JPH104527A - Satellite broadcast receiver - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To select two programs in a digital broadcast receiving apparatus in which a plurality of programs are multiplexed on one transmission channel and transmitted, and a first selected program and a second selected program are selected. The purpose of this is to display a warning message when the transmission channels are different. SOLUTION: A number memory for storing a program number being selected and received is provided, and when a second program is selected, a transmission channel of the first program is determined from a program number already being received and transmission information, From the second selected program number and the transmission information, a second
The transmission channel of the first program is determined, and the transmission channel of the first program is compared with the transmission channel of the second program. If the transmission channels are different, a warning message is created and displayed. Can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving apparatus for receiving a digital satellite broadcast or the like which digitizes and multiplexes a plurality of images and broadcasts them.

[0002]

2. Description of the Related Art In conventional satellite broadcasting, a plurality of video and audio signals are digitally encoded, a plurality of programs are multiplexed on one transmission channel, and each transmission channel overlaps frequency bands with horizontal and vertical polarizations to effectively use radio waves. It is being used. Also, the program information for displaying the program guide, the correspondence information between each program and the transmission channel, and the transmission information including the transmission data of each transmission channel are simultaneously transmitted on each channel.

FIG. 3 shows a receiving apparatus. 5, reference numeral 50 denotes a receiving antenna; 51, a tuner for selecting a specific transmission channel; 52, a demodulation unit for performing digital demodulation and correction;
3 is a separation unit for selecting video / audio information constituting a specific program from the multiplexed information, 54 is a RAM, 55 is a video / audio decoding unit, 56 is an OSD for displaying a program table and the like.
(On-screen display) unit, 57 is a synthesizing unit for superimposing or switching display of the decoded video and the OSD output, 58 is an instruction unit, and 59 is a control unit for controlling the entire receiving device.

[0004] The program information and the transmission information are received simultaneously with the video and audio information and stored in the RAM 54. When the user issues a program table instruction from the instruction unit 58, the control unit 59
The program information is read from 54 and transferred to the OSD unit 56 for display. When a user instructs to view a specific program, the control unit 59 determines a transmission channel from the transmission information in the RAM 54, and instructs the tuner 51 to receive the specific program so that the user can view the specific program. Switching between reception of horizontal / vertical polarization is performed by the reception antenna by changing the DC voltage applied to the reception IF line.

[0005] Further, an IF signal from the receiving antenna 50 can be distributed and received by a plurality of receiving devices. Furthermore, it is also possible to output the output of the demodulation unit 52 to the outside and use it for recording or the like.

[0006]

In the conventional receiving apparatus, when one receiving apparatus attempts to select different programs for external recording and viewing program, two kinds of program selection are performed. If the second selected program is sent on a different transmission channel, the receiving channel is switched by the second program selecting process, and the video / audio information being received is suddenly interrupted by the first selecting operation.

In the case where the IF signal from the receiving antenna 50 is distributed to a plurality of receiving devices and used, the slave receiving device instructs to receive a program transmitted with a polarization different from that of the main receiving device. Cannot be received without any response.

[0008]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention relates to a method for receiving a plurality of programs by one receiving apparatus, wherein a transmission channel of a previously selected program and a program of a later selected program are selected. And a message notifying that reception of the previously selected program is not possible if the transmission channels are different is displayed.

[0009] Thus, it is impossible to simultaneously receive the program being received first and the program selected later, and it is possible to select either of them, and it is possible to prevent the previously selected program from being suddenly interrupted. .

[0010] Further, during reception of the previously selected program, the second
When a program table instruction for selecting a program is given, a program table is displayed so that a program received on the same transmission channel as a program already received and a program received on a different channel can be identified. It is configured to be changed and displayed.

Thus, if there is a program that is already being received, it is possible to recognize at the program selection stage whether or not the program to be selected next can be received simultaneously, and the previously selected program is suddenly interrupted due to undetermined reception. Can be prevented.

