CN1110847A - Apparatus and method for discriminating reception of additional sound in satellite broadcasting reception system - Google Patents
Apparatus and method for discriminating reception of additional sound in satellite broadcasting reception system Download PDFInfo
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- CN1110847A CN1110847A CN94103782A CN94103782A CN1110847A CN 1110847 A CN1110847 A CN 1110847A CN 94103782 A CN94103782 A CN 94103782A CN 94103782 A CN94103782 A CN 94103782A CN 1110847 A CN1110847 A CN 1110847A
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- digital accompaniment
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- accompaniment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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- Computer Networks & Wireless Communication (AREA)
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- Television Receiver Circuits (AREA)
- Circuits Of Receivers In General (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to a device and a method used for discriminating the receiving of auxiliary accompanying sound in a satellite broadcast receiving system. The device comprises a tuner used for tuning a satellite broadcasting signal to a channel chosen by a user, a band-pass filter, a digital accompanying sound processor used for the expansion and the deinterlace of a digital accompanying sound signal, a control data decoder, a D / A converter, a microprocessor, and a display unit. According to the method, whether the auxiliary accompanying sound is received or not is automatically discriminated. If the auxiliary accompanying sound is not received, the main accompanying sound is output although the accompanying sound is chosen by the user.
Description
Put it briefly, the present invention relates to satellite broadcast reception systems, this system can receiving video signals, with this vision signal expansion audio signal that is complementary, and secondary audio (additional sound accompaniment) signal that is not complementary with this vision signal; More specifically, the present invention step and to a kind of apparatus and method of the reception that in a satellite broadcast reception systems, is used to differentiate this secondary audio, in this satellite broadcast reception systems, whether this secondary audio has been received is automatically differentiated, if this secondary audio is not received, main audio just is output (although secondary audio is by user-selected).
Usually, vision signal, analog audio signal and sub-sound signal are compressed and are launched at the satellite broadcasting station.Vision signal of launching from the satellite broadcasting station and simulation and digital accompaniment signal are received and handle by satellite broadcast reception systems, and therefore, they can be respectively by cathode ray tube (cloth is thought pipe always) and loud speaker output.
Fig. 1 is a kind of schematic diagram of universal data format of the first digital accompaniment frame of the digital accompaniment signal launched from the satellite broadcasting station of a graphic extension, and Fig. 2 is a kind of schematic diagram of universal data format of the second digital accompaniment frame of the digital accompaniment signal launched from the satellite broadcasting station of a graphic extension.This digital accompaniment signal is at the satellite broadcasting station, is unit or is unit modulation back emission with the second digital accompaniment frame shown in Figure 2 with the first digital accompaniment frame shown in Figure 1.
As shown in fig. 1, the first digital accompaniment frame of digital accompaniment signal comprises the synchrodata SYN that is used for frame synchronization, be used to differentiate the control data CTL of the state that transmits and receives of the first digital accompaniment frame, the main audio data LS1 and the RS1 that are complementary with the vision signal of being launched, and the secondary audio data LAS and the RAS that are not complementary with this vision signal.In order only to provide service to those chargings (for counter value) satellite broadcasting user, vision signal and sound accompaniment data are all crossed (scrambled) by scramble.Interrelate therewith, first kind digital accompaniment frame also comprises and is used to recover scramble sound accompaniment classification of Data data (range data) RG.In addition, first kind digital accompaniment frame also comprises the information data ID that is used to indicate about the signal of service such as teletext or fax, and the error correction data ECD that is used to proofread and correct the error that transmission course produces.
When the audio frequency of main audio data LS1 and RS1 and secondary audio data LAS and RAS was lower than 15 KHz, the first digital accompaniment frame with aforementioned data form was launched away from the satellite broadcasting station.In this case, because the compression ratio of main audio data LS1 and RS1 and secondary audio data LAS and RAS is too big, the Television Sound Quality of first kind digital accompaniment frame is not fine.
