CN101278505A - Optical networks for consumer electronics - Google Patents

Optical networks for consumer electronics Download PDF

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Publication number
CN101278505A
CN101278505A CNA2006800363988A CN200680036398A CN101278505A CN 101278505 A CN101278505 A CN 101278505A CN A2006800363988 A CNA2006800363988 A CN A2006800363988A CN 200680036398 A CN200680036398 A CN 200680036398A CN 101278505 A CN101278505 A CN 101278505A
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signal
optical
light
digital
interface
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Chinese (zh)
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吉米·A·塔特姆
詹姆斯·K·冈特
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Finisar Corp
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Finisar Corp
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Abstract

A digital optical interface device or network 1600 for communication between digital consumer electronic devices 1620, 1640 are disclosed. A digital optical network 1600 can include an input interface 1604 configured to electrically couple to a DVI or HDMI receptacle of a source device 1640. The input interface 1604 includes an optical transmitter 1607 for converting a TMDS signal into an optical signal. An input optical fiber 1602 optically coupled to the optical transmitter 1607 receives the optical signal. A coupler 1633 is coupled to the input optical fiber 1602 and couples the optical signal with at least one of multiple output optical fibers 1601 coupled to the coupler 1633. Output interfaces 1605 each include an optical receiver 1608 for converting the optical signal back into the electrical TMDS signal. The output interfaces 1605 are configured to electrically couple the TMDS signals with respective DVI or HDMI receptacles of DVI or HDMI sink devices 1620.

Description

The optical-fiber network that is used for consumer electronics product
Technical field
The present invention relates to the communication between the digital electronic equipment for consumption.More specifically, the present invention relates generally to the video and/or audio data transmission network between the digital electronic equipment for consumption.
Background technology
Numeral consumer electronics product such as digital video display, digital video disc (DVD) reader, flat screen (flat screen) computer monitor, high definition TV (HDTV), digital plasma screen, digital audio reader, digital audio encoder, digital audio amplifier and digital audio processing device have become more and more universal.Along with data quantity transmitted between the digital assembly enlarges, to satisfy the demand to bigger resolution, size and better quality, the necessity of carrying out the high speed data transfer of numerical data also increases.Developed a plurality of standards of supporting the transfer of data of digital electronic equipment for consumption, still, many standards do not solve the high bandwidth and the high definition demand of emerging product fully.These standards also satisfy the demand that digital video and/or voice data is distributed to a plurality of places equipment from source device fully.
Two current standards implementing at the transmission of digital video and/or digital audio comprise digital visual interface (DVI) standard and HDMI (High Definition Multimedia Interface) (HDMI) standard.All (transmission minimizeddifferential signaling, TMDS), this is the high speed serialization link technology of Silicon Image company exploitation based on minimizing the transmission difference signaling for HDMI standard and DVI both criteria.
The DVI technology
DVI is the display interface device of (DDWG) being developed by " numeral shows working group ".The DVI standard can provide high-speed figure to connect between DVI digital source equipment (that is DVI digital video processing apparatus) and DVI digital sink equipment (that is DVI digital video display device).A kind of common execution mode of DVI is the interface that is used to have the computer of Video Controller card and has the numerical display device (for example, CRT, LCD, projecting apparatus) of display controller.Dvi standard and description are included in by numeral and show that working group is that the content of this publication is incorporated into this by reference and clearly in the publication of " DigitalVisual Interface, Revision 1.0 " at the title of 2 issues April in 1999.
DVI utilizes HSSI High-Speed Serial Interface and TMDS to DVI place equipment sending data.TMDS transmits data by the conversion between " on " and " off " state.Encryption algorithm uses boolean's distance (XOR) or " XNOR " (XNOR) to operate, and is used to make transition minimized, to avoid electromagnetic interference (EMI) level excessive in the DVI cable.Carry out other operation with balance DC signal.
The DVI connector has 24 stitch, can two TMDS links of outfit as many as.Basic TMDS transmission line is made of three data passages and a clock passage.In each passage in three passages (R/G/B), data comprise 8 pixels.In some cases, can use a pair of TMDS line to realize higher data rate.Except that TMDS data channel and clock passage, digital interface also comprises 5VDC power supply and hot plug sense channel.DVI-I combined digital and simulation stitch arrange that being similar to DVI-D (numeric only) interface pin arranges, still, also comprises a plurality of stitch that are used to send analog signal.
Fig. 1 illustrates from the graphics controller 120 of the DVI source device 125 such as digital video processing apparatus, through TMDS link 130, arrives the typical data stream of the display controller 135 of the DVI place equipment 140 such as digital video display device.In this process, 8 bit data of input are encoded as 10 and minimize character conversion, the DC balance.Eight is through coded data, and the 9th bit-identify data still are the XNOR logic coding with XOR; The tenth is used for the DC balance.
Because the defined property of DVI interface, the DVI cable with copper cable may be limited in the length of about 3-5 rice.This limited length has reduced the number that can utilize the potential application of DVI cable.For example, this length can't guarantee digital-video equipment is placed into position far away and is distributed to a plurality of digital-video equipments.
Typical DVI cable with copper current source road also is being restricted aspect bandwidth and the message transmission rate.The scope of DVI data rate usually from 22.5 million pixel per seconds (Mpps) to 165Mpps (being up to 1.65 gigabit/sec).Because TMDS transmits data by the conversion between " on " and " off " state, therefore, the speed that the electromagnetic interference (EMI) level in the DVI cable also can restricting data can be transmitted.
In addition, though DVI is a standard interface,, some digital video processor and digital video display device may be incompatible, perhaps can not carry out interoperability each other.So, in some environment, needs are used to reconfigure the two-way communication of digital video processor and/or digital video display device at least.Regrettably, configuration data is not transmitted usually.In addition, many DVI interfaces do not have enough connections so that data (for example, configuration data) are sent to digital video processor from digital video display device (or a plurality of digital video display device) yet.As a result, digital video processor and one or more digital video display device can be incompatible.
The HDMI technology
HDMI and the PC, display and the electronic equipment for consumption back compatible that combine the DVI standard.HDMI is based on TMDS serial link technology.The standard of HDMI technical support on single cable, that strengthen or high definition video is added channel digital audio.It is with the bandwidth for transmission ATSC HDTV standard of 5 gigabit per seconds (Gbps), and supports 8 channel digital audios.
HDMI is provided interface, is used for the Digital Television audio visual signal is sent to HDMI place equipment such as television set, projecting apparatus and other audio-visual equipment from DVD player, set-top box and other audio-visual source equipment.HDMI can transmit multichannel audio data, and can transmission standard and high definition consumer electronics product video format.Also meaningful resist technology can be used.HDMI also can transmit control and state information on both direction.
With reference to figure 2, the figure shows the HDMI block diagram, wherein, standard HDMI cable comprises four differential pair 201-204, they have constituted TMDS data and clock passage, are referred to as HDMI TMDS link 200.These data channel are used for transmission of video, audio frequency and auxiliary data.In addition, the HDMI cable also carries VESA DDC passage 205.DDC passage 205 is used for configuration and the status exchange between HDMI source 210 and the HDMI receiver 215.Optionally CEC agreement line 220 provides the Advanced Control function between all audio-visual productss in user's the environment.
Audio frequency, video and auxiliary data are transmitted on three TMDS data channel 201-203.The video pixel clock data are transmitted on TMDS clock passage 204, and are used as in the reference of three enterprising line data recovered frequency of TMDS data channel 201-203 by HDMI receiver 230.Video data transmits on three TMDS data channel 201-203 as a series of 24 pixels.By the TMDS coding, 8 in each passage is converted to 10, the sequence DC balance, that minimize conversion, then, on HDMI TMDS data channel 201-203, transmit described sequence serially with the speed of each pixel clock cycles 10 bit.The scope of video pixel speed can be from 25MHz to 165MHz.Can encode to video pixel with any in RGB, YCBCR 4:4:4 or the YCBCR 4:2:2 form.
For transmission of audio and auxiliary data on TMDS passage 201-203, HDMI uses pack arrangement.In order to realize the higher reliability of audio frequency and control data, utilize error correcting code to protect these data, and utilize special mistake to reduce and encode, 10 words that are sent out with generation.Alternatively, HDMI can be transmitting single such stream up to the sampling rate of 192kHz, or to transmit two to four such streams (3 to 8 voice-grade channels) up to the sampling rate of 96kHz.HDMI also can transmit (for example, the surround sound) stream through overcompression.DDC passage 205 is expanded display identification data (E-EDID) by the enhancement mode that HDMI source device 210 is used for reading HDMI place equipment 215, to find the configuration and/or the function of place equipment 215.HDMI source device 210 reads the E-EDID of place equipment 215, and the Voice ﹠ Video form that only provides place equipment 215 to support.In addition, HDMI place equipment 215 can detect InfoFrames, and suitably handles the Voice ﹠ Video data that receive.
The outside HDMI connection of numeral consumer devices is that the HDMI connector (Type A or Type B) by two special uses is realized.These connectors can directly be attached to equipment, perhaps also can be undertaken attached by the cord adaptor that provides with equipment.Type A connector sends all required HDMI signals, comprises single TMDS link.Type B connector is big slightly, and carries the 2nd TMDS link, and the 2nd TMDS link is to support to need the very high-resolution computer display of dual link bandwidth necessary.Passive cord adaptor between Type A and the Type B connector is special-purpose.
CEC agreement line 220 is used for more senior user function alternatively, as task being set automatically or using being associated of task with infrared remote control usually.Type A connector only carries single TMDS link, therefore, only is allowed to maximum 165Mpps ground and sends signal.For supporting signal, use the dual link function of Type B connector greater than 165Mpps.
To comprise video pixel, bag data and control data from the inlet flow of the transmitter 235 in controller 240 to the HDMI sources in HDMI source.The bag data can comprise voice data and auxiliary data, and relevant error correcting code.Handle these data item in every way, and, present to the transmitter 235 in HDMI source these data item any as in the control data of 2 in each TMDS passage, 4 packet data or 8 s' the video data.The controller 240 in HDMI source is to a kind of coding the in these data types, or in any given clock cycle boundary belt character (Guard Band character) encoded.The stream of the TMDS character that is produced by transmitter 235 is serialized, so that transmit on TMDS data channel 201-203.
These current cables and solution and other cable and solution they transmission digital video and/or the ability of audio signal aspect be restricted in many ways.For example, these digital videos and/or audio cable they can transmit the TMDS signal bandwidth and apart from aspect be restricted.A solution that solves the finite length problem of these cables is a repeater, and repeater is a kind of equipment that has again transfer function, is used to prolong or distributes digital video and/or audio signal from the cable such as DVI and HDMI cable.The circuit of repeater can compensate, balanced, amplifier digital video and/or digital audio and video signals, and these digital videos and/or digital audio and video signals are transferred in the cable of another length again.In some cases, repeater may arrive about 25 or 35 meters with digital video and/or audio signal transmission.Yet, repeater can be quite expensive, add other hardware and circuit, need other cable to prolong, in addition repeater can with digital video transmission to the quantity of distance, receiver that signal can be distributed to and/or the audio signal of cable and bandwidth aspect also relative limited.Therefore, repeater does not provide these cables the current needed solution of many problems that runs into, but attempts alleviating the limitation of these cables.
Like this, owing to these reasons and other reason, need improve the communication between digital source equipment and the digital sink equipment.
Summary of the invention
The present invention relates to a kind of network that is used for the communication between the digital consumer electronics product.A kind of digital light network has been described.Described digital light network comprises input interface, and described input interface is configured to be electrically coupled to the DVI or the HDMI socket of DVI or HDMI source device.Described input interface comprises: optical transmitting set, be configured to electricity minimize the conversion difference signaling (transition miminizeddifferential signaling, TMDS) conversion of signals is a light signal; And input optical fibre, couple light to optical transmitting set, be used for receiving optical signals.Described digital light network comprises coupler, and described coupler is configured to light signal and at least one output optical fibre that couples light in a plurality of output optical fibres of coupler are coupled.Described digital light network comprises at least two output interfaces, and described at least two output interfaces are configured to be electrically coupled to the DVI or the HDMI socket of at least two corresponding D VI or HDMI place equipment.In at least two output interfaces each all comprises optical receiver, and described optical receiver is configured to receiving optical signals, and the TMDS signal that the light signal conversion is wired back, and the TMDS signal of electricity is sent to corresponding apparatus in DVI or the HDMI place equipment.
A kind of digital light network that is used for digital video source device and a plurality of digital videos place device coupled has been described.Described digital light network comprises the input optical fibre with first end and second end.Described digital light network further comprises input interface, described input interface is configured to receive from the digital video source device vision signal of the electricity of input, described input interface comprises optical transmitting set, described optical transmitting set is configured to receive the vision signal of the electricity of input, and the vision signal of electricity is converted to the light signal of input, described optical transmitting set further be configured to will input light signal send on first end of input optical fibre.Described digital light network also comprises the coupler that is coupled to input optical fibre and at least two output optical fibres, and described coupler is configured in light signal and at least two output optical fibres at least one is coupled.Each output optical fibre all is coupled to output interface, each output interface all comprises optical receiver, described optical receiver is configured to corresponding output optical fibre receiving optical signals from least two output optical fibres, and light signal will be converted to the output convey electronic video signals, and will exports convey electronic video signals and send to corresponding apparatus in the equipment of a plurality of digital videos place.
Described and a kind ofly will import the node (nexus) that DVI or HDMI cable and at least two output DVI or HDMI cable are coupled.Described node comprises input DVI or HDMI interface, and described input DVI or HDMI interface comprise DVI or HDMI connector.Input DVI or HDMI interface are configured to receive the TMDS signal from input DVI or HDMI cable.Described node further comprises at least two output DVI or HDMI interface, and described at least two output DVI or HDMI interface comprise DVI or HDMI connector.Described at least two output DVI or HDMI interface are configured to send the TMDS signal to output DVI or HDMI cable.
