KR19990025613A - How to calibrate time information for televisions that can receive satellite broadcasting - Google Patents

Abstract

The present invention relates to a method of correcting time information of a television capable of receiving satellite broadcasting, and to processing time data included as additional information in a tuned channel on a screen, and to converting time data of a timer based on the time data. A tuner 116 dedicated for satellite broadcasting reception, audio / video processing means for reproducing voice / video of a satellite broadcast signal received by the tuner 116, and timer means for providing timely data so as to enable adjustment; A satellite television receiving television having 104a or 128, comprising: a first step in which time data TD1 for a current time transmitted in a broadcast signal of a tuned channel is decoded by a decoder 118; When the decoded time data TD1 is applied to the microcomputer 104, the second microcomputer 104 displays the current time of the OSD based on the corresponding time data TD1. When the microcomputer 104 compares the time data TD1 with the time data TD2 indicated by the timer 128 and the two time data do not coincide, the microcomputer 104 automatically times the time data TD2 of the timer. The third step of correcting the data TD1 and, when a time display erasing command is input from the remote controller, the microcomputer 104 controls the OSD processing unit 122 to display the OSD display of the time data T1 output on the screen. Characterized in that the fourth step to release.

Description

How to calibrate time information for televisions that can receive satellite broadcasting

The present invention relates to a method of correcting time information of a television capable of receiving satellite broadcasting, and more particularly, to output a time data included as additional information in a tuned channel on a screen, and based on the time data. The present invention relates to a time correction method of a television capable of receiving a satellite broadcast which can correct the time data of the TV.

On televisions that reproduce broadcast video / audio signals transmitted over-the-air or output video / audio signals of video tapes applied from video cassette recorders (VCRs), for example, the date and day of the day and / or time (hour / minute / second) Timer function is designed to display time. The result of the time (date and hour / minute / second) by such a timer is utilized as reservation recording information in the VCR signal-coupled to the television or displayed on the television CRT device to inform the viewer of the current time. It is used as information for.

Typically, the timer function is designed in the form of a soft timer in which a microcomputer as a control means performs a clocking operation by a program or in the form of a hardware timer for dividing a signal generated from a crystal oscillator in a frequency divider.

The timer function of such a television continuously displays the current time even when the power switch of the corresponding television or the power button of the remote control is turned off, but the main power applied to the television is cut off by, for example, a power failure. If the standby power is not applied, the timer's timekeeping function will not run normally.

If the timer included in the television is set abnormally and set differently from the current time due to the above reason, the reservation recording of the VCR is controlled based on the current time of the error timer or the current time is displayed on the CRT device. As a result, accurate time guidance or external control cannot be performed with accurate timing.

In addition, such a timer has a difficulty in recognizing the time difference of each country and the need to reset it when a reservation for recording of a foreign broadcast program that does not coincide with the time of its own country when receiving satellite broadcast occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances. A television capable of receiving a satellite broadcast which uses the time data TD1 of a tuned channel as time information and automatically corrects the time data TD2 of a timer based on this information. The purpose is to provide a method for correcting time information.

In order to achieve the above object, according to a preferred embodiment of the present invention, a dedicated tuner for receiving satellite broadcasts and audio / video processing means and time data for reproducing audio / video of a satellite broadcast signal received by the tuner. A satellite television receiving television provided with a timer means, comprising: a first step in which time data (TD1) for a current time transmitted in a broadcast signal of a tuned channel is decoded by a decoder; A second step in which the microcomputer displays an OSD on the basis of the time data TD1 when the data TD1 is applied to the microcomputer; the time when the microcomputer is timed by the time data TD1 and the timer; A third step of comparing the data TD2 and automatically correcting the time data TD2 of the timer with the time data TD1 if the two time data do not match. And a fourth step of, when the time display erasing command is input from the remote controller, the microcomputer releases the OSD display for the time data T1 output on the screen by controlling the OSD processing unit. A time information correction method of a television is provided.

