CN201425841Y - Recording pen capable of seamless switching of power supply - Google Patents
Recording pen capable of seamless switching of power supply Download PDFInfo
- Publication number
- CN201425841Y CN201425841Y CN2009201079142U CN200920107914U CN201425841Y CN 201425841 Y CN201425841 Y CN 201425841Y CN 2009201079142 U CN2009201079142 U CN 2009201079142U CN 200920107914 U CN200920107914 U CN 200920107914U CN 201425841 Y CN201425841 Y CN 201425841Y
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- control chip
- main control
- circuit
- power supply
- dry cell
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a recording pen capable of seamless switching of a power supply, which comprises a microphone connected to a main control chip through a digital-to-analog converter, wherein, a storage unit used to store audio data as recorded is connected to the main control chip. The utility model is characterized in that a power supply part comprises a power supply and a switching circuit, the power supply comprises a dry battery and a rechargeable battery which are connected to the switching circuit respectively, and the switching circuit and the main control chip are connectedthrough a power cord. In the event of insufficiency in power supply, the dry battery and the rechargeable battery can alternate in an automatic and seamless manner, thereby ensuring constant recordingby the recording pen in switching the power supply and prolonging the constant service life of the recording pen. Furthermore, the use of the rechargeable battery leads to a reduction in the using cost of the device and is more favorable for environmental protection.
Description
Technical field
The utility model relates to a kind of recording pen, relates in particular to the recording pen that a kind of power supply can seamless switching.
Background technology
Recording pen is a kind of of digital voice recorder, is shaped to elongate, and is easy to carry, is to come record audio by the mode of stored digital.Recording pen is stored after simulating signal is converted to digital signal by digital to analog converter by sampling, coding to simulating signal.Even and digital signal is through repeatedly duplicating, acoustic information also can not incur loss, and it is constant to keep intact.
In general, most of digital recording pen is all used AAA type battery No. 7, and some product built-in rechargeable batteries are also arranged now.Adopting the benefit of common batteries is to be convenient for changing, and using the benefit of rechargeable battery is environmental protection.
But under the prior art, after the power supply deficiency, rechargeable battery and dry cell need the user manually to change, and the content that recording pen is recorded is generally important, and manually the process of changing can delay the time of recording, for the user makes troubles.
Under the prior art, a lot of recording pens are used for spot coverage by the reporter, and the scene of interviewing generally speaking is very crowded, be easy to recording pen is lost on the ground, cause dry cell in battery case, to be scattered out, thereby cause the interruption of recording, for reporter's interview brings immeasurable loss.
Therefore, there is defective in prior art, needs further improvement and develops.
The utility model content
The purpose of this utility model is to provide the recording pen that a kind of dry cell and rechargeable battery can seamless switching, to improve the security performance of recording pen in recording process.
The technical solution of the utility model is as follows:
A kind of recording pen of power supply seamless switching comprises by digital to analog converter being connected microphone on the main control chip; Connect the storage unit that is used to store the voice data of recording on the described main control chip; Wherein, the power unit of described recording pen comprises power supply and on-off circuit; Described power supply comprises dry cell and rechargeable battery, and described dry cell and rechargeable battery are connected on the described on-off circuit; Described on-off circuit is connected by power lead with described main control chip; Power supply outage or electricity shortage, described on-off circuit switches to the another one power supply with current power supply.
Compared with prior art, the recording pen of the power supply seamless switching that the utility model provides, comprise two voltages of dry cell and rechargeable battery simultaneously, described dry cell and rechargeable battery can switch by automatic seamless when electricity shortage, can not interrupt recording when having guaranteed the recording pen Switching power, prolong the time of the continuous use of recording pen, simultaneously the use of rechargeable battery, make the use cost of user's economy system, and environmental protection more.