By following description and appended claim, these aspects of the present invention and other aspect will become clear more fully, perhaps also can be by coming known as following practice of the present invention of setting forth.
Description of drawings
For further illustrating above-mentioned and other advantage and characteristics of the present invention, the specific embodiment of the present invention that shows in reference to the accompanying drawings provided describe more specifically of the present invention.Should be appreciated that these accompanying drawings have only been described exemplary embodiments of the present invention, therefore, should not be considered as restriction scope of the present invention.To and utilize extra feature and details to describe and illustrate the present invention by the use accompanying drawing, in the accompanying drawings:
Fig. 1 shows the typical data stream from the graphics controller in DVI source to the display controller of DVI place equipment;
Fig. 2 shows from the figure in HDMI source and Audio Controller and flows to the demonstration of HDMI receiver and the typical data of Audio Controller;
Fig. 3 shows the digital optical cable according to example embodiment of the present invention;
Fig. 4 shows the digital optical cable according to example embodiment of the present invention;
Fig. 5 shows the digital optical cable according to example embodiment of the present invention;
Fig. 6 shows the digital optical cable according to example embodiment of the present invention;
Fig. 7 shows the digital optical cable according to example embodiment of the present invention;
Fig. 8 A shows the digital optical cable according to example embodiment of the present invention;
Fig. 8 B shows the bi-directional optical equipment that is used for according to the digital optical cable of example embodiment of the present invention;
Fig. 9 shows the bi-directional optical equipment that is used for according to the digital optical cable of example embodiment of the present invention;
Figure 10 shows the bi-directional optical equipment that is used for according to the digital optical cable of example embodiment of the present invention;
Figure 11 shows the bi-directional optical equipment that is used for according to the digital optical cable of example embodiment of the present invention;
Figure 12 shows the bi-directional optical equipment that is used for according to the digital optical cable of example embodiment of the present invention;
Figure 13 shows the bi-directional optical equipment with integrated monitor photodiode that is used for according to the digital optical cable of example embodiment of the present invention;
Figure 14 A and 14B show the bi-directional optical equipment with integrated monitor photodiode that is used for according to the digital optical cable of example embodiment of the present invention;
Figure 15 shows the optical-fiber network that comprises digital source equipment that digital video and/or audio signal is distributed to a plurality of places equipment;
Figure 16 shows the optical-fiber network that is used for same digital video and/or digital audio-frequency data are distributed to a plurality of places equipment;
Figure 17 shows the optical-fiber network that is used for same digital video and/or digital audio-frequency data are distributed to a plurality of digital sink equipment;
Figure 18 shows node and is used to the embodiment of single source device coupled to a plurality of places equipment;
Figure 19 shows and be used for the optical-fiber network that communicates between source device and a plurality of places equipment;
Figure 20 shows the optical-fiber network that is used for digital video and/or light signal are distributed to from single source equipment a plurality of places equipment;
Figure 21 shows and is used for different digital videos and/or digital audio and video signals are distributed to the not network that comprises digital source equipment of chummage equipment;
Figure 22 shows and is used for different digital videos and/or audio signal are sent to the not network of chummage equipment from digital source equipment;
Figure 23 shows the optical-fiber network that is used for transmission HDMI signal between source device and a plurality of places equipment;
Figure 24 shows the optical-fiber network that is used for transmission TMDS signal between source device and a plurality of places equipment.
Embodiment
Referenced in schematic is used to realize that the structure of example embodiment of the present invention and the accompanying drawing of operation describe principle of the present invention.Utilizing drawing and description to present the present invention in this way should not be construed as limiting the scope of the invention.Other characteristics of the present invention and advantage will comprise claim and become obvious to a certain extent, perhaps, also can understand by practice of the present invention by specification.
1. illustrative digital optical cable
Please, the figure shows digital optical cable 300, thereby an example embodiment is described referring to Fig. 3.Digital optical cable 300 can comprise the optical fiber 301 with first end 302 and second end 303.First interface 304 is coupled to first end 302 of optical fiber 301, and second interface 305 is coupled to second end 303 of optical fiber 301.
As shown in Figure 3, first interface 304 of digital optical cable 300 is coupled to the digital source equipment 340 such as DVI or HDMI digital video and/or audio processing equipment.Digital source equipment 340 comprises source controller 341 and TMDS transmitter 342.Second interface 305 of digital optical cable 300 is coupled to the digital sink equipment 320 such as DVI or demonstration of HDMI digital video and/or audio output apparatus.Digital sink equipment 320 comprises TMDS receiver 322 and place controller 321.
First interface 304 of digital optical cable 300 can comprise serializer 306, and as the electronics serializer circuit, and to be used for electrical signal conversion be the device of light signal, as transmitting optics assembly (TOSA) 307.Serializer 306 can be electric serializer circuit, and it receives electric TMDS signal (quantity of TMDS signal depends on standard) from TMDS transmitter 342, and the TMDS signal is serialized into the single signal of telecommunication.TOSA 307 can comprise optical transmitting set, (for example, VCSEL), it receives electric serial data signal from serializer 306 as light-emitting diode (LED) or laser diode, and electric serial data signal is converted to the light serial data signal, so that send on the optical fiber 301.
Second interface 305 of digital optical cable 300 comprises and is used for receiving optical signals and light signal is converted to the device of the signal of telecommunication, as receiving optical module (ROSA).ROSA 308 can comprise optical receiver, and as photodiode, it receives the light serial data signal from optical fiber 301, and the light serial data signal is converted to electric serial data signal.Deserializer 309 can be electric deserializer circuits, it receives electric serial data signal from ROSA 308, and electric serial data signal separated conspire to create TMDS signal (quantity of TMDS signal will depend on standard), so that send to the TMDS receiver 322 of digital sink equipment 320.
At work, digital source equipment 340 (for example, DVD player, digital cable box or computer) is connected to first interface 304 of digital optical cable 300.Second interface 305 of digital optical cable 300 is connected to place equipment 320 (for example, Digital Television, digital audio system or data monitor).
For on digital sink equipment 320, showing digital video image or playing digital audio, the source controller 341 of digital source equipment 340 will send to TMDS transmitter 342 such as the data-signal pixel data, voice data and/or the control data, TMDS transmitter 342 is converted to data-signal the TMDS data signal format of specific criteria (for example, DVI or HDMI).TMDS transmitter 342 sends to serializer 306 with the TMDS data-signal.Serializer 306 receives the TMDS signal, and the TMDS signal is serialized as single electric serial data signal.Serializer 306 sends to TOSA 307 with electric serial data signal.TOSA 307 is converted to the light serial data signal with electric serial data signal, and the light serial data signal is sent to optical fiber 301.
The light serial data signal is received by the ROSA 308 of second interface 305, and ROSA 308 is with light serial data signal conversion telegram in reply serial data signal.ROSA 308 sends to deserializer 309 with electric serial data signal, and deserializer 309 is according to digital sink equipment 320 employed standards (for example, DVI or HDMI), with electric serial data signal a plurality of TMDS signals that unstring back.Deserializer 309 sends to the TMDS signal TMDS receiver 322 that is positioned on the digital sink equipment 320.TMDS receiver 322 is the video and/or audio data-signal with the TMDS conversion of signals, and as pixel count certificate, voice data and/or control data, and described signal is output to the place controller 321 of digital sink equipment 320.
Please referring to Fig. 4, this figure has exported the digital optical cable 400 according to another example embodiment of the present invention now.According to embodiment shown in Figure 4, first interface 404 can comprise a plurality of TOSA (or transmitting chip) 406 and wavelength division multiplexer (WDM) 407.Wavelength division multiplexing is combined into light beams of different wavelengths the single optical transmission for the treatment of by the optical fiber reception.Second interface 405 comprises Wave decomposing multiplexer (WDD) 408 and a plurality of ROSA (or receiver chip) 409.WDD 408 is a light beams of different wavelengths with multiplexing beam separation.
At work, digital source equipment 440 is connected to first interface 404 of digital optical cable 400.Second interface 405 of digital optical cable 400 is connected to digital sink equipment 420.The data-signal that the source controller 441 of source device 440 produces such as pixel data, voice data and/or control data.Data-signal is sent to TMDS transmitter 442, and TMDS transmitter 442 is converted to TMDS data signal format (meet suitable standard, for example, DVI or HDMI) with these data-signals.TMDS transmitter 442 sends to 406, one TOSA of a plurality of TOSA with the TMDS data-signal and receives each TMDS data-signal.Each comprises optical transmitting set such as laser or LED TOSA 406.Each TOSA406 launches light with the wavelength of comparing skew a little with other TOSA406.TOSA 406 is a light signal with electric TMDS conversion of signals, and described light signal is sent to WDM 407.WDM 407 receiving optical signals, and will be combined into multiplexed optical signals from the light signal (each all has different wave length) of different reflectors, and multiplexed optical signals is sent on first end 402 of optical fiber 401.
Receive multiplexed optical signals by the WDD 408 of second interface 405 from second end 403 of optical fiber 401.WDD 408 separates each wavelength that is transmitted, and the light TMDS signal guidance that will separate suitable ROSA in the ROSA 409.Each ROSA among the ROSA 409 comprises optical receiver, and this optical receiver is with light TMDS conversion of signals telegram in reply TMDS signal.ROSA 409 sends to electric TMDS signal the TMDS receiver 422 that is positioned on the place equipment 420.TMDS receiver 422 is that video shows and/or voiceband data signal with the TMDS conversion of signals, and as pixel count certificate, voice data and control data, and described data are output to the place controller 421 of place equipment 420.
Please referring to Fig. 5, the figure shows digital optical cable 500 now according to another example embodiment of the present invention.According to embodiment shown in Figure 5, digital optical cable 500 uses time division multiplexing to send the TMDS signal on the optical fiber 501 with first end 502 and second end 503.
Time division multiplexing is the digital multiplexing of deriving two or more obvious passages simultaneously by interlaced pulse from single spectrum.Therefore, the authority of visit optical transmission chain in continuous time interval of having given each channel allocation.For example, similar approach is the packet switch transmission, and this packet switch is transmitted in can advantageous particularly in the HDMI optical cable.First interface 504 comprises adaptive multiplexer (TDM) 506 and TOSA507.Second interface 505 comprises ROSA 508 and time-division demodulation multiplexer (TDD) 509.
At work, the source controller 541 of digital source equipment 540 produces data-signal (for example, pixel, audio frequency and/or control data signal).Data-signal is sent to TMDS transmitter 542, and TMDS transmitter 542 is converted to the TMDS data signal format with data-signal.TMDS transmitter 542 sends to TDM 506 with the TMDS data-signal.
TDM 506 receives the TMDS signal, and makes signal staggered, so that send to TOSA507 in order.TOSA 507 receives interleaving signal, and the electrical signal conversion that will send from TDM 507 is a light signal, and described light signal is sent to optical fiber 501.
The ROSA 508 of optical signals second interface 505 receives.ROSA 508 comprises the optical receiver of light signal being changed the telegram in reply signal and the described signal of telecommunication being sent to TDD 509.The signal of telecommunication that is sent out that TDD 509 (for example, based on field (field)) will receive is separated into the TMDS signal, and the TMDS signal that separates is sent to the TMDS receiver 522 that is arranged in digital sink equipment 520.TMDS receiver 522 is the video and/or audio data-signal with the TMDS conversion of signals, and described data-signal is output to the place controller 521 of digital sink equipment 520.
Please referring to Fig. 6, the figure shows bi-directional digital light/cable 600 now according to another example embodiment of the present invention.Digital light/cable 600 comprises the optical fiber 601 with first end 602 and second end 603, and the current source road (for example, metal wire or cable) 610 with first end 611 and second end 612.Optical fiber 601 and current source road 610 can be by plastic sheath 613 encapsulation.First interface 604 is coupled to first end 602 of optical fiber 601 and first end 611 on current source road 610.Second interface 605 is coupled to second end 603 of optical fiber 601 and second end 612 on current source road 610.
As shown in Figure 6, first interface 604 of digital light/cable 600 is coupled to digital source equipment 640, and second interface 605 of digital light/cable 600 is coupled to digital sink equipment 620.
At work,, send by TOSA 607, and receive by light/cable 600 by serializer 606 serializations from the TMDS signal of the TMDS transmitter 642 of source device 640 by ROSA 608, unstring by deserializer 609, and be sent to the TMDS receiver 622 of digital sink equipment 620.Optical fiber 601 can with above provide data from digital source equipment 640 to digital sink equipment 620 with reference to the similar mode of figure 3 described modes.
Still please referring to Fig. 6, current source road 610 is electrically coupled to the place controller 621 of place equipment 620 source controller 641 of source device 640.Current source road 610 can provide from place equipment 620 to source device 640 telecommunication going up in the opposite direction with the side that is provided by optical fiber 601 for inverse signal.Two-way communication allows source device 640 and place equipment 620 to transmit and receive data each other.Current source road 610 also can be used to provide unidirectional electrical communication or two-way telecommunication direction.For example, current source road 610 (or a plurality of current sources road) can provide telecommunication for the DDC among the HDMI embodiment (for example, referring to Fig. 2) and/or the transmission of CEC signal.According to any embodiment as described herein, DDC and/or CEC signal also can be sent out with the TMDS signal.
