CN1407834A - Method for realizing transmission of time division multichannel pulse modified signals in ether network - Google Patents
Method for realizing transmission of time division multichannel pulse modified signals in ether network Download PDFInfo
- Publication number
- CN1407834A CN1407834A CN 01126569 CN01126569A CN1407834A CN 1407834 A CN1407834 A CN 1407834A CN 01126569 CN01126569 CN 01126569 CN 01126569 A CN01126569 A CN 01126569A CN 1407834 A CN1407834 A CN 1407834A
- Authority
- CN
- China
- Prior art keywords
- ethernet
- bag
- time division
- modulation signal
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 title abstract 4
- 230000005540 biological transmission Effects 0.000 title description 9
- 125000004122 cyclic group Chemical group 0.000 claims description 40
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 4
- 238000012795 verification Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000012163 sequencing technique Methods 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A method for transmitting time division multi-channel pulse code modulating signals in the ether network is carried out by packetizing the time division multi-channel pulse code modulating signals at the input end, and then depacketizing at the buffer area of the receiving end. It can be used to transmit voice business or data business with control and process of delay jitter and packet lost.
Description
Technical field
The present invention relates to the transmission method of a kind of time division multichannel (TDM) pulse code modulation (pcm) signal, particularly time division multichannel PCM signal is passed through conversion, the implementation method that enables to transmit in Ethernet.
Background technology
At present, between digital program controlled telephone exchange and other telephone subscriber's access devices or and transmission equipment between be to carry out communication by time-devision system (TDM) multiplex mode of paired pulses modulation signals, time division multichannel PCM signal transmits in strict accordance with synchronous sequence.Along with the proportion of data service in backbone communications is increasing, just require the fusion of speech business and data service, and data service mainly be by the mode of packet (PACKET) transmit with the exchange, packet be transmitted as asynchronous system, have bigger delay jitter and the packet loss phenomenon arranged, therefore research is transmitted time division multichannel PCM signal by packet how to eliminate the influence of delay jitter and packet loss is significant.Ethernet is a kind of data packet transmission mode of extensive use, has networking conveniently, and is simple in structure, low cost and other advantages.Along with the utilization of Ethernet in broadband metropolitan area network, between digital program controlled telephone exchange and other telephone subscriber's access devices or with transmission equipment between be connected as can helping networking flexibility and reduce construction investment and the fusion of network by Ethernet.
Summary of the invention
The technical problem that the present invention solves is that the method that provides a kind of time division multichannel pulse modified modulation signal to transmit in Ethernet is provided, make time division multichannel PCM signal can in Ethernet, transmit easily, be treated to former time division multichannel PCM signal via reduction again at receiver side through conversion process.
The performing step of the implementation method that a kind of time division multichannel pulse modified modulation signal of the present invention transmits in Ethernet is as follows:
Step 1: deposit the time division multichannel pulse modified modulation signal of each bar in buffer area frame by frame by corresponding deserialize first-in first-out buffer (FIFO);
Step 2: the signal data of the buffer area in the step 1 is formed the Ethernet data bag;
Step 3: the receiving terminal that the Ethernet data bag of structure in the step 2 is sent to Ethernet;
Step 4: the Ethernet data bag that the receiving terminal receiving end/sending end is sent;
Step 5: receiving terminal extracts Ethernet bag data field data, and is kept in the reception buffer area;
Step 6: the signal data in receiving buffer area with the time division multichannel pulse modified modulation signal correspondence of each bar passes through corresponding parallel change serial first-in first-out buffer respectively, revert to time division multichannel pulse modified modulation signal, and empty corresponding data field, finish the signal transmission in Ethernet.
The corresponding deserialize first-in first-out buffer of the time division multichannel pulse modified modulation signal of described each bar and the parallel serial first-in first-out buffer that becomes.
In the described step 2, first general: N
1Sequence number N, a number of the information agent that the frame of individual time division multichannel pulse modified modulation signal constitutes, the time division multichannel pulse modified modulation signal of described each bar of expression are N
2The cyclic sequence number of expression Ethernet bag sequencing form Ethernet bag data field, form an Ethernet data bag in conjunction with the other parts byte that constitutes the Ethernet bag again.
Receiving terminal receives that not doing verification behind the Ethernet bag extracts in the data field data and cyclic sequence number in the described step 5, and data is deposited in the reception buffer area of correspondence by the sequence number of the time division multichannel pulse modified modulation signal of each bar of the expression in the data field and bag cyclic sequence number.