On the other hand, as shown in Figure 2, the second digital accompaniment frame comprises synchrodata SYN successively, control data CTL, grouped data RG, information data ID, main audio data LS2 and RS2, information data ID and error correction data ECD.
When the audio frequency of main audio data LS2 and RS2 was higher than 15 KHz, the second digital accompaniment frame with aforementioned data form was launched from the satellite broadcasting station.In this case, because the compression ratio of main audio data LS2 and RS2 is little, the Television Sound Quality of the second digital accompaniment frame is better than the Television Sound Quality of the first digital accompaniment frame.
Below, with reference to the flow chart among Fig. 3, will a kind of main audio data LS1 and RS1 and LS2 and RS2 that receives digital audio signal, the operation of the satellite broadcast reception systems of the routine of secondary audio data LAS and RAS be described.
At first, check that satellite broadcasting receives the options button signal and whether is transfused to.If find out, this satellite broadcasting receives key signals and is transfused to, and checks then whether channel options button signal is transfused to.On the contrary, receive options button signal and also be provided with and be transfused to if identified this satellite broadcasting, then a common broadcast signal is by tuning.
If find, this channel selection key signals is transfused to, and then satellite broadcast signal is tuned on the chosen channel, is this signal of unit demodulation with the digital accompaniment frame then.In addition, about the information of selected channel be displayed on the screen or liquid crystal indicator on, to be discerned by the user.
On the contrary, be not transfused to if identify the channel selection key signals, then satellite broadcast signal is tuned to a predetermined channel, is the unit demodulation with the digital accompaniment frame then.In addition, the information of the channel of relevant storage is presented on screen or the liquid crystal indicator, so that the user can discern.
Then, according to the channel of satellite broadcast signal-be tuned to selected channel or storage and by demodulation-the control data CTL of digital accompaniment frame analyze to check that this digital accompaniment frame is the first kind digital accompaniment frame or the second class digital accompaniment frame.
At the digital accompaniment frame is under the situation of first kind digital accompaniment frame, checks whether secondary audio options button signal is transfused to.Be transfused to if find this secondary audio options button signal, then just be displayed on the screen about the information of the input of this secondary audio options button signal or liquid crystal indicator on, to be discerned by the user.In addition, secondary audio data LAS and the RAS that receives on channel selected or storage is output by a loud speaker.
When being identified, when secondary audio options button signal was not transfused to, the RS1 of the main audio data LS1 of the first kind digital accompaniment frame that receives just was output by loud speaker.
Digital accompaniment frame in demodulation is that main audio data LS2 and RS2 also export by loud speaker under the situation of the second class digital accompaniment frame on the other hand.
Yet there is shortcoming in some aspects in the satellite broadcast reception systems of this routine, although promptly asked by the user at secondary audio options button signal, under the situation that secondary audio is not emitted by the satellite broadcasting station, noise also is output by loud speaker.As a result, the user just can only hear noise by loud speaker.In addition, in this case, when secondary audio presets recording mode (reserve-recording mode) (timing recording) when being set by the user, this secondary audio can not be by record on audiotape.In this case, the user may think the normal condition of satellite broadcast reception systems by mistake fault.
Therefore, the present invention is after with reference to above-mentioned those problems and do, an object of the present invention is, provide a kind of in satellite broadcast reception systems, differentiate the apparatus and method of the reception of secondary audio, in this system, if secondary audio options button signal is transfused to, automatically differentiate then whether the secondary audio data are sent from the satellite broadcasting station, emit that then these secondary audio data are by demodulation and by a loud speaker output from the satellite broadcasting station if identify these secondary audio data; On the contrary, if identify that these secondary audio data do not emit from the satellite broadcasting station then the main audio data are output by demodulation and by loud speaker, therefore, when the secondary audio data are selected by the user, just can obtain high-quality sound accompaniment.