According to this embodiment, it may be on the best direction that optical fiber 601 can be used in bigger bandwidth and bigger transmission rate, and the TMDS signal is delivered to digital sink equipment 620 from digital source equipment 640.In the application that may not need bigger bandwidth and bigger transmission rate, current source road 610 can be used for communicated data signal on either direction.For example, current source road 610 can be used for sending sign place equipment 620 or the manufacturer of source device 640 and the information of model.Then, this information can be presented on the screen by digital source equipment 640 or digital sink equipment 620.Need relatively low bandwidth to transmit the information of sign manufacturer and model.Other low-bandwidth signal can comprise that the various of firmware or software shake hands, dispose, upgrade, or control signal.
Current source road 610 can comprise a plurality of electric wires or cable, so as between place equipment 620 and source device 640 Data transmission.For example, current source road 610 can be unshielded twisted pair cable, ribbon cable, coaxial cable or the like.
According to other embodiment, can realize wavelength division multiplexing and time division multiplexing, here so that communicate to be similar to above on any optical fiber of being discussed with reference to figure 4 and the described mode of Fig. 5.
Current source road 610 also can be between place equipment 620 and source device 640 the transportation simulator data-signal.TDM can be used at current source road 610 transmitting datas, by the packet on each direction and head and field or other being used for identifying the source of the data of wrapping payload and/or other device of purpose interweaves.
Please referring to Fig. 7, the figure shows bi-directional digital optical cable 700 now according to example embodiment of the present invention.Digital optical cable 700 comprises first optical fiber 701 with first end 702 and second end 703, and second optical fiber 710 with first end 711 and second end 712.First optical fiber 701 and second optical fiber 710 can overlap 713 encapsulation by individual plastic.First interface 704 is coupled to first end 702 of first optical fiber 701 and first end 711 of second optical fiber 710.Second interface 705 is coupled to second end 703 of first optical fiber 701 and second end 712 of second optical fiber 710.
As shown in Figure 7, first interface 704 of digital optical cable 700 is coupled to digital source equipment 740, and second interface 705 of digital optical cable 700 is coupled to digital sink equipment 720.First optical fiber 701 is used for the TMDS signal is sent to place equipment 720 from source device 740.First optical fiber 701 can provide data from source device 740 to place equipment 720 to be similar to above with reference to figure 3 described modes.
Second optical fiber 710 can be used in the opposite direction return data being sent to source device 740 from place equipment 720.Second interface 705 comprises TOSA 714, and TOSA 714 receives electric inverse signal from the place controller 721 of place equipment 720.TOSA 714 is converted to the light inverse signal with electric inverse signal, described smooth inverse signal is sent on second end 712 of second optical fiber 710.First interface 704 comprises ROSA 715, and ROSA 715 receives the light inverse signal from first end 711 of second optical fiber 710, and described smooth inverse signal is converted to electric inverse signal.ROSA 715 sends to electric inverse signal the source controller 741 of source device 740.
According to this example embodiment, first optical fiber 701 can be used for the TMDS signal is delivered to place equipment 720 from source device 740, and second optical fiber 710 can be used for Data transmission in the opposite direction.All need at both direction under the situation of bigger bandwidth and bigger transmission rate, this embodiment can advantageous particularly.Should be appreciated that, under favourable situation, among described here any embodiment, that the direction of data passes can be put upside down or two-way.
According to an example embodiment, the TOSA 707 of first interface 704 can comprise VCSEL, is used for the light serial data signal is sent to first optical fiber 701; And the TOSA714 of second interface 705 can comprise LED, is used for the back light signal is sent to second optical fiber 710.In the time can accepting lower bandwidth, LED can be used for the TOSA 714 of second interface 705.Use LED also can be more worthwhile more economically than using VCSEL.Therefore, VCSEL can be used for the path of higher bandwidth, send the path of video and/or audio data as those, and LED can be used for the path of lower bandwidth, sends the path of manufacturer, configuration and type information and/or control signal as those.
According to other embodiment, can be in Fig. 7 realize WDM and TDM on the either direction of shown embodiment, so that by communicating with reference to the described optical fiber of Figure 4 and 5 as mentioned.
Please referring to Fig. 8 A, the figure shows bi-directional digital optical cable 800 now according to example embodiment of the present invention.This digital optical cable can comprise the single optical fiber 801 with first end 802 and second end 803.First interface 804 is coupled to first end 802 of optical fiber 801, and second interface 805 is coupled to second end 803 of optical fiber 801.Shown in Fig. 8 A, first interface 804 of digital optical cable 800 is coupled to digital source equipment 840 (for example, DVI or HDMI source device), and second interface 805 of digital optical cable 800 is coupled to place equipment 820 (for example, DVI or HDMI source device).
According to the embodiment shown in Fig. 8 A, same optical fiber 801 is used for the transfer of data from source device 840 to place equipment 820, and is used for the transmission of 840 the inverse signal from place equipment 820 to source device in the opposite direction.
Each interface 804 and 805 can comprise the fiber optical transceiver 807 that is used for bidirectional optical.Transceiver can be that to be used for electrical signal conversion be the device of light signal, is again the device that is used for light signal is converted to the signal of telecommunication.Can realize a plurality of different transceiver embodiment.Fig. 8 B has described the example embodiment of transceiver 807.Transceiver 807 can comprise and is used to the ROSA 811 that sends the TOSA 810 of light signal and be used for receiving optical signals.TOSA 810 can comprise optical transmitting set (for example, laser or LED), and described optical transmitting set receives electrical data signal number, electrical data signal number is converted to the light data-signal, and data optical signal is sent on the optical fiber 801.ROSA 811 comprises optical receiver, and described optical receiver receives the light data-signals from optical fiber 801, and is electrical data signal number with this conversion of signals.Transceiver 807 may further include light circulator 812, and light circulator 812 will be that will transmit to be separated with data-signal that receive.Although illustrated and described the specific embodiment of transceiver 807,, also can use other embodiment that comprises other optical module and parts to come on digital optical cable, to send and receiving optical signals, for example, as following with reference to as described in the figure 9-14B.
According to an example embodiment, the TOSA 810 of first interface 804 can comprise VCSEL, is used for the light serial data signal is sent to optical fiber 801; And the TOSA 810 of second interface 805 can comprise LED, is used in the opposite direction the back light signal being sent to optical fiber 801.
Optical cable 800 is coupled to the source controller 841 of source device 840 with the place controller 821 of place equipment 820, so that carry out bidirectional data transfers.Optical fiber 801 can be used for the TMDS signal is delivered to digital sink equipment 820 from digital source equipment 840.Same optical fiber 801 also can be used for transmitting in the opposite direction return data.In HDMI embodiment, same optical fiber 801 also can be used for transmitting DDC and CEC signal.Under the situation of the single optical fiber of needs, this embodiment can advantageous particularly.
According to other example embodiment, can realize WDM and TDM on the either direction, so that communicate by optical fiber 801.Yet, in some cases, may be only in one direction (that is, from source device 840 to place equipment 820) need the communication of maximum speed, and optional on the opposite Return-ing direction.In the case, the TDM by single optical fiber 801 is because asymmetric message transmission rate rather than so favourable, and WDM may be more favourable.
Can be connected to optical fiber components supply electric power by the 5VDC power supply that is arranged on the standard cable (for example, DVI and HDMI cable).The electric power that is used for optical fiber components also can externally or internally be fed to optical fiber components from other external power source or internal electric source.
Utilize optical fiber between digital sink equipment and digital source equipment, to transmit the TMDS signal and/or other signal can reduce the EMI field, and the EMI field is a factor that possible limit the length of the conventional cable that utilizes copper cable transmission TMDS signal.In some cases, this can no longer need repeater.Fibre optic data transmission on long relatively distance accurately and effectively, much longer times of the distance that this long distance can be realized based on the cable transmission TMDS signal of metal than common utilization.The last fibre optic data transmission of longer distance is compared with the transmission of using wire rope, can also the more difficult influence of being disturbed.Optical fiber cable can also be thinner than wire rope, and is lighter.Optical fiber cable can also not need the conversion of digital to analogy and analog to digital.Therefore, compare with utilizing the conventional cable with brass chain road, the present invention can allow the length of numeral, video and/or audio cable to prolong, and digital video and/or acoustic component are placed into farther position, reduces hardware, makes transmission error still less.
In addition, optical fiber technology is characterised in that high bandwidth and reliable high speed data transfer.Although the general cable bandwidth based on copper can be in the scope from 22.5Mpps to 165Mpps,, the reliable optical fiber communication on single optical fiber may be able to realize than the speed faster speed based on the Digital Transmission cable of copper.As a result, compare with the digital cable based on copper, the digital optical cable that is disposed according to the present invention can help to improve bandwidth and message transmission rate.Bandwidth that improves and message transmission rate can help to use more high-resolution with more display pixels or bigger display again.
Embodiments of the invention can comprise TOSA, and described TOSA comprises optical package (for example, TO-Can encapsulation), have optical transmitting set and (for example, VCSEL), monitor photodiode and laser driver, be used for light signal is sent to optical fiber in optical package.In optical transmitting set, monitor photodiode and the laser driver any one can be separated components, also can make according to common extension design.According to an embodiment, laser driver can be the modulated laser driver, is used for providing modulation current source to laser.Can be from the source of TOSA outside, as the 5VDC power supply that is arranged on the standard cable connects, and provides bias current sources to laser.Quoted in embodiment as described above under the situation of TOSA, the part that described optical package can be used as first interface and/or second interface is integrated.
Here the cable of the network of being discussed is a closed loop, and optics is included under the situation in described cable or the network, also can comprise the laser driver of simplification, so that drive optics.
2. the illustrative bi-directional optical equipment that is used for optical cable and optical-fiber network
The embodiment that realizes bidirectional optical can comprise various transceiver design.Please once more referring to Fig. 8 A, transceiver 807 can comprise various different subassemblies, assembly and the configuration that is used for by single optical fiber transmission and receiving optical signals.For example, please referring to Fig. 9, the figure shows reversible optical assembly 910 according to example embodiment of the present invention.Reversible optical assembly 910 can replace the transceiver embodiment shown in Fig. 8 B to be used to be used for the bidirectional optical by optical fiber 801 in the digital optical cable of Fig. 8 A.
Fig. 9 is the basic diagrammatic sketch of bidirectional multi-frequency band optical module 910.Can be sent the light 911 of first wavelength by light source 917, light 911 can be reflected at point 915 and 914, and goes out from light mouth 913.Light source 917 can be the VCSEL of output light 911, can modulate light 911 with signal of communication or the like with a kind of form or another kind of form.These functions can utilize the electronic module 966 in the source of being connected to 917 to realize.Source 917 can be the another kind of equipment that is applicable to the application of described assembly.Except that first wavelength, light 911 also can have can be by other wavelength of filter or mirror filtration.Point 915 and 914 is positions that light is reflected, and can be positioned on the mirror, and mirror is the discrete parts or the integrated component of structure 916, as interior reflective surface in this structure or reflecting filter.Point 914 can be the position of filter 918 reflection specific wavelengths.Filter 918 can allow light 919 to pass it to light mouth 923.Light 912 can advance light inlet 913, and passes wavelength filter 918.Filter 918 can be the dichroic filter of the one or more wavelength of reflection and other wavelength of transmission.Filter 918 can be designed as the light 919 that makes second wavelength to be passed through.Other wavelength of all of light 912 can not pass through filter 918 transmissions.The light 919 of second wavelength can be detected by detector 921, and is converted into the signal of telecommunication.Can modulate light 919.Detector 921 can carry out demodulation to such light with electronic module 967.Detector 921 can be the another kind of equipment of photodetector or the application that is applicable to described assembly.Can send simultaneously and receiving optical signals by equipment 910.On the other hand, parts 917 and 921 can all be detector or source, and simultaneously receive or send various signals respectively with the light of different wave length or with the light of identical wavelength.
Source 917 and detector 921 can be encapsulated in the standard TO-can (for example, TO-5 or TO-18) as optics.For the small-sized factor hot-swappable (SFP) module, these parts can be electronically and are had interface to Standard PC B in the mode of encapsulation.These parts also can have the encapsulation of other form.Alternatively, source 917 and detector 921 can be the building blocks of structure 916.The lens 922 and 923 that are respectively applied for light source 917 and detector 921 can be molded plastic parts.These lens also can be the parts that are integrated in the structure 916, perhaps are molded the part as this structure.Instead, lens 922 and 923 can be the parts of TO-can parts 917 and 921, perhaps are positioned on laser and the detector chip or integrally as the part of laser and detector chip.The lens 924 that are arranged in light mouth 913 places can focus on incident light mirror, filter or the detector of structure 916.It also can focus on emergent light on fiber waveguide such as the optical fiber at light mouth 913 places.Lens 924 can have and lens 922 and 923 identical architectural characteristics.Lens 922,923 and 924 also can be used for light is calibrated.
Structure 916 can be by material such as Ultem
Figure A20068003639800221
The molded plastic part of making, perhaps it can be casting metal parts or other metal shell.Structure 916 also can be by the composite material manufacturing.TO-can optical module 917 and 921 can utilize epoxy resin or laser welding mode to attach in plastics or the metal structure 916.These parts are that tolerance is aimed at.Becket can be attached to plastic construction 916, so that metal parts is laser-welded to plastic construction 916.Dichroic filter 918 or mirror can be placed in the molded recesses that form in plastics or the metal structure 916 and it is bonding in place, also can be by pressure with dichroic filter 918 or mirror inserts and make it in place.Molded indentation in the structure 916 can provide the suitable aligning to dichroic filter 918.Alternatively, structure 916 can be made up of two members that are bonded together, and can be placed with dichroic reflector in the described member one or boths' the surface.