Description of drawings
Fig. 1 is the structural representation of the recording pen of the utility model power supply seamless switching;
Fig. 2 is the synoptic diagram of second embodiment that circuit is provided with between the utility model main control chip and the on-off circuit;
Fig. 3 is the synoptic diagram of the 3rd embodiment that circuit is provided with between the utility model main control chip and the on-off circuit;
Fig. 4 is the synoptic diagram of the 4th embodiment that circuit is provided with between the utility model main control chip and the on-off circuit.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
The recording pen 100 of the power supply seamless switching that the utility model provides as shown in Figure 1, comprises by digital to analog converter 113 being connected microphone 112 on the main control chip 111; Connect the storage unit 114 that is used to store the voice data of recording on the described main control chip 111; The power unit of described recording pen 100 comprises power supply and on-off circuit 121, described power supply comprises dry cell 125 and rechargeable battery 127, described dry cell 125 is built in the dry cell groove of recording pen 100, described rechargeable battery 127 is built in described rechargeable battery groove simultaneously, and described rechargeable battery 127 can be that profile is the lithium ion battery of rectangle; Described dry cell 125 and rechargeable battery 127 are connected on the described on-off circuit 121, and described on-off circuit 121 and described main control chip 111 are connected by power lead.
Described power unit is to providing power supply by described main control chip 111 for described recording pen 100.Described microphone 112 recording audio simulating signals send to described digital to analog converter 113 with the audio analog signals of recording; Described digital to analog converter 113 is converted to audio digital signals with the audio analog signals that receives; Described main control chip 111 stores the audio digital signals in the described digital to analog converter 113 into described storage unit 114, finishes recording and storing process of 100 pairs of voice signals of recording pen.
The described dry cell 125 of described main control chip 111 acquiescences is the power supply of described recording pen 100, and promptly under the situation of acquiescence, the described dry cell 125 of described on-off circuit 121 controls is with the circuit turn-on between the described main control chip 111; Under the situation of described dry cell 125 outages, described on-off circuit 121 cuts off the circuit between described dry cell 125 and the described main control chip 111 automatically, opening described rechargeable battery 127 simultaneously with the circuit turn-on between the described main control chip 111, is described recording pen 100 power supplies by described rechargeable battery 127.Described on-off circuit 121 connects described dry cell 125 with described main control chip 111 circuit, change into the circuit that described rechargeable battery 127 connects with described main control chip 111, it is very short that this changes process time, do not influence the recording of described recording pen 100, is called seamless switching.Recording pen 100 described in the utility model, under the situation of described dry cell 125 or rechargeable battery 127 unexpected disengaging battery cases, can automatically power supply be switched to two outer power supplys, can not influence sound recording, improve the security performance of recording pen because of a kind of outage that comes off of power supply.
The described rechargeable battery 127 of described main control chip 111 acquiescences is the power supply of described recording pen 100, and promptly under the situation of acquiescence, the described rechargeable battery 127 of described on-off circuit 121 controls is with the circuit turn-on between the described main control chip 111; Under the situation of described rechargeable battery 127 outages, described on-off circuit 121 cuts off described rechargeable battery 127 automatically with the circuit between the described main control chip 111, opening described dry cell 125 simultaneously with the circuit turn-on between the described main control chip 111, is described recording pen 100 power supplies by described dry cell 125.
On-off circuit 121 described in the utility model is with between the described main control chip 111 data line arranged side by side with power lead being set, described data line is used for uploading the real-time voltage value to described main control chip 111, or is sent the steering order of Switching power to described on-off circuit by described main control chip 111.On-off circuit 121 described in the utility model can also send the real-time power information of described feed circuit to described main control chip 111 by data line, makes described main control chip 111 learn that the power supply on the feed circuit is dry cell 125 or rechargeable battery 127.
Described power lead is used for to described main control chip 111 power supplies, and described data line is used for reporting to main control chip 111 the real-time voltage value of feed circuit, is perhaps passed on the steering order of Switching power to described on-off circuit 121 by main control chip 111.
