JP2000013698A - Digital broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital broadcasting receiver which acquires detailed program information without interrupting a program that is currently viewed. SOLUTION: This digital broadcasting receiver receives digital broadcasting in which detailed program information is transmitted in at least one frequency band among plural frequency bands that belong to a horizontally polarized wave and also detailed program information is transmitted in at least one frequency band among plural frequency bands that belong to a vertically polarized wave. In such a case, it is provided with a tuning circuit 3 which respectively and simultaneously tunes in to both a frequency band corresponding to a channel designated by a user and a frequency band which is for acquiring the detailed program information to a receiving signal of a polarized wave in which program presentation information of a channel designated by the user between the horizontally and the vertically polarized wave.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiver.

[0002]

2. Description of the Related Art In CS digital broadcasting, guide information (program information) on a program is sent in addition to the original program contents. The program information includes a channel for each program, broadcast time, information indicating its genre, and the like. A digital television broadcast receiver capable of receiving digital satellite broadcasting has a function of displaying a program guide screen (program guide table) based on program guide information.

In general, in digital television broadcasting, detailed program information is multiplexed and transmitted only in a specific frequency band, and only a limited range of program information is transmitted in other frequency bands. .

[0004] For example, in PerfecTV, the program information transmits information on a program currently being broadcast and a program to be broadcast next.
The pf-EIT is transmitted separately from the s-EIT that transmits information on all programs. In addition, PerfecTV has a special channel called the Promo Channel to send program information. In this promo channel, program information that is wider in time than program information transmitted in another channel is transmitted, and detailed information that is not transmitted in another channel is transmitted.

[0005] That is, a transponder that does not include a promo channel transmits program information for six hours, while a transponder that includes a promo channel transmits program information for up to 21 days. Also, from the transponder containing the promo channel,
Detailed information indicating the detailed contents of the program is transmitted for three days.
From transponders that do not include a promo channel,
Such detailed information is not transmitted.

Therefore, in order to display detailed information or to display a program guide for a program after six hours, a transponder including a promo channel must be selected.

When a transponder that does not include a promo channel is selected, detailed information is displayed,
To display a program guide for a program after six hours, it is necessary to switch the transponder so as to select a transponder including a promo channel. Then, there is a problem that the program currently being viewed is interrupted.

In addition, since the retransmission cycle of program information sent from a transponder that does not include a promo channel is relatively long, there is a problem that it takes time from when an acquisition request is made to when it is actually acquired and displayed.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a digital broadcast receiver capable of acquiring detailed program information without interrupting a currently viewed program.

[0010]

A first digital broadcast receiver according to the present invention transmits detailed program information in at least one frequency band of a plurality of frequency bands belonging to horizontal polarization, and simultaneously transmits vertical program information. In a digital broadcast receiver for receiving a digital broadcast in which detailed program information is transmitted in at least one of a plurality of frequency bands belonging to a polarization, a horizontal polarization and a vertical polarization are designated by a user. For the reception signal of the polarization including the program presentation information of the channel, the frequency band corresponding to the channel specified by the user and the frequency band for obtaining the detailed program information And a tuning circuit for performing tuning at the same time.

The second digital broadcast receiver according to the present invention transmits detailed program information in at least one frequency band among a plurality of frequency bands belonging to horizontal polarization, and transmits a plurality of program information belonging to vertical polarization. In a digital broadcast receiver for receiving a digital broadcast in which detailed program information is transmitted in at least one frequency band of a frequency band, program presentation of a channel designated by a user among horizontal polarization and vertical polarization. Both the frequency band for program presentation corresponding to the channel specified by the user and the frequency band for detailed program information acquisition for acquiring detailed program information for the received polarization signal containing information Tuning circuit that tunes each program simultaneously, and program presentation obtained by the tuning circuit At the same time to get the video and audio information from the digital data, characterized in that it comprises a DEMUX circuit to obtain detailed program information from the obtained detailed program information acquiring digital data by tuning circuit.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, detailed program information is transmitted in one of a plurality of frequency bands belonging to horizontal polarization, and one of a plurality of frequency bands belonging to vertical polarization. Detailed program information is transmitted in one frequency band.

FIG. 1 shows the configuration of a digital broadcast receiver.