Figure 10 illustrates a kind of bi-directional optical equipment 1030, and it has a plurality of opticses, as detector or source, or the mixture in detector and source.The quantity of optics is arbitrarily, and can be determined by the application of equipment 1030 or the standard of digital optical cable (for example, the quantity of the communication link in DVI or the HDMI standard).Equipment 1030 demonstrates five opticses 1041,1042,1043,1044 and 1045, as the illustrated examples of structure 1035.Light 1036 can arrive by light mouth 1013, and light 1037 can leave light mouth 1013.The light 1036 that receives can have a plurality of wavelength (for example, each wavelength is represented a TMDS signal), and each wavelength has the signal of communication that is different from other wavelength.Similarly, the light 1037 of transmission can have a plurality of wavelength (for example, representing TMDS or other signal), and each wavelength has the signal of communication that is different from other wavelength.Light 1036 and light 1037 can propagate into optics 1041,1042,1043,1044 and 1045 and spread out of from optics 1041,1042,1043,1044 and 1045 by optical facilities 1038.Mechanism 1038 can be fiber waveguide, optical fiber, a series of mirror or in order to finish light 1036 and 1037 to optical module with from the other products of the propagation of optical module.Perhaps, also can not use mechanism 1038.Lens 1024 and 1068 can be used for suitably light being focused on or calibrating.These lens can be the parts of structure 1035.Go to or can pass filter, for example, pass filter 1046,1047,1048,1049 and 1050 respectively from the light 1036 and the light 1037 of optics 1041,1042,1043,1044 and 1045.In other words, if each optics all has the wavelength that is different from other optics, the filter with this wavelength of corresponding part relation can be arranged then.For example, optics 1041 can send or receive the light signal (for example, a TMDS signal) of first wavelength or bandwidth; Optics 1042 can send or receive the light signal (for example, the 2nd TMDS signal) of second wavelength or bandwidth; Optics 1043 can send or receive the light signal (for example, the 3rd TMDS signal) of three-wavelength or bandwidth; Optics 1044 can send or receive the light signal (for example, the 4th TMDS signal) of the 4th wavelength or bandwidth; And optics 1045 can send or receive the light signal (for example, the 5th TMDS signal) of the 5th wavelength or bandwidth.Similarly, filter 1046 can transmission only first wavelength or bandwidth light signal or make first wavelength only or the light signal of bandwidth passes through; Filter 1046 can transmission the light of second wavelength or bandwidth only; Filter 1048 can transmission the light of three-wavelength or bandwidth only; Filter 1049 can transmission the light of the 4th wavelength or bandwidth only; And filter 1050 can transmission the light of the 5th wavelength or bandwidth only.All opticses 1041,1042,1043,1044 and 1045 can send light signal 1037 and/or receiving optical signals 1036 simultaneously.
Filter 1046,1047,1048,1049 and 1050 can replace with for example dichroic reflector or other wavelength or bandwidth differentiation mechanism.Utilize such replacement, can adjust Optical devices, so that to optics 1041,1042,1043,1044 and 1045 propagating optical signals 1036 and 1037 and from optics 1041,1042,1043,1044 and 1045 propagating optical signals 1036 and 1037.Structure 1035 can be by molded plastics (for example, Ultem
Figure A20068003639800231
), metal, composite material or other suitable made.
Figure 11 is the cross-sectional side view according to illustrative optical transceiver of the present invention.Described illustrative optical transceiver is shown generally with 1140, described illustrative optical transceiver comprises the photodetector 1142 that is positioned on the optical transmitting set 1144, and both aim at along common optical axis 1146.Photodetector 1142 preferably absorbs first wavelength and/or first wave-length coverage, and second wavelength and/or second wave-length coverage are passed through.Optical transmitting set 1144 is preferably launched second wavelength and/or second wave-length coverage, and the wavelength of this wavelength and/or this scope passes photodetector 1142, and goes out from the top of optical transceiver 1140.In this illustrative embodiment, incident beam and outgoing beam all pass the top of optical transceiver 1140.
Though can use any suitable optical transmitting set 1144 by any made in the multiple semi-conducting material, but optical transmitting set 1144 as shown in figure 11 is vertical cavity surface emitting lasers (VSCEL) of GaAs/AlGaAs top-emission of the electric current guiding on plane.Described illustrative VCSEL 1144 forms on GaAs (GaAs) substrate 1148 that n mixes, and n contact layer 1150 is provided on the basal surface of substrate 1148.On substrate 1148, form n type mirror and pile up 1152.N type mirror piles up 1152 preferably distributed Bragg speculums (DBR), and it comprises having the periodic doped with Al GaAs layer that replaces higher and lower aluminium content.Pile up 1152 top at n type mirror active area 1154 is shown.Active area 1154 preferably has a plurality of quantum well, but as required, also can be any suitable active area.In addition, active area 1154 can comprise bottom limiting layer and top limiting layer.Provide p type mirror to pile up 1160 at the top of active area 1154, to finish vcsel structure.P type mirror piles up 1160 preferably distributed Bragg speculums (DBR), and it comprises having the periodic doped with Al GaAs layer that replaces higher and lower aluminium content.N type mirror piles up 1152, active area 1154 and p type mirror pile up 1160 and preferably be configured to produce the outgoing beam with second wavelength and/or second wave-length coverage.
Provide photodetector 1142 at the top of VCSEL 1144.Illustrative photodetector 1142 comprises three photodiodes that are connected in series, and these photodiodes also are connected in series with VCSEL 1144.Can provide heavy p doping resilient coating 1164 at the top of top mirror 1160, as shown in the figure.
For forming first photodiode, on heavy p doping resilient coating 1164, provide p doped layer 1166, follow by n doped layer 1168.P doped layer 1166 and n doped layer 1168 can be AlGaAs.Preferably regulate the content of Al, to adjust the band gap of layer, realize required absorption cut-off wavelength, in this illustrative embodiment, described absorption cut-off wavelength is lower than the emission wavelength of VCSEL 1144.
Back-biased tunnel junction 1170 is coupled to first photodiode.But tunnel junction 1170 comprises two highly doped adjacent layers that mix on the contrary, and to produce abrupt junction, this abrupt junction produces narrow exhausting, even also allows sizable tunnelling current under relatively low reverse biased.In this illustrative embodiment, the bottom of tunnel junction 1170 is n types, and top layer is the p type.The n doped layer 1168 of the n type bottom and first photodiode well electrically contacts, and the p doped layer 1172 of the p type top layer and second photodiode (comprising p doped layer 1172 and n doped layer 1174) well electrically contacts.
In case formed tunnel junction 1170, p doped layer 1172 just is provided, follow by n doped layer 1174, to form second photodiode.Tunnel junction 1170 carries out being connected in series between first photodiode and second photodiode.Be similar to first photodiode, p doped layer 1172 and n doped layer 1174 can be AlGaAs.Preferably regulate the content of Al, to adjust the band gap of layer, realize the cut-off wavelength identical with first photodiode, still, this is not all to need in all embodiments.Then, forming another tunnel junction 1176, next is p doped layer 1178 and n doped layer 1180, to form the 3rd photodiode.
In use, provide incident beam 1184 to the top of optical transceiver 1140 with first wavelength and/or first wave-length coverage.In first, second and the 3rd photodiode each preferably is adjusted at least a portion of the incident beam 1184 that absorbs first wavelength and/or first wave-length coverage.The p type mirror of VCSEL piles up 1160 and preferably has reflectivity at least in part in first wavelength and/or first wave-length coverage.Therefore, at least a portion in the light that is absorbed by first, second and the 3rd photodiode will not be reflected by photodiode, as shown in 1186.The thickness of first, second and the 3rd photodiode is regulated such that preferably each photodiode all absorbs roughly the same energy from incident beam 1184 and 1186.In one embodiment, first, second, and the thickness of the 3rd photodiode is respectively about 0.30,0.27 and 0.23 micron, is used to absorb 808 microns wavelength.Contact layer 1182 can be provided, and the n layer 1180 of itself and the 3rd photodiode electrically contacts.Also can provide one or more quarter-wave oxides or nitride layer (not shown), reflect, and help protection optical transceiver 1140 to reduce at the top of structure 1140.
In an illustrative embodiment, for helping to limit the current aperture (currentaperture) of VCSEL 1144, can etching one or more groove 1196a-1196d by first, second and the 3rd photodiode, and the top p type mirror that these grooves can be etched in certain embodiments, VCSEL1144 piles up in 1160.This can utilize active-ion-etch, and (Reactive IonEtch RIE) realizes, still, also can use any suitable patterning method.For helping optionally lateral oxidation, piling up 1160 one or more periodic layer to the top of VCSEL 1144 p type DBR mirror provides higher Al concentration with respect to other periodic layer.When being exposed to oxidation environment by one or more groove 1196a-1196d, layer 1190 is in the horizontal by optionally oxidation, with the current aperture 1192 that is formed for VCSEL 1144.Can control the degree of lateral oxidation by the open-assembly time of 1190 pairs of oxidation environments of key-course.As can be seen, open-assembly time preferably is controlled such that and keeps required current aperture 1192.In one embodiment, the current aperture 1192 of VCSEL 1144 has the diameter of about 5-10 micron.
In this illustrative embodiment, the lateral dimension of first, second and the 3rd photodiode is greater than the lateral dimension in the hole 1192 of VCSEL 1144.In this illustrative embodiment, the lateral dimension of first, second and the 3rd photodiode can be approximately the 100-200 micron, and the lateral dimension of the optical cavity of VCSEL1144 can be approximately the 5-10 micron.When the optical fiber that for example has 100 microns diameter was placed on the optical transceiver 1140, the lateral dimension of first, second and the 3rd photodiode can be wide fully, absorbing a large amount of incident beams, and need not lens or other collective optics.In addition, optical fiber can be not difficult with aiming at of first, second and the 3rd photodiode or be not crucial.Equally, because the hole 1192 of VCSEL 1144 is smaller with respect to the diameter of optical fiber, much all will be caught in the outgoing beam 1193 that is produced by VCSEL 1144, and need not lens or other collective optics by optical fiber.Therefore, can provide efficiently and economical optical transceiver 1140.
In certain embodiments, it is wide that the degree of depth of groove 1196a-1196d can have only about 1-2 micron.Then, can be at the top of structure 1140 depositing metal layers, to fill some in these grooves at least, such as groove 1196a and 1196d, to be electrically connected with the top mirror 1160 of VCSEL 1144.For each intermediate layer that prevents metal level and photodetector 1142 electrically contacts, can be by those grooves of filling at first along arranging as 1195a among the figure and the dielectric layer shown in the 1195d with metal level.Further describe as following, when the whole electromotive force that first, second that will be connected in series when needs and the 3rd photodiode are produced was provided to miscellaneous equipment or structure, these electrical connections came in handy.
Figure 12 is the top view of the illustrative optical transceiver of Figure 11.Figure 12 shows the top of photodetector 1142, comprises the lateral extent of layer 1190 the lateral oxidation of groove 1196a-1196d and VCSEL 1144.Also show and be used for the Metal Contact 1104 that the top with photodetector 1142 electrically contacts.The external boundary of illustrative photodetector 1142 is limited by outer channel, and it illustrates jointly with 1196a and 1196d.Outer channel helps photodetector 1142 and other photodetector or the device that form on same substrate are isolated.Outer channel also helps to make the total capacitance of photodetector 1142 to keep lower level.Illustrative outer channel 1196a and 1196d are annular, but also can use other shape.Internal channel by the common expression of 1196b, 1196c also is annular, and inwardly and outer channel spaced apart.If desired, internal channel can be filled with oxide or other dielectric.
In the illustrative embodiment of Figure 12, internal channel 1196b and 1196c comprise one or more bridges, as bridge 1110a-1110d.Bridge 1110a-1110d provide photodetector 1142 being electrically connected part internal channel 1196b and 1196c and outer channel 1196a and 1196d between between of the part within internal channel 1196b and the 1196c with photodetector 1140.When being provided like this, Metal Contact 1104 can be only on the part between internal channel 1196b and 1196c and outer channel 1196a and the 1196d, the extending of photodetector 1142, and be electrically connected with this part.If bridge 1110a-1110d is not provided, then can strides internal channel 1196b and 1196c metal trace is provided, to be electrically connected (if desired) with the part that is positioned within internal channel 1196b and the 1196c of photodetector 1142.As can be seen, photodetector 1142 can cover the zone bigger than the hole 1192 of VCSEL 1144.When outer channel 1196a and 1196d and internal channel 1196b and 1196c were exposed to oxidation environment, layer 1190 (referring to Figure 11) of oxidation VCSEL 1144 optionally in the horizontal were to form electric current or unthreaded hole 1192.By a dotted line 1102 and solid line 1108 show the degree of lateral oxidation.In shown embodiment, from the outer channel to the dotted line 1102 outwards and from outer channel towards internal channel the layer 1190 of oxidation VCSEL 1144 upcountry.Equally, from internal channel towards outer channel outwards and from the internal channel to the dotted line 1108 layers 1190 of oxidation VCSEL 1144 upcountry.Dotted line 1108 has been described the profile of the current aperture 1192 of VCSEL 1144.In one embodiment, current aperture 1192 has the diameter of about 5-10 micron, and it produces the VCSEL reflector of lower-wattage.
In certain embodiments, internal channel and outer channel can be filled with oxide or other isolated material.In other embodiments, metal level (among Figure 12 show) can deposit at least a portion of some grooves (as internal channel and/or outer channel 1196a-1196d), with the electrical connection of the top mirror 1160 that proceeds to VCSEL 1144.When metal level is provided, dielectric layer can at first be provided, electrically contact with the various intermediate layers that help prevent metal level and photodetector 1142.Further describe as following, when needs can be utilized the whole electromotive force that is produced by first, second and the 3rd photodiode that are connected in series by miscellaneous equipment or structure, this electrical connection came in handy.In a similar fashion, in certain embodiments, suitable groove and Metal Contact can be provided, so as all three electrically contact on top surface available respectively, thereby realize that the flip-chip that for example arrive opaque or transparent substrates welds (flip-chip bonding).