The power unit of described recording pen 100 can also comprise being connected the voltage comparison unit 123 on the described main control chip 111 and being connected and is the voltage detection unit 122 of described main control chip 111 reporting real-time magnitudes of voltage on the main control chip 111.Described voltage comparison unit 123 described dry cell 125 of storage and dry cell charge threshold level and the charged battery voltage critical values of described rechargeable battery 127 when electricity shortage, generally, we select described dry cell charge threshold level is 2.2V, and described charged battery voltage critical value is 2.9V.The dry cell charge threshold level of the utility model dry cell power supply deficiency and the charged battery voltage critical value of rechargeable battery powered deficiency can be adjusted according to the different performance of dry cell and rechargeable battery, do not limit here.Described voltage comparison unit 123 can also be built in described main control chip 111.
First embodiment that circuit connects between described main control chip 111 and the on-off circuit 121 as shown in Figure 1, directly connect power lead between described main control chip 111 and the on-off circuit 121, connect voltage detection unit 122 on the data line between described main control chip 111 and the on-off circuit 121.
Described main control chip 111 is set to give tacit consent to power supply with described dry cell 125, and described on-off circuit 121 is made as the circuit turn-on state with described dry cell 125.Described voltage detection unit 122 sends to described main control chip 111 with the real-time voltage value.Described main control chip 111 is the information of the dry cell 125 of acquiescence according to real-time voltage value and described power supply, obtains the dry cell charge threshold level of described dry cell 125 from described voltage comparison unit 123; The dry cell charge threshold level obtained is compared with the real-time voltage value that receives, if described real-time voltage value more than or equal to described dry cell charge threshold level, described main control chip 111 does not make a change power unit; Described real-time voltage value is less than described dry cell charge threshold level, and described main control chip 111 sends the steering order that power supply is switched by described voltage detection unit 122 to described on-off circuit 121.Described on-off circuit 121 is according to the steering order that power supply is switched that receives, and the circuit of described rechargeable battery 127 is set to the circuit turn-on state, is described recording pen 100 power supplies by described rechargeable battery 127.
Described main control chip 111 is set to give tacit consent to power supply with described rechargeable battery 127, and described on-off circuit 121 is made as the circuit turn-on state with described rechargeable battery 127.Described voltage detection unit 122 sends to described main control chip 111 with the real-time voltage value.Described main control chip 111 obtains the charged battery voltage critical value of described rechargeable battery 127 according to the information of real-time voltage value and power supply acquiescence rechargeable battery 127 from described voltage comparison unit 123; The charged battery voltage critical value obtained is compared with the real-time voltage value that receives, if described real-time voltage value more than or equal to described charged battery voltage critical value, described main control chip 111 does not make a change power unit; Described real-time voltage value is less than described charged battery voltage critical value, and described main control chip 111 sends the steering order that power supply switches by described voltage detection unit 122 to described on-off circuit 121.Described on-off circuit 121 is according to the steering order of the power supply that receives, and the circuit of described dry cell 125 is set to the circuit turn-on state.
The power information of the feed circuit that main control chip 111 described in the utility model can also send according to described on-off circuit 121 is made the steering order that power supply switches.If the power supply of concrete feed circuit is a dry cell 125, described main control chip 111 is according to the dry cell charge threshold level of real-time voltage value and described dry cell 125; The dry cell charge threshold level obtained is compared with the real-time voltage value that receives, if described real-time voltage value more than or equal to described dry cell charge threshold level, described main control chip 111 does not make a change power unit; Described real-time voltage value is less than described dry cell charge threshold level, and described main control chip 111 sends the steering order that power supply switches by described voltage detection unit 122 to described on-off circuit 121.If the information to described on-off circuit 121 transmissions of described main control chip 111 is that the power supply of feed circuit is a rechargeable battery 127, described main control chip 111 sends the steering order that corresponding power supply switches according to real-time voltage value and charged battery voltage critical value.