According to the present invention having the above-described configuration, when the time data TD1 of the tuned channel is decoded by the decoder to output the current time on the screen and the current time is different from the time data TD2 indicated by the timer, The timer's time can be adjusted automatically.

1 is a view illustrating a satellite broadcasting system including a television capable of receiving satellite broadcasting to which the present invention is applied;

2 is a block diagram of a television capable of receiving satellite broadcasting according to the present invention;

3 is a flowchart illustrating a method of correcting time information of a television capable of receiving satellite broadcasting according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: program / data signal source, 12: transmitting earth station,

14: satellite, 16: television,

18: smart card, 20: resource / subscriber management system,

22: PSTN / PSDN, 102: remote control,

104: microcomputer, 116: second RF tuner,

118: decoder, 120: video conversion unit,

122: OSD processing unit, 128: timer.

1 is a schematic block diagram of a satellite broadcasting system including a television capable of receiving satellite broadcasting according to the present invention.

In the figure, reference numeral 10 denotes a program / data signal source that collects and edits a broadcast program and information data program applied to the above-mentioned broadcast broadcast in a predetermined broadcast order, and 12 denotes the program / data signal source 10. A transmitting earth station for transmitting the broadcast program and the information data program edited at the satellite 14 to the satellite 14 is shown.

Reference numeral 16 denotes a television which receives and reproduces a broadcast program and an information data program relayed through the satellite 14, and the television 16 receives a broadcast program and an information data program transmitted from the satellite 14. Parabolic antenna is installed in order to provide a satellite broadcast decoder to be described later.

Reference numeral 18 is detachably provided to the television 16, and the program reception permission is allowed for the information of the channel which is allowed to be reproduced only for a specific subscriber among the broadcast program and the information data program received by the television 16. The smart card is applied to the processing of the protocol and the calculation of the fee.

Further, reference numeral 20 denotes a resource / subscriber management system that is responsible for the transmission of broadcast programs and data programs required by a specific subscriber identified by the smart card 18, the calculation of a fee, and the management of a specific subscriber. Indicates.

Reference numeral 22 is provided between the television 16 and the resource / subscriber management system 20 to link the protocol related to a request for a program transmission service from the television 16 or the resource / subscriber management system 20. PSTN or PSDN as a public communication network or a dedicated communication network that is in charge of linking communication protocols for resource / subscriber management.

In addition, in FIG. 1, the smart card 18 is a broadcast program provided from the program / data signal source 10 in a state where channel descrambling permission information is distributed under the involvement of the resource / subscriber management system 20, in particular, commercially. When selecting a channel for a broadcast program or information data program, the usage information is updated, and the usage information is accessed from the resource / subscriber management system 20 via the PSTN / PSDN 22 and corresponds to the corresponding usage information. Update processing of the subscriber profile is performed.

In addition, for the smart card 18, when the subscriber usage reaches a certain level (for example, 90%), the television 16 transmits the PSTN / PSDN 22 to the resource / subscriber management system 20. The state is transmitted to extract the usage information of the smart card 18.

2 is a block diagram of a television capable of receiving satellite broadcasting according to the present invention shown in FIG.

In the television 16 shown in Fig. 2, reference numeral 102 denotes a remote control for remote control of the overall function of the television 16 having the satellite broadcasting reception function. And a mode setting function for setting a screen display erasing function of, for example, the time data TD1, which is provided as additional service information at the time of reception of a channel selection station of a satellite broadcasting program and a satellite broadcasting program.

104 is a microcomputer responsible for overall control of the television 16 capable of receiving satellite broadcast in response to a remote control signal transmitted from the remote controller 102, and the microcomputer 104 is included in a satellite broadcast program and transmitted. Based on the time data TD1 detected in the additional service information, the time of the soft timer 104a built in the microcomputer 104 or the timer described later is automatically adjusted, and the screen display erasing adjustment mode is controlled by the remote controller 102. If is set, it removes the current time from the screen.