Here any one in the shown embodiments of the invention can comprise integrally formed laser diode and photodiode.In such embodiment, laser diode is connected by tunnel junction with photodiode, so that can use single power supply to be laser diode and photodiode power supply.Form suitable contact, to allow to be linked into the various knots of laser diode, tunnel junction and photodiode.
Please referring to Figure 13, the figure shows the example of opto-electronic device now, described opto-electronic device comprises epitaxial structure 1300, and this epitaxial structure 1300 has comprised the layer that forms on wafer substrates.In one embodiment, use the GaAs wafer to form structure 1300.Yet, also can use other III-V (three-five) semiconductor combinations.Figure 13 shows VCSEL 1301.VCSEL 1301 in the shown example comprises top mirror 1302, active area 1304 and bottom mirror 1306.There is p-n junction in the active area 1304.Under bottom mirror 1306, form spacer layer 1311.
Preferably about 5 λ of spacer layer 1311/4 or 7 λ/4, wherein, λ is the light wavelength that VCSEL 1301 is designed to send.Spacer layer 1311 can be wavelength any odd-multiple (promptly
Figure A20068003639800271
N is an integer), it is thick in be enough to offset the heterogeneity that may take place in each layer of epitaxial structure 1300.Spacer layer 1311 must be enough thick, and when with box lunch spacer layer 1311 being carried out etching, the darkest heterogeneity can not pass completely through spacer layer 1311, and the most shallow part arrival interval thing layer 1311.Therefore, target is to expose spacer layer 1311, and can not pass completely through spacer layer 1311 in any point.Processing subsequently uses the selective etch agent to expose the layer that is positioned under the sept equably such as diluted hydrofluoric acid.
Epitaxial structure 1300 further is included in tunnel junction 1308 that form and that be electrically connected to VCSEL 1301 on the VCSEL 1301.Tunnel junction 1308 comprises heavily doped n+ layer 1310 and heavily doped p+ layer 1312.
Epitaxial structure 1300 further is included in photodiode that form and that be electrically connected to tunnel junction 1308 on the tunnel junction 1308, and described photodiode comprises second p-n junction that is made of the heavily doped p+ layer 1312 of tunnel junction 1308 and lightly doped photodiode n type layer 1314.Also can make other between p+ layer 1312 and photodiode n type layer 1314 is not heavily doped p type layer (not shown).In one embodiment, structure epitaxial structure 1300 on n type substrate 1316.Though substrate 1316 shown among Figure 13 is thin layers, but, in fact in one embodiment of the invention, this substrate reaches the hundreds of micron, and comprises that the epitaxial structure 1300 of photodiode 1318, tunnel junction 1308 and laser diode 1301 approximately is 10 microns.Usually utilize metal organic chemical vapor deposition (MOCVD) technology to form epitaxial structure 1300.
Top mirror 1302 is distributed Bragg reflectors (DBR), and it generally includes a plurality of alternating layers with high and low-refraction.This generation has the speculum of about 99.5% high reflectance.In shown example, top mirror is made of such as carbon dope aluminum gallium arsenide (AlGaAs) p section bar material, and wherein, the content of Al can change between 0% to 100%.Top mirror 1302 comprises about 20 mirror cycles, and wherein, each cycle all comprises high refractive index layer and low-index layer.
Active area 1304 comprises many quantum well, is used for the emission of exciting laser energy.In shown embodiment, active area 1304 is less than 1 micron.Under active area is bottom mirror 1306.Bottom mirror was made up of about 30 to 35 Doped n-type mirror cycles.Silicon is an example of the dopant that can use in bottom mirror.
As previously mentioned, tunnel junction 1308 comprises heavily doped n+ layer 1310 and heavily doped p+ layer 1312.For realizing heavy doping, may need to create superlattice structure.For example, may need to comprise that two layers of GaAs and InGaAs (for example, a plurality of alternating layers) adjust band gap and doping characteristic, improving tunnel junction 1308, rather than only comprise the GaAs layer.Also need tunnel junction 1308 transparent a little, so that allow luminous energy to pass to arrive photodiode layer 1314.In one embodiment, this realizes by improve mixing on heavily doped n+ layer 1310, enhances the transparency so that be offset by so-called Burstein.
Advantageously the thickness of balance weight doped p+layer 1312 makes to have suitable conductivity in tunnel junction 1308, keeps suitable transparency simultaneously.Therefore, in one embodiment of the invention, heavily doped p+ layer 1312 is about 50 to 100 nanometers, and 3x10 at least preferably 19P section bar material (for example, when in the 850nm laser, using).Heavily doped n+ layer 1310 can be almost any thickness that gears to actual circumstances that can not bring the loss of light.
Under tunnel junction 1308 is photodiode 1318.Photodiode 1318 should be configured to that incident light is had appropriate responsive.Therefore, in one embodiment of the invention, photodiode 1318 comprises lightly doped n type layer 1314, and when VCSEL 1301 was designed to send 850 nano wave lengths, described lightly doped n type layer 1314 roughly was 3 microns or littler.One embodiment of the present of invention comprise about 1.5 microns lightly doped n type layer 1314.It should be noted that the thickness of lightly doped n type layer 1314 can be used for adjusting the response and the speed of photodiode.
Please referring to Figure 14 A, the figure shows the embodiment that forms contact and oxide skin(coating) by photoetching process now.On the signal that the formation of contact allows suitable biasing to be applied to treat to read from VCSEL 1301 and photodiode 1318.Photoetching process comprises a series of operations that apply photoresist to epitaxial structure 1300.Then, described photoresist becomes various patterns with photolithographicallexposed exposed.Photolithographic exposure allows the pattern of photoresist to be retained on the epitaxial structure 1300, and the remainder of photoresist can be from epitaxial structure 1300 flush awaies.
The pattern that is retained in the photoresist on the epitaxial structure 1300 stops ion to be injected into epitaxial structure 1300, stops metal to be deposited on the epitaxial structure 1300, and stops etching solution etching part epitaxial structure 1300.Therefore,, comprise that the overall structure 1400 of VCSEL 1301, tunnel junction 1308 and photodiode 1318 can be configured to have suitable contact by utilizing suitable photoetching process, and with wafer on positive other simultaneously manufactured device isolation.
In the example shown in Figure 14 A, form tunnel junction contact 1422, make it be connected to heavily doped p+ layer 1312.Form VCSEL contact 1424, make it be connected to the top mirror 1302 of VCSEL 1301.Can form another contact in the bottom of substrate 1316, to provide suitable contact to photodiode 1318.Form isolation barrier 1426, with other device isolation with VCSEL 1301 and photodiode 1318 and formation on substrate 1316.Hole 1428 is oxidized in the top mirror 1302.Hole 1428 is mainly used in guide current by VCSEL 1301.
More specifically, opto-electronic device 1400 is made from epitaxial structure 1300.The dielectric of growth such as silicon dioxide or silicon nitride on epitaxial structure 1300 is to form the part of dielectric layer 1430.Use shallow trench mask to utilize etching technics to remove partial oxide.Use etch process in VCSEL 1301, to form shallow trench 1432.Then, hole 1428 can be oxidized among the VCSEL1301.
Then, can use the deep trench mask to come etching deep groove 1434.Can use etching to etch into thick AlAs sept 1311 always.This sept can be AlAs or another kind of AlGaAs synthetic, as long as the content of aluminium is significantly greater than the content of the aluminium in the underlying bed.Can use and stop etching etching to pass AlAs sept 1311 up to n+ layer 1310.Can use another etching to come etching to pass n+ layer 1310 up to p+ layer 1312.At this moment, the other oxide of can growing, described oxide forms the other part of dielectric layer 1430.Remove the part of dielectric layer 1430, next plated metal is to form contact 1422,1424 on opto-electronic device 1400.
Figure 14 B illustrates optoelectronic device structure and the top view that contacts.Figure 14 B shows tunnel junction contact 1422 and contacts 1424 layout with VCSEL.Although show individual tunnel knot contact 1422,, in other embodiments, also can contact 1422 opposite and form other tunnel junction contact, to provide other wire-bonded to select when the packaging optoelectronic device architecture at tunnel junction.
3. the illustrative optical-fiber network that is used for consumer electronics product
Optical-fiber network according to example embodiment can be distributed to a plurality of places equipment from source device with digital video and/or digital audio.Optical-fiber network can be distributed to different place equipment with different digital videos and/or digital audio-frequency data, and perhaps, optical-fiber network also can be distributed to different place equipment with identical digital video and/or digital audio-frequency data.
For example, please referring to Figure 15, this illustrates an optical-fiber network, comprises the digital source equipment 1500 that digital video and/or audio signal (data A) is distributed to a plurality of places equipment 1505 (receiving equipment A-N).In this embodiment, identical data (data A) are distributed to a plurality of places equipment 1505.Data A can be for example according to the digital video and/or the digital audio-frequency data of DVI standard or HDMI standard.Data A also can comprise the inverse signal such as control, state and/or DOC data according to the HDMI standard.Data A can not have the inverse signal on the rightabout 1500 transmitting to the single direction of a plurality of receivers 1505 from the source yet.Shown optical-fiber network can comprise the transmission of electric TMDS signal among Figure 15, and electric TMDS signal can be converted at least one light signal, so that be sent to a plurality of receiving equipments 1505.At least one light signal can be separated by a plurality of receiving equipments 1505 as shown in figure 15 or reproduce and receive.That separate or the light signal that reproduces is can be in " downstream " further separated or reproduce, and is distributed to other place, so that each place all receives the copy of data A.
Need be under the environment of the output that shows source device 1500 on a plurality of places equipment 1505, can advantageous particularly according to the optical-fiber network of embodiment shown among Figure 15.For example, show in the retail business of the digital audio that digital video and output can be heard, may need to make individual digit video and audio source device (for example, DVD player) that identical HDMI signal is provided to described a plurality of digital television in a plurality of Digital Television.In this way, the consumer can watch simultaneously on a plurality of television sets identical video data with hear identical voice data, and between different television sets, compare.Therefore, by realizing the optical-fiber network of basis embodiment as shown in figure 15, can allow while display video data and/or voice data on the equipment of a plurality of places.
Please referring to Figure 16, the figure shows optical-fiber network 1600, it is used for identical digital video and/or digital audio-frequency data are distributed to a plurality of places equipment 1620.Optical-fiber network 1600 can realize that described optical cable has a plurality of output interfaces 1605 that are used for being coupled to the single input interface 1604 of single source equipment 1640 electronically and are used for optical-fiber network 1600 is coupled to electronically a plurality of digital sink equipment 1620 by optical cable.Input cable interface 1604 can be coupled to input optical fibre 1602.Input optical fibre 1602 can be coupled to a plurality of output optical fibres 1601 by coupler 1633.Coupler 1633 can be a fiber coupler, being used for will be from each to a plurality of output optical fibres 1601 of the separate optical signals of input optical fibre 1602, and/or the light signal that is used for sending in the opposite direction is coupled to input optical fibre 1602 from output optical fibre 1601.In this way, digital video and/or the digital audio from 1640 outputs of digital source equipment can show and/or output audibly at a plurality of digital sink equipment 1620 simultaneously.
Optical-fiber network 1600 can be the bi-directional digital optical-fiber network.As shown in figure 16, the input interface 1604 of digital light network 1600 is coupled to digital source equipment 1640 (for example, DVI or HDMI source device), and the output interface 1605 of digital light network 1600 is coupled to a plurality of places equipment 1620 (for example, DVI or HDMI place equipment).According to embodiment shown in Figure 16, input optical fibre 1602 and output optical fibre 1601 are used for the transfer of data from source device 1640 to place equipment 1620, and are used for 1640 the inverse signal transmission from place equipment 1620 to source device in the opposite direction.
Each interface 1604 and 1605 can comprise fiber optical transceiver 1607 and 1608 respectively, so that carry out bidirectional optical.Transceiver can be that to be used for electrical signal conversion be the device of light signal, is again the device that is used for light signal is converted to the signal of telecommunication.In unidirectional embodiment, transceiver 1607 and 1608 will be only at single direction upconverted signal.As discussed, can realize a plurality of different transceiver embodiment.Any embodiment that comprises optical module and optics discussed herein can comprise the embodiment that is used to send and/or receive the light data that is above discussed with reference to figure 8A-14B.
Optical-fiber network 1600 can be used for the TMDS signal is sent to digital sink equipment 1620 from digital source equipment 1640.Optical-fiber network 1600 also can be used for transmitting in the opposite direction return data.In HDMI embodiment, optical-fiber network 1600 can be used at transmission DDC of the direction from digital sink equipment to digital source equipment and CEC signal.
At work, control and digital video and/or digital audio and video signals are sent to TMDS transmitter 1642 in the digital source equipment 1640 from source controller 1641.TMDS transmitter 1642 receives control and digital video and/or digital audio and video signals, and according to suitable standard (for example, as described DVI of reference Fig. 1 and 2 or HDMI standard) control and digital video and/or digital audio and video signals is converted to the TMDS signal.The TMDS signal is received by serializer 1606, and this serializer 1606 is serialized as serial electric signal with the TMDS signal.Serial electric signal is received by input transceiver 1607, and input transceiver 1607 is converted to serial optical signal with serial electric signal, and serial optical signal is sent to input optical fibre 1602.Optical coupler 1633 receives serial optical signal, and serial optical signal is separated into the dual serial light signal, and serial optical signal is by a reception in two output optical fibres 1601.Transceiver 1608 in each output interface 1605 all receives the light signal that separates from optical coupler 1633.Transceiver is converted to serial electric signal with the light signal that separates, and serial electric signal is sent to corresponding deserializer 1609.Deserializer 1609 is with the light signal that the separates TMDS signal that unstrings back.The TMDS signal is received by the TMDS receiver in each place equipment 1,620 1622.TMDS receiver 1622 returns the TMDS conversion of signals to control and digital video and/or voice data, and control and digital video and/or digital audio-frequency data are sent to place controller 1621.Place equipment 1620 can be the place equipment of identical or different type.