The number N of the frame of the time division multichannel pulse modified modulation signal of an Ethernet data bag of described structure
1Value be not less than 2.
Described each reception buffer area all is divided into N
3Individual reception buffer memory subarea, N
2Be not less than 3 N for value
3Multiple, the information agent of Ethernet bag is put into N respectively according to bag cyclic sequence order
3In the individual reception buffer memory subarea, bag cyclic sequence number continuous N is placed in each subarea
2/ N
3The information agent of individual Ethernet bag.
Set a reception buffer memory subarea and finish pointer, when in receiving buffer memory subarea X, receiving the Ethernet bag of last cyclic sequence of this subarea number or receiving the Ethernet bag of any cyclic sequence number among the X+1 of buffer memory subarea, if among the X-1 of buffer memory subarea data are arranged, then receive the buffer memory subarea and finish pointed buffer memory subarea X-1; If among the X-1 of buffer memory subarea data are not arranged, then, receive the buffer memory subarea and finish pointed buffer memory subarea X when the Ethernet bag of last cyclic sequence among the X+1 of buffer memory subarea number or when receiving the Ethernet bag of any cyclic sequence number among the X+2 of buffer memory subarea.
Described X is N
3-1 o'clock, then X-1 was N
3-2, X+1 is N
3, X+2 is 1; As working as X is N
3The time, then Shang Mian X-1 is N
3-1, X+1 is 1, and X+2 is 2.
When certain buffer memory subarea of pointed is finished in described reception buffer memory subarea, if the Ethernet bag of some cyclic sequence in this subarea number do not receive, then fill up with a specific noise bag.
When receiving the cyclic sequence Ethernet bag of repetition before described reception buffer memory subarea Data Receiving is finished, then refresh previous bag with a back bag that repeats.
Description of drawings
Fig. 1 is the implementation method schematic diagram that the present invention is transmitted in Ethernet time division multichannel PCM signal;
Fig. 2 is the method for reseptance flow chart that time division multichannel pulse modified digital signal of the present invention is transmitted in Ethernet;
Fig. 3 is the sending method flow chart that time division multichannel pulse modified digital signal of the present invention is transmitted in Ethernet;
Embodiment
Simply introduce the inventive method flow process below, with reference to implementation method schematic diagram of the present invention shown in Figure 1, there is N bar TDM-PCM signal to be input in the string and conversion FIFO of transmitting terminal, form the Ethernet bag that can in Ethernet, transmit via sending to handle, transmission by Ethernet arrives the Ethernet receiving terminal with exchange again, the TDM-PCM signal message main body of forming the Ethernet bag is kept at receives in the buffer area, receive processing then and deliver to data corresponding and string conversion FIFO is reduced into the TDM-PCM signal.
Transmission and exchange for Ethernet are two-way communication circuits, and implementation method of the present invention is identical to the processing mode of uplink and downlink direction, and the realization of one of them direction only has been described in Fig. 1.
Further specify below by a concrete example.The 1st time division multichannel PCM speed among Fig. 1 is 2.048 MBPSs, and a frame duration is 125 microseconds, 32 bytes of totally 32 time slots; With reference to shown in Figure 2 transmitting terminal with this TDM-PCM signal via the string and the conversion FIFO, get N
1=8, N
2=12, N
3=4; The head of 2 bytes is the sequence number of this time division multichannel PCM signal, and sequence number N is 01; The Ethernet propagation delay time is 1 millisecond.Like this, an Ethernet bag is a 22+2+256+2=282 byte.Finish time division multichannel PCM signal and enter the transmission fifo buffer, be packaged into the Ethernet bag then and send upward Ethernet.
With reference to shown in Figure 3, at receiving terminal, receiving terminal receives and do not do sequence number, 256 byte datas and the bag cyclic sequence number that the time division multichannel PCM signal in the data field is extracted in verification behind the Ethernet bag, and data deposited in the reception buffer area of corresponding 12 256 byte data sizes by the sequence number of time-division multichannel PCM and bag cyclic sequence number.
Because exist the time-delay of each bag to differ and the packet loss phenomenon in the Ethernet transmission, for eliminating these influences, so be divided into 1,2,3,4 districts accepting buffer area, every district can deposit 3 data in the Ethernet bag.Determine that one receives decision rule:
Starting stage, if district's Data Receiving finish pointer when the bag of last sequence number 6 in 2 districts be received or 3 districts in any cyclic sequence number wrap when being received, this sensing 1 district of data is arranged in 1 district; 1 district's free of data then the bag of last cyclic sequence in 3 districts numbers 9 be received or 4 districts in any cyclic sequence number bag be received and point to 2 districts when judging; 2 district's free of data then be received with the bag of last cyclic sequence in 4 districts numbers 12 or 1 district in any cyclic sequence number bag to be received be to judge to point to 3 districts; 3 district's free of data then be received with the bag of last cyclic sequence in 1 district numbers 3 or 2 districts in any cyclic sequence number bag to be received be to judge to point to 4 districts that circulation is mobile then.
