CN1150750C - Combined video (appliance) device for education using captioning - Google Patents
Combined video (appliance) device for education using captioning Download PDFInfo
- Publication number
- CN1150750C CN1150750C CNB971138265A CN97113826A CN1150750C CN 1150750 C CN1150750 C CN 1150750C CN B971138265 A CNB971138265 A CN B971138265A CN 97113826 A CN97113826 A CN 97113826A CN 1150750 C CN1150750 C CN 1150750C
- Authority
- CN
- China
- Prior art keywords
- signal
- caption
- information
- control
- character
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/782—Television signal recording using magnetic recording on tape
- H04N5/783—Adaptations for reproducing at a rate different from the recording rate
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Electrically Operated Instructional Devices (AREA)
- Television Signal Processing For Recording (AREA)
- Television Systems (AREA)
Abstract
A combined video device for education using captioning includes a system controller for controlling the operation of the device according to the data input from a data input part; a tape transport mechanism for recording the combined video signal received by a tuner and processed by a video signal process device in a recording medium and getting the signal from the medium; an audio frequency reproduce speed control part for controlling the reproducing speed for the audio signal gotten by the tape transport mechanism and processed by an audio frequency signal processing part according to the control signal of the system controller; and a caption processing part for getting the caption information included in the gotten combined video signal or in the combined video signal provided by the tuner in order to display the gotten caption information on a display screen.
Description
Technical field
The present invention relates to the composite video equipment of captions teaching usefulness, particularly a kind of like this composite video equipment that is used for the captions teaching, from wherein receiving the composite video signal that comprises captions and control routine, and it is recorded in a kind of recording medium, when the captions of displayed record, come playback audio signal repeatedly or with slow playback speed according to spectators' needs.
Background technology
Captions broadcast system in the television broadcasting can be categorized as open (open) caption system and closed circuit (closed) caption system, the former is an overlapping text signal in the effective period of TV signal, by being chosen in of broadcasting station demonstrated highlight on the video screen, announcement or the like, and the latter is the non-valid period in TV signal, just vertical blanking period is encoded to caption signal, according to spectators' the display text captions on the screen that are chosen in.
Closed caption broadcasting was used in the U.S. from 1978, can be for the inconvenient people of hearing or because of there not being sign language can not discern people's use of scene speech.This closed caption broadcasting can also be used for foreign language learning.
The United States Patent (USP) of authorizing in March, 1994 discloses the closed caption broadcast system of a kind of suitable demonstration roman character and syllabogram for 5,294, No. 982.In this patent, understand for example captions of Korean syllabogram in detail.Mode according to this patent, in order to broadcast the closed caption of Hangul (Korean alphabet table), a Hangul character is separated into initially, middle and ending consonant phoneme, and send and the corresponding ASCII of each consonant phoneme (ASCII) sign indicating number.Receive ASCII character and to its decoding, conversion is initial then in receiving unit, middle and ending consonant phoneme is to form the Hangul character that shows.
Yet according to this habitual Hangul closed caption system, owing to need the data of two to three bytes could represent a Hangul character at least, its transmission speed and display speed are slow.In addition, because the position of a Hangul character is to retrieve by the combination of three to four byte datas, its decoding program more complicated.
In addition, habitual caption system is imperfect, if write down composite video signal with record and the composite video equipment that reappears the composite video signal of closed caption broadcast system transmission, then can not separate with composite video signal and show caption data.In addition, the reproduction speed that Guan Yong caption system can not the control audio signal.
Summary of the invention
The objective of the invention is in order to solve problems of the prior art, a kind of composite video equipment that is used for the captions teaching is provided, it can show the captions that comprise in the composite video signal, and can be repeatedly or the reproduction that comes the control audio signal with low reproduction speed.