First embodiment that circuit connects between main control chip 111 described in the utility model and the on-off circuit 121 is first embodiment of the utility model recording pen 100 just, first embodiment of the utility model is provided with two kinds of power supplys simultaneously in recording pen, when a kind of electric quantity of power supply is not enough, recording pen can switch to power supply the another one power supply automatically, realizes the seamless switching of power supply.Recording pen of the present utility model at first both can use dry cell power supply, also can following use rechargeable battery poweredly, had saved use cost; Secondly, solve present recording pen dry cell power down shutdown afterwards and interrupted the recording problem; At last, prolonged the time that recording pen uses continuously.
Second embodiment that circuit connects between main control chip 111 described in the utility model and the on-off circuit 121 be second embodiment of the utility model recording pen 100 just, as shown in Figure 2.Described second embodiment is with the difference of first embodiment, the circuit 121 of described switch comprises dry cell switch and the rechargeable battery switch that is connected on the microcontroller, described dry cell switch connects dry cell 125, and described rechargeable battery switch connects rechargeable battery 127.The data line and the power lead of described on-off circuit 121 ends are connected respectively on the described microcontroller.
Described main control chip 111 is set to give tacit consent to power supply with described dry cell 125, and the microcontroller of described on-off circuit 121 disconnects described dry cell switch closure with described rechargeable battery switch, and the circuit that is about to described dry cell 125 is made as circuit turn-on.Described power supply is given described main control chip 111 by the power lead on the microcontroller with electric energy transmitting by described microcontroller.Described voltage detection unit 122 sends to described main control chip 111 by described microcontroller with the real-time voltage value of surveying.Described main control chip 111 is the information of the dry cell 125 of acquiescence according to real-time voltage value and described power supply, obtains the dry cell charge threshold level of described dry cell 125 from described voltage comparison unit 123; The dry cell charge threshold level obtained is compared with the real-time voltage value that receives, if described real-time voltage value more than or equal to described dry cell charge threshold level, described main control chip 111 does not make a change power unit; Described real-time voltage value is less than described dry cell charge threshold level, and described main control chip 111 sends the steering order that power supply switches by described voltage detection unit 122 to described on-off circuit 121.The steering order that described microcontroller switches according to the power supply that receives, described dry cell switch terminals is opened, with described rechargeable battery switch closure, make the circuit of described rechargeable battery 127 be made as circuit turn-on, be described recording pen 100 power supplies by described rechargeable battery 127.
Described main control chip 111 is set to give tacit consent to power supply with described rechargeable battery 127, and described on-off circuit 121 disconnects described dry cell switch, and described rechargeable battery closure just is made as the circuit turn-on state with described rechargeable battery 127.Described power supply also is to give described main control chip 111 by the power lead on the described microcontroller with electric energy transmitting by described microcontroller.Described voltage detection unit 122 detects the real-time voltage value by microcontroller, and the real-time voltage value that detection obtains is sent to described main control chip 111.Described main control chip 111 is the information of power supply according to real-time voltage value and power supply acquiescence rechargeable battery 127, obtains the charged battery voltage critical value of described rechargeable battery 127 from described voltage comparison unit 123; The charged battery voltage critical value obtained is compared with the real-time voltage value that receives, if described real-time voltage value more than or equal to described charged battery voltage critical value, described main control chip 111 does not make a change power unit; Described real-time voltage value is less than described charged battery voltage critical value, and described main control chip 111 sends the steering order that power supply switches by described voltage detection unit 122 to described on-off circuit 121.Described on-off circuit 121 disconnects described rechargeable battery according to the steering order of the power supply that receives, and with described dry cell switch closure, the circuit that is about to described dry cell is set to the circuit turn-on state.
