CN101304293B - Apparatus and method for receiving and transmitting digital broadcast - Google Patents
Apparatus and method for receiving and transmitting digital broadcast Download PDFInfo
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- CN101304293B CN101304293B CN2008101271787A CN200810127178A CN101304293B CN 101304293 B CN101304293 B CN 101304293B CN 2008101271787 A CN2008101271787 A CN 2008101271787A CN 200810127178 A CN200810127178 A CN 200810127178A CN 101304293 B CN101304293 B CN 101304293B
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Abstract
The invention discloses a digital broadcast receiving device, comprising a signal receiving module, a control module and a data exchange interface. The signal receiving module receives digital broadcast signals; the control module is connected with the signal receiving module through the data exchange interface and reads the digital broadcast signals and converts the signals into a data stream which accords with the upper computer interface transmission. The invention also provides a digital broadcast receiving method. The invention also provides a digital broadcast transmitting device, comprising a signal transmitting module, a data exchange interface and a control module; wherein, the control module writes the data stream in the signal transmitting module through the data exchange interface, and the signal transmitting module modulates the data stream into the digital broadcast signals to transmit. The invention also provides a digital broadcast transmitting method. The device can receive and transmit the digital broadcast signals conveniently and rapidly.
Description
Technical field
The present invention relates to the digital broadcasting field, relate in particular to a kind of digital broadcasting reception, emitter and method thereof.
Background technology
Along with the development of technology, digital broadcasting only the transmitting audio signal, can also transmit the multi-media signal that comprises video, data, literal, figure etc. on traditional sense.Though existing computer and/or multimedia portable equipment energy receiving digital broadcast signal are convenient inadequately and quick.In addition, existing computer and/or multimedia portable equipment still do not possess the function of launching digital broadcast signal easily and efficiently.Therefore how to realize in existing computer and/or multimedia portable equipment that receiving and dispatching digital broadcast signal easily and efficiently is one of prior art technical issues that need to address.
Summary of the invention
One of purpose of the present invention provides convenient, fast digital broadcasting reception, emitter and the method thereof of receiving and dispatching digital broadcast signal of a kind of energy.
The invention provides a kind of digital broacast receiver, comprise the signal receiving module of first-in first-out, control module, flash interface and at least one NAND FLASH; Described signal receiving module is with first-in first-out (FIFO) pattern receiving digital broadcast signal, and digital broadcast signal is carried out demodulation process, and the digital broadcast signal after the demodulation process is stored in the FIFO memory; Judge again whether data satisfy the output requirement in the FIFO memory, if satisfy, useful signal will be sent in the Data Identification position of signal receiving module; In addition, judge whether the data in the FIFO memory satisfy the output requirement is whether the data storage capacity of judging the FIFO memory reaches 1/4,1/2 or 3/4 of its memory capacity,, then satisfy the output requirement if reach; After the ready/busy signal end of flash interface receives useful signal, can produce read signal at the read signal end, if the control signal of flash interface is a useful signal, then read signal is sent to control module by logic gates, and described control signal comprises input/output signal; Described then signal receiving module is sent to control module with the data in its FIFO memory by data wire; Described control module is connected with signal receiving module by flash interface, reads described digital broadcast signal and convert to meet host computer interface data flow transmitted; Described control module also is connected with NAND FLASH by flash interface, the read or write of control NANDFLASH; NAND FLASH and signal receiving module are connected with control module by same flash interface, perhaps are connected with control module by different flash interfaces separately;
The read signal of described flash interface links to each other with the read signal end of signal receiving module by logic gates with the control signal end, and the ready/busy signal end of flash interface links to each other with the Data Identification position end of signal receiving module; The read signal of flash interface produces with address cycle signal, instruction cycle signal or the general input/output signal of flash interface; Described host computer interface comprises serial ports, SPI interface, USB interface, SATA interface, I2C bus interface and SDIO interface; Described logic gates comprises and door or door inclusive NAND door.
Also a kind of digital broadcast transmitting injection device of the present invention comprises signal emission module, flash interface, control module and at least one NAND FLASH of first-in first-out; Described control module writes data flow by flash interface to signal emission module, and described signal emission module becomes digital broadcast signal to launch described data stream modulates with the first-in first-out pattern; Described control module also is connected with NAND FLASH by flash interface, the read or write of control NAND FLASH; NAND FLASH and signal emission module are connected with control module by same flash interface, perhaps are connected with control module by different flash interfaces separately; The ready/busy signal end of described flash interface links to each other with the Data Identification position end of signal emission module, and the write signal end of flash interface and control signal end link to each other with the write signal end of signal emission module by logic gates; The write signal of flash interface produces with address cycle signal, instruction cycle signal or the general input/output signal of flash interface; Described logic gates comprises and door or door inclusive NAND door; Described data flow is from host computer or NAND FLASH; Described host computer comprises computer, mobile phone or PDA; Described data flow comprises voice data, video data, literal and/or figure.