In order to realize above-mentioned and other purposes, the invention provides a kind of composite video equipment that is used for the captions teaching, it comprises: tuner is used to receive the composite video signal that comprises caption information; Apparatus for processing of video signals is used to handle described composite video signal; Data input device is used to import the input data of controlling described operation of equipment; A system controller is used for the operation according to the Data Control video equipment of importing from data input unit, and this importation is used to import the data of control of video operation of equipment; Tape transport is used for writing down or therefrom extracting by the tuner reception and by composite video signal and described audio signal after the apparatus for processing of video signals processing at recording medium; Audio reproduction speed control part is used for controlling according to the control signal that system controller provides the reproduction speed of the audio signal after being extracted and handled by audio signal processor by tape transport; And captions processing section, be used to extract caption information, this caption information is included in the composite video signal of being extracted by tape transport, or be included in the composite video signal that provides by tuner, so that on display screen, show the caption information that extracts, wherein, described audio reproduction speed control unit is controlled the described audio signal of the corresponding described caption information that will be reproduced by fast reproduction speed or slow reproduction speed, or repeats at least twice.
The present invention also provides a kind of television broadcasting system that is used for the distance teaching captions, comprising: apparatus for processing of video signals is used for video information is converted to vision signal; The character information input unit is used to import the fill a vacancy caption data of formula code of 2 byte syllabograms; The control information input unit is used to import 7 control informations, and this information is used to the reception control of closed caption broadcasting; The character code generating means, be used for described 2 byte syllabograms are filled a vacancy the highest significant position MSB of each byte of formula code as first information sign, and, thereby produce the packet of a 18-position character code for fill a vacancy each byte of formula code of described 2 byte syllabograms adds a parity check bit; The control routine generating means, described 7 control informations are divided into high 4 and low 3, add a parity check bit for high 4,2 control routine is differentiated the position, and one second Information sign, thereby produce a high byte, add first parity check bit for described low 3, second parity check bit, 2 control routine is differentiated the position, and the 3rd Information sign, thereby produces a low byte, and add another parity check bit separately for described high and low byte, produce one 18 control routine thus; The packet modulating device adopts digital modulation mode to modulate the described packet of described character code generating means or the generation of described control routine generating means, thereby produces the caption signal with described caption information; The packet modulating device is used for by digital modulation, and modulation has the caption signal of described caption information by described character code generating means or the described packet that produced by described control routine generating means with generation; The coincidence counter device is used to receive the level and the vertical synchronizing signal of described vision signal, and to described horizontal-drive signal counting, described coincidence counter device is resetted by described vertical synchronizing signal; The window signal generating means is used to receive the count value of described coincidence counter device, and produces a window signal, and this signal is used for selecting a predetermined row at each; Switching device is used to respond described window signal, thereby switches described vision signal selectively and described caption signal produces described composite video signal, and transmitter, is used to launch described composite video signal.
The present invention also provides a kind of television broadcasting system that is used for the distance teaching captions, comprising: video processor is used to handle vision signal; A captions encoder, be used to produce caption signal with described caption information, in vision signal, encode, described captions encoder comprises: a coincidence counter, be used for receiving synchronizing signal from described video processor, horizontal-drive signal is counted, thereby in vision signal, select predetermined scan line, and it is resetted by vertical synchronizing signal, and switch element, according to described count value alternately outputting video signal and caption signal, caption signal is superimposed upon on the line specific in the vision signal, thereby produces described composite video signal; And transmitter, be used to launch described composite video signal, wherein, described captions encoder also comprises: a character information unit, be used to receive character data, thereby and the captions character data of the generation multibyte form that responds; A character code generator, it the highest significant position of each byte in the captions character data as a sign, indicating this character data is caption character data relevant with the vision signal of broadcasting or the additional information that has nothing to do with the vision signal of broadcasting, if this character data is the caption character data, described character code generator just replaces each highest significant position with first value, if this character data is an additional data, just replace each highest significant position with second value that is different from first value, and for each byte adds a parity check bit, thereby generation is as first packet of character code; A control information input unit is used to receive the control information of control captions, and produces the captions control data of multidigit form; A control routine generation part, multidigit captions control data is divided into a plurality of high bit numbers and a plurality of low bit number, for a plurality of high positions add first parity check bit, control routine is differentiated the position, and described sign, thereby produce a high byte, for a plurality of low bit numbers add the second and the 3rd parity check bit, control routine is differentiated the position, and described sign, thereby produces a low word, and add additional parity check bit separately for described height and low byte, produce second packet of expression control routine thus: and a modulating part, adopt digital modulation mode to modulate character and control routine, thereby produce caption signal.