The 3rd embodiment that circuit connects between main control chip 111 described in the utility model and the on-off circuit 121 be the 3rd embodiment of the utility model recording pen 100 just, as shown in Figure 3.Described the 3rd embodiment is with the difference of embodiment two, the circuit of the circuit of described dry cell 125 and described rechargeable battery 127 is not by described microcontroller, give described main control chip 111 by the power lead on the described microcontroller with electric energy transmitting, but described dry cell switch and rechargeable battery switch are connected to directly on the power lead on the described on-off circuit.Described dry cell switch and rechargeable battery switch also are connected on the described microcontroller simultaneously, are used to receive that described microcontroller is opened or closed steering order.Among the 3rd embodiment of described recording pen, described circuit is directly given described main control chip 111 by power lead with electric energy transmitting not by microcontroller.Described voltage detection unit 122 still detects the real-time voltage value by described microcontroller, described microcontroller switches described dry cell switch and rechargeable battery switch according to the steering order of Switching power on the data line, detailed process is identical with embodiment two, repeats no more here.
The 4th embodiment that circuit connects between main control chip 111 described in the utility model and the on-off circuit 121 be the 4th embodiment of the utility model recording pen 100 just, as shown in Figure 4.Described main control chip 111 and on-off circuit 121 are provided with a power lead and two data lines, comprise described microcontroller with first data line between the described main control chip 111, and second data line between described voltage detection unit 122 and the main control chip 111.Described first data line is used for described main control chip 111 and sends the steering order that power supply switches to described microcontroller.Described dry cell switch and rechargeable battery switch all directly are connected on the power lead, are described main control chip 111 power supplies.Described dry cell switch and rechargeable battery switch also are connected on the described microcontroller simultaneously, so that receive opening or closed steering order of described microcontroller transmission.Described voltage detection unit 122 1 ends are connected on the power lead two outer ends and are connected on the described main control chip 111 by second data line, the real-time voltage value on the power leads is surveyed in described voltage detection unit 122, and the real-time voltage value is issued described main control chip 111 by described second data line.In described the 4th specific embodiment, the function singleness of described microcontroller only need be controlled the state of dry cell switch and rechargeable battery switch according to the steering order of described main control chip 111.Described microcontroller is according to the process of the steering order work of described main control chip 111 power supplys switching, and is described with embodiment two, repeats no more here.
Described microcontroller among second embodiment described in the utility model, the 3rd embodiment and the 4th embodiment also can send to the power information of feed circuit described main control chip 111 in real time, and the steering order of making the power supply switching for described main control chip 111 provides foundation.
The recording pen of the power supply seamless switching that the utility model provides, comprise two power supplys of dry cell and rechargeable battery simultaneously, described dry cell and rechargeable battery can switch by automatic seamless when electricity shortage, can not interrupt recording when having guaranteed the recording pen Switching power, prolonged the time of the continuous use of recording pen, the use of rechargeable battery simultaneously makes the use cost of user's economy system and environmental protection more.
Should be understood that above-mentioned statement at the utility model preferred embodiment is comparatively detailed, can not therefore think the restriction to the utility model scope of patent protection, scope of patent protection of the present utility model should be as the criterion with claims.
Claims (16)
1, a kind of recording pen of power supply seamless switching comprises by digital to analog converter being connected microphone on the main control chip; Connect the storage unit that is used to store the voice data of recording on the described main control chip; It is characterized in that the power unit of described recording pen comprises power supply and on-off circuit; Described power supply comprises dry cell and rechargeable battery, and described dry cell and rechargeable battery are connected on the described on-off circuit; Described on-off circuit is connected by power lead with described main control chip; Power supply outage or electricity shortage, described on-off circuit switches to the another one power supply with current power supply.
2, recording pen according to claim 1 is characterized in that, described main control chip is given tacit consent to the power supply that described dry cell is a recording pen, and described on-off circuit is provided with described dry cell with the circuit turn-on between the described main control chip; Described dry cell outage, described on-off circuit are cut off described dry cell automatically with the circuit between the described main control chip, open described rechargeable battery simultaneously with the circuit between the described main control chip;
Described main control chip is given tacit consent to the power supply that described rechargeable battery is a recording pen, and described on-off circuit is provided with described rechargeable battery with the circuit turn-on between the described main control chip; Described rechargeable battery outage, described on-off circuit are cut off described rechargeable battery automatically with the circuit between the described main control chip, open described dry cell simultaneously with the circuit between the described main control chip.