[0012] Further, in the slave receiving apparatus for distributing in the IF band, the polarization type of the transmission channel of the previously selected program is compared with the polarization type of the transmission channel of the program selected later. If they are different, a message notifying that the program selected later cannot be received is displayed.

[0013] Thus, when the main receiving apparatus is receiving, it is possible to notify that simultaneous reception of the program selected later is not possible, and to prevent anxiety due to no response caused by undetermined reception. be able to.

[0014] Also, when a program table is instructed to select a program by a duplicate receiver while a program is being received by the main receiving apparatus, the program is received with the same polarization type as the already received program. The program table is changed and displayed so as to be able to distinguish between a program received with a different polarization and a program received with a different polarization.

[0015] With this arrangement, when the main receiving apparatus is receiving and selecting reception by the subordinate receiving apparatus, receivable programs and unreceivable programs can be distinguished from each other. Feeling can be prevented.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a digital broadcast receiving apparatus in which a plurality of programs are multiplexed on one transmission channel and transmitted, after a first program selection instruction is issued, When a program selection instruction is issued, it is determined from the received program information and the transmission information of each channel that the first received program and the second received program are being broadcast on the same channel, If this is the case, a warning message is displayed. When the second program is selected, the channel for transmitting the first selected and received program and the newly added channel are selected before the channel selection processing is performed. It has the function of determining whether the channels for transmitting the program are the same, and displaying a warning message if they are different.

According to a second aspect of the present invention, there is provided a program number storage memory for storing a first selected program number and a second selected number, program information for program guide, transmission channel specifications and programs. A memory for storing transmission information indicating a correspondence between a number and a transmission channel, a control unit for performing reception control, and an OSD
(On-screen display) unit, and when either the first or second program is already selected and the other program number is selected in the receiving state, the control unit operates the program number storage memory. A channel for transmitting two programs is determined from the program number stored in the program, the newly selected program number, and the information stored in the memory. The number is stored in the program number storage memory and reception processing is performed. If the channel is different in the determination, a warning message indicating that the program already being received cannot be received is output to the OSD.
To the output.

According to a third aspect of the present invention, the transmission 1
In a digital broadcast receiving apparatus in which a plurality of programs are multiplexed and transmitted on a channel, when a second program search instruction is given after the first program is selectively received, program information already received, transmission information of each channel, and From which the program multiplexed on the channel being received is determined, and the program broadcast on the channel being received and the program broadcast on other channels are displayed in an identifiable form when the program guide is displayed When a program table instruction for selecting the second program is given, each program broadcast from the program information and the transmission information transmits to the channel for transmitting the first selectively received program. It has the effect of determining whether the channels are the same, and displaying the program broadcast on the channel being received and the program broadcast on another channel in a form that can be identified when the program guide is displayed.

According to a fourth aspect of the present invention, there is provided a channel number storage memory for storing a channel number being received,
It comprises a memory for storing program information for program guide, transmission information indicating transmission channel specifications and correspondence between program numbers and transmission channels, a control unit for performing reception control, and an OSD (on-screen display) unit. If a program number search instruction is given when the first program is already selected and in the receiving state, the control unit stores the program information in the channel number storage memory when displaying the program information as a program table on the OSD unit. It is determined whether the program in the program information is transmitted on the stored channel from the numbers stored in the memory and the information stored in the memory, and the coloring is changed or the display position is changed on the same channel and a different channel. It has the function of changing the display and displaying the program guide on the OSD section.

The invention according to claim 5 of the present invention provides the transmission 1
Multiple programs are multiplexed on a channel, and horizontal /
In a receiving apparatus for receiving a digital broadcast broadcast by a vertically polarized wave and distributing it in an IF band, when a program selection instruction is given, the second receiving apparatus determines the type of polarization determined from the detection of the DC voltage of the IF signal. The selected program information is compared with the polarization type of the selected program determined from the transmission information of each channel, and if the polarization is different, a warning message is displayed. Before doing
It has the function of determining whether the polarization type determined from the DC voltage detection of the F signal is the same as the polarization type of the channel transmitting the newly additionally selected program, and displaying a warning message if different.