Description of drawings
By following with reference to accompanying drawing to the explanation of most preferred embodiment above-mentioned purpose of the present invention, other features and advantage thereof are more obvious.
Fig. 1 is the schematic block diagram that is used for a kind of television broadcasting system of distance teaching captions according to the present invention;
Fig. 2 is the schematic block diagram according to a composite video equipment that uses for the teaching captions of the present invention;
Fig. 3 is according to caption signal structural representation of the present invention; And
Fig. 4 A and 4B represent the packet structure schematic diagram according to caption signal of the present invention.
Embodiment
Fig. 1 has represented the structure of television broadcasting system of the present invention, and this system is used to broadcast captions and the additional information of being selected by spectators.
Referring to Fig. 1, carry out mixing and amplification by 30 pairs of audio signals of an Audio Signal Processing part by microphone 10 inputs, offer TV (TV) signal modulating part 50 then.Amplify by the vision signals of video camera 20 inputs and edit with 40 pairs of vision signal processing sections, offer TV signal modulating part 50 then.TV signal modulating part 50 adopts vestigial side-band modulation that audio signal is carried out frequency modulation(FM), vision signal is carried out amplitude modulation(PAM), the signal of amplitude modulation (AM) and the signal of frequency modulation (FM) are carried out frequency division multiplex and frequency transmission, thereby produce high-frequency signal.Amplify this high-frequency signal by high frequency output 60 then, it is passed through antenna transmission as TV signal.
Word message relevant with video screen or urgent news, announcement or the like additional information is imported into captions encoding block 70 by character information importation 71.Be used to control the control information of captions by 72 inputs of control information importation.The character information importation comprises a keyboard, is used to import Hangul, English, Chinese, Japanese or the like character and special character, and the character information of response input and export syllabogram, for example Hangul of the 2 bytes formula code (KSC 5601) of filling a vacancy.Control information importation 72 comprises for example mode selecting key, the keyboard of function selecting key or the like, and the control information of response input and export 7 binary codes.
Character code generation part 73 is the sign of the MSB (highest significant position) of each byte in the 2 byte character codes of input as caption character/additional information, and in additional information, replace MSB with " 0 ", thereby produce the packet of 18 character codes, add parity check bit for each byte then.
Control routine generation part 74 is divided into 4 and following 3 to 7 control informations of input, add a parity check bit for last 4,2 control routine is differentiated the position, and literal/additional mark, thereby produce one and go up byte, add first parity check bit for following 3, second parity check bit, 2 control routine is differentiated the position, and caption character/additional information sign, thereby produce a following byte, for each byte that produces adds a parity check bit, produce the packet of one 18 control routine thus then.The details of this packet can be described hereinafter.
A packet modulating part 75 adopts digital modulation mode to modulate the packet of character code generation part 73 or 74 generations of control routine generation part.
The synchronizing signal that coincidence counter part 76 receiving video signals processing sections 40 provide, and it is resetted by a vertical synchronizing signal.76 pairs of horizontal-drive signals of coincidence counter portion are counted, and calculate the number of scan line.Window signal generation part 77 receives the count value of synchronometer fractional part 76, and produce a window signal, this is the switch controlling signal of a switch sections 78, is used for caption signal is superimposed upon the specific scan line of vision signal of vision signal processing section 40 outputs.
Fig. 2 has represented to be used in the present invention the composite video equipment of captions teaching.Referring to Fig. 2, system controller 120 an equipment output to the periphery control signal is so that according to the operation that comes control appliance from the data of data input unit 100 inputs.A tape transport 150 is used for writing down or therefrom extracting by tuner 130 receptions and by the composite video signal after 140 processing of vision signal processing section at recording medium.
Audio Signal Processing part 170 receives audio-frequency informations from microphone 100, and it is outputed to tape transport 150, therefore, under the control of system controller 120, by tape transport with audio information recording on recording medium.
The reproduction speed of the audio signal after the control signal that audio reproduction speed control part 180 provides according to system controller 120 is controlled and extracted and handled by Audio Signal Processing part 170 by tape transport 150 changes its reproduction speed in 1/2 to 9 times scope.Audio reproduction speed control part 180 can also be stored the audio information data by the microphone input that is connected to Audio Signal Processing part 170.