3, recording pen according to claim 2, it is characterized in that, also be provided with and power lead data line arranged side by side between described main control chip and the described on-off circuit, described data line is used for the power information of described on-off circuit to described main control chip transmission feed circuit, and described main control chip sends the steering order of Switching power to described on-off circuit.
4, recording pen according to claim 3, it is characterized in that, described power unit also comprises voltage comparison unit and the voltage detection unit that is connected on the described main control chip, described voltage comparison unit is stored described dry cell and dry cell charge threshold level and the charged battery voltage critical value of described rechargeable battery when electricity shortage, and described voltage detection unit is the real-time voltage value that described main control chip reports feed circuit.
5, recording pen according to claim 4, described main control chip is given tacit consent to the power supply that described dry cell is a recording pen, described main control chip is real-time voltage value and dry cell charge threshold level relatively, described real-time voltage value is more than or equal to described dry cell charge threshold level, and described main control chip does not make a change power unit; Described real-time voltage value is less than described dry cell charge threshold level, and described main control chip sends the steering order of Switching power to described on-off circuit;
Described main control chip is given tacit consent to the power supply that described rechargeable battery is a recording pen, described main control chip is real-time voltage value and charged battery voltage critical value relatively, described real-time voltage value is more than or equal to described charged battery voltage critical value, and described main control chip does not make a change power unit; Described real-time voltage value is less than described charged battery voltage critical value, and described main control chip sends the steering order of Switching power to described on-off circuit.
6, recording pen according to claim 4, it is characterized in that, described control chip is according to the power information of the real-time feed circuit that send of described on-off circuit, transfer the supplying cell voltage critical, described real-time voltage value is more than or equal to described supplying cell charge threshold level, and described main control chip does not make a change power unit; Described real-time voltage value is less than described supplying cell charge threshold level, and described main control chip is made the steering order that power supply switches.
7, recording pen according to claim 5 is characterized in that, described voltage detection unit one end is connected on the data line of described main control chip, and an other end is connected on the data line with described on-off circuit.
8, recording pen according to claim 7, it is characterized in that, described main control chip is given tacit consent to the power supply that described dry cell is a recording pen, described on-off circuit receives the steering order of Switching power by voltage probe unit on the data line, cut off described dry cell with the circuit between the described main control chip, open described rechargeable battery simultaneously with the circuit between the described main control chip;
Described main control chip is given tacit consent to the power supply that described rechargeable battery is a recording pen, described on-off circuit receives the steering order of Switching power by voltage probe unit on the data line, cut off described rechargeable battery with the circuit between the described main control chip, open described dry cell simultaneously with the circuit between the described main control chip.
9, recording pen according to claim 7 is characterized in that, described on-off circuit comprises dry cell switch and the rechargeable battery switch that is connected on the microcontroller, and described dry cell switch connects dry cell, and described rechargeable battery switch connects rechargeable battery.
10, recording pen according to claim 9 is characterized in that, the data line at described power lead and place, voltage detection unit is connected on the microcontroller of described on-off circuit; Described power supply is powered to described main control chip by described microcontroller; Described power supply probe unit is surveyed the real-time voltage value by described microcontroller, and is transferred to described main control chip by data line; Described main control chip sends the steering order that power supply is switched by the data line at place, described voltage detection unit to described on-off circuit.