In bilateral network embodiment, inverse signal can be in that 1640 direction be transmitted from place equipment 1620 to source device.At work, place equipment 1620 sends to transceiver 1608 in the output interface 1605 with electric inverse signal (or a plurality of inverse signal).Transceiver 1608 in the output interface 1605 is converted to the light inverse signal with electric inverse signal, and the light inverse signal is sent to output optical fibre 1601.Coupler 1633 receives inverse signal from output optical fibre, and by input optical fibre 1602 the back light signal is sent to input interface 1604.Transceiver 1607 in the input interface 1604 receives the light inverse signal, and the light inverse signal is converted to electric inverse signal.Then, electric inverse signal is sent to source controller 1641 by the transceiver 1607 in cable interface 1604.
The light inverse signal that transceiver 1608 in the output interface 1605 can be configured to launch different wave length, when being made up by coupler 1633 with box lunch, the light inverse signal combines, to produce multiplexing light inverse signal.In this way, the light inverse signal can be sent to transceiver 1607 in the input interface 1604 simultaneously by input optical fibre 1602.Transceiver 1607 in the input interface 1604 can comprise filter and/or receiver, be used for separating described smooth inverse signal, and be used for electric inverse signal is sent to source controller 1641 individually or is sent to source controller 1641 with the indication from the place equipment 1620 of wherein initiating the back light signal based on the wavelength of light inverse signal.Therefore, source controller 1641 can receive the back light signal, and discerns from wherein initiating the place equipment 1620 of back light signal based on the wavelength of the back light signal that is transmitted.
According to other example embodiment, can realize WDM, PDM and TDM by on optical fiber 1601 and any one direction of communicating by letter of 1602.Yet, in some cases, may be only in one direction (for example, from source device 1640 to place equipment 1620) need the communication of maximum speed, and optional on opposite Return-ing direction.
Can be connected to the optical fiber components power supply by the 5VDC power supply that is arranged on the standard cable (for example, DVI and HDMI cable).Also can externally or internally be fed to the optical fiber components of network from the power that other external power source or internal electric source will be used for optical fiber components.
Please referring to Figure 17, the figure shows the optical-fiber network 1700 that is used for identical digital video and/or digital audio-frequency data are distributed to a plurality of digital sink equipment 1720.This embodiment comprises a plurality of electricity outputs of the serializer 1706 in the input interface 1704, and serializer 1706 is used for digital video and/or the digital audio and video signals that serialization is sent by digital source equipment 1740, and sends a plurality of serial electric signals.Optical-fiber network can realize that described optical cable has the single input interface 1704 and a plurality of output interfaces 1705 that are used for network 1700 is coupled to electronically a plurality of digital sink equipment 1720 that is used for network 1700 is coupled to electronically individual digit source device 1740 by optical cable.
Input interface 1704 can comprise two transceivers 1707, is used for receiving two electric serial signals from serializer 1706, electric serial signal is converted to the light serial signal, and the light serial signal is sent on the optical fiber 1701.The light serial signal can be received by two output transceivers 1708, and each output transceiver 1708 all is arranged in the output interface 1705.Output transceiver 1708 receives the light serial signal, and the light serial signal is changed the telegram in reply serial signal, and electric serial signal is sent to the deserializer 1709 that is arranged in each output interface 1705.Deserializer 1709 is the electric serial signal TMDS signal that unstrings back, and the TMDS signal is sent to TMDS receiver 1722 (for example, according to DVI or HDMI standard) in each place equipment 1720.TMDS receiver 1722 receives the TMDS signals, and is control and digital video and/or digital audio-frequency data with the TMDS conversion of signals.TMDS receiver 1722 sends to place controller 1721 in the place equipment 1720 with control and digital video and/or digital audio-frequency data, so that show and/or output.
Optical-fiber network 1700 can be the bi-directional digital optical-fiber network.As shown in figure 17, the input interface 1704 of digital light network 1700 is coupled to digital source equipment 1740 (for example, DVI or HDMI source device), and the output interface 1705 of digital light network 1700 is coupled to a plurality of places equipment 1720 (for example, DVI or HDMI place equipment).Place equipment 1720 can send electric inverse signal (for example, configuration, control, state, DOC and/or CEC signal).The electricity inverse signal can be sent to output transceiver 1708 from place controller 1721.Output transceiver 1708 can receive electric inverse signal, and electric inverse signal is converted to the light inverse signal, and the light inverse signal is sent to the optical fiber 1701 that is coupled to corresponding output transceiver 1708.The light inverse signal can be received by input transceiver 1707, is converted the telegram in reply inverse signal, and is sent to source controller 1741.Can utilize single electronic link or a plurality of electronic link as shown in figure 17 to transmit inverse signal.
Each interface 1704 and 1705 can comprise the transceiver 1707 and 1708 that is used to carry out bidirectional optical.Transceiver can be that to be used for electrical signal conversion be the device of light signal, is again the device that is used for light signal is converted to the signal of telecommunication.Can realize a plurality of different transceiver embodiment.The embodiment that comprises optical module and parts can be used for sending and receiving optical signals by the digital light network, for example, comprises the embodiment that is above discussed with reference to figure 9-14B.Under optical-fiber network is unidirectional situation, need in transceiver, be included in and transmits those required parts on the single direction.
Optical-fiber network 1701 can be used for the TMDS signal is delivered to digital sink equipment 1720 from digital source equipment 1740.Optical-fiber network 1700 also can be used for transmitting in the opposite direction return data.In HDMI embodiment, optical-fiber network 1700 can be used for transmitting DDC and CEC signal in the direction from digital sink equipment 1720 to digital source equipment 1740.
According to other embodiment, can on the either direction of the communication by optical fiber 801, realize WDM, PDM and TDM.Yet, in some cases, may be only in one direction (for example, from source device 1740 to place equipment 1720) need the communication of maximum speed, and optional on opposite Return-ing direction.
Can be connected to the optical fiber components power supply by the 5VDC power supply that is arranged on the standard cable (for example, DVI and HDMI cable).Also can externally or internally be fed to the optical fiber components of network from the power that other external power source or internal electric source will be used for optical fiber components.
Please referring to Figure 18, the figure shows the embodiment that node 1833 is used for single source equipment 1840 is coupled to a plurality of places equipment 1820 now.According to this embodiment, node 1833 can comprise the interface 1834 that is used for coupler 1832 is coupled light to input optical fibre 1802.Coupler 1832 is from input optical fibre 1802 receiving optical signals, and separates optical signals into by output interface 1805 and be coupled in a plurality of output optical fibres 1801 of a plurality of places equipment 1820.In two-way embodiment, coupler 1832 also can receive the back light signal from output optical fibre 1801, and the light inverse signal is combined as multiplexing back light signal, so that be sent to input interface 1804 by input optical fibre 1802.
At work, the source controller 1841 in the source device 1840 sends to TMDS transmitter 1842 in the source device 1840 with control and digital video and/or digital audio-frequency data.TMDS transmitter 1842 is converted to the TMDS signal with control and digital video and/or digital audio-frequency data, the TMDS signal is sent to the serializer 1806 in the input interface 1804 of electric coupling.Serializer 1806 is serialized as electric serial signal with the TMDS signal, and electric serial signal is sent to input transceiver 1807.The input transceiver is converted to the light serial signal with electric serial signal, and the light serial signal is sent to input optical fibre 1802.The light serial signal is received by node 1833, and is separated into two light serial signals by optical coupler 1832.These two light serial signals are received by the output optical fibre 1801 that couples light to node 1833, and described smooth serial signal is received by the output transceiver 1808 that is coupled to output optical fibre 1801.Output transceiver 1808 receives the light serial signal, and the light serial signal is changed the telegram in reply serial signal, and electric serial signal is sent to deserializer 1809.Deserializer 1809 unstrings electric serial signal and is the TMDS signal, and the TMDS signal is sent to TMDS receiver 1822 in the place equipment 1820.TMDS receiver 1822 returns the TMDS conversion of signals to control and digital video and/or voice data, and control and digital video and/or digital audio-frequency data are sent to place controller 1821 in the place equipment 1820, so that show and/or output.
At network 1800 is under the situation of bilateral network, and inverse signal can be sent to source device 1840 from place equipment 1820.For example, place controller 1821 can send to electric inverse signal output transceiver 1808.The output transceiver can be converted to the light inverse signal with electric inverse signal, and the light inverse signal is sent on the output optical fibre.The light inverse signal can be transmitted with different wavelength, make when they are received by the coupler in the node 1,833 1832, they are combined into multiplexing light inverse signal, described multiplexing light inverse signal is received by input transceiver 1807, be converted into electric inverse signal, and be sent to source controller 1841 individually, or be sent to source controller 1841 with the indication of place equipment (therefrom initiating electric inverse signal).
In this embodiment, node 1833 can be the independent parts that the input and output cable couples light to.Other node 1833 can be used for being coupling in the other place equipment 1820 that the downstream is arranged with the serial or parallel connection type.Node 1833 also can have the output of any amount, is used for source device 1840 is coupled to the place equipment 1820 of any amount or other node 1833.Node 1833 can comprise other hardware, is used for amplifying optical signals, makes because the optical power loss that the separated light signal is caused can not disturb the transmission of TMDS signal.Coupler 1832 can be the coupler of any kind, is used for separating and/or multiplexing optical signal based on the wavelength of for example light signal or the power of transmitting optical signal.
Be used for digital video and/or digital audio can be comprised various cable designs discussed herein in conjunction with various design of node from the optical-fiber network that single source equipment is sent to a plurality of places equipment, so that digital video and/or digital audio and video signals are distributed to a plurality of places equipment.For example, please referring to Figure 19, the figure shows and be used for the optical-fiber network 1900 that between source device 1940 and a plurality of places equipment 1920, communicates.Network 1900 can comprise input optical cable 1917, is used for digital video and/or digital audio are sent to node 1933 from source device 1940.Node 1933 can be configured to digital video and/or digital audio are distributed to a plurality of output optical cables 1918 that are coupled to a plurality of digital sink equipment 1920.Should be appreciated that, input optical cable 1917 and output optical cable 1918 can adopt with Fig. 8 A in shown same cable designs, perhaps, input optical cable 1917 and output optical cable 1918 also can be the different designs of being discussed with reference to figure 1-8B as mentioned.Node 1933 also can be directly coupled to source device 1940, directly receives the TMDS signal from source device 1940, thereby no longer needs to import optical cable 1917.
At work, the source controller 1941 in the source device 1940 is sent to TMDS transmitter 1942 with control and digital video and/or digital audio-frequency data.TMDS transmitter 1942 is converted to the TMDS signal with control and digital video and/or digital audio-frequency data, and the TMDS signal is sent to the serializer 1906 in first interface 1904 of input optical cable 1917.Serializer 1906 is serialized as electric serial signal with the TMDS signal, and electric serial signal is sent to the input transceiver 1907 in first interface 1904 of importing optical cable 1917.First transceiver 1907 is converted to the light serial signal with electric serial signal, and the light serial signal is sent to input optical fibre 1901.Second transceiver 1908 in second interface 1905 of input optical cable 1917 receives serial optical signal, and serial optical signal is converted to serial electric signal, and serial electric signal is sent to the deserializer 1909 in second interface 1905 of importing optical cable 1917.Deserializer 1909 is the electric serial signal TMDS signal that unstrings back, and the TMDS signal is sent to node 1933.Node 1933 receives the TMDS signal, and the TMDS signal is sent to two output optical cables 1918.The TMDS signal is received by the serializer 1906 in first interface 1904 of output optical cable 1918.Serializer 1906 is TMDS signal serialization telegram in reply serial signal, and electric serial signal is sent to first transceiver 1907 in first interface 1904 of output optical cable 1918.First transceiver 1907 receives electric serial signal, electric serial signal is converted to the light serial signal, and the light serial signal is sent on the output optical fibre 1902.Described smooth serial signal is received by second transceiver 1908 in second interface 1905 of output optical cable 1918.Second transceiver 1908 is converted to electric serial signal with the light serial signal, and electric serial signal is sent to the deserializer 1909 in second interface 1905 of exporting optical cable 1918.Deserializer 1909 is the electric serial signal TMDS signal that unstrings back, and the TMDS signal is sent to TMDS receiver 1922 in the place equipment 1920.TMDS receiver 1922 is control and digital video and/or digital audio and video signals with the TMDS conversion of signals, and control and digital video and/or digital audio and video signals are sent to place controller 1921 in the place equipment 1920, as shown in figure 19.
At network is under the situation of bilateral network, and inverse signal can be sent to source device 1940 from place equipment 1920.For example, place controller 1921 can be sent to electric inverse signal second transceiver, 1908, the second transceivers 1908 electric inverse signal is converted to the light inverse signal, and the light inverse signal is sent to output optical cable 1902.The light inverse signal is received by first transceiver 1907 in first interface 1904 of output optical cable 1918.First transceiver 1907 is converted to electric inverse signal with the light inverse signal, and electric inverse signal is sent to node 1933.Node is converted to the light inverse signal with second transceiver, 1908, the second transceivers 1908 that electric inverse signal is sent to input optical cable 1917 with electric inverse signal, and the light inverse signal is sent to input optical fibre 1901.Transceiver 1908 can comprise a plurality of reflectors, is used to launch the inverse signal of different wave length, thereby produces multiplexing back light signal, so that transmit by optical fiber 1901 and 1902.Described first transceiver 1907 that returns optical signals input optical cable 1917 receives (for example, being used to detect the receiver of wavelength optical signals), and is converted the telegram in reply inverse signal.The electricity inverse signal can be individually received or is received by source controller 1941 with the indication of place equipment (therefrom initiating electric inverse signal) by source controller 1941.