Simultaneously, caption information can be extracted in a captions processing section 160, this caption information is included in the composite video signal of being extracted by tape transport 150, or be included in the composite video signal that provides by vision signal processing section 140, so that on display screen, show the caption information that extracts.
The concrete structure of the caption signal that uses in this video equipment below will be described.
In order to send caption data, can utilize the 10th to the 20th of vertical blanking period, a line in the 21st during effective video and the 262nd line.In addition, in order to improve message transmission rate or other purposes, the line of use can be above one.Yet in captions broadcasting, the whole field data of transmission is nonsensical, does not therefore consider.
The transmission bit rate of caption data should be in the scope of 447443.125bps ± 125bps, and the maximum of change in long term should be less than ± 196 (0.0125bps).Only when sending colour TV signal, just need use caption data signal.In addition, transmission bit rate is confirmed as 1/8 of chrominance subcarrier frequency fsc (3579545+10Hz).And the frequency of chrominance carrier and colour burst is synchronous.Chrominance carrier should have continuous phase place between scan line.If because the picture editting has caused the phase place of chrominance carrier to be interrupted, chrominance carrier should be realized Frequency Synchronization with the burst signal on the homologous lines at least.
The Ditital modulation method that employing is called BPSK (binary phase shift keying) or PRK (phase reversal keying) comes modulating data, therein with 0 degree phase place, and the one-period of the sine wave of fsc/8 (447.443KHz) frequency is represented logical one, and with 180 degree phase places, and the one-period of the sine wave of fsc/8 (447.443KHz) frequency is represented logical zero.The maximum magnitude of phase jitter is ± 10.Best signal waveform can change according to the spectral characteristic of television channel, vide infra.Yet, because basic limit band frequency, the BPSK waveform severe distortion can occur in the zone that the occurrence logic value changes, therefore, to need waveform in broadcasting be the 2nd Butterworth filter of 3.5MHz by cut-off frequency and subsequently it is carried out phase compensation.The impulse response of preparing the Butterworth filter of employing can be expressed as:
Because the waveform of caption signal is not a kind of NRZ (nonreturn-to-zero) waveform, but therefore a pure sine wave does not need to adopt above-mentioned standard.Yet, consider that the such mountain area area of Korea S surpasses 70% geographical conditions, in order to enlarge range of receiving, sinusoidal wave maximum is confirmed as 90 ± 5IRE.Because the bandpass characteristics of filter, although define the maximum amplitude of normal data signal, data-signal still overtravel may occur, and the maximum value of this overtravel is confirmed as 5IRE.
Referring to Fig. 3, the data wire of caption signal comprises the bit clock synchronizing signal 302 in 6 cycles, literal initial signal 304, and 18 data wire 306.
Extract the bit clock synchronizing signal 302 of the sine wave in 6 cycles by captions processing section 160, and adopt the frequency of fsc/4 (894.886KHz) to read the bit period of 18 bit data.If the phase place of the chrominance carrier of respective scan line is 0 degree, the distance of the central point OH of the starting point of bit clock synchronizing signal 302 and horizontal-drive signal trailing edge is exactly 9.5 μ s (34 cycles of burst signal), if the phase place of the chrominance carrier of respective scan line is 180 degree, the distance of the central point OH of its starting point and horizontal-drive signal trailing edge is exactly 9.64 μ s (34.5 cycles of burst signal).The frequency of the burst signal of bit clock synchronizing signal and respective scan line is synchronous, therefore just can extract the bit clock synchronizing signal from burst signal.
The frequency of literal initial signal 304 is fsc/16 (223.722KHz), and is equivalent to the one-period that phase place is the sine wave of 180 degree.Literal initial signal 304 is represented the initial of 18 bit data bags.
Data wire 306 is included in 18, and its bit rate is fsc/8 (447.443KHz).Come modulating data line 306 with the BPSK modulation system.