The CS antenna 1 is connected to a CS antenna terminal 2 via an antenna cable. The tuner circuit 3 responds to an antenna input for a polarization including program presentation information of a channel designated by the user, out of the horizontal polarization and the vertical polarization, corresponding to the channel designated by the user. Tuning is performed simultaneously on both the program presentation frequency band and the detailed program information acquisition frequency band for acquiring detailed program information.

For example, if the polarization including the program presentation information of the channel specified by the user is a horizontal polarization, tuning for the program presentation frequency band and a plurality of frequency bands belonging to the horizontal polarization are performed. The tuning is performed on the frequency band in which the detailed program information is transmitted.

If the polarization containing the program presentation information of the channel specified by the user is a vertical polarization, tuning for the program presentation frequency band and, among a plurality of frequency bands belonging to the vertical polarization, Tuning is performed on the frequency band in which the detailed program information is transmitted.

The tuner circuit 3 performs QPSK demodulation processing, error correction processing, and the like on each piece of data obtained by tuning, and outputs a transport packet (TS packet). That is, the tuner circuit 3 outputs the program presentation TS packet and the detailed program information acquisition TS packet.

These TS packets are DEMUX-I
Sent to C5. From the program presentation TS packet, acquisition of video / audio elementary streams (ES) and acquisition of current ES information are performed. If necessary, the descrambling process by the descrambling IC 4 is performed on the ES. In this descrambling process, a descrambling key stored in the IC card 6 is used.

The video and audio elementary streams are decoded by the AV processing circuit 8 and the like.
It is sent to the V output terminal 9. The data is sent to the data output terminal 7.

From the detailed program information acquisition TS packet,
Broad and detailed program information is obtained. The acquired program information is sent to the system controller 14 and stored in the memory 10.

An instruction from the user is input to the system controller 14 via the remote controller 12 and the remote control light receiving unit 13. When displaying a program guide screen or the like based on an instruction from the user, the system controller 14 sends information necessary for the display from the information stored in the memory 10 to the OSD display circuit 11. The OSD display circuit 11 generates display data for displaying a program guide screen and the like, and sends the display data to the AV processing circuit 8. The program guide screen and the like are displayed on-screen on a screen on which a program is presented, for example.

The power supply to each part in the digital broadcast receiver is
It is supplied by the power supply circuit 16.

In the above embodiment, acquisition of the program presentation TS packet and acquisition of the detailed program information acquisition TS bucket can be performed at the same time. The original program is not interrupted. Further, when detailed program information is required, it is not necessary to obtain detailed program information again, so that a program guide screen or the like can be quickly displayed.

[0025]

According to the present invention, it is possible to acquire detailed program information without interrupting the currently viewed program.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a digital broadcast receiver.

[Explanation of symbols]

 Reference Signs List 1 CS antenna 3 Tuner circuit 5 DEMUX-IC 8 AV processing circuit 9 AV output terminal 10 Memory 11 OSD display circuit 14 System controller

Claims (2)

[Claims] 1. Detailed program information is transmitted in at least one of a plurality of frequency bands belonging to horizontal polarization, and at least one of a plurality of frequency bands belonging to vertical polarization is transmitted. In a digital broadcast receiver for receiving digital broadcasting in which detailed program information is transmitted, reception of a polarized wave including program presentation information of a channel designated by a user among horizontal polarized waves and vertical polarized waves It is characterized by having a tuning circuit for simultaneously tuning both a frequency band corresponding to a channel designated by a user and a frequency band for acquiring detailed program information for a signal. And a digital broadcast receiver. 2. Detailed program information is transmitted in at least one of a plurality of frequency bands belonging to horizontal polarization, and at least one of a plurality of frequency bands belonging to vertical polarization is transmitted. In a digital broadcast receiver for receiving digital broadcasting in which detailed program information is transmitted, reception of a polarized wave including program presentation information of a channel designated by a user among horizontal polarized waves and vertical polarized waves Tuning for simultaneously tuning both the signal presentation frequency band corresponding to the channel specified by the user and the detailed program information acquisition frequency band for acquiring detailed program information for the signal Video and audio information from digital data for program presentation acquired by the circuit and tuning circuit That at the same time, the digital broadcast receiver characterized in that it comprises a DEMUX circuit, to obtain detailed program information from the obtained detailed program information acquiring digital data by tuning circuit.