According to a plurality of embodiment, it may be favourable reducing the conversion of TMDS data from a form to another kind of form.For example, the conversion of erasure signal from electric form to the light form may be favourable (for example, referring to Figure 19).The also number of times that may need erasure signal to be serialized or to unstring, for example, so that simplified design and/or omit parts.For example, please referring to Figure 20, the figure shows the optical-fiber network 2000 that is used for control and digital video and/or digital audio-frequency data are distributed to from single source equipment 2040 a plurality of places equipment 2020.According to this embodiment, electric serial signal is received from input optical cable 2017 by node 2033, and is distributed to a plurality of output optical cables 2018, need not to unstring or serialization signal (comparing with the embodiment shown in Figure 19) again.
At work, the source controller 2041 in the source device 2040 is sent to TMDS transmitter 2042 with control and digital video and/or digital audio-frequency data.TMDS transmitter 2042 is converted to the TMDS signal with control and digital video and/or digital audio-frequency data, and the TMDS signal is sent to the serializer 2006 in first interface 2004 of input optical cable 2017.Serializer 2006 is serialized as electric serial signal with the TMDS signal, and electric serial signal is sent to first transceiver 2007 in first interface 2004 of importing optical cable 2017.First transceiver 2004 is converted to the light serial signal with electric serial signal, and the light serial signal is sent to input optical fibre 2001.Second transceiver 2008 in second interface 2005 of input optical cable 2017 receives serial optical signal, serial optical signal is converted to serial electric signal, and serial electric signal is sent to node 2033.Node 2033 receives electric serial signal, and electric serial signal is sent to two output optical cables 2018.The electricity serial signal is received by first transceiver 2007 in first interface 2004 of output optical cable 2018.First transceiver 2007 receives electric serial signal, electric serial signal is converted to the light serial signal, and the light serial signal is sent on the output optical fibre 2002.The light serial signal is received by second transceiver 2008 in second interface 2005 of output optical cable 2018.Second transceiver 2008 is converted to electric serial signal with the light serial signal, and electric serial signal is sent to the deserializer 2009 in second interface 2005 of exporting optical cable 2018.Deserializer 2009 is the electric serial signal TMDS signal that unstrings back, and the TMDS signal is sent to TMDS receiver 2022 in the place equipment 2020.TMDS receiver 2022 is control and digital video and/or digital audio and video signals with the TMDS conversion of signals, and control and digital video and/or digital audio and video signals are sent to place controller 2021 in the place equipment 2020, as shown in figure 20.
At network is under the situation of bilateral network, and inverse signal can be sent to source device 2040 from place equipment 2020.For example, place controller 2021 can be sent to electric inverse signal second transceiver, 2008, the second transceivers 2008 electric inverse signal is converted to the light inverse signal, and the light inverse signal is sent to output optical fibre 2002.The light inverse signal is received by first transceiver 2007 in first interface 2004 of output optical cable 2018.First transceiver 2007 is converted to electric inverse signal with the light inverse signal, and electric inverse signal is sent to node 2033.Node 2033 is converted to the light inverse signal with second transceiver, 2008, the second transceivers 2008 that electric inverse signal is sent to input optical cable 2017 with electric inverse signal, and the light inverse signal is sent to input optical fibre 2001.Transceiver 2008 can comprise a plurality of reflectors, is used to launch the inverse signal of different wave length, thereby produces multiplexing back light signal, so that transmit by optical fiber 2001 and 2002.First transceiver 2007 that returns optical signals input optical cable 2017 receives (for example, being used to detect the receiver of wavelength optical signals), and is converted the telegram in reply inverse signal.The electricity inverse signal can be received by source controller 2041 individually, or is received by source controller 2041 with the indication of place equipment 2020 (therefrom initiating electric inverse signal).
Please, comprise that the network of digital source equipment 2100 can be distributed to different receiving equipment A-N with different digital videos and/or digital audio and video signals (Data A-N) referring to Figure 21.Data can be the data that mail to specific place.For example, data A can mail to receiving equipment A, and data B can mail to receiving equipment B or the like.In this way, single source equipment 2100 can communicate by optical-fiber network and a plurality of receiving equipment A-N.Data A-N can be sent out by single optical fiber 2112 or a plurality of optical fiber.For example, data A-N can be re-used, and is sent out by single optical fiber 2112.For example can utilize TDM, WDM or merit divide multiplexing (power division multiplexing, PDM), send data A-N by single optical fiber 2112.
Needing single source equipment to control a plurality of places equipment simultaneously and be independent of under the environment of other place equipment, can advantageous particularly according to the optical-fiber network of embodiment shown in Figure 21.Control a plurality of demonstrations place equipment at data processing source device (for example, computer) and (for example, computer monitor under) the situation, check that the independent data on a plurality of display devices can be favourable concerning the user according to HDMI or DVI standard.For example, the user may be by adding other screen simply, and the configuration computer is expanded the demonstration desktop of computer system to show independent data on each screen.This also can be favourable for watching a plurality of sports casts simultaneously.In this way, the optical-fiber network according to as shown in figure 21 embodiment can be used to utilize minimum hardware and configuration simply to come the display surface of expanding system effectively.
As shown in figure 21, source device 2100 can send different electric digital videos and/or digital audio-frequency data (data A-N), as many groups TMDS signal.Different electric digital videos and/or digital audio-frequency data (data A-N) can be to mail to different digital sink equipment (receiver A-N).Different electric digital videos and/or digital audio-frequency data can be received by a plurality of optical transmitting set 2105a-n.Optical transmitting set 2105a-n can be converted to light digital video and/or digital audio-frequency data with electric digital video and/or digital audio-frequency data, and light digital video and/or digital audio-frequency data are sent to multiplexer 2110.Multiplexer 2110 can be multiplexed with multiplexed optical signals with light digital video and/or digital audio-frequency data, and multiplexed optical signals is sent to optical fiber 2112.Demodulation multiplexer 2115 can receive multiplexed optical signals, and with multiplexed optical signals demultiplexing light echo digital video and/or digital audio-frequency data.Light digital video and/or digital audio-frequency data can be received by optical receiver 2120a-n, optical receiver 2120a-n receives light digital video and/or digital audio-frequency data, light digital video and/or digital audio-frequency data are converted to electric digital video and/or digital audio-frequency data (data A-N), and electric digital video and/or digital audio-frequency data (data A-N) are sent to place equipment 2125a-n (receiving equipment A-N).Multiplexing digital video and/or digital audio-frequency data can be directed into suitable receiving system based on the light digital video that receives and/or the wavelength of digital audio-frequency data.
Please referring to Figure 22, the figure shows and be used for different digital videos and/or digital audio-frequency data are sent to the not network of chummage equipment 2265a-n from digital source equipment 2200.Source device 2200 can send and mail to not many groups TMDS signal 2205a-n of chummage equipment 2265a-n.Described many group TMDS signal 2205a-n can be the TMDS signals that meets DVI or HDMI standard (for example, referring to Fig. 1 and 2).Many group TMDS signal 2205a-n can be received by serializer 2210a-n, and serializer 2210a-n will organize TMDS signal 2205a-n more and be serialized as electric serial signal.The electricity serial signal can be received by laser 2215a-n.Laser 2215a-n is converted to wavelength optical signals with electric serial signal.Wavelength optical signals can be received by optical multiplexer 2220, and optical multiplexer 2220 can be multiplexed with multiplexed optical signals with described light signal.Multiplexed optical signals can be sent to optical demultiplexer 2230 by optical link 2225, and optical demultiplexer 2230 returns the multiplexed optical signals demultiplexing to wavelength optical signals.Interface 2235,2240 and 2245 optical receiver 2250a-n receive wavelength optical signals, and light signal is changed the telegram in reply serial signal.The electricity serial signal is received by deserializer 2255a-n, and many group TMDS signal 2260a-n (for example, meeting DVI or HDMI standard) that unstringed back.Described many group TMDS signal 2260a-n are received by different place equipment 2265a-n, so that show digital video and/or the digital audio-frequency data that is sent by digital source equipment 2200.
Please, the figure shows the optical-fiber network that is used for transmission HDMI signal between source device 2300 and a plurality of place equipment 2350a-n referring to Figure 23.Source device 2300 will mail to not, and many groups HDMI data 2305a-n of chummage equipment 2350a-n sends to input interface 2301.Described many group HDMI data 2305a-n are received by serializer 2310a-n, and are serialized as electric serial HDMI data.Electricity serial HDMI data are sent to a plurality of laser 2315a-n, and laser 2315a-n is converted to wavelength optical signals with electric serial HDMI data.Wavelength optical signals is received with conciliating multiplexing equipment 2320 by recovery.Recovery is multiplexed with multiplexing signal with conciliating multiplexing equipment 2320 with wavelength optical signals, and multiplexing signal is sent on the optical link 2325.Multiplexing signal is received with conciliating multiplexing equipment 2330 by recovery, and recovery is wavelength optical signals with conciliating multiplexing equipment 2330 with multiplexing signal demultiplexing.Wavelength optical signals is received by a plurality of receiver 2335a-n, and receiver 2335a-n is converted to electric serial data with wavelength optical signals.The electricity serial data is received by a plurality of deserializer 2340a-n, and deserializer 2340a-n unstrings electric serial data and postbacks HDMI data toward specific place (at least one among the 2350a-n).Then, the HDMI data are received by predetermined place (at least one among the 2350a-n), and digital video that comprises in the HDMI data and/or digital audio-frequency data are shown and/or output by the place 2350a-n that receives these data.
Send under the situation of source device 2300 from place equipment 2350a-n in the HDMI inverse signal, the laser 2355a-n in the output interface 2302a-n can receive electric inverse signal, and electric inverse signal is converted to the back light signal of different wave length.The back light signal of different wave length can be received with conciliating multiplexing equipment 2330 by recovery, and is multiplexed with multiplexing inverse signal and is sent on the optical link 2325.Multiplexing inverse signal can be received with conciliating multiplexing equipments 2320 by the recovery in the input interface 2301, and is the back light signal of different wave length by demultiplexing.The light inverse signal of different wave length can be received by a plurality of receiver 2360a-n in the input interface 2301, and is converted into electric inverse signal.The electricity inverse signal can be received by source device 2300.
Please, the figure shows the optical-fiber network 2400 that is used for transmission TMDS signal between source device 2440 and a plurality of place equipment 2420a-n referring to Figure 24.Source device 2440 comprises source controller 2441, and source controller 2441 is used for control data and digital video and/or digital audio-frequency data are sent to a plurality of TMDS transmitter 2442a-n.TMDS transmitter 2442a-n is converted to many group TMDS signals with control data and digital video and/or digital audio-frequency data.Described many group TMDS signals can meet example HDMI or DVI standard as discussed above.Described many group TMDS signals are received by serializer 2406a-n, and are serialized as a plurality of electric serial signals.The electricity serial signal is received by a plurality of transceiver 2407a-n, and transceiver 2407a-n is converted to the light serial signal with a plurality of serial signals.The light serial signal is sent to multiplexer/demultiplexer 2434 (for example, fiber coupler), and multiplexer/demultiplexer 2434 is multiplexed with multiplexed optical signals with the light serial signal, and multiplexed optical signals is coupled to input optical fibre 2401.Multiplexed optical signals by the demodulation multiplexer/multiplexer 2433 that is coupled to input optical fibre 2401 (for example, fiber coupler) receives, demodulation multiplexer/multiplexer 2433 returns the multiplexed optical signals demultiplexing to two light serial signals, and the light serial signal is coupled to different output optical fibre 2402a-n.The light serial signal is received by the transceiver 2408a-n in the output cable interface 2405a-n.Transceiver 2408a-n changes the telegram in reply serial signal with the light serial signal, and electric serial signal is sent to a plurality of deserializer 2409a-n.Deserializer 2409a-n unstrings back to organize the TMDS signals with electric serial signal more, and described many group TMDS signals are sent to place equipment 2420a-n.TMDS receiver 2422a-n in the equipment 2420a-n of place receives the TMDS signal, and be control and digital video and/or digital audio and video signals with the TMDS conversion of signals, and control and digital video and/or digital audio and video signals be sent to place controller 2421a-n, so that the demonstration of control figure video and/or digital audio-frequency data and/or output.
Sent by place equipment 2420a-n (for example, according to the HDMI standard) under the situation of electric inverse signal, inverse signal is sent to transceiver 2408a-n in the output interface 2405a-n from place controller 2421a-n.Transceiver 2408a-n is converted to the light inverse signal with electric inverse signal, and the light inverse signal is sent to output optical fibre 2402a-n.Demodulation multiplexer/multiplexer 2433 receives the light inverse signal, the light inverse signal is multiplexed with multiplexing light inverse signal, and multiplexing light inverse signal is sent on the input optical fibre 2401.Multiplexer/demultiplexer 2434 receives multiplexing light inverse signal, and multiplexing light inverse signal demultiplexing is returned the light inverse signal of separation, and the light inverse signal is directed to transceiver 2407a-n in the input interface 2404.Transceiver 2407a-n is converted to electric inverse signal with the light inverse signal, and electric inverse signal is sent to the source controller 2441 of source device 2440.
