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1. 发明专利

JP2000201176A NETWORK CONNECTING DEVICE 失效
公开(公告)号：JP2000201176A
公开(公告)日：2000-07-18
申请号：JP69999
申请日：1999-01-05
申请人： HITACHI LTD , HITACHI INFORMATION NETWORK
发明人： SHIMANO TOMIO , FUJITA MASAHIKO , SAKO YOSHITO
IPC分类号： H04L12/823 , H04L12/873 , H04L12/883 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To minimize the discard rate of transmission data corresponding to the dynamic variation of mean transmission data quantity and to eliminate the influences of the steady traffics of buses other than its own one by changing dynamically the maximum queue length in a communication mode in response to the mean transmission data quantity and the accumulated transmission data quantity of every logical communication path or the queue staying time of the transmission data. SOLUTION: The mean transmission data quantity SP1 of its selected own path is compared with the mean transmission data quantity SP2 of another path (420, 421). If the quantity SP1 is larger than the quantity SP2, the queue length increment value is added to the maximum queue length variation value to change the latter value in a range under the maximum queue length (422). If the quantity SP1 is smaller than the quantity SP2, the maximum queue length variation value is changed in a range over the minimum queue length (423). Then the queue length is compared with the maximum queue length variation value (424, 425). If the former length is not more the latter value, the transmission data are accumulated in a transmission queue and adds 1 to these transmission data within the maximum variation value (426).

2. 发明专利

JPH0573981B2 失效
公开(公告)号：JPH0573981B2
公开(公告)日：1993-10-15
申请号：JP3853184
申请日：1984-03-02
申请人： HITACHI LTD
发明人： FUKUSHIMA TOSHIHIKO , MYAMOTO SEIGO , FUJITA MASAHIKO , TAKESO MASANORI , SAYO KOSAKU
IPC分类号： F25B1/00 , F25B41/06

3. 发明专利

JPH03258153A CALLER IDENTIFICATION SYSTEM BY CALL SIGNAL 失效
公开(公告)号：JPH03258153A
公开(公告)日：1991-11-18
申请号：JP5513890
申请日：1990-03-08
申请人： HITACHI LTD
发明人： HAMAGUCHI NAOHISA , FUJITA MASAHIKO
IPC分类号： H04M3/42
摘要： PURPOSE:To allow a called party to easily recognize a caller or a caller group by calling a specific subscriber with a call signal of an intermittent period corresponding to the result of identification of a password sent from the caller in response to a request of an exchange. CONSTITUTION:When a call requesting the arrival of a call to a called part 2 being a specific subscriber accommodated in a telephone exchange 1 comes from a caller 6, the exchange 1 requests the transmission of a password to the caller 6. The content of the sent password is identified by a recognition device 5 of the exchange 1, the caller is specified and the called party 2 is called by a call tone of an intermittent period in response to the result of recognition via a talkie device 5b. Through the constitution above, the called party easily and surely recognizes the specific caller and the specific group caller by using the call tone.

4. 发明专利

JPH03164200A ANALYSIS OF GENE BY LIQUID HYBRIDIZATION 失效
公开(公告)号：JPH03164200A
公开(公告)日：1991-07-16
申请号：JP30316689
申请日：1989-11-24
申请人： HITACHI LTD
发明人： FUJITA MASAHIKO , KANBARA HIDEKI , MURAKAWA KATSUJI , NAGAI KEIICHI , SHIMADA TAMOTSU
IPC分类号： C12Q1/68
摘要： PURPOSE:To detect the presence of a specific base sequence and the mutation of base pair and to analyze a gene by adding a specific nucleoside triphosphate, a DNA fragment and a DNA polymerase to a specimen containing nucleic acid to synthesize a complemental strand DNA and analyzing the DNA by gel electrophoresis. CONSTITUTION:Four kinds of nucleoside triphosphates, a DNA fragment having a specific sequence and a DNA polymerase are added to a DNA specimen containing nucleic acid of an organism or virus and subjected to hybridization. The synthesized complemental strand DNA is analyzed by gel-electrophoresis to analyze the gene by the base length pattern of the DNA. In the above process, the hydridization is carried out by using a non-labeled oligonucleotide terminator in combination with a labeled oligonucleotide primer and a DNA sequence between both components is synthesized to enable the analysis of gene using liquid hydridization technique.