The present invention can receive and dispatch digital broadcast signal easily and efficiently by digital broadcasting reception, emitter and method thereof.
Description of drawings
Fig. 1 is the structured flowchart of the digital broacast receiver of one embodiment of the invention;
Fig. 2 is the structured flowchart of the digital broacast receiver of another embodiment of the present invention;
Fig. 3 is the schematic flow sheet of the digital broadcast receiving method of one embodiment of the invention;
Fig. 4 is the structured flowchart of the digital broadcast transmitting injection device of one embodiment of the invention;
Fig. 5 is the structural representation of the digital broadcast transmitting injection device of another embodiment of the present invention;
Fig. 6 is the schematic flow sheet of the digital broadcast transmitting method of one embodiment of the invention;
Fig. 7 is the circuit diagram that one embodiment of the invention digital broadcasting receives.
The object of the invention, function and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Digital broadcasting reception, emitter and method thereof that the embodiment of the invention provides, read the digital broadcast signal of signal receiving module and convert to by data exchange interface by control module and meet host computer interface data flow transmitted, thereby realized the reception of digital broadcast signal easily and efficiently; In addition, writing to signal emission module by data exchange interface by control module can be for the data flow of signal emission module modulate emission, thereby has realized the emission of digital broadcast signal easily and efficiently.
With reference to Fig. 1, the system configuration of the digital broacast receiver of one embodiment of the invention is shown, comprise signal receiving module 101, data exchange interface 102 and control module 103; Described signal receiving module 101 receiving digital broadcast signals also carry out demodulation process; Described control module 103 is connected with signal receiving module 101 by data exchange interface 102, reads the digital broadcast signal after signal receiving module 101 demodulation process and convert to meet host computer interface data flow transmitted.Wherein, described data exchange interface 102 comprises it being flash interface.The read signal end of described flash interface and control signal end are by logic gates and be operated in FIFO (First Input First Output, FIFO) the read signal end of the signal receiving module under the pattern connects, (ready/busy, R/B) signal end links to each other with the Data Identification position end of signal receiving module under being operated in fifo mode the R/B of flash interface.Described logic gates comprises and door or door inclusive NAND door etc.The read signal of flash interface also can produce with address cycle (ALE) signal, instruction cycle (CLE) signal or general I/O (GPIO) signal of flash interface.In the present embodiment, digital broadcast signal can be digital television signal, and described digital television signal meets standards such as DVB-T, DVB-S, DVB-S2, DVB-C, DVB-H, DMB-TH, T-DMB, CMMB, ISDB-T, ISDB-S, ATSC, MFLO, DAB.Wherein, described host computer interface comprises serial ports, SPI interface, USB interface, SATA interface, I2S bus interface and SDIO interface.Host computer comprises computer, mobile phone or PDA etc.Host computer can carry out obtaining after the processing such as demultiplexing, decoding the audio and video data streams that can play to the data flow that is received, and not only can realize digital television function, can also listen to the broadcast message from the broadcasting station.
With reference to Fig. 2, the system configuration of the digital broacast receiver of another embodiment of the present invention is shown, comprise signal receiving module 101, data exchange interface 102, control module 103 and at least one memory module 104; Described control module 103 is connected with signal receiving module 101 by data exchange interface 102, reads described digital broadcast signal and convert to meet host computer interface data flow transmitted; Described control module 103 is connected the read or write of control storage module 104 by data exchange interface 102 with memory module 104; Memory module 104 can be connected with control module 103 by a data Fabric Interface 102 simultaneously with signal receiving module 101, also can be connected with control module 103 by a data Fabric Interface 102 respectively.Described signal receiving module 101 receiving digital broadcast signals.Host computer can be read and write by 103 pairs of memory modules 104 of control module.Present embodiment adopts memory module 104 to expand the function of digital broacast receiver, makes digital broacast receiver realize can also realizing the USB flash disk function when digital broadcast signal receives.
With reference to Fig. 3, the flow process of one embodiment of the invention digital broadcast receiving method is shown, by using digital broacast receiver to realize the reception of digital broadcast signal, described digital broacast receiver comprises signal receiving module 101, data exchange interface 102 and control module 103; Also comprise step:
The data flow way of output of step S1, signalization receiver module 101 is a fifo mode;
Step S2, signal receiving module 101 receiving digital broadcast signals carry out demodulation process, and are sent to control module 103 by data exchange interface 102;
Step S4, control module 103 convert the digital broadcast signal after the demodulation process to the data flow that meets host computer interface transmission standard.
