CN103186495A - IEEE1394 device adapter - Google Patents
IEEE1394 device adapter Download PDFInfo
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- CN103186495A CN103186495A CN 201110443665 CN201110443665A CN103186495A CN 103186495 A CN103186495 A CN 103186495A CN 201110443665 CN201110443665 CN 201110443665 CN 201110443665 A CN201110443665 A CN 201110443665A CN 103186495 A CN103186495 A CN 103186495A
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- ieee1394
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Abstract
The invention relates to an IEEE1394 device adapter, which comprises a first translation circuit, a second translation circuit, a switch unit and an IEEE1394 interface. When the switch unit connects the first translation circuit with the IEEE1394 interface, a digital-to-analog converter converts an IEEE1394 signal into a first carrier signal, the first carrier signal is coupled with an alternating-current voltage signal by a first coupler, and then the alternating-current voltage signal is transmitted through an alternating-current line; and when the switch unit selectively connects the second translation circuit with the IEEE1394 interface, a second coupler separates a second carrier signal from an alternating-current voltage signal which is coupled with the second carrier signal, the second carrier signal is converted into the IEEE1394 signal by an analog-to-digital converter, and then the IEEE1394 signal is output to the IEEE1394 interface. The IEEE1394 device adapter provided by the invention has the advantage that the application scope of an IEEE1394 device is greatly improved.
Description
Technical field
The present invention relates to a kind of IEEE1394 device adapter.
Background technology
Usually, IEEE1394 equipment must carry out the IEEE1394 data transfer between devices by the IEEE1394 interface of computing machine.When not having computing machine, then have between the IEEE1394 equipment and then can't carry out data transmission.Like this, the usable range of IEEE1394 equipment is restricted deeply.
Summary of the invention
In view of above content, be necessary to provide a kind of IEEE1394 device adapter, to enlarge IEEE1394 equipment usable range.
A kind of IEEE1394 device adapter, comprise an ac power plug, one IEEE1394 interface, one first built-up circuit, one second built-up circuit and a switch element, this ac power plug is used for grafting one AC Power supply socket and receives ac voltage signal, this IEEE1394 interface is used for the IEEE1394 equipment of pegging graft and receives the IEEE1394 signal, this switch element is connected between this first and second built-up circuit so that this first and second built-up circuit is switched and this first built-up circuit is connected maybe with this IEEE1394 interface this second built-up circuit is connected with this IEEE1394 interface, this first built-up circuit comprises a digital/analog converter and one first coupling mechanism, this second built-up circuit comprises an analog/digital converter and one second coupling mechanism, this first digital/analog converter is connected to this switch element and this first coupling mechanism, this first coupling mechanism also is connected on this ac power plug, this analog/digital converter is connected to this switch element and this second coupling mechanism, this second coupling mechanism also is connected on this ac power plug, when this switch element is connected to this IEEE1394 interface with this first built-up circuit, this first digital/analog converter receives this IEEE1394 equipment by the IEEE1394 signal of IEEE1394 interface output, and this IEEE1394 signal is converted to a first carrier signal, this first coupling mechanism is coupled to this first carrier signal on the ac voltage signal that receives from this ac power plug, and will be coupled with by this AC Power supply socket on the alternating current transmission line that ac voltage signal transfers to this AC Power supply socket is connected of this first carrier signal, when this switch element is connected to this IEEE1394 interface with this second built-up circuit, this second coupling mechanism receives from the ac voltage signal that is coupled with one second carrier signal on this AC power line, and the ac voltage signal that is coupled with this second carrier signal separated to isolate this second carrier signal, this analog/digital converter converts this second carrier signal to the IEEE1394 signal, and exports this IEEE1394 signal to this IEEE1394 equipment by the IEEE1394 interface.
The switching selectivity ground of IEEE1394 device adapter of the present invention by its switch element is connected to this IEEE1394 interface with this first built-up circuit and maybe this second built-up circuit is connected to this IEEE1394 interface.When selection is connected this first built-up circuit with this IEEE1394 interface, this digital/analog converter is converted to the first carrier signal with this IEEE1394 signal, and transmits by this alternating current transmission line after by this first coupling mechanism this first carrier signal being coupled to this ac voltage signal.When selecting this second built-up circuit to be connected with this IEEE1394 interface, this second coupling mechanism is isolated this second carrier signal with the ac voltage signal that is coupled with second carrier signal in this alternating current transmission line, and export this IEEE1394 interface to after by this analog/digital converter this second carrier signal being converted to this IEEE1394 signal, so, can realize communication between the IEEE1394 equipment by this IEEE1394 device adapter and this AC power cord, thereby improve the usable range of IEEE1394 equipment greatly.
Description of drawings
The invention will be further described in conjunction with embodiment with reference to the accompanying drawings.
