controller 3 writes data (reserved program data) corresponding to the reservation setting operation into the memory 3a.

Here, even if the main power supply of the television receiver is turned off, a small amount of power is supplied from the standby power supply circuit 13 in the power supply circuit 14 due to a weak current from the power outlet or a backup battery. , this standby power supply at least tuner circuit 2,
The signal is sent to the controller 3, VIF 4, video detection circuit 5, and character processor 9, and these circuits are in operation.

Next, the operation after the teletext program is reserved (stored in the memory 3a) will be explained with reference to the flowchart shown in FIG.

In step S1 of FIG. 2, it is first determined whether or not the main power source of the device (television receiver) is turned on. If YES, normal channel selection operation is performed; if NO, ( (when in standby state), step S2
Proceed to.

Next, when the process proceeds to step S2 during standby operation, the controller 3 stores the memory 3a as described above.
The reserved program data written in Table 1 stored in the table 1 is sequentially read out, and the tuning data of the corresponding channel is sent to the tuner circuit 2, and the teletext reserved program selection data is sent to the text processor 9, and the process proceeds to step S3. move on.

In step S3, the tuner circuit 2 selects the television broadcast signal of the channel based on the channel selection data input from the controller circuit 3. This selected television broadcast signal is transmitted to the VIP circuit 4. It is input to the character processor 9 via the video detection circuit 5. In this character processor 9, based on the reserved program selection data inputted from the controller circuit 3,
All pages of text information of the reserved teletext program are stored in the reserved program text information storage memory 9d, and the process proceeds to step S4. Note that this memory 9d can store text information of a plurality of programs (for example, 16 programs). This stored character information is rewritten every time the character information is updated.

In other words, text information is updated in real time, and the latest data is always stored.

In step S4, a delay (time wait) of a predetermined time (for example, about 5 minutes) is performed as necessary, and during this time, the latest data of the above character information is stored in the memory 9d, and the above step 1
Return to

The memory 9d for storing reserved program character information stores the latest character information about the desired teletext program reserved as described above at all times (even during standby operation), so that it can be used normally. Sometimes, at the same time as starting the display operation of the reserved teletext program, the memory 9d
The character information is read out, decoded by the CPU 9a, sent via the RGB processor 11 to the display means 12 such as a CRT, and displayed immediately (without any waiting time).

Note that the present invention is not limited to the above-mentioned embodiments. For example, the memories 9b and 9c may not be provided, and a portion of the memory 9d may be used as the memories 9b and 9C. Further, the operation of storing character information in the memory 9d may be performed at least during standby, and it goes without saying that the latest data may be stored during normal operation.

〔Effect of the invention〕

According to the receiving device according to the present invention, by constantly storing the latest character information in the reserved program character information storage memory, when displaying the character information of the desired program for which the reservation has been set, the latest character ↑n You can view the information without waiting time.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing a schematic configuration of a television receiver that is an embodiment of the receiving device according to the present invention, and FIG. 2 is a flowchart for explaining the operation of the embodiment device during standby. . 2...Tuner circuit 3...Controller 4...VIF circuit (intermediate frequency amplification circuit) 7... ...Video signal processing circuit 9...
...Character processor 9a .......c
pu (central processing unit) 9b...Memory (for each page of all programs) 9C...Memory (for all pages) 9d... Reserved program character information storage memory 11...ROB processor 12...Display means 13...Standby power supply circuit 14...
...Power supply circuit 16...Commander patent applicant Sony Corporation representative Patent attorney Koike Mimi Art supplies Eiji Sato Katsudou Explanation diagram 2

Claims (1)

[Scope of Claims] A receiving device that receives text information superimposed on a television signal and transmitted, comprising: a control means for setting a reservation for information regarding a desired text broadcast program; and a program set for reservation by the control means. 1. A receiving device comprising: storage means for always storing the latest data of character information; and power supply means for constantly supplying power to the control means and the storage means.