Referring to Fig. 4 A and 4B, packet comprises three parts, just is the parity check P of unit with the literal, caption character/additional information sign C/T and a code value.D0 represents the next word to D8, and D9-D17 represents upper word, and the D17 representative is used for the at first even parity of detected transmission error.D7 and D16 are caption character/additional information signs, and for the situation of caption character, this value is " 0 ", if additional information, this value is exactly " 1 ".The value of D7 and D16 should conform to each other.These signs are used to keep the priority order of literal.D0 represents code value to D6 and D9 to D15.If D5, D6, the code value of D14 and D15 is " 0 ", just it is defined as control routine.Otherwise just it is considered as character code.
The working method that is used for the composite video equipment of captions teaching according to the present invention below will be described.
If spectators have imported the data of corresponding a kind of logging mode by data input unit 110, and this logging mode is the captions broadcasting that will be used to write down teaching after recording medium is loaded into the tape transport 150 of composite video equipment, system controller 120 scans the data of importing by data input unit 110, and becomes logging mode from current pattern.
If current pattern has been become logging mode, the composite video signal of being selected by tuner 130 just is provided for tape transport 150 by vision signal processing section 140, and it is recorded on the recording medium.
Then, for utilize above-noted the recording medium of composite video signal reappear the broadcasting of teaching captions, if imported the data of corresponding a kind of reproduction or replay mode by data input unit 110, system controller 120 just scanning passes through the data that data input unit 110 is imported, and change over reproduction mode from current pattern, so that reappear vision signal and audio signal by tape transport 150.
The vision signal of being reappeared by tape transport 150 is provided for captions processing section 160 carries out captions and handles, and offers CRT then and goes to show.At this moment, if data by data input unit 110 input control audio signal reproduction speed, system controller 120 is just to audio reproduction speed controlling portion 180 output audio reproduction speed control datas, thereby carry out the reproduction of the audio signal of Audio Signal Processing part 170 outputs, change its reproduction speed according to the reproduction speed control data of importing.
Audio reproduction speed control part 180 has a variable-speed replay system (VSPS), so that come fast according to the reproduction speed control data, have aural information function and memory function at a slow speed or the audio signal of repeatedly reappearing corresponding caption information repeatedly, and to audio-frequency information by the microphone input.Correspondingly, the reproduction mode of control output audio signal during caption data that spectators can show on watching screen can be reappeared repeatedly or be reappeared at a slow speed, so just can realize teaching purpose with captions.
As mentioned above, according to the present invention, the speed that can come control audio to reappear according to spectators' needs during owing to demonstration caption data on screen can be used for teaching with this captions broadcasting.
Although the present invention comes description and interpretation with reference to its most preferred embodiment, those skilled in the art obviously can also change its form and details under the condition that does not break away from spirit and scope of the invention.
Claims (9)
1, a kind of composite video equipment that is used for the captions teaching, and this equipment uses with recording medium, and this equipment comprises:
Tuner is used to receive the composite video signal that comprises caption information;
Apparatus for processing of video signals is used to handle described composite video signal;
Data input device is used to import the input data of controlling described operation of equipment;
System controller is used to produce control signal, and according to the described operation of the described equipment of Data Control of data input device input, this data input device is used to import the data of the described operation of the described equipment of control;
Audio signal processor is used for converting audio-frequency information to audio signal;
Tape transport is used for writing down or therefrom extracting by composite video signal and described audio signal after the described apparatus for processing of video signals processing at recording medium;
The audio reproduction speed control unit is used for controlling according to the described control signal that described system controller provides the reproduction speed of the described audio signal after being extracted and handled by described audio signal processor by described tape transport; And
Captions process device, be used to extract described caption information, this caption information is included in the described composite video signal of being extracted by described tape transport, or is included in by in the described composite video signal after the described apparatus for processing of video signals processing, so that show the described caption information that extracts
Wherein, described audio reproduction speed control unit is controlled the described audio signal of the corresponding described caption information that will be reproduced by fast reproduction speed or slow reproduction speed, or repeats at least twice.
2, according to the video equipment of claim 1, wherein, also comprise the microphone that is used to receive audio-frequency information, store described audio-frequency information with described audio reproduction speed control unit.