According to an aspect of the present invention, in a satellite broadcast reception systems, provide the device of the reception that is used to differentiate secondary audio, it comprise be used for the satellite broadcast signal that will receive by antenna be tuned to tuner on the channel selected of user; Be used for band pass filter means that the digital accompaniment signal from the tuned satellite broadcast signal of described tuner output is carried out filtering, being used for the digital accompaniment frame is unit, filtered digital accompaniment signal from described band pass filter means output is carried out demodulation, with the device that has been carried out de-spread (expanding) and the digital accompaniment signal of this expansion (expand) has been carried out the digital accompaniment processing of deinterleave (deniterleaving) by the digital accompaniment signal of demodulation; Be used for decoding to differentiate that this digital accompaniment frame is the first kind digital accompaniment frame or the second class digital accompaniment frame by the control data of the digital accompaniment frame of the digital accompaniment signal of described digital accompaniment processing unit demodulation, and check whether the secondary audio data exist in this digital accompaniment frame, and the control data decoding device that demodulation result is added to described digital accompaniment processing unit; Be used for that digital accompaniment conversion of signals with the deinterleave of described digital accompaniment processing unit becomes analog audio signal and with the D of this analog audio signal by a loud speaker output, the execution of whole service that is used to control this device is by the control device of user-selected fixed (work) pattern; And the display unit that is used for the selected pattern of explicit user.
According to another aspect of the present invention, the method of differentiating the reception of secondary audio in satellite broadcast reception systems is provided, this method comprises: be unit with the digital accompaniment frame (a), the control data of the digital accompaniment signal of demodulation is decoded to differentiate that this digital accompaniment frame is the first kind digital accompaniment frame or the second class digital accompaniment frame and checks whether have the secondary audio data to exist in this digital accompaniment frame, (b), then the main audio data of first kind digital accompaniment frame are exported by a loud speaker if having identified this digital accompaniment frame in described step (a) is that first kind digital accompaniment frame and secondary audio data do not exist in this digital accompaniment frame.
From following, in detailed description that appended each accompanying drawing matches, aforesaid and other purposes of the present invention, characteristics and advantage will more be expressly understood, in these accompanying drawings:
Fig. 1 is a kind of schematic diagram of universal data format of the first kind digital accompaniment frame of the digital accompaniment signal launched from the satellite broadcasting station of a graphic extension;
Fig. 2 is a kind of schematic diagram of universal data format of the second class digital accompaniment frame of the digital accompaniment signal launched from the satellite broadcasting station of a graphic extension;
Fig. 3 is the flow chart of running of satellite broadcast reception systems of the second class digital accompaniment frame of the first kind digital accompaniment frame of reception Fig. 1 of a routine of a graphic extension or Fig. 2;
Fig. 4 is a block diagram according to the device of the reception that is used to differentiate secondary audio in the satellite broadcast reception systems of the present invention; And
Fig. 5 and Fig. 6 are that a graphic extension is according to the flow chart of differentiating the method that secondary semitone receives in the satellite broadcast reception systems of the present invention.
With reference to Fig. 4, show according to the present invention, in a satellite broadcast reception systems, be used to differentiate the block diagram of the device that secondary audio receives.As shown in this Fig, secondary audio receives identification device and comprises a tuner 12, be used for by the received satellite broadcast signal of antenna 11 be tuned to one by user-selected fixed channel.
The frequency modulation analog audio signal that simulation sound accompaniment processor 14 is used in the tuned satellite broadcast signal that detects tuner 12 is handled this detected analog audio signal and the simulation audio signal that this is processed is exported by a loud speaker SP.