104b denotes a data memory in which channel tuning data applied to a satellite broadcasting channel or an airwave broadcasting channel executed by the microcomputer 104 is stored.

106 denotes a first RF tuner which tunes a channel of an airwave broadcasting program from a broadcasting station according to the channel selection signal CH1 applied by the microcomputer 104 and outputs an IF converted voice IF signal and an image IF signal.

108 is a voice processing unit for reproducing a voice IF signal applied by the first RF tuner 106 and a voice signal of a satellite broadcast program, and 110 is a sound output unit for reproducing the voice signal reproduced by the voice processing unit 108. A voice output section for outputting playback on a device (speaker) is shown.

Reference numeral 112 denotes an image processor for reproducing the video IF signal applied by the first RF tuner 106 and reproducing the video signal of the satellite broadcast program, and 114 denotes a video signal reproduced by the video processor 112. An image output unit for outputting to a video output device (CRT device) for playback.

In addition, in FIG. 2, reference numeral 116 denotes a microcomputer (not shown) when a satellite broadcasting program reproduced from the program / data signal source 10 shown in FIG. 1 and transmitted through the satellite 14 is received through a parabolic antenna (not shown). A second RF tuner which tunes a channel for the satellite broadcast program based on the channel tuning signal CH2 applied in 104.

118 denotes a decoder for decoding processing of a satellite broadcast signal (ie, additional service information of a broadcast program or time data, etc.) provided from the second RF tuner 116, and the decoder 118 is preferably called ' It is configured similarly to 'set-top-box' and decodes the satellite broadcasting program received through the satellite (FIG. 1 to 14) to receive a video signal, an audio signal, and additional service information (especially, time data). Will print

120 denotes an image converter which converts the image signal decoded by the decoder 118 into an NTSC image signal (R / G / B) and applies the image signal to the image processor 112.

In addition, 122 is the image processing unit by generating an OSD signal for screen display the recording information contained in the function or mode, additional service information for the television 16 with the satellite broadcasting receiving function set by the remote control 102 An OSD processing unit to be applied to 112 is shown.

When the smart card 18 is mounted, the smart 124 performs smart calculation to perform channel descrambling or cost calculation or update processing for the smart card 18 based on the protocol recorded in the smart card 18. The card processing unit is shown.

126, the microcomputer 104 communicates with the resource / subscriber management system 20 via the PSTN / PSDN 22 by the protocol of the smart card 18 processed by the smart card processing unit 124. Represents the interface to interface with.

128 denotes a timer for providing time data applied to the control of the microcomputer 104 regarding the calculation of the viewing time of the corresponding television 16, and the like. If 104a) does not apply, it has a hardware configuration.

Next, the reception process of the satellite broadcast program by the television 16 of the above structure is demonstrated in detail.

First, a description will be given of the reproduction processing for the broadcast program of the channel when the channel of the conventional airwave broadcasting program is selected by the remote control 102. When the remote control signal is received from the remote control 102, the microcomputer 104 It is determined whether the remote control signal is a signal for setting a mode for receiving a satellite broadcast program.

As a result of the determination, if the remote control signal is not a mode setting signal for receiving a satellite broadcast program, the microcomputer 104 performs a process of reproducing a broadcast signal of an airwave channel.

That is, when the remote control signal for tuning the airwave channel is input from the remote controller 102, the microcomputer 104 reads the channel tuning voltage CH1 to be tuned from the data memory 104b to the first RF 106. The audio / video signal of the airwave channel tuned by the first RF tuner 106 and IF-converted is applied to the corresponding audio processing unit 108 and the image processing unit 112 and reproduced. Subsequently, the reproduced audio / video signal is transmitted to the speaker device and the CRT display device through the audio output unit 110 and the image output unit 114 to be reproduced and output.