According to a sixth aspect of the present invention, there is provided a voltage detecting section for detecting a DC voltage of an IF signal line, a program information for program guide, transmission channel specifications, and correspondence between a program number and a transmission channel. And a control unit for performing reception control, and an OSD (on-screen display) unit. When the program selection instruction is given, the control unit determines a voltage from the voltage detection unit. Compare the polarization type of the currently transmitting distribution determined from the signal, the polarization type of the channel transmitting the selected program determined from the newly selected program number and the transmission information stored in the memory, If the polarizations are the same, the reception processing of the newly selected program is performed, and if the polarization types are different in the comparison, a warning message indicating that reception is impossible is output to the OSD.

According to a seventh aspect of the present invention, the transmission 1
Multiple programs are multiplexed on a channel, and horizontal /
In a receiving apparatus for receiving a digital broadcast broadcast in the vertical polarization and distributing it in the IF band, when a program search instruction is given, the second receiving apparatus uses the same polarization as the polarization determined from the DC voltage detection of the IF signal. The program received by the wave is determined to be the program information already received and the transmission information of each channel, and at the time of displaying the program guide, the program broadcasted by the first receiving apparatus in the polarization received and the other polarization And a program broadcasted by the user. When a program table instruction for selecting a program is given, the polarization determined from the detection of the DC voltage of the IF signal, the program information and the transmission information are displayed. Determines whether the polarization of the channel transmitting each program is the same, and displays the program broadcast in the currently received polarization and the program broadcast in the other polarization in a form that can be distinguished when the program guide is displayed It has the effect of doing.

According to an eighth aspect of the present invention, there is provided a voltage detecting section for detecting a DC voltage of an IF signal line, and a program information for program guide, transmission channel specifications, and correspondence between a program number and a transmission channel. And a control unit for performing reception control, and an OSD (On Screen Display) unit. When a program search instruction is issued, the control unit converts the program information into a program table. OSD
When displaying on the unit, the program in the program information is determined by the determined reception distribution from the polarization type currently being received and distributed determined from the voltage determination signal from the voltage detection unit and the transmission information stored in the memory. It is determined whether or not transmission is performed with the same polarization as the polarization type in, and the coloring or the display position is changed with the same polarization and a different polarization, and the program guide is displayed on the OSD section. Have.

An embodiment of the present invention will be described below with reference to FIGS. (Embodiment 1) FIG. 1 shows a block diagram of a receiving apparatus. In FIG. 1, 1 is a receiving antenna, 2 is a tuner for selecting a specific transmission channel, 3 is a demodulation unit for performing digital demodulation and apologistic correction. Reference numeral 4 denotes a separation unit for selecting video / audio information constituting a specific program from the multiplexed information.
Is a RAM, 6 is a video / audio decoding unit, 7 is an OSD (on-screen display) for displaying a program table and the like.
A synthesizing unit 8 for superimposing or switching and displaying the decoded video and the OSD output; 9 an instruction unit; 10 a control unit for controlling the entire receiving apparatus; 11 a number for storing a program number being selected and received Memory, 12 is a video / audio output terminal, 13
Is a data output terminal for outputting the second selected program.

The program information and the transmission information are received simultaneously with the video and audio information and are stored in the RAM 5. When the user gives an instruction of the program guide from the instruction section 9, the control section 10 reads out the program information from the RAM 5, transfers it to the OSD section 7, and displays it. When a user instructs viewing of a specific program, the control unit 10 sets R
By judging the transmission channel from the transmission information of AM5 and instructing the tuner 2 to receive, a specific program can be viewed. At this time, the control unit 10 stores the selected number in the number memory 11.