5. 发明专利

JPH03118462A ELECTROPHORESIS APPARATUS 失效
公开(公告)号：JPH03118462A
公开(公告)日：1991-05-21
申请号：JP25543789
申请日：1989-09-30
申请人： HITACHI LTD
发明人： MURAKAWA KATSUJI , FUJITA MASAHIKO , NAGAI KEIICHI , SHIMADA TAMOTSU , KANBARA HIDEKI
IPC分类号： G01N27/447 , G01N27/26
摘要： PURPOSE:To obtain excellent reproducibility by simple, quick operations by providing at least two molecular-weight partitioning films in the order from the film for larger molecular weight or in the reverse order, and partitioning electrophoresis paths. CONSTITUTION:A migrating tank 4 is divided into a first chamber 4a, a second chamber 4b and a third chamber 4c with molecular-weight partitioning films 5 and 6. The surfaces of the films 5 and 6 face the chambers 4a, 4b and 4c, respectively. The dividing molecular weight of the film 5 is larger than the molecular weight of intended molecules 8. That of the film 6 is smaller. When an electric field is applied through electrodes 2 and 3, the molecules in the chamber 4a are migrated in the direction 3 from the electrode 2 to the electrode 3. Only the molecules smaller than the partitioned molecular weight of the film 5 pass the film 5 and move into the chamber 4b. Only the molecules which are smaller than that of the film 6 move into the chamber 4c. As a result, the intended molecules 8 are isolated in the chamber 4b. The molecules 9 which are larger than the partitioned molecular weight is separated in the chamber 4a. The molecules 10 smaller than the molecular weight are separated in the chamber 4c. Thus, the intended molecules can be separated and separately collected simply and quickly.

6. 发明专利

JPH03105251A PREPARING APPARATUS OF SAMPLE 失效
公开(公告)号：JPH03105251A
公开(公告)日：1991-05-02
申请号：JP24200889
申请日：1989-09-20
申请人： HITACHI LTD
发明人： FUJITA MASAHIKO , KANBARA HIDEKI , MURAKAWA KATSUJI , NAGAI KEIICHI , SHIMADA TAMOTSU
IPC分类号： G01N33/48 , G01N33/50
摘要： PURPOSE:To reduce a burden of an operator in relation to an operation for preparation of a sample by providing at least a vessel provided with a molecular-weight separating film, a centrifuge bearing the vessel and applying a centrifugal acceleration to a liquid and a vessel conveyor conveying the vessel. CONSTITUTION:A vessel 18 with a molecular-weight separating film is constructed of the molecular-weight separating film 18a, a base 18b of this separating film 18a, an O ring 18c and vessel walls 18d and 18e, and a condensed liquid 18f is collected onto the side of 18d and a filtered liquid 18g onto the side of 18e by applying a centrifugal acceleration in a centrifuge 11. Between the base 18b and the vessel wall 18e a gap 18i is provided so that air can enter and leave freely and that a filtering operation can be conducted smoothly. By this molecular-weight separating film, a substance of a smaller molecular weight than a prescribed value in a solution is filtered and a substance of a larger molecular weight than a prescribed weight is left on the upper side of the film. In order to increase the speed of filtration, in addition, the centrifugal acceleration is applied to the vessel by the centrifuge 11. On the occasion, the vessel 18 is set on the centrifuge 11 and a processing is executed by using a vessel conveyor 14.

7. 发明专利

JPH03101856A CENTRIFUGAL SEPARATOR 失效
公开(公告)号：JPH03101856A
公开(公告)日：1991-04-26
申请号：JP23997489
申请日：1989-09-18
申请人： HITACHI LTD
发明人： MURAKAWA KATSUJI , FUJITA MASAHIKO
IPC分类号： B04B5/02 , B04B11/00
摘要： PURPOSE:To change the direction of tube holes of angle rotor in an angle rotor type centrifugal separator by providing the mechanism slanting the rotary shaft of the angle rotor, and slanting the rotary shaft. CONSTITUTION:The motor 10 for the mechanism 11 slanting the rotary shaft is driven to slant a base 8, and a specified tube hole 1-a of the angle rotor 1 is turned to the vertical direction by driving a positioning mechanism 6. Then, by driving a sample tube transfer mechanism 15, a sample tube 16 is positioned and mounted so that the balance is kept according to the number of sample tubes 16 mounted in the tube holes 1-a, and these operations are repeated. Then, the rotary shaft slanting mechanism 11 is driven to turn the rotary shaft 2 to the vertical direction to carry out the high speed driving. After the high speed driving is finished, the specified tube holes 1-a are turned to the vertical direction by driving the rotary shaft slanting mechanism 11, and the sample tubes are taken out by driving the sample tube transfer mechanism 15. Thus, the sample tubes 16 are allowed to take out of and set into the tube holes of the angle rotor 1 in the vertical direction.