On the other hand, in the case of satellite broadcasting, the broadcast program organized from the program / data signal source 10 is transmitted from the transmitting earth station 12 and transmitted from the transmitting earth station 12 toward the satellite 14, and at the satellite 14 The satellite broadcast program to be relayed is received at the parabolic antenna provided for the television 16. In this state, when the satellite broadcasting reception mode is set by the remote controller 102, the microcomputer 104 reads the preset voltage CH2 corresponding to the channel selected by the remote controller 102 from the data memory 104b. In addition to applying to the second RF tuner 116, the OSD processing unit 122 is controlled to generate an OSD signal corresponding to a channel number for tuning of the satellite broadcasting program to be applied to the image processing unit 112. do.

Accordingly, the second RF tuner 116 tunes a channel designated by the remote control signal among satellite broadcast signals received through a parabola antenna (not shown), and IF converts the satellite broadcast program of the channel to the decoder 118. It is applied to) side.

Then, the decoder 118 decodes the video signal Vbs and the audio signal Abs from the IF signal of the IF broadcast satellite program, and outputs the decoded audio signal Abs. The unit 120 converts the NTSC video signal (R / G / B signal) to the image processor 112 to reproduce the image.

Next, a time information correction method of a television capable of receiving satellite broadcast according to the present invention will be described in detail with reference to the flowchart shown in FIG.

First, when the viewer is in a state in which the satellite broadcasting reception mode is set using the remote controller 102 (step 201), the additional information time data TD1 included in the broadcast signal of the tuned channel is decoded by the decoder 118. Is decoded and applied to the microcomputer. As a result, the microcomputer 104 controls the OSD processing unit 122 so that the current time information obtained from the broadcast signal of the channel is displayed on the CRT based on the decoded time data TD1. Display the time (step 202).

Subsequently, the microcomputer 104 compares the time data TD1 of the additional information with the time data TD2 of the timer 128, and if the result of the comparison does not coincide with each other (NO in step 203), The timer 128 is automatically controlled to correct the time data TD2 of the timer 128 with the time data TD1 (step 204).

If the microcomputer 104 compares the time data TD1 of the additional information with the time data TD2 of the timer, and if the compared time information coincides with each other (YES in step 203), the time data of the timer ( Do not perform automatic calibration of TD2).

Then, the microcomputer 104 determines whether a time display erasing command is input from the remote controller 102 (YES in step 205), and when the time display erasing command is input, the microcomputer 104 controls the OSD processing unit 122 to the CRT. Time information corresponding to the output time data TD1 is erased (step 206).

If no time display erasing command is input (NO in step 205), time information corresponding to time data TD1 is continuously output on the CRT until a new channel tuning is made.

As described above, whenever the channel is tuned, the time data TD1 is displayed on the basis of the time data TD1 of the additional information included in the channel, and the time data of the timer is corrected.

As described above, according to the time information correction method of a television capable of receiving a satellite broadcast according to the present invention, it is possible to know time information accurately and conveniently while watching a television, and to display a timer due to time difference generated when receiving a broadcasting channel from another station. Since the influence of error is excluded, accurate time data of the country can be provided according to each broadcasting channel.

Claims (1)

A dedicated tuner 116 for receiving satellite broadcasts, audio / video processing means for reproducing voice / video of a satellite broadcast signal received by the tuner 116, and timer means 104a or 128 for providing time data. In the provided satellite television, A first step in which the time data TD1 for the current time transmitted in the broadcast signal of the tuned channel is decoded by the decoder 118; When the decoded time data TD1 is applied to the microcomputer 104, the microcomputer 104 displays the current time of the OSD on the basis of the corresponding time data TD1; The microcomputer 104 compares the time data TD1 with the time data TD2 timed by the timer 128, and automatically compares the time data TD2 of the timer with time data if both time data do not match. A third step of correcting with (TD1), and When the time display erasing command is input from the remote control, the microcomputer 104 controls the OSD processing unit 122 to release the OSD display for the time data (T1) output on the screen, characterized in that the satellite comprises a Method of correcting time information of a television capable of receiving a broadcast.