Secondary audio receives identification device and comprises that also one is used for the band pass filter 15 that is carried out filtering by the digital accompaniment signal of tuning satellite broadcast signal from tuner 12, one is used for the digital accompaniment frame is that unit carries out demodulation to the filtered digital accompaniment signal from band pass filter 15, digital accompaniment signal behind the spread demodulation, and 16, one of the digital accompaniment processors that the digital accompaniment signal that this has been expanded carries out deinterleave are used for being decoded by the control data of the digital accompaniment frame of the digital accompaniment signal of digital accompaniment processor 16 demodulation to differentiate that this digital accompaniment frame is the first kind digital accompaniment frame or the second class digital accompaniment frame and checks at this digital accompaniment frame whether have secondary audio data LAS and RAS to exist and this decoded result is added to the control data decoder 17 that digital accompaniment processor 16 gets on.
In addition, this secondary audio receives identification device and also comprises a D/A (D/A) transducer 18, be used for to become from the treated digital accompaniment conversion of signals of digital accompaniment processor 16 analog audio signal and this analog audio signal is passed through a loud speaker SP output, a microprocessor 19, each parts that it is used for controlling this device to be carrying out user-selected fixed (work) pattern, and one is used to show by the display unit 20 of user-selected fixed mode of operation.
Below, will be described in detail the running that the secondary audio with aforementioned structure according to the present invention receives identification device.
At first, under the control of microprocessor 19, be tuned to the user with on the selected channel of tuner 12 by antenna 11 received satellite broadcast signals.
Be added on video signal preprocessor 13 and the simulation sound accompaniment processor 14 from the satellite broadcast signal by tuning of tuner 12 outputs.Video signal preprocessor 13 is from being detected vision signal the tuning satellite broadcast signal, handles this detected vision signal and the vision signal that will handle is exported by cathode ray tube.Simulation sound accompaniment processor 14 carries out frequency demodulation from being detected the frequency modulation analog audio signal the tuning satellite broadcast signal to the analog audio signal that is detected, and will export by loud speaker SP through the analog audio signal of frequency demodulation.
In addition, also being added on the band pass filter 15 by tuning satellite broadcast signal from tuner 12 outputs.The digital accompaniment signal of 15 pairs of tuned satellite broadcast signals of this band pass filter carries out filtering and filtered digital accompaniment signal is added on the digital accompaniment processor 16.
In digital accompaniment processor 16, according to phase change, the digital accompaniment signal is transformed into the digital accompaniment data, is the unit demodulation with the first kind digital accompaniment frame shown in Fig. 1 or with the second class digital accompaniment frame shown in Fig. 2 then.The demodulation of digital accompaniment signal is by by predetermined amount the digital accompaniment data being write in the memory, reads from this memory in mode clocklike then that the digital accompaniment data that write finish.
Control data CTL by the digital accompaniment frame of the digital accompaniment signal of digital accompaniment processor 16 demodulation is added on the control data decoder 17.The bit that several of the control data CTL of these decoder 17 decoded digital audio frames are predetermined, so that identify this digital accompaniment frame is the first kind digital accompaniment frame or the second class digital accompaniment frame, and it is monophony sound accompaniment (mono sound) frame, stereo audio frame, still two audio frames.
The result who differentiates from the quilt of control data decoder 17 outputs feeds back to digital accompaniment processor 16.This digital accompaniment processor 16 becomes the reset condition of audio signal according to the digital accompaniment signal extension of the result who is differentiated from control data decoder 17 after with demodulation.Then, the digital accompaniment signal of this expansion is by digital accompaniment processor 16 deinterleaves, and therefore, this audio signal has the transmission sequence identical with the order of original figure audio signal.
In addition, the result who differentiates from the quilt of control data decoder 17 is added on the microprocessor 19.According to the result who differentiates from the quilt of control data decoder 17 outputs, microprocessor 19 control display units 20 are the first kind digital accompaniment frame or the second class digital accompaniment frame to demonstrate the digital accompaniment frame.
On the other hand, under the situation that secondary audio options button signal is asked by the user, corresponding drive signal is added on the microprocessor 19.After receiving this drive signal, these control data decoders 17 of microprocessor 19 control are with several predetermined bits of the control data CTL of decoded digital audio frame, so that the existence of secondary audio data LAS and RAS in the check dight audio frame.