8. 发明专利

JPH0315400A REAGENT KIT FOR DETERMINING BASE SEQUENCE 失效
公开(公告)号：JPH0315400A
公开(公告)日：1991-01-23
申请号：JP14960489
申请日：1989-06-14
申请人： HITACHI LTD
发明人： FUJITA MASAHIKO , KANBARA HIDEKI , MURAKAWA KATSUJI
IPC分类号： C12Q1/48 , C12Q1/68
摘要： PURPOSE:To enable prevention of DNA adsorption and practice of reaction with excellent reliability even for a trace amount of a template DNA by adding a nonionic surfactant polyoxyethylene sorbitan monolaurate to a reagent kit. CONSTITUTION:A reagent kit composed of a primer, a concentrated buffer solution for reaction, a DNA polymerase, etc., is used to determine base sequence of a DNA. In the process, a prescribed amount of a nonionic surfactant polyoxyethylene sorbitan monolaurate is injected and mixed therewith to prepare the kit. Furthermore, equivalent preventive effects on adsorption of DNA on vessel walls are also produced even by mixing the surfactant with the buffer solution concentrated to 5 fold or primer. The concentration is increased to the critical micelle concentration or above so that the surfactant may further effectively act as an adsorption inhibitor. Thereby, the DNA can be prevented from adsorbing on the vessel walls and the reaction can be carried out with excellent reliability even for a trace amount of a template DNA.

9. 发明专利

JPH01170153A SYSTEM FOR CONNECTING FIXED PATH 失效
公开(公告)号：JPH01170153A
公开(公告)日：1989-07-05
申请号：JP32696187
申请日：1987-12-25
申请人： HITACHI LTD
发明人： FUJITA MASAHIKO
IPC分类号： H04M3/22 , H04Q11/04
摘要： PURPOSE:To more freely execute a switching action even at the time of a digital direct coupling by connecting a line and necessary equipment through the switching network of an exchange, and maintaining a connection path even when a switching function is stopped. CONSTITUTION:An incoming highway and an incoming side call memory 1 corresponding to number 0 write a call number A of a time slot number 0 on a highway to the 0 address of their own by a sequential writing. Contents to be read get through the highway to a highway switch 3. Since 1 is written to the 0 address at an outgoing HW switching memory 5, the switch of an outgoing highway number 1 is closed at a time 0, and the call number A to pass gets to the outgoing highway number 1. A signal A to appear on the highway 1 at the time 0 is written to the 0 address of a memory 6. Then, the contents of the memory 5 is rewritten by a software. Thus, the switching action can be more freely executed.

10. 发明专利

JPS6378651A TRANSFER CALL DISCRIMINATING SYSTEM 失效
公开(公告)号：JPS6378651A
公开(公告)日：1988-04-08
申请号：JP22180986
申请日：1986-09-22
申请人： HITACHI LTD
发明人： FUJITA MASAHIKO
IPC分类号： H04M3/54
摘要： PURPOSE:To attain the transfer of a call between stations, by providing transfer call display as the class code of the forward direction signal group II of an MFC signal, and a signal to request the sending of the display to a group A that is a backward direction signal. CONSTITUTION:A signal I-X shows that it is a group I signal, and is the numeral signal of forward direction. A signal II-X shows that it is a group II signal, and an X shows that it is the outgoing person class of respective call. A signal II-Y is the signal of forward direction representing a transfer call. A signal A-X shows that it is a group A signal, and is the connection control signal of backward direction. An incoming call station, when it recognizes a code as a final code, returns an A-Y, and instructs a message 'Send a transfer class, if any.'. When the call is the transfer call, an outgoing station sends a II-Y. Assuming that no re-transfer is permetted at the incoming call station, the incoming call station, after receiving the class II-Y, sends a message 'In complexity or, in busy' in an A-X falsely, and recovers connection.

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