Fig. 1 is the synoptic diagram of the preferred embodiments of IEEE1394 device adapter of the present invention.
Fig. 2 is the block diagram of IEEE1394 device adapter among Fig. 1.
Fig. 3 is the block diagram of the power-switching circuit in the IEEE1394 device adapter of the present invention.
Fig. 4 is the block diagram under the IEEE1394 device adapter use state of the present invention.
Fig. 5 is the block diagram of the part of the signal converting under the IEEE1394 device adapter use state of the present invention.
The main element symbol description
| |
10 |
| |
20 |
| The IEEE1394 |
30 |
| First built- |
40 |
| The |
41 |
| Digital/ |
42 |
| |
43 |
| First alternating |
44 |
| Second built-up |
50 |
| The decompress(ion) |
51 |
| Analog/ |
52 |
| |
53 |
| Second alternating |
54 |
| |
60 |
| AC |
70 |
| First AC |
71 |
| Second AC |
72 |
| IEEE1394 |
80 |
| The one IEEE1394 |
81 |
| The 2nd IEEE1394 |
82 |
| Alternating |
90 |
| The IEEE1394 |
100 |
| The one IEEE1394 |
101 |
| The 2nd IEEE1394 |
102 |
| |
200 |
| The 3rd alternating |
210 |
| AC/ |
220 |
| Reducing |
230 |
| |
240 |
| |
300 |
| |
400 |
Following embodiment will further specify the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
See also Fig. 1-3, the preferred embodiments of IEEE1394 device adapter 100 of the present invention comprises a housing 10, an ac power plug 20, an IEEE1394 interface 30, one first built-up circuit 40, one second built-up circuit 50, a switch element 60 and a voltage conversion circuit 200.This ac power plug 20 is arranged on this housing 10, in order to the AC Power supply socket 70 of pegging graft.This IEEE1394 interface 30 is arranged on this housing 10, in order to connect an IEEE1394 equipment 80.This switch element 60 be connected this first, second built-up circuit 40 and 50 and IEEE1394 interface 30 between, make this first built-up circuit 40 be connected to this IEEE1394 interface 30 or make this second built-up circuit 50 be connected to this IEEE1394 interface 30 so that this first and second built-up circuit 40 and 50 is switched.When the IEEE1394 equipment 80 that is connected with this IEEE1394 device adapter 100 during as the transmission end, switch this switch element 60 this first built-up circuit 40 is connected with this IEEE1394 interface 30.When the IEEE1394 equipment 80 that is connected with this IEEE1394 device adapter 100 during as receiving end, switch this switch element 60 this second built-up circuit 50 is connected with this IEEE1394 interface 30.In the present embodiment, this switch element 60 is a manual switch.
This first built-up circuit 40 comprises a compression control chip 41, a digital/analog converter 42, one first coupling mechanism 43 and one first alternating current filter 44.This second built-up circuit 50 comprises a decompress(ion) control chip 51, an analog/digital converter 52, one second coupling mechanism 53 and one second alternating current filter 54.
This compression control chip 41 is connected to this switch element 60.This digital/analog converter 42 is connected between this compression control chip 41 and this first coupling mechanism 43.This first coupling mechanism 43 also is connected to this ac power plug 20 by this first alternating current filter 44.This ac power plug 20 also connects this second coupling mechanism 53 by this second alternating current filter 54.This analog/digital converter 52 is connected between this second coupling mechanism 53 and this decompress(ion) control chip 51.This decompress(ion) control chip 51 also is connected to this switch element 60.
This voltage conversion circuit 200 comprises one the 3rd alternating current filter 210, an AC/DC converter 220, a reducing transformer 230 and a direct current wave filter 240.The 3rd alternating current filter 210 is connected to this ac power plug 20 and receives this ac voltage signal, and this AC power is carried out filtering.This AC/DC converter 220 is connected between the 3rd alternating current filter 210 and this reducing transformer 230, ac supply signal being converted to a direct current voltage signal, and exports this d. c. voltage signal to this reducing transformer 230.This DC filter 240 is connected between this reducing transformer 230 and this IEEE1394 interface 30 this d. c. voltage signal is carried out export the d. c. voltage signal after this step-down to this IEEE1394 interface 30 after the filtering, to provide operating voltage to the IEEE1394 equipment that is connected to this IEEE1394 interface 30.
Please refer to Fig. 4 and 5, the existing principle of work that specifies this IEEE1394 device adapter 100 by an example.Now need to utilize this alternating current transmission line 90 to make an IEEE1394 equipment 81 in one first room 300, as computing machine, the 2nd IEEE1394 equipment 82 with in one second room 400 as digital camera, carries out communication.An IEEE1394 device adapter is pegged graft in first AC Power supply socket 71 in this first room 300, and another IEEE1394 device adapter is pegged graft in second AC Power supply socket 72 in this second room 400.For ease of explanation, in Fig. 4, as one the one IEEE1394 device adapter, and label is 101 with the IEEE1394 device adapter in first room 300, as one the 2nd IEEE1394 device adapter, and label is 102 with the IEEE1394 device adapter in this second room 400.But inner structure and the function of this first and second IEEE1394 device adapter 101,102 inner structure and function and above-mentioned IEEE1394 device adapter 100 are identical.