When identifying secondary audio data LAS and RAS when being launched, then the secondary audio data LAS of digital accompaniment frame and RAS just are expanded and deinterleave by digital accompaniment processor 16.On the contrary, if quilt is identified secondary audio data LAS and RAS is not launched, the main audio data LS1 and the RS1 of data audio frame just are expanded and deinterleave by digital accompaniment processor 16.
Subsequently, convert analog audio signal to by D/A converter 18 and by loud speaker SP output from the digital accompaniment signal of the deinterleave of digital accompaniment processor 16 output.
In addition, according to the result that control data decoder 17 is differentiated, microprocessor 19 control display units 20 are to show whether secondary audio data LAS and RAS are launched.
Fig. 5 be a graphic extension according to the present invention, be used for differentiating the flow chart of the method that secondary audio receives at satellite broadcast reception systems.At first, check that satellite broadcasting receives the options button signal and whether is transfused to.If be checked through, satellite broadcasting receives the options button signal and is transfused to, and checks further then whether the channel selection key signals is transfused to.On the contrary, if found out, satellite broadcasting receives the options button signal and is not transfused to, and then a common broadcast signal is by tuning.
When identifying the channel selection key signals when being transfused to, then satellite broadcast signal is tuned to by on the user-selected fixed channel, is this signal of unit demodulation with the digital accompaniment frame then.In addition, be displayed on the screen about the information of selected channel or liquid crystal indicator on.Therefore, the information of this chosen channel can be discerned by the user.
On the contrary, if found out that the channel selection key signals is not transfused to, then satellite broadcast signal is tuned on the channel of a storage in advance, is this signal of unit demodulation with the digital accompaniment frame then.In addition, about the information of the channel of this storage be displayed on the screen or liquid crystal indicator on, therefore, these information can be discerned by the user.
Then, according to also being analyzed to differentiate that this digital accompaniment frame is the first kind digital accompaniment frame or the second class digital accompaniment frame by the control data CTL of the digital accompaniment frame of the satellite broadcast signal of demodulation on the channel that is tuned to selected channel or storage.
When the digital accompaniment frame is first kind digital accompaniment frame, reexamines secondary audio options button signal and whether be transfused to.Be transfused to if find out secondary audio options button signal, the purpose in order to check whether secondary audio data LAS and RAS have been launched is away then analyzed the control data CTL of this first kind digital accompaniment frame.
If find out, this secondary audio data LAS and RAS are launched, and then the secondary audio data LAS and the RAS of this first kind digital accompaniment frame that is launched just are extended to its reset condition, then by deinterleave.In addition, about the input information of this secondary audio options button signal also be displayed on the screen or liquid crystal indicator on, so these information can be discerned by the user.Then, secondary audio data LAS and the RAS on channel selected or storage is output by loud speaker SP.
If under the situation that secondary audio options button signal has been transfused to, and secondary audio data LAS and RAS are not launched out, the main audio data LS1 and the RS1 of the first kind digital accompaniment frame of then being launched just are extended to its reset condition, and by deinterleave, export by loud speaker SP.
On the other hand, be under the situation of the second class digital accompaniment frame at the digital accompaniment frame, the main audio data LS2 and the RS2 of the second class digital accompaniment frame of then being launched just are extended to its reset condition, and by deinterleave, export by loud speaker SP.
From above, apparent, according to the present invention, under the situation that secondary audio options button signal has been imported, can differentiate automatically whether the secondary audio data are emitted from the satellite broadcasting station.Then, emit from the satellite broadcasting station if find out the secondary audio data, then these secondary audio data are exported by loud speaker, otherwise, do not emitted if find out the secondary audio data from the satellite broadcasting station, then main audio is exported by loud speaker.Therefore, when secondary audio by user-selected timing, can avoid by the loud speaker output noise.When secondary audio was selected by the user, this just had the effect that obtains high Television Sound Quality.