In this state, when a second program selection instruction to be output to the data output terminal is issued from the instruction unit 9, the control unit 10
Reads out the program number stored in the number memory 11 and determines and compares the channel being received from the transmission information in the RAM 5 with the transmission channel of the second selected program. If the comparison results are equal, the control unit 10 instructs the separation unit 4 to receive the second program.

If the result of the comparison is different, for example, a warning message such as "The program being viewed cannot be received" is output to the OSD section 7, and the synthesized signal is synthesized by the synthesizing section 8 and displayed. When a continuation instruction is given, the reception frequency of the second program is read from the transmission information in the RAM 5 and set in the tuner 2 to switch the reception channel.

Although the program number is stored in the number memory, the number of the transmission channel may be stored. Further, although the second program is output from the data output terminal 13, a configuration may be adopted in which two decoding units are provided.

(Embodiment 2) FIG. 1 shows a block diagram of a receiving apparatus. In FIG. 1, reference numeral 11 denotes a number memory for storing the number of a channel being received.

The program information and the transmission information are received simultaneously with the video and audio information and are stored in the RAM 5. In the first program selection, when the user gives an instruction of the program table from the instruction unit 9,
The control section 10 reads out the program information from the RAM 5 and transfers it to the OSD section 7 for display. When a user instructs to view a specific program, the control unit 10 determines a transmission channel from the transmission information in the RAM 5 and instructs the tuner 2 to receive the specific program so as to view the specific program. At this time, the control unit 10 stores the number of the selected channel in the number memory 11. In this state, the second output from the instruction unit 9 to the data output terminal is performed.
Is instructed to select a program, the control unit 10 reads out the channel numbers stored in the number memory 11 and determines the transmission channels of all the programs being broadcast from the transmission information in the RAM 5 and the channel numbers. Compare the read channel numbers. The control unit 10 separates a program whose comparison result is identical from a different program, creates a program table in the OSD unit 7 in a form in which coloring is changed, and synthesizes or switches and displays the program table.

Although the coloring is changed when the transmission channel is different, it is also possible to divide the display position or change the brightness between programs different from the program having the same transmission channel. Further, although the channel number is stored in the number memory, it is also possible to store the program number, determine the channel from the transmission information, and use it.

(Embodiment 3) FIG. 2 shows a block diagram of a receiving apparatus. In FIG. 2, 15 is a receiving antenna, 16 is a distributor for distributing IF signals to a plurality of receiving apparatuses, and 20 is a divider. A main receiver, 30 a slave receiver, 31 a voltage detector for detecting the DC voltage of the IF line,
32 is a tuner for selecting a specific transmission channel, 33 is a demodulator for digital demodulation and correction, 34 is a separator for selecting video and audio information constituting a specific program from multiplexed information, 35 is a RAM, 36 Is a video / audio decoding unit,
Reference numeral 37 denotes an OSD (on-screen display) unit for displaying a program table or the like; 38, a synthesizing unit for displaying a decoded video and an OSD output in a superimposed manner or in a switched manner;
Is an instruction unit, 40 is a control unit that controls the entire receiving apparatus, 41 is
Is a video / audio output terminal. Horizontal of receiving antenna 15 /
The vertical polarization switching is performed by the receiving device 20. The program information and the transmission information are received at the same time as the video and audio information and are stored in the RAM 35.

When the instruction of the received program number is given from the instruction unit 39 while the receiving device 20 is receiving the broadcast, the control unit 40
Determines the type of polarization received by the receiving device 20 based on the detection signal from the voltage detecting unit 31. Further, the RAM 35
From the transmission information, the polarization type of the channel through which the reception-instructed program is transmitted is compared with the polarization type determined by the signal from the voltage detection unit. If the comparison results match, the transmission channel frequency of the selected program number is read from the transmission information, set in the tuner 32 and received. If the comparison results are different, for example, a message “The specified program cannot be received. Please change the reception of the main receiver” is created and transferred to the OSD unit 37.
The combining unit 38 combines the image signal with the video signal and outputs the combined signal.