When in 1 district, data being arranged, when the bag of last cyclic sequence in 2 districts numbers 6 be received or 3 districts in any cyclic sequence number bag be received, judge that then 1 district's Data Receiving finishes, if at this moment there is the Bao Wei of some sequence number to receive and to handle by packet loss in 1 district, fill up with a specific noise bag, then 1 district's data are put into No. 1 and the first-in first-out buffer of string conversion goes back to and reverts to No. 1 multichannel pulse modified digital signal and empty 1 district's data simultaneously.If receive the cyclic sequence number bag that repeats in this district before certain district's Data Receiving is not finished, then refresh Jiu Bao with the bag of receiving at last.
Equally, 2 district's Data Receiving finish that bag with last cyclic sequence in 3 districts numbers 9 is received or 4 districts in any cyclic sequence number bag to be received be to judge; 3 district's Data Receiving finish that bag with last cyclic sequence in 4 districts numbers 12 is received or 1 district in any cyclic sequence number bag to be received be to judge; 4 district's Data Receiving finish that bag with last cyclic sequence in 1 district numbers 3 is received or 2 districts in any cyclic sequence number bag to be received be to judge; Packet loss is handled with 1 district consistent with receiving duplicate packages.
The average delay of system equals N
1Taking advantage of 125 microseconds to add 2 takes advantage of 125 to take advantage of N
1Take advantage of N
2Remove N
3Microsecond adds the Ethernet propagation delay time again, and the average delay of system equals 8 and takes advantage of 125 microseconds to add 2 to take advantage of 125 to take advantage of 8 to take advantage of 12 to remove 4 microseconds and add 1 millisecond=8 milliseconds of Ethernet propagation delay times again, be acceptable in this example.
Be equal to for other sequence number time division multichannels PCM Signal Processing process and top method, just repeat no more at this.
Owing to have delay variation and packet loss in the Ethernet, may produce error code.If but in the future the Ethernet bandwidth is enough and Ethernet switch is clog-free, and set suitable N
1, N
2, N
3Value just can reduce the error rate greatly.Because the method that adopts the noise bag to fill up to packet loss, under the not serious situation of packet loss, be negligible to user's influence.
Claims (10)
1. the implementation method that time division multichannel pulse modified modulation signal transmits in Ethernet is characterized in that, realizes that the step of described method is:
Step 1: deposit the time division multichannel pulse modified modulation signal of each bar in buffer area frame by frame by corresponding deserialize first-in first-out buffer (FIFO);
Step 2: the signal data of the buffer area in the step 1 is formed the Ethernet data bag;
Step 3: the receiving terminal that the Ethernet data bag of structure in the step 2 is sent to Ethernet;
Step 4: the Ethernet data bag that the receiving terminal receiving end/sending end is sent;
Step 5: receiving terminal extracts Ethernet bag data field data, and is kept in the reception buffer area;
Step 6: the signal data in receiving buffer area with the time division multichannel pulse modified modulation signal correspondence of each bar passes through corresponding parallel change serial first-in first-out buffer respectively, revert to time division multichannel pulse modified modulation signal, and empty corresponding data field, finish the signal transmission in Ethernet.
2. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 1 transmits in Ethernet, it is characterized in that the corresponding deserialize first-in first-out buffer of the time division multichannel pulse modified modulation signal of described each bar and the parallel serial first-in first-out buffer that becomes.
3. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 1 transmits in Ethernet is characterized in that, in the described step 2, and first general: N
1Sequence number N, a number of the information agent that the frame of individual time division multichannel pulse modified modulation signal constitutes, the time division multichannel pulse modified modulation signal of described each bar of expression are N
2The cyclic sequence number of expression Ethernet bag sequencing form Ethernet bag data field, form an Ethernet data bag in conjunction with the other parts byte that constitutes the Ethernet bag again.
4. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 3 transmits in Ethernet is characterized in that, the number N of the frame of the time division multichannel pulse modified modulation signal of an Ethernet data bag of described structure
1Value be not less than 2.
5. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 3 transmits in Ethernet, it is characterized in that, receiving terminal receives that not doing verification behind the Ethernet bag extracts in the data field data and cyclic sequence number in the described step 5, and data is deposited in the reception buffer area of correspondence by the sequence number of the time division multichannel pulse modified modulation signal of each bar of the expression in the data field and bag cyclic sequence number.
6. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 5 transmits in Ethernet is characterized in that, described each reception buffer area all is divided into N
3Individual reception buffer memory subarea, N
2Be N
3Multiple, the information agent of Ethernet bag is put into N respectively according to bag cyclic sequence order
3In the individual reception buffer memory subarea, bag cyclic sequence number continuous N is placed in each subarea
2/ N
3The information agent of individual Ethernet bag.
7. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 6 transmits in Ethernet, it is characterized in that, set a reception buffer memory subarea and finish pointer, when in receiving buffer memory subarea X, receiving the Ethernet bag of last cyclic sequence of this subarea number or receiving the Ethernet bag of any cyclic sequence number among the X+1 of buffer memory subarea, if among the X-1 of buffer memory subarea data are arranged, then receive the buffer memory subarea and finish pointed buffer memory subarea X-1; If do not have data among the X-1 of buffer memory subarea, then, receive the buffer memory subarea and finish pointed buffer memory subarea X when the Ethernet bag of last cyclic sequence among the X+1 of buffer memory subarea number or when receiving the Ethernet bag of any cyclic sequence number among the X+2 of buffer memory subarea.
8. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 7 transmits in Ethernet is characterized in that described X is N
3-1 o'clock, then X-1 was N
3-2, X+1 is N
3, X+2 is 1; As working as X is N
3The time, then Shang Mian X-1 is N
3-1, X+1 is 1, and X+2 is 2.
9. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 7 transmits in Ethernet, it is characterized in that, when certain buffer memory subarea of pointed is finished in described reception buffer memory subarea, if the Ethernet bag of some cyclic sequence in this subarea number is not received, then fill up with a specific noise bag.
10. the implementation method that a kind of time division multichannel pulse modified modulation signal according to claim 7 transmits in Ethernet, it is characterized in that, when receiving the cyclic sequence Ethernet bag of repetition before described reception buffer memory subarea Data Receiving is finished, then refresh previous bag with a back bag that repeats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011265698A CN100341303C (en) | 2001-08-24 | 2001-08-24 | Method for realizing transmission of time division multichannel pulse modified signals in ether network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011265698A CN100341303C (en) | 2001-08-24 | 2001-08-24 | Method for realizing transmission of time division multichannel pulse modified signals in ether network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1407834A true CN1407834A (en) | 2003-04-02 |
| CN100341303C CN100341303C (en) | 2007-10-03 |
Family
ID=4666581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011265698A Expired - Lifetime CN100341303C (en) | 2001-08-24 | 2001-08-24 | Method for realizing transmission of time division multichannel pulse modified signals in ether network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100341303C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426784C (en) * | 2004-06-25 | 2008-10-15 | 腾讯科技（深圳）有限公司 | Solution of network shake |
| CN1941819B (en) * | 2005-09-29 | 2011-04-20 | 北京格林威尔科技发展有限公司 | Method and system for transmitting speech service in Ethernet |
| CN104461399A (en) * | 2014-12-19 | 2015-03-25 | 上海新储集成电路有限公司 | Writing cache system of nonvolatile memory and data read-write method thereof |
| CN110225211A (en) * | 2019-05-07 | 2019-09-10 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Multichannel pulse modified modulating voice exchange system and method |
| CN113489565A (en) * | 2021-08-09 | 2021-10-08 | 四川灵通电讯有限公司 | Multi-channel service shared channel transmission system based on synchronous time division multiplexing system |
| CN114978960A (en) * | 2022-08-01 | 2022-08-30 | 广州赛宝计量检测中心服务有限公司 | Ethernet frame header trigger |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0722237A1 (en) * | 1994-12-20 | 1996-07-17 | International Business Machines Corporation | Method of transmitting voice signals in a packet switching network |
| US6574242B1 (en) * | 1998-06-10 | 2003-06-03 | Merlot Communications, Inc. | Method for the transmission and control of audio, video, and computer data over a single network fabric |