When needs make an IEEE1394 equipment 81 to the 2nd IEEE1394 equipment 82 transmission data, the one IEEE1394 equipment 81 is plugged in the IEEE1394 interface 30 of an IEEE1394 device adapter 101, and the 2nd IEEE1394 equipment 82 is plugged in the IEEE1394 interface 30 of the 2nd IEEE1394 device adapter 102.Make an IEEE1394 equipment 81 as the transmission end by the switch element 60 that switches an IEEE1394 device adapter 101.Make the 2nd IEEE1394 equipment 82 as receiving end by the switch element 60 that switches in the 2nd IEEE1394 device adapter 102.
During work, the one IEEE1394 equipment 81 output IEEE1394 signals transfer to this digital/analog converter 42 after 41 pairs of these IEEE1394 signals of compression control chip in IEEE1394 interface 30, the one IEEE1394 device adapters 101 of an IEEE1394 device adapter 101 compress package.This digital/analog converter 42 transfers to this first coupling mechanism 43 after converting this IEEE1394 signal compression package to a carrier signal.This first coupling mechanism 43 is coupled to this carrier signal on the ac voltage signal that receives from this first AC Power supply socket 71, and is undertaken exporting on this alternating current transmission line 90 by this ac power plug 20 after the filtering by 44 pairs of these ac voltage signals that are coupled with carrier signal of this first alternating current filter.
The ac voltage signal that this alternating current transmission line 90 will be coupled with carrier signal transfers to this second alternating current filter 54 by the ac power plug 20 that is connected with this second AC Power supply socket 72 and filters.After obtaining this carrier signal after the ac voltage signal that is coupled with carrier signal after second coupling mechanism 53 in the 2nd IEEE1394 device adapter 102 will filter separates, and this carrier signal transferred to its analog/digital converter 52.This analog/digital converter 52 converts behind the IEEE1394 signal compression package with this IEEE1394 signal compression package transmission this carrier signal to corresponding decompress(ion) control chip 51 to.The IEEE1394 signal compression package that 51 pairs of this decompress(ion) control chips receive carries out obtaining this IEEE1394 signal behind the decompress(ion), and this IEEE1394 signal is exported in the 2nd IEEE1394 equipment 82 by its switch element 60 and IEEE1394 interface 30.
In other embodiments, this compression control chip 41, this decompress(ion) control chip 51, this first to the 3rd alternating current filter 44,54,210 and this DC filter 240 owing to only play the effect of filtering so all can omit.This switch element 60 also can be automatic control switch, then when this IEEE1394 interface 30 receives the IEEE1394 signal this first built-up circuit 40 is connected to this IEEE1394 interface 30 and makes the IEEE1394 equipment 80 that is connected with this IEEE1394 device adapter 100 as the transmission end when this automatic control switch recognizes.Then this second built-up circuit 50 is connected to this IEEE1394 interface 30 when receiving the IEEE1394 signal to this IEEE1394 interface 30 and makes the IEEE1394 equipment 80 that is connected with this IEEE1394 device adapter 100 as receiving end when this automatic control switch is unidentified.When this IEEE1394 equipment 80 had external operating voltage to provide, the voltage conversion circuit 200 in this IEEE1394 device adapter also can omit.
The IEEE1394 equipment 80 that the switching selectivity ground of IEEE1394 device adapter 100 of the present invention by its switch element 60 will be connected with this IEEE1394 device adapter 100 is as transmission end or receiving end.When the IEEE1394 equipment of selecting to be connected with this IEEE1394 device adapter 100 80 during as the transmission end, this IEEE1394 device adapter 100 is converted to carrier signal by its digital/analog converter 42 with the IEEE1394 signal of this IEEE1394 equipment 80 outputs, and transmits by this alternating current transmission line 90 after by this first coupling mechanism 43 this carrier signal being coupled to this ac voltage signal.When the IEEE1394 equipment of selecting to be connected with this IEEE1394 device adapter 100 80 during as receiving end, this IEEE1394 device adapter 100 is isolated this carrier signal by its second coupling mechanism 53 with the ac voltage signal that is coupled with carrier signal in this alternating current transmission line 90, and exports this IEEE1394 interface 30 to after by this analog/digital converter 52 this carrier signal being converted to this IEEE1394 signal.So, can realize communication between the IEEE1394 equipment by this IEEE1394 device adapter 100 and this alternating current transmission line 90, thereby improve the usable range of IEEE1394 equipment greatly.