(Embodiment 4) FIG. 2 shows a block configuration of a receiving apparatus. Horizontal of receiving antenna 15 /
The vertical polarization switching is performed by the receiving device 20. The program information and the transmission information are received at the same time as the video and audio information and are stored in the RAM 35.

When a program table for selecting a program is instructed from the instruction section 39 while the receiving apparatus 20 is receiving a broadcast, the control section 40 receives the received signal from the voltage detecting section 31 so that the receiving apparatus 20 receives the program. The type of polarization is determined. Further, the polarization types of all the programs being broadcast are determined from the transmission information and the program information of the RAM 35, and the respective broadcast programs are compared with the polarization types determined by the signals from the voltage detector 31. The control unit 10 separates a program whose comparison result is identical from a different program, creates a program table in the OSD unit 7 in a form in which coloring is changed, and synthesizes or switches and displays the program table.

Although the coloring is changed when the polarization type is different, it is also possible to divide the display position between programs having different polarization types and different programs, or to change the luminance.

[0037]

As described above, according to the present invention, when a plurality of programs are selected by one tuner, a warning message is issued even if the transmission channels of the second and subsequent programs and the first selected program are different. Since the display is displayed, it is possible to prevent an interruption of the first selected received program due to the undetermined channel selection.

When a plurality of programs are selected by one tuner, when the first program is being selected and received, when a program table instruction for selecting the second and subsequent programs is given, the program is selected first. The receivable programs can be notified in advance by displaying the program transmitted on the same channel as the program transmission channel and the program transmitted on a different channel in a identifiable program guide form, so that the first selection can be made by an undetermined channel selection. This has the effect of preventing the received program from being interrupted.

In a device for distributing and receiving an IF signal, when a program is selected, the type of polarization received by the main receiving device is detected, and a warning message is displayed even if the type of polarization of the selected program is different. Is displayed, the effect of being able to be notified in advance that the reception will be disabled due to undetermined channel selection can be obtained.

Further, in a device for distributing and receiving an IF signal, when a program table instruction for selecting a program is given, the type of polarization received by the main receiving device is detected,
A program sent with the same polarization type as the detected polarization type;
Receivable programs can be notified in advance by displaying the programs transmitted in different polarization types in a identifiable program guide form, and it can be notified in advance that the reception will be disabled due to undetermined channel selection. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram of a receiving apparatus according to an embodiment of the present invention;

FIG. 2 is a block diagram of a receiving apparatus according to an embodiment of the present invention;

FIG. 3 is a block diagram of a receiving apparatus according to a conventional mode.

[Explanation of symbols]

 1, 15, 50 Receiving antenna 2, 32, 51 Tuner 3, 33, 52 Demodulation unit 4, 34, 53 Separation unit 5, 35, 54 RAM 6, 36, 55 Decoding unit 7, 37, 56 OSD unit 8, 38 , 57 synthesizing section 9, 39, 58 indicating section 10, 40, 59 control section 11 number memory 12, 41 video / audio output 13 data output terminal 16 distributor 20, 30 receiving device 31 voltage detecting section

Claims (8)