11, recording pen according to claim 9 is characterized in that, described dry cell switch and rechargeable battery switch directly are connected respectively on the power lead between described on-off circuit and the described main control chip, are connected to simultaneously on the described microcontroller; The data line at place, described voltage detection unit is connected on the microcontroller of described on-off circuit; Directly to described main control chip power supply, described power supply probe unit is surveyed the real-time voltage value by described microcontroller to described power supply, and is transferred to described main control chip by data line by corresponding switch; Described main control chip sends the steering order that power supply is switched by the data line at place, described voltage detection unit to described microcontroller; Described microcontroller is controlled described dry cell switch and rechargeable battery switch opens or closure according to the steering order that power supply switches.
12, recording pen according to claim 9 is characterized in that, the data line between described main control chip and the described on-off circuit comprises first data line and second data line; Described dry cell switch and rechargeable battery switch directly are connected respectively on the power lead on the described on-off circuit, are described control chip power supply by described power lead; Described voltage detection unit one end is connected on the power lead, and the outer end of order is connected described main control chip by second data line; Described voltage detection unit records the real-time voltage value from power lead, and described real-time voltage value is sent to described main control chip by described second data line; Described microcontroller is connected on the described main control chip by first data line, is used to receive the steering order that described control chip power supply switches; Described dry cell switch and rechargeable battery switch also are connected on the described microcontroller, and described microcontroller is according to described dry cell switch of described power supply switching controls instruction control and rechargeable battery switch opens or close.
13, according to claim 10,11 or 12 described recording pens, it is characterized in that, described main control chip is given tacit consent to the power supply that described dry cell is a recording pen, described microcontroller receives the steering order of Switching power, cut off described dry cell switch, close described rechargeable battery switch, make the circuit turn-on between described rechargeable battery and the described main control chip;
Described main control chip is given tacit consent to the power supply that described rechargeable battery is a recording pen, described microcontroller receives the steering order of Switching power, cut off described rechargeable battery switch, closed described dry cell switch makes the circuit turn-on between described dry cell and the described main control chip.
14, recording pen according to claim 13 is characterized in that, described microcontroller sends the information of power supply to described main control chip.
15, recording pen according to claim 14 is characterized in that, first DC converter is set between described dry cell and the on-off circuit; Second DC converter is set between described rechargeable battery and the on-off circuit.
16, recording pen according to claim 15 is characterized in that, described first DC converter and second DC converter adopt the MOS device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201079142U CN201425841Y (en) | 2009-05-04 | 2009-05-04 | Recording pen capable of seamless switching of power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201079142U CN201425841Y (en) | 2009-05-04 | 2009-05-04 | Recording pen capable of seamless switching of power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201425841Y true CN201425841Y (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201079142U Expired - Lifetime CN201425841Y (en) | 2009-05-04 | 2009-05-04 | Recording pen capable of seamless switching of power supply |
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| CN (1) | CN201425841Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104754484A (en) * | 2013-12-27 | 2015-07-01 | Gn瑞声达A/S | Hearing instrument with switchable power supply voltage |
| CN105004905A (en) * | 2015-07-28 | 2015-10-28 | 苏州宏展信息科技有限公司 | Recording pen current detection device based on radio frequency receiving |
-
2009
- 2009-05-04 CN CN2009201079142U patent/CN201425841Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104754484A (en) * | 2013-12-27 | 2015-07-01 | Gn瑞声达A/S | Hearing instrument with switchable power supply voltage |
| CN104754484B (en) * | 2013-12-27 | 2019-11-08 | Gn瑞声达A/S | Hearing device with switchable power supply voltage |
| CN105004905A (en) * | 2015-07-28 | 2015-10-28 | 苏州宏展信息科技有限公司 | Recording pen current detection device based on radio frequency receiving |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: AIGO ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING AIGO DIGITAL STORAGE TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100080 Beijing, North Fourth Ring Road West, No. 58, International Building, ideal level 11, Patentee after: Aigo Electronic Technology Co., Ltd. Address before: 100080 Beijing, North Fourth Ring Road West, No. 58, International Building, ideal level 11, Patentee before: Beijing Aigo Digital Storage Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100317 |