Wherein, step S2 further comprises:
Step S21, signal receiving module receive radio broadcasting signal, radio broadcasting signal is carried out demodulation process, and the radio broadcasting signal after the demodulation process is stored in the FIFO memory of signal receiving module;
Step S22, signal receiving module judge whether the data in the FIFO memory satisfy the output requirement, if satisfy, useful signal will be sent in the Data Identification position of signal receiving module; Judge whether the data in the FIFO memory satisfy the output requirement is whether the data storage capacity of judging the FIFO memory reaches certain value, for example, whether reach 1/4,1/2 or 3/4 of its memory capacity herein; If reach, then satisfy the output requirement.
After the ready/busy signal end of step S23, data exchange interface receives useful signal, can produce read signal at the read signal end; If the control signal of data exchange interface is a useful signal, then read signal is sent to control module by logic gates; Described control signal comprises Chip Enable control signal or GPIO signal;
Step S24, signal receiving module are sent to control module with the data in its FIFO memory by data wire.
Can realize the reception of digital broadcast signal by the above step of above-mentioned execution.
With reference to Fig. 4, the system configuration of the digital broadcast transmitting injection device of one embodiment of the invention is shown, comprise signal emission module 105, data exchange interface 102 and control module 103; Described control module 103 writes data flow by data exchange interface 102 to signal emission module 105, and described signal emission module 105 becomes digital broadcast signal to launch described data stream modulates.Described data exchange interface 102 comprises it being flash interface.The data wire of described flash interface is connected with the data wire of signal emission module 105 under being operated in fifo mode, R/B (the ready/busy of flash interface, R/B) signal end links to each other with the Data Identification position end of signal emission module 105 under fifo mode, and the write signal end of flash interface and control signal end link to each other with the write signal end of signal emission module 105 by logic gates.Described logic gates comprises and door or door inclusive NAND door.The write signal of flash interface also can produce with address cycle (ALE) signal, instruction cycle (CLE) signal or general I/O (GPIO) signal of flash interface.Wherein, data flow is from host computer or memory module.Described host computer comprises computer, mobile phone or PDA etc.; Described data flow comprises voice data, video data, data, literal and/or figure.Digital broadcast transmitting injection device in the present embodiment can be used as the radio and television emitter, for example, is applied in TV signal reflector and/or broadcast signal transmission device in campus or the factory.
With reference to Fig. 5, the system configuration of the digital broadcast transmitting injection device of another embodiment of the present invention is shown, comprise signal emission module 105, data exchange interface 102, control module 103 and comprise at least one memory module 104.Described control module 103 is connected the read or write of control storage module 104 by data exchange interface 102 with memory module 104; Memory module 104 can be connected with control module 103 by a data Fabric Interface 102 with signal receiving module 101, also can be connected with control module 103 by a data Fabric Interface 102 respectively.Described control module 103 writes data flow by data exchange interface 102 to signal emission module 105, and described signal emission module 105 becomes digital broadcast signal to launch the data stream modulates that writes.Host computer can be read and write by 103 pairs of memory modules 104 of control module.Present embodiment adopts memory module 104 to expand the function of digital broadcast transmitting injection device, makes the digital broadcast transmitting injection device can also realize the USB flash disk function when realizing the digital broadcast signal emission.
With reference to Fig. 6, the flow process of one embodiment of the invention digital broadcast transmitting method is shown, by using the digital broadcast transmitting injection device to realize the emission of digital broadcast signal, described digital broacast receiver comprises signal emission module 105, data exchange interface 102 and control module 103; Also comprise step:
Step B1, control module 103 write data flow by data exchange interface 102 to signal emission module 105; Described data flow is from host computer or memory module; Described host computer comprises computer, mobile phone or PDA etc.; Described data flow comprises voice data, video data, data, literal and/or figure;
Step B2, signal emission module 105 become digital broadcast signal to launch described data stream modulates.
In the above embodiment, described memory module is NAND FLASH.Above-mentioned control module 103 available flash memory control chips are realized; The above flash interface comprises NAND Flash interface, AG-AND Flash interface, ONFI interface, LBA Flash interface, OneNand interface or UFI interface.
The circuit diagram that receives below in conjunction with digital broadcasting shown in Figure 7 is described in detail the course of work of digital broadcast reception.
The signal receiving module of mentioning among the above embodiment 101 can adopt the DM4000-T tuner module of Shenzhen SDMC Microelectronics Co., Ltd to realize; DM4000-T tuner module receives and meets the ground digital television signal of DVB-T standard and this ground digital television signal is carried out demodulation process.Control module 103 adopts the USB flash memory control chip DM1305 of Shenzhen SDMC Microelectronics Co., Ltd, and DM4000-T tuner module is connected with DM1305 flash memory control chip by flash interface.
