KR19990025622A - Time Compensation Method of TV with Satellite Broadcasting - Google Patents

Abstract

The present invention relates to a time correction method of a television capable of receiving satellite broadcasts, wherein a dedicated tuner 116 for receiving satellite broadcasts and an audio / video for reproducing voice / video of a satellite broadcast signal received by the tuner 116 are provided. A control method for a satellite television comprising an image processing means, wherein the data memory 104c when the main power is turned on while the main power is cut off and the time data TD2 of the timer 128 is cleared. The first step of tuning the previously stored satellite broadcast channel, the satellite broadcast signal of the tuned satellite broadcast channel is decoded by the decoder 118 so that the time data (TD1) of the additional information included in the satellite broadcast signal is microcomputered. A second step outputted to 104, a third step of the microcomputer 104 controlling the OSD processor 122 to output the CRT to check whether the timer 128 is time-corrected, and the OSD output In response, when the viewer manipulates the time correction key 102a, the OSD output is terminated, and at the same time, the time data TD2 of the timer 128 is automatically corrected based on the time data TD1. Characterized in that made.

Description

Time Compensation Method of TV with Satellite Broadcasting

The present invention relates to a time correction method of a television capable of receiving satellite broadcasting, and more particularly, to turn on the main power and simultaneously to store a satellite broadcasting channel stored in a data memory, and to be included in the tuning channel upon user's request. The present invention relates to a time correction method of a television capable of receiving a satellite broadcast that can correct a time of a built-in timer based on time data.

In general, a television that reproduces a broadcast video / audio signal transmitted over the air or outputs a video / audio signal of a video tape applied from a video cassette recorder (VCR), for example, has a date, day, and time of day (hour / minute). Timer function is designed. The result of the time (date and hour / minute / second) by such a timer may be utilized, for example, as reserved recording information in a VCR signal-coupled to a television or displayed on a television CRT device to inform the viewer of the current time. It is used as information for giving.

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 that divides an oscillated signal from a crystal-oscillator in a frequency divider. Even if the power switch of the television or the power button of the remote control is turned off, the current time is continuously displayed. However, if the main power applied to the television is cut off due to a power failure or the like, and the standby power is not applied, the timer clock function is normally executed. Will not be.

If the current time is different from the actual current time in the timer equipped on the television for the above reasons. If, for example, the reservation recording of the VCR is controlled or the current time is displayed on the CRT device based on the current time of the error timer, accurate time guidance or external control cannot be performed at the correct timing.

Therefore, with respect to the timer provided in the television, for example, when the power supply is made in a state where the main power is cut off due to a power failure or the like, the timer is cleared, so that the user has to adjust the timer.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and a timer built in on the basis of time data which is included in the selected channel and transmitted when the satellite broadcasting channel stored in the data memory is tuned at the same time as the main power is turned on. The purpose of the present invention is to provide a time correction method for a television which can receive satellite broadcasting so that the time can be corrected.

In order to achieve the above object, according to a preferred embodiment of the present invention, a satellite comprising a dedicated tuner for receiving satellite broadcasts and audio / video processing means for reproducing audio / video of a satellite broadcast signal received by the tuner. A control method of a broadcasting television, comprising: a first step of tuning a satellite broadcasting channel previously stored in the data memory when the main power is turned on while the main power is cut off and the time data of the timer is cleared; A second step in which a satellite broadcast signal of a tuned satellite broadcast channel is decoded by a decoder to output time data TD1 of additional information included in the satellite broadcast signal to the microcomputer; A third step in which the microcomputer controls the OSD processing unit and outputs it on the CRT; and the viewer corrects the time correction key in response to the OSD output. 2a), the OSD output is terminated and at the same time the satellite broadcasting reception is performed according to the fourth step of automatically correcting the time data TD2 of the timer 128 based on the time data TD1. Possible television time correction methods are provided.

According to the present invention configured as described above, when the main power source is turned on (ON), the satellite broadcasting channel previously stored in the data memory is tuned and the signal of the tuned channel is applied to the decoder to read the time data TD1. According to the user's request, the timer's time data is corrected based on the time data TD1.

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 time correction method of a television capable of receiving satellite broadcasting according to the present invention.

Explanation of symbols on the main parts of the drawings

10: program / data source, 12: transmitting earth station, 14: satellite, 16: television, 18: smart card, 20: resource / subscriber management system, 22: PSTN / PSDN, 102a: time correction key, 104: microcomputer, 104b: channel data storage, 104c: data memory, 116: second RF tuner, 118: decoder, 120: video converter, 122: OSD processing unit, 128: timer.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

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 receiving function. 102a) comprises a mode setting function for correcting the time data of the timer based on the time data TD1 provided as additional service information upon reception of the satellite broadcast program.