3, a kind of television broadcasting system that is used for the distance teaching captions comprises:
Apparatus for processing of video signals is used for video information is converted to vision signal;
The character information input unit is used to import the fill a vacancy caption data of formula code of 2 byte syllabograms;
The control information input unit is used to import 7 control informations, and this information is used to the reception control of closed caption broadcasting;
The character code generating means, be used for described 2 byte syllabograms are filled a vacancy the highest significant position MSB of each byte of formula code as first information sign, and, thereby produce the packet of a 18-position character code for fill a vacancy each byte of formula code of described 2 byte syllabograms adds a parity check bit;
The control routine generating means, described 7 control informations are divided into high 4 and low 3, add a parity check bit for high 4,2 control routine is differentiated the position, and one second Information sign, thereby produce a high byte, add first parity check bit for described low 3, second parity check bit, 2 control routine is differentiated the position, and the 3rd Information sign, thereby produces a low byte, and add another parity check bit separately for described high and low byte, produce one 18 control routine thus;
The packet modulating device is used for by digital modulation, and modulation has the caption signal of described caption information by described character code generating means or the described packet that produced by described control routine generating means with generation;
The coincidence counter device is used to receive the level and the vertical synchronizing signal of described vision signal, and to described horizontal-drive signal counting, described coincidence counter device is resetted by described vertical synchronizing signal;
The window signal generating means is used to receive the count value of described coincidence counter device, and produces a window signal, and this signal is used for selecting a predetermined row at each;
Switching device is used to respond described window signal, thereby switches described vision signal selectively and described caption signal produces described composite video signal, and
Transmitter is used to launch described composite video signal.
4, a kind of television broadcasting system that is used for the distance teaching captions comprises:
Video processor is used to handle vision signal;
A captions encoder is used to produce the caption signal with described caption information, encodes in vision signal, and described captions encoder comprises:
A coincidence counter is used for receiving synchronizing signal from described video processor, and to the horizontal-drive signal counting, thereby in vision signal, select predetermined scan line, and it is resetted by vertical synchronizing signal, and
A switch element according to described count value alternately outputting video signal and caption signal, is superimposed upon caption signal on the line specific in the vision signal, thereby produces described composite video signal; And
Transmitter is used to launch described composite video signal,
Wherein, described captions encoder also comprises:
A character information unit is used to receive character data, thereby and the captions character data of the generation multibyte form that responds;
A character code generator, it the highest significant position of each byte in the captions character data as a sign, indicating this character data is caption character data relevant with the vision signal of broadcasting or the additional information that has nothing to do with the vision signal of broadcasting, if this character data is the caption character data, described character code generator just replaces each highest significant position with first value, if this character data is an additional data, just replace each highest significant position with second value that is different from first value, and for each byte adds a parity check bit, thereby generation is as first packet of character code;
A control information input unit is used to receive the control information of control captions, and produces the captions control data of multidigit form;
A control routine generation part, multidigit captions control data is divided into a plurality of high bit numbers and a plurality of low bit number, for a plurality of high positions add first parity check bit, control routine is differentiated the position, and described sign, thereby produce a high byte, for a plurality of low bit numbers add the second and the 3rd parity check bit, control routine is differentiated the position, and described sign, thereby produce a low word, and, produce second packet of expression control routine thus for described height and low byte add additional parity check bit separately: and
A modulating part adopts digital modulation mode to modulate character and control routine, thereby produces caption signal.
5, according to the television broadcasting system of claim 4, wherein, described switch element comprises:
A window signal generator is used for producing a switching signal according to the count value of coincidence counter; And
Switch is according to switching signal alternately outputting video signal and caption signal.
6, according to the television broadcasting system of claim 4, wherein, also comprise:
Audio process is used for audio signal; And
TV signal modulator, be used for treated audio signal is carried out frequency modulation(FM), treated vision signal with the caption signal coding is carried out amplitude modulation(PAM), carry out frequency division multiplex and frequency sends to the audio signal of amplitude modulation with the fm video signal of caption signal coding, from but produce a high-frequency signal.
7, television broadcasting system according to claim 4, wherein, described caption signal comprises a bit clock signal, if the phase place of the chrominance carrier of respective scan line is 0 degree, the bit clock synchronizing signal just from the central point of horizontal-drive signal trailing edge distance be first of first scheduled volume, if the phase place of the chrominance carrier of respective scan line is 180 degree, the bit clock synchronizing signal just from level with regard to the central point of signal trailing edge distance being second of second scheduled volume, and a literal initial signal, be used to represent the starting point of character code and control routine.