Below in conjunction with above-mentioned concrete chip configuration digital broacast receiver and digital broacast receiver workflow are carried out the way of output that concrete description: DM4000-T can select data flow by the method that register or other hardware adjustments are set, for example fifo mode etc.The way of output that the DM4000-T data flow is set is a fifo mode.The data wire pin of flash interface is connected with the data wire pin of DM4000-T module; When the read signal of flash interface and control signal simultaneously effectively the time, the read signal pin of flash interface can be connected by the read signal pin of a logic gates with DM4000-T tuner module with the control signal pin; The R/B of flash interface (Ready/Busy, ready/busy) pin links to each other with the Data Identification position pin of DM4000-T.Wherein, under the FIFO mode of operation, the data flow that DM4000-T tuner module is handled demodulation process stores in the FIFO memory of DM4000-T tuner inside modules, this data flow is not directly to output to DM1305 flash memory control chip, but DM1305 flash memory control chip obtains by flash interface.
DM4000-T receives radio broadcasting signal, after the demodulation process data flow is stored in the FIFO memory.After the data in the FIFO memory reach certain quantity (for example 1792 BYTES, concrete quantity can be provided with as required), useful signal will be sent in the Data Identification position of DM4000-T.After the R/B pin of flash interface receives useful signal, can produce read signal at the read signal pin.If the control signal pin of flash interface is a useful signal, then read signal is sent to DM4000-T by logic gates, and this moment, DM4000-T was sent to DM1305 flash memory control chip with the data flow in the FIFO memory by data wire according to the Flash read-write sequence.DM1305 becomes to meet host computer interface data flow transmitted with the data transaction that receives.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (2)
1. digital broacast receiver is characterized in that:
The signal receiving module that comprises first-in first-out, control module, flash interface and at least one NANDFLASH;
Described signal receiving module is with first-in first-out (FIFO) pattern receiving digital broadcast signal, and digital broadcast signal is carried out demodulation process, and the digital broadcast signal after the demodulation process is stored in the FIFO memory; Judge again whether data satisfy the output requirement in the FIFO memory, if satisfy, useful signal will be sent in the Data Identification position of signal receiving module; In addition, judge whether the data in the FIFO memory satisfy the output requirement is whether the data storage capacity of judging the FIFO memory reaches 1/4,1/2 or 3/4 of its memory capacity,, then satisfy the output requirement if reach; After the ready/busy signal end of flash interface receives useful signal, can produce read signal at the read signal end, if the control signal of flash interface is a useful signal, then read signal is sent to control module by logic gates, and described control signal comprises input/output signal; Described then signal receiving module is sent to control module with the data in its FIFO memory by data wire;
Described control module is connected with signal receiving module by flash interface, reads described digital broadcast signal and convert to meet host computer interface data flow transmitted; Described control module also is connected with NAND FLASH by flash interface, the read or write of control NAND FLASH; NAND FLASH and signal receiving module are connected with control module by same flash interface, perhaps are connected with control module by different flash interfaces separately;
The read signal of described flash interface links to each other with the read signal end of signal receiving module by logic gates with the control signal end, and the ready/busy signal end of flash interface links to each other with the Data Identification position end of signal receiving module; The read signal of flash interface produces with address cycle signal, instruction cycle signal or the general input/output signal of flash interface;
Described host computer interface comprises serial ports, SPI interface, USB interface, SATA interface, I2C bus interface and SDIO interface; Described logic gates comprises and door or door inclusive NAND door.
2. digital broadcast transmitting injection device is characterized in that:
The signal emission module, flash interface, control module and at least one NANDFLASH that comprise first-in first-out;
Described control module writes data flow by flash interface to signal emission module, and described signal emission module becomes digital broadcast signal to launch described data stream modulates with the first-in first-out pattern; Described control module also is connected with NAND FLASH by flash interface, the read or write of control NAND FLASH; NAND FLASH and signal emission module are connected with control module by same flash interface, perhaps are connected with control module by different flash interfaces separately;
The ready/busy signal end of described flash interface links to each other with the Data Identification position end of signal emission module, and the write signal end of flash interface and control signal end link to each other with the write signal end of signal emission module by logic gates; The write signal of flash interface produces with address cycle signal, instruction cycle signal or the general input/output signal of flash interface;
Described logic gates comprises and door or door inclusive NAND door; Described data flow is from host computer or NAND FLASH; Described host computer comprises computer, mobile phone or PDA; Described data flow comprises voice data, video data, literal and/or figure.
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