[Claims] In a digital broadcast receiving apparatus in which a plurality of programs are multiplexed and transmitted on one transmission channel, when a first program is selected and then a second program is selected, the received program is received. From the program information and the transmission information of each channel, it is determined whether the received first program and the second program are broadcast on the same channel, and if different channels, a warning message is displayed on the screen. Satellite broadcasting receiver to be displayed on the screen. 2. A program number storage unit for storing a first selected program number and a second selected program number, and transmission indicating program information for program guide, transmission channel specifications, and correspondence between the program number and the transmission channel. A memory for storing information, a control unit for performing reception control, and an OSD (on-screen display)
When either of the first or second program is already selected and in the receiving state and the other program number is selected, the control unit controls the program number stored in the program number storage unit and the program number. From the newly selected program number and the information stored in the program number storage unit, a channel on which two programs are transmitted is determined. If the two channels are the same channel, the newly selected program number is stored in the program number storage. 2. The satellite broadcast receiving apparatus according to claim 1, wherein the satellite broadcast receiving apparatus performs a receiving process by storing the received program in a unit and, if the channel is different in the determination, a warning message indicating that a program being received cannot be received. 3. A digital broadcast receiving apparatus in which a plurality of programs are multiplexed on one transmission channel and transmitted, when a search instruction for a second program is given after the first program is selected and received, the reception is already performed. From the program information of the first program and the transmission information of each channel, the received first program
Satellite broadcast reception which determines a program multiplexed on a channel among the programs in the program, and displays a program broadcast on the channel being received and a program broadcast on another channel in a distinguishable form when a program guide is displayed. apparatus. 4. A channel number storage memory for storing a channel number being received, a memory for storing program information for program guide, transmission channel specifications and transmission information indicating correspondence between the program number and the transmission channel, A control unit for performing control, and an OSD (on-screen display) unit,
If a program number search instruction is issued when the first program is already selected and in the receiving state, the control unit stores the program information in the OSD unit as a program table in the channel number storage memory. From the number and the information stored in the memory, it is determined whether the program in the program information is transmitted on the stored channel, and the coloring or the display position is changed on the same channel and a different channel. The satellite broadcast receiving apparatus according to claim 3, wherein a program guide is displayed on the OSD unit. 5. A plurality of programs are multiplexed on one transmission channel,
In a receiving apparatus for receiving digital broadcasting broadcasted with horizontal / vertically polarized waves in channel units and distributing the signals in an IF band,
Of the receiving device receives the D signal of the IF signal when the program selection instruction is issued.
A satellite broadcast that compares a polarization type determined from C voltage detection with a polarization type of a selected program determined from received program information and transmission information of each channel, and displays a warning message if the polarization is different. Receiver. 6. A voltage detecting unit for detecting a DC voltage of an IF signal line, a memory for storing program information for program guide, transmission channel specifications and transmission information indicating correspondence between program numbers and transmission channels, A control unit for performing control, and an OSD
(On-screen display) unit, wherein when the program selection instruction is given, the control unit determines the type of polarization currently being received and distributed based on the voltage determination signal from the voltage detection unit, and the newly selected program number. And the polarization type of the channel transmitting the selected program determined from the transmission information stored in the memory, and if the polarization is the same, the reception processing of the newly selected program is performed. 6. The satellite broadcast receiving apparatus according to claim 5, wherein if the type is different, a warning message indicating that reception is impossible is output to the OSD. 7. A plurality of programs are multiplexed on one transmission channel,
In a receiving apparatus for receiving digital broadcasting broadcasted with horizontal / vertically polarized waves in channel units and distributing the signals in an IF band,
Receiving a program search instruction, the D
It is determined whether a program received with the same polarization as the polarization determined from the C voltage detection is the already received program information and the transmission information of each channel. A satellite broadcast receiving apparatus for displaying a program broadcast in a polarized wave and a program broadcast in another polarized wave in an identifiable form. 8. A voltage detecting unit for detecting a DC voltage of an IF signal line, a memory for storing program information for program guide, transmission information indicating transmission channel specifications and correspondence between program numbers and transmission channels, and a reception unit. A control unit for performing control, and an OSD
(On-screen display) unit, and when a program search instruction is issued, the control unit, when displaying program information as a program guide on the OSD unit, determines the current reception distribution determined from the voltage determination signal from the voltage detection unit. From the polarization type in and the transmission information stored in the memory, determine whether the program in the program information is transmitted with the same polarization as the determined polarization type in reception distribution, 8. The satellite broadcast receiving apparatus according to claim 7, wherein the coloring is changed or the display position is changed with the same polarization and different polarization, and the program guide is displayed on the OSD unit.