| EP1255385A3 (en) * | 1998-12-08 | 2002-11-13 | Tellabs Operations, Inc. | Signal processing system and hybrid switching |
| US6396847B1 (en) * | 1999-06-03 | 2002-05-28 | Fujitsu Networks Communications, Inc. | Dialable data services/TDM bandwidth management |
| KR100296399B1 (en) * | 1999-07-28 | 2001-07-12 | 서평원 | InternetPhone Gateway System |
| KR20010046270A (en) * | 1999-11-11 | 2001-06-15 | 서평원 | Internet Telephony Gateway System For Providing No.7 Signaling |
| JP2001167022A (en) * | 1999-12-09 | 2001-06-22 | Nec Eng Ltd | Data transfer system |
| CN1151640C (en) * | 1999-12-29 | 2004-05-26 | 艾默生网络能源有限公司 | Data enchange device and method |
-
2001
- 2001-08-24 CN CNB011265698A patent/CN100341303C/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426784C (en) * | 2004-06-25 | 2008-10-15 | 腾讯科技（深圳）有限公司 | Solution of network shake |
| CN1941819B (en) * | 2005-09-29 | 2011-04-20 | 北京格林威尔科技发展有限公司 | Method and system for transmitting speech service in Ethernet |
| CN104461399A (en) * | 2014-12-19 | 2015-03-25 | 上海新储集成电路有限公司 | Writing cache system of nonvolatile memory and data read-write method thereof |
| CN110225211A (en) * | 2019-05-07 | 2019-09-10 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Multichannel pulse modified modulating voice exchange system and method |
| CN110225211B (en) * | 2019-05-07 | 2021-02-26 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Multichannel pulse code modulation voice exchange system and method |
| CN113489565A (en) * | 2021-08-09 | 2021-10-08 | 四川灵通电讯有限公司 | Multi-channel service shared channel transmission system based on synchronous time division multiplexing system |
| CN113489565B (en) * | 2021-08-09 | 2023-11-24 | 四川灵通电讯有限公司 | Multi-channel service shared channel transmission system based on synchronous time division multiplexing system |
| CN114978960A (en) * | 2022-08-01 | 2022-08-30 | 广州赛宝计量检测中心服务有限公司 | Ethernet frame header trigger |
| CN114978960B (en) * | 2022-08-01 | 2022-11-08 | 广州赛宝计量检测中心服务有限公司 | Ethernet frame header trigger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100341303C (en) | 2007-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5559796A (en) | Delay control for frame-based transmission of data | |
| US4375097A (en) | Transparent intelligent network for data and voice | |
| KR100283462B1 (en) | Frame-based data transfer | |
| KR100298926B1 (en) | Network for data communication with isochronous capability | |
| EP0596652B1 (en) | Network for transmitting isochronous-source data with a frame structure | |
| AU604650B2 (en) | Multiplexed digital packet telephone system | |
| JP3636456B2 (en) | Isochronous link protocol | |
| EP1086556B1 (en) | Integrated voice and data communications over a local area network | |
| US4334306A (en) | Transparent intelligent network for data and voice | |
| US4939723A (en) | Bit-channel multiplexer/demultiplexer | |
| EP0596452A1 (en) | Local loopback of isochronous data in a switching mechanism | |
| JP2964457B2 (en) | Communication processing device | |
| KR19990028780A (en) | Telecommunication Devices And Methods | |
| US4317197A (en) | Transparent intelligent network for data and voice | |
| EP0100593A2 (en) | Improved time slot arrangements for local area network systems | |
| JPH10506242A (en) | Method and switch node for switching STM cells in a circuit emulated ATM switch | |
| WO2002089392A1 (en) | Bit-level control for dynamic bandwidth allocation | |
| JP4775209B2 (en) | Code division multiplexing optical access network system | |
| US4317196A (en) | Transparent intelligent network for data and voice | |
| US7990918B2 (en) | Wireless T/E transceiver frame and signaling controller | |
| JPH08237305A (en) | Method of transmitting voice signal in packet exchange network | |
| CN100341303C (en) | Method for realizing transmission of time division multichannel pulse modified signals in ether network | |
| CN1538679A (en) | Method of transmitting time division multic channel pulse coding modulation signal in Ethernet | |
| CN1104789C (en) | Method and device for integrating ATM services with STM services | |
| CN100393014C (en) | Apparatus and method for implementing optical monitoring channel of dense wavelength division multiplex system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHENG CITY ZTE CO., LTD. Free format text: FORMER OWNER: SHENZHENG CITY ZTE CO., LTD. SHANGHAI SECOND INSTITUTE Effective date: 20030725 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20030725 Applicant after: Zhongxing Communication Co., Ltd., Shenzhen City Applicant before: Shanghai Inst. of No.2, Zhongxing Communication Co., Ltd., Shenzhen City |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Yan Huaxiang Document name: Notification before expiration of term |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071003 |