8, according to the television broadcasting system of claim 4, wherein, each character code and control routine all comprise with the word being the parity check bit of unit, sign, and a code value, wherein represent that with the value of certain bits in each character code and the control routine a concrete packet is character code or control routine.
9, according to the television broadcasting system of claim 4, wherein, the multiple function of coming designated character information to show with a plurality of low bit number signs, and come additional functions in the designated character information display function with a plurality of high bit number signs.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960023169A KR980007550A (en) | 1996-06-24 | 1996-06-24 | Educational composite video device using caption |
| KR23169/96 | 1996-06-24 | ||
| KR23169/1996 | 1996-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1173782A CN1173782A (en) | 1998-02-18 |
| CN1150750C true CN1150750C (en) | 2004-05-19 |
Family
ID=19463020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB971138265A Expired - Fee Related CN1150750C (en) | 1996-06-24 | 1997-06-24 | Combined video (appliance) device for education using captioning |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR980007550A (en) |
| CN (1) | CN1150750C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7427141B2 (en) | 2004-09-21 | 2008-09-23 | Jong-Ho Kim | Mirror unit for automobile |
| CN101616268A (en) * | 2008-06-27 | 2009-12-30 | 新奥特（北京）视频技术有限公司 | A kind of method of utilizing texture coordinate to generate shadow captions |
-
1996
- 1996-06-24 KR KR1019960023169A patent/KR980007550A/en not_active Application Discontinuation
-
1997
- 1997-06-24 CN CNB971138265A patent/CN1150750C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1173782A (en) | 1998-02-18 |
| KR980007550A (en) | 1998-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1326449B1 (en) | Data decoding method and decoding system | |
| US5963265A (en) | Closed-caption broadcasting and receiving method and apparatus suitable for syllable characters | |
| KR100666285B1 (en) | Data decryption device and data decryption method | |
| CN1148770A (en) | Digital video data coding and decoding device removing caption data noise, and method thereof | |
| US4499503A (en) | Video format signal recording and reproduction system | |
| EP0153664A1 (en) | Playback apparatus for audiovisual disc records | |
| US6281939B1 (en) | Method and apparatus for decoding data encoded in the horizontal overscan portion of a video signal | |
| CN1150750C (en) | Combined video (appliance) device for education using captioning | |
| CN1087126C (en) | Viewer's selection type caption broadcasting device and method capable of transmitting dual language caption | |
| EP0797354A1 (en) | Recording and/or replaying teletext signals | |
| CN1195376C (en) | Caption signal broadcasting method for audience selecting caption broad cast | |
| KR100194215B1 (en) | Speech and Text Multiple Output Devices | |
| KR100194224B1 (en) | Selective subtitle broadcasting method and receiving method | |
| US5563663A (en) | Method for the synchronization of control functions with video signals in a television receiver and device for the implementation thereof | |
| KR0164735B1 (en) | Addition information display apparatus and method thereof | |
| KR100188271B1 (en) | Tele-viewer option additional information display apparatus & method thereof | |
| KR100188279B1 (en) | Televiewer option caption broadcasting, receive apparatus & method with dual-words caption transmit function | |
| KR100188277B1 (en) | Sub-channel language distinction method of televiewer option caption signal | |
| JP2597873B2 (en) | Audio decoder | |
| KR0181899B1 (en) | Method for detecting the data error of a viewer's selection type caption broadcasting | |
| KR100188286B1 (en) | Caption signal format of caption broadcasting televiewer option | |
| KR100279958B1 (en) | Video Broadcasting System with Hangul Subtitle Service Function | |
| KR100206115B1 (en) | Method for displaying picture a moment stop additional information of televiewer option | |
| KR0176764B1 (en) | Method and apparatus for processing a caption information encoding/decoding of a vcr | |
| KR0164736B1 (en) | Words code transmission and receiving apparatus, method using one channel for viewer selecting caption broadcasting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040519 Termination date: 20160624 |