Although disclose most preferred embodiment of the present invention for schematic purpose, but those skilled in the art will recognize that, does not break away from as various improvement, the additions and deletions of the scope of the present invention announced at appending claims subsequently and spirit of the present invention and to substitute all be possible.
Claims (2)
1, a kind of device that is used for the reception of satellite inspector broadcast receiver system secondary audio comprises:
Be used for will by the received satellite broadcast signal of antenna be tuned to by the tuner on the user-selected fixed channel;
Be used for the band pass filter means that the digital accompaniment signal to the satellite broadcast signal behind described tuner output tuning carries out filtering;
Being used for the digital accompaniment frame is unit, the digital accompaniment processing unit that the filtered digital accompaniment signal from the output of described band pass filter means is carried out demodulation, the digital accompaniment signal after the demodulation is expanded and the digital accompaniment signal after the expansion carried out deinterleave;
Be used for decoding through the control data of the digital accompaniment frame of the digital accompaniment signal of described digital accompaniment processing unit demodulation differentiating that this digital accompaniment frame is the first kind digital accompaniment frame or the second class digital accompaniment frame and to check whether this digital accompaniment frame has the secondary audio data to exist, and decoded result is added to control data decoding device on the described digital accompaniment processing unit;
Be used for becoming the digital accompaniment conversion of signals of the deinterleave of exporting from described digital accompaniment processing unit analog audio signal also with the D of this analog audio signal by loud speaker output;
The whole operations that are used to control described device are to carry out the control device by user-selected fixed mode of operation; And
Be used to show by the display unit of user-selected fixed mode of operation.
2, a kind of method of differentiating the reception of secondary audio in satellite broadcast reception systems comprises following each step:
(a) with the digital accompaniment frame be the control data of the digital accompaniment signal of unit after to demodulation to decode with the discriminating digit audio frame be the first kind digital accompaniment frame or the second class digital accompaniment frame, and check in the digital accompaniment frame, whether have the secondary audio data to exist; And
(b) if finding out the digital accompaniment frame in described step (a) is first kind digital accompaniment frame and when not having the secondary audio data in this digital accompaniment frame, main audio data by loud speaker output first kind digital accompaniment frame then.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR5425/93 | 1993-03-31 | ||
| KR5425/1993 | 1993-03-31 | ||
| KR1019930005425A KR960000148B1 (en) | 1993-03-31 | 1993-03-31 | The satelite receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1110847A true CN1110847A (en) | 1995-10-25 |
| CN1064199C CN1064199C (en) | 2001-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94103782A Expired - Fee Related CN1064199C (en) | 1993-03-31 | 1994-03-31 | Apparatus and method for discriminating reception of additional sound in satellite broadcasting reception system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH077695A (en) |
| KR (1) | KR960000148B1 (en) |
| CN (1) | CN1064199C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5180675B2 (en) | 2008-05-13 | 2013-04-10 | 本田技研工業株式会社 | Riding lawn mower |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR890016845A (en) * | 1988-04-30 | 1989-11-30 | 최근선 | Negative Speech Delay Device for TV Receiver |
| DE3842411A1 (en) * | 1988-12-16 | 1990-06-21 | Grundig Emv | TELEVISION RECEIVER WITH DIGITAL AND ANALOGUE SOUND SIGNAL PROCESSING |
-
1993
- 1993-03-31 KR KR1019930005425A patent/KR960000148B1/en not_active IP Right Cessation
-
1994
- 1994-03-31 JP JP6062340A patent/JPH077695A/en active Pending
- 1994-03-31 CN CN94103782A patent/CN1064199C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH077695A (en) | 1995-01-10 |
| KR940023066A (en) | 1994-10-22 |
| KR960000148B1 (en) | 1996-01-03 |
| CN1064199C (en) | 2001-04-04 |
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