Claims (7)
1. IEEE1394 device adapter, comprise an ac power plug, one IEEE1394 interface, one first built-up circuit, one second built-up circuit and a switch element, this ac power plug is used for grafting one AC Power supply socket and receives ac voltage signal, this IEEE1394 interface is used for the IEEE1394 equipment of pegging graft and receives the IEEE1394 signal, this switch element is connected between this first and second built-up circuit so that this first and second built-up circuit is switched and this first built-up circuit is connected maybe with this IEEE1394 interface this second built-up circuit is connected with this IEEE1394 interface, this first built-up circuit comprises a digital/analog converter and one first coupling mechanism, this second built-up circuit comprises an analog/digital converter and one second coupling mechanism, this first digital/analog converter is connected to this switch element and this first coupling mechanism, this first coupling mechanism also is connected on this ac power plug, this analog/digital converter is connected to this switch element and this second coupling mechanism, this second coupling mechanism also is connected on this ac power plug, when this switch element is connected to this IEEE1394 interface with this first built-up circuit, this first digital/analog converter receives this IEEE1394 equipment by the IEEE1394 signal of IEEE1394 interface output, and this IEEE1394 signal is converted to a first carrier signal, this first coupling mechanism is coupled to this first carrier signal on the ac voltage signal that receives from this ac power plug, and will be coupled with by this AC Power supply socket on the alternating current transmission line that ac voltage signal transfers to this AC Power supply socket is connected of this first carrier signal, when this switch element is connected to this IEEE1394 interface with this second built-up circuit, this second coupling mechanism receives from the ac voltage signal that is coupled with one second carrier signal on this AC power line, and the ac voltage signal that is coupled with this second carrier signal separated to isolate this second carrier signal, this analog/digital converter converts this second carrier signal to the IEEE1394 signal, and exports this IEEE1394 signal to this IEEE1394 equipment by the IEEE1394 interface.
2. IEEE1394 device adapter as claimed in claim 1, it is characterized in that: this first built-up circuit also comprises a compression control chip, and this compression control chip is connected between this switch element and this digital/analog converter and exports this digital/analog converter to after the IEEE1394 signal that receives is compressed package; This second built-up circuit comprises a decompress(ion) control chip, this decompress(ion) control chip is connected between this switch element and this analog/digital converter with this IEEE1394 signal that the IEEE1394 signal compression package that receives is decompressed to decompress out, and by this switch element this IEEE1394 signal is transferred to this IEEE1394 interface.
3. IEEE1394 device adapter as claimed in claim 1, it is characterized in that: this first built-up circuit also comprises an alternating current filter, and this alternating current filter is connected between this first coupling mechanism and this ac power plug so that the ac voltage signal that is coupled with this first carrier signal that exports in this alternating current transmission line is carried out filtering.
4. IEEE1394 device adapter as claimed in claim 1, it is characterized in that: this second built-up circuit also comprises an alternating current filter, this alternating current filter is connected between this ac power plug and this second coupling mechanism, so that the ac voltage signal that is coupled with this second carrier signal by this ac power plug input is carried out filtering.
5. IEEE1394 device adapter as claimed in claim 1, it is characterized in that: this switch element is a manual switch.
6. IEEE1394 device adapter as claimed in claim 1, it is characterized in that: this switch element is an automatic control switch, when this automatic control switch recognizes this IEEE1394 interface IEEE1394 signal when output arranged, this automatic control switch is connected to this IEEE1394 interface with this first built-up circuit; To this IEEE1394 interface IEEE1394 signal when output arranged when this automatic control switch is unidentified, this automatic control switch is connected to this IEEE1394 interface with this second built-up circuit.
7. IEEE1394 device adapter as claimed in claim 1, it is characterized in that: this IEEE1394 device adapter also comprises a voltage conversion circuit, wherein this power-switching circuit comprises an AC/DC converter and a reducing transformer, this AC/DC converter is connected between this ac power plug and this reducing transformer to receive this ac voltage signal, and exporting this reducing transformer to after converting this ac voltage signal to a direct current voltage signal, this reducing transformer also is connected to this IEEE1394 interface the d. c. voltage signal after this step-down is exported to this IEEE1394 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110443665 CN103186495A (en) | 2011-12-27 | 2011-12-27 | IEEE1394 device adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110443665 CN103186495A (en) | 2011-12-27 | 2011-12-27 | IEEE1394 device adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103186495A true CN103186495A (en) | 2013-07-03 |
Family
ID=48677667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110443665 Pending CN103186495A (en) | 2011-12-27 | 2011-12-27 | IEEE1394 device adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103186495A (en) |
-
2011
- 2011-12-27 CN CN 201110443665 patent/CN103186495A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130703 |