104 is a microcomputer in charge of the overall control of the television 16 capable of receiving the satellite broadcast in response to the remote control signal transmitted from the remote controller 102, and the microcomputer 104 is operated by power failure or main power off. Therefore, when the timer 128 is cleared, the satellite broadcasting channel stored in the data memory can be tuned at the time when the main power is turned on. Also, based on the time data TD1 detected in the additional service information included in the satellite broadcasting program, the time of the soft timer 104a built in the microcomputer 104 or the timer described later is displayed. Perform the correction to the input.

104b represents a channel data storage unit storing channel tuning data applied to the satellite broadcasting channel or the airwave broadcasting channel selected by the microcomputer 104, and 104c indicates that the microcomputer 104 is powered on. Represents a data memory in which an arbitrary satellite broadcasting channel, which functions as a last memory, can be tuned under the control of the satellite broadcasting channel.

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 indicates a timer that provides time data applied to the control of the microcomputer 104 regarding the calculation of the viewing time of the corresponding television 16, etc., and the timer 128 indicates the time due to the power failure or the interruption of the main power supply. The data is cleared and time correction is performed under the control of the microcomputer.

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

First, when the power failure or the power plug is disconnected from the outlet and the main power applied to the television is cut off and the standby power is not applied to the timer 128 (step 200), the timer 128 is cleared. (Step 201).

Subsequently, when the power plug is plugged into an outlet or the power failure is terminated by the viewer, the main power of the television is turned on (step 202), and the microcomputer 104 stores the satellite broadcasting channel previously stored in the data memory 104c. Bar data is read and applied to the second RF tuner 116 (step 203). The tuner 116 tunes the desired satellite broadcast channel based on the channel data.

The satellite broadcast signal of the satellite broadcast channel tuned by the tuner 116 is applied to the decoder 118. The decoder 118 decodes the video signal Vbs and the audio signal Abs from the satellite broadcast signal. And outputs to the image converter 120 and the audio output unit 108, and decodes the time data TD1 as additional information included in the satellite broadcast signal and outputs it to the microcomputer 104 (step). 204).

Subsequently, after receiving the time data TD1, the microcomputer 104 controls the OSD processing unit 122 to automatically adjust the OSD character (eg, time of the timer) to check whether the timer is time-corrected by the user. Are you sure?) Is output via the CRT (step 205).

Then, the microcomputer 104 determines whether a time correction key signal is input from the remote controller 102 (step 206). As a result, the microcomputer 104 views the OSD text for confirming whether the OSD has been processed. When the viewer operates the time correction key 102a of the remote controller 102 to automatically correct the time of the timer 128 (YES in step 206), the time correction signal from the remote controller 102 is received by the microcomputer ( 104. The microcomputer 104 corrects the time data of the timer 128 based on the time data TD1 of the additional information decoded in the step 204, and simultaneously controls the OSD processor 122. To release the OSD text displayed on the CRT to confirm time compensation (step 207).

If the time correction key 102a of the remote controller 102 is not operated by the viewer in step 206 (NO in step 206), the microcomputer 104 controls the OSD processing unit 122 after a predetermined time elapses. To release the OSD text displayed on the CRT to confirm time compensation (step 208).

As described above, according to the time correction method of a television capable of receiving satellite broadcasting according to the present invention, since the current time of the timer can be easily adjusted by a shortcut key input based on the time data included in the tuned channel, The hassle for adjustment is eliminated and the influence on the viewing of the broadcast program by the timer timekeeping error is eliminated.

Claims (1)

In a control method for a satellite television comprising a tuner 116 dedicated for receiving a satellite broadcast and voice / image processing means for reproducing voice / video of a satellite broadcast signal received by the tuner 116, In the state where the main power is cut off and the time data TD2 of the timer 128 is cleared, A first step of tuning the satellite broadcasting channel previously stored in the data memory 104c when the main power is turned on; A second step in which the satellite broadcast signal of the tuned satellite broadcast channel is decoded by the decoder 118 to output time data TD1 of additional information included in the satellite broadcast signal to the microcomputer 104; A third step in which the microcomputer 104 controls the OSD processing unit 122 to output the time on the CRT to check whether the timer 128 is time-corrected; When the viewer manipulates the time correction key 102a in response to the OSD output, the OSD output is terminated and the time data TD2 of the timer 128 is automatically corrected based on the time data TD1. A time correction method of a television capable of receiving satellite broadcasts, characterized in that the fourth step.