Optical-fiber network shown among Figure 17-24 can comprise the transceiver that is used to transmit and receive light signal.Transceiver can comprise the bi-directional optical equipment of being discussed with reference to figure 10-14B here.At embodiment only in one direction under the situation of transmission signals, transceiver can only need in the input interface to be used for electrical signal conversion be the optical transmitting set of light signal and the optical receiver that is used for light signal is changed the telegram in reply signal of output interface.Transceiver receives among the embodiment of bidirectional optical therein, and transceiver will comprise optical receiver and optical transmitting set, so that in the both direction transmit optical signals.
Embodiment as described above can realize in any environment that optical communication will be supported.Can use multimode and/or single mode embodiment.For ease of discussing, above the embodiment that is discussed has used minimum passage when describing.Yet, be split into embodiment in a large amount of passages for signal, use the single modes can advantageous particularly for various telecom wavelengths, because there is standarized component to can be used to carry out various functions.For example, embodiment adopts the 1310 or 1550 nanometer solutions of carrying out on monomode fiber can be favourable, because for this EPON, ready-made available parts arranged.Other workpiece is if amplifier and other conventional components also can be used for optical field.Transceiver can use conventional ROSA and TOSA to carry out optical communication, and perhaps, transceiver also can use other configuration as discussed herein.
Although described the present invention is with at the DVI of digital video and/or digital audio-frequency data transmission and HDMI standard implementation,, identical instruction can be applied to other digital video and/or digital audio-frequency data transmission standard.For example, after with reference to the disclosure, how instruction of the present invention is applied to other video data standard such as VESA, LDVS, DFP and other standard, for those be proficient in present technique will be tangible.Such embodiment is also included within the scope of the invention.
In addition, digital of digital video data communication needn't one fixes between the specified concrete electronic equipment for consumption of the disclosure and carries out.Described communication can be carried out between any digital video that is configured to use the electronic digit data transmission cable and/or audio frequency apparatus.
Under the situation that does not deviate from spirit of the present invention and inner characteristic, the present invention can implement with other particular form.It only is illustrative that described embodiment should be regarded as in all fields, rather than restrictive.Therefore, scope of the present invention is pointed out by claims rather than by aforementioned specification.All should be included in the scope of described claim in the implication that is equal to of claim and all changes in the scope.

Claims (24)

1. digital optical interface equipment comprises:
Input interface, be configured to receive input TV signal frequently from the digital video source device, described first interface comprises optical transmitting set, described optical transmitting set is configured to receive described input TV signal frequently, and with described input TV frequently conversion of signals be input optical signal, described optical transmitting set further is configured to launch described input optical signal;
Coupler is configured in described input optical signal and at least two light output ends at least one is coupled;
Wherein, each light output end all is coupled to output interface, each output interface all comprises optical receiver, the corresponding output end that described optical receiver is configured at least from described two light output ends receives described input optical signal, and described input optical signal is converted to the output convey electronic video signals that is fit to by the use of digital video place equipment.
2. according to the digital interface equipment of claim 1, wherein, described coupler is configured to different input optical signals is directed to different light output ends, and perhaps described coupler is configured to same input optical signal is directed to a plurality of light output ends.
3. according to the digital interface equipment of claim 1, wherein:
Described input interface is the part of input optical cable;
Each output interface all is the part of output optical cable; And
Described coupler is the part of node, and described node is configured to the electric coupling of described input optical cable or couples light in the described output optical cable each.
4. according to the digital interface equipment of claim 1, wherein, described input interface is configured to be connected to the digital visual interface DVI socket or the HDMI (High Definition Multimedia Interface) HDMI socket of digital video source device, and wherein, described output interface is configured to be connected to the DVI socket or the HDMI socket of digital video place equipment.
5. according to the digital interface equipment of claim 1, wherein, described input interface is configured to receive minimize changes difference signaling TMDS signal.
6. according to the digital interface equipment of claim 1, wherein, at least one interface in the described interface comprises the device that is used to transmit and receive light signal.
7. digital light network comprises:
Input interface is configured to be electrically coupled to the DVI or the HDMI socket of DVI or HDMI source device, and described input interface comprises:
It is light signal that optical transmitting set, the electricity that is configured to receive from described DVI or HDMI source device minimize conversion difference signaling TMDS conversion of signals;
Input optical fibre couples light to described optical transmitting set to receive described light signal;
Coupler, be configured to described light signal be coupled in a plurality of output optical fibres of described coupler at least one be coupled; And
At least two output interfaces, each in described at least two output interfaces all are configured to be electrically coupled to the corresponding DVI or the HDMI socket of at least two DVI or HDMI place equipment, and each in described at least two output interfaces all comprises:
Optical receiver is configured to receive described light signal and described light signal is changed back described electric TMDS signal, and is configured to described electric TMDS signal is sent to relevant device in described DVI or the HDMI place equipment.
8. according to the digital light network of claim 7, wherein, described input interface also comprises:
Serializer is used for described electric TMDS signal is serialized as electric serial TMDS signal; And
Wherein, in described at least two output interfaces at least one further comprises deserializer, be used for the described electric serial TMDS signal described electric TMDS signal that unstrings back, and be configured to described electric TMDS signal is sent to relevant device in described DVI or the HDMI place equipment.
9. according to the digital light network of claim 7, wherein, described coupler is configured to described light signal is coupled in the described a plurality of output optical fibres that couple light to described coupler at least two, makes that at least two in described a plurality of DVI or the HDMI place equipment receive same electric TMDS signals.
10. according to the digital light network of claim 7, also comprise:
Multiplexer is used for described light signal and other optical multiplexed signal usefulness, to produce multiplexed optical signals; And
Demodulation multiplexer, the light signal that to be used for described multiplexed optical signals demultiplexing be demultiplexing.
11. according to the digital light network of claim 10, wherein, the described coupler of the optical signals of described demultiplexing is directed to different place equipment, makes that at least two in described a plurality of DVI or the HDMI place equipment receive different electric TMDS signals separately.
12. according to the digital light network of claim 7, wherein, described coupler is a Cuccia coupler, and is electrically coupled to described before at least one in a plurality of output optical fibres at described light signal, described light signal is converted back to the signal of telecommunication.
13. according to the digital light network of claim 12, wherein, described light signal was converted into the signal of telecommunication before being received by described Cuccia coupler, and wherein, described Cuccia coupler is coupled to a plurality of output optical fibres with the described signal of telecommunication.
14. according to the digital light network of claim 7, wherein, described coupler is a part that is configured to described at least one node that is coupled in described input optical fibre and a plurality of output optical fibre.
15. digital light network according to claim 14, wherein, the light signal that described node further is configured to receive from described input optical fibre is converted to the signal of telecommunication, and the described signal of telecommunication is separated at least two signals of telecommunication, and the described signal of telecommunication is coupled to described at least two output interfaces.
16. according to the digital light network of claim 14, wherein, it is light signal that described node further is configured to described electrical signal conversion, and described light signal is coupled to described output interface.
17. digital light network according to claim 7, wherein, one at least one in the described input interface and/or described second interface comprises:
VCSEL；
Monitor optical receiver, be used for the output of described VCSEL is monitored;
The modulated laser driver is configured to the biasing drive current that is fed to described VCSEL is modulated; And
The TO-Can encapsulation encapsulates described VCSEL, described supervision optical receiver and described modulated laser driver.
18. according to the digital light network of claim 7, wherein, described optical-fiber network is by described input optical fibre transmission signals on first direction and second direction, described second direction is opposite with described first direction, wherein:
The described input optical fibre that described input interface is configured to be used for two-way communication is coupled to described DVI or HDMI source device; And
Described second interface is configured to be coupled being used for the described optical-fiber network of two-way communication and described DVI or HDMI place equipment.
19. digital light network according to claim 18, wherein, in described input interface and described second interface at least one or the combination in any of described input interface and described second interface comprise opto-electronic device, described opto-electronic device is used to detect the incident beam along beam axis, and be used for launching irradiating light beam along described beam axis, described opto-electronic device comprises:
Photodetector along described beam axis setting, is used to receive described incident beam, and is used to detect first wavelength and/or first wave-length coverage; And
Described optical transmitting set along described beam axis setting, is used to launch described outgoing beam, and wherein, described outgoing beam comprises second wavelength and/or second wave-length coverage.
20. according to the digital light network of claim 18, wherein, described input interface further comprises:
Serializer comprises the circuit that is configured to a plurality of TMDS signals are serialized as electric serial signal;
The first transmitting optics assembly (TOSA) is configured to described electric serial signal is converted to light signal, and described smooth serial signal is sent on first end of described input optical fibre;
First receives optical module (ROSA), is configured to receive the back light signal from described input optical fibre; And
Wherein, described second interface further comprises:
The 2nd ROSA is configured to receive described light signal from second termination of described output optical fibre, and described light signal is converted to electric serial signal;
Second deserializer comprises being configured to unstring the back circuit of TDMS signal of described electric serial signal; And
The 2nd TOSA is configured to described back light signal is transmitted into described output optical fibre.
21. according to the digital light network of claim 18, wherein, at least one in the described interface comprises opto-electronic device, described opto-electronic device comprises:
The reflector diode comprises first p-n junction with a p layer and a n layer;
First tunnel junction integrally is coupled to described reflector diode, and described tunnel junction comprises heavy doping n+ layer and heavy doping p+ layer; And
First photodiode integrally is coupled to described first tunnel junction, and described first tunnel junction comprises second p-n junction.
22. according to the digital light network of claim 18, wherein, at least one in the described interface comprises bi-directional optical equipment, described bi-directional optical equipment comprises:
The light mouth;
Be close to the wavelength separator of described light mouth;
Be close to the light source of described wavelength separator; And
Be close to the detector of described wavelength separator,
Wherein:
The light that described wavelength separator will have first wavelength is sent to described light mouth from described light source; And
The light that described wavelength separator will have second wavelength from described smooth oral reflex to described detector.
23. according to the digital light network of claim 7, wherein, at least one in described input and/or the output interface comprises the device that is used to transmit and receive light signal.
24. one kind is used for node that input digit video interface DVI or HDMI (High Definition Multimedia Interface) HDMI cable and at least two output DVI or HDMI cable are coupled, described node comprises:
Input DVI or HDMI comprise DVI or HDMI connector, and described DVI or HDMI connector are configured to minimize conversion difference signaling TMDS signal from input DVI or the reception of HDMI cable; And
Export DVI or HDMI at least two, comprise DVI or HDMI connector, described DVI or HDMI connector are configured to the TMDS signal is sent to output DVI or HDMI cable.
CNA2006800363988A 2005-08-30 2006-08-30 Optical networks for consumer electronics Pending CN101278505A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102523438A (en) * 2011-12-20 2012-06-27 江苏飞格光电有限公司 Fiber-transmission digital visual interface (DVI)
CN104219478A (en) * 2013-05-31 2014-12-17 鸿富锦精密工业（深圳）有限公司 An adapter cable for a high definition multimedia interface and a network cable interface
CN104349188A (en) * 2013-07-29 2015-02-11 鸿富锦精密工业（深圳）有限公司 Adapter-connecting box
CN106791950A (en) * 2016-12-27 2017-05-31 深圳Tcl数字技术有限公司 High speed transmission of signals system, high speed transmission of signals method and device
CN107483904A (en) * 2017-08-11 2017-12-15 凌云天博光电科技股份有限公司 Cable television cut system and channel-splitting filter
CN107666579A (en) * 2016-07-27 2018-02-06 北京计算机技术及应用研究所 A kind of long range transmission of video display device
CN109861725A (en) * 2019-03-19 2019-06-07 北京都是科技有限公司 Signal transmission system
CN112261334A (en) * 2020-10-21 2021-01-22 广东博华超高清创新中心有限公司 Transmission method and system supporting HDMI2.1 signal single-channel input and multi-channel output
CN115412168A (en) * 2021-05-26 2022-11-29 宏观微电子股份有限公司 Source node architecture for optical communication channel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102523438A (en) * 2011-12-20 2012-06-27 江苏飞格光电有限公司 Fiber-transmission digital visual interface (DVI)
CN104219478A (en) * 2013-05-31 2014-12-17 鸿富锦精密工业（深圳）有限公司 An adapter cable for a high definition multimedia interface and a network cable interface
CN104349188B (en) * 2013-07-29 2019-03-12 鸿富锦精密工业（深圳）有限公司 Interconnecting device
CN104349188A (en) * 2013-07-29 2015-02-11 鸿富锦精密工业（深圳）有限公司 Adapter-connecting box
CN107666579B (en) * 2016-07-27 2020-06-30 北京计算机技术及应用研究所 Long-distance video transmission display equipment
CN107666579A (en) * 2016-07-27 2018-02-06 北京计算机技术及应用研究所 A kind of long range transmission of video display device
CN106791950A (en) * 2016-12-27 2017-05-31 深圳Tcl数字技术有限公司 High speed transmission of signals system, high speed transmission of signals method and device
CN107483904A (en) * 2017-08-11 2017-12-15 凌云天博光电科技股份有限公司 Cable television cut system and channel-splitting filter
CN107483904B (en) * 2017-08-11 2019-12-27 凌云天博光电科技股份有限公司 Cable television inter-cut system and branching filter
CN109861725A (en) * 2019-03-19 2019-06-07 北京都是科技有限公司 Signal transmission system
CN109861725B (en) * 2019-03-19 2024-04-02 北京都是科技有限公司 Signal transmission system
CN112261334A (en) * 2020-10-21 2021-01-22 广东博华超高清创新中心有限公司 Transmission method and system supporting HDMI2.1 signal single-channel input and multi-channel output
CN115412168A (en) * 2021-05-26 2022-11-29 宏观微电子股份有限公司 Source node architecture for optical communication channel

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