Patents Assigned to Hitachi Telecom Technologies, Ltd.
  • Patent number: 5953313
    Abstract: A multiplex communication equipment which can switch circuits and which enables cost saving in circuit usage of a public network when the circuit is switched. Multiplex communication equipment 1 with circuit switching control, which is selectively connected to either an active circuit 5, having a large transmission line, or a spare circuit 6, having limited transmission line. A data terminal interface (I/F) 18 is connected to data terminal equipment 2, and a voice terminal I/F 17 is connected to voice terminal equipment 3. An active circuit I/F 13 is connected to circuit 5, and a spare circuit I/F 14 is connected to circuit 6. A multiplexing control section 16 multiplexes data and voice information, and a circuit switching section 15 switches circuits.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: September 14, 1999
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Ikuo Aso, Kazumasa Azuma, Kaoru Suzuki, Sakae Watanabe
  • Patent number: 5946382
    Abstract: This button telephone equipment comprising a plurality of button telephone apparatus 2a-2m having a plurality of the public line button 23 and a display for displaying the sender's information, and an auto-exchange apparatus 1, this auto-exchange apparatus 1 detecting the operation of the public line button during displaying the incoming call or during displaying the holding on the ON-HOOK status, and extracting the communication line data with reference to the incoming call on the basis of the data corresponding to the public line button of the operated button telephone apparatus, and extracting the sender's telephone number on the basis of the extracted communication line data, and extracting the sender's name on the basis of the extracted sender's telephone number, and then displaying the sender's telephone number and the sender's name on the display 22 the operated button telephone apparatus.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: August 31, 1999
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventor: Yoshinobu Sugahara
  • Patent number: 5905551
    Abstract: An upper case and a lower case are fixed without using screws so that assemblage workability is improved. An electric appliance can be divided into plastic upper case, metal-plate-made lower case, and logic package having print substrates. As a result, the electric appliance is easy to make.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: May 18, 1999
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Patent number: 5838402
    Abstract: An upper case 1 and a lower case 2 are fixed by no screw, so that assemblage workability is improved. An electric appliance can be divided into plastic upper case 1, metal-plate-made lower case 2, and logic package 9 having print substrates. As a result, the electric appliance is easy to waste.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: November 17, 1998
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Patent number: 5754642
    Abstract: A telephone terminal has a plurality of handsets and at least one button to input a demand for starting an outgoing call or receiving an incoming call. The terminal includes a demand recognition unit for recognizing the input demand through the one button. The terminal also includes a search unit for searching for handsets in the idle status when the input demand has been recognized. The terminal further includes a select unit for selecting one of the searched handsets that are in the idle status as a selected handset. The terminal also includes a call connection unit for controlling a call connection of the operation corresponding to the input demand, when a handset in the idle status has been selected. The terminal still further includes a nullification unit for nullifying the input demand when no handset in the idle status has been selected.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: May 19, 1998
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Yoshihisa Domoto, Yasuo Wada
  • Patent number: 5719855
    Abstract: A plurality of digital telephones 2A, 2B are provided in direct multiple connection with a digital line 4 introduced from a private branch exchanging system. Each of the digital telephones 2A, 2B sends a burst signal containing its own telephone call data, and burst signals from the telephones 2A, 2B are combined into a single burst signal on the digital line 4 to transmit communication data of the telephones 2A, 2B in the form of the single burst signal to the private branch exchanger 1.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: February 17, 1998
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Tatsuhiko Ando, Yuji Kobayashi, Masumi Kumakura
  • Patent number: 5666409
    Abstract: A dealing board has a dealing board main body having a box-like structure. The box-like structure includes a top plate, bottom plate, front face plate and rear face plate. The top plate is forwardly slanted relative to the top of a desk on which the main body is mounted and has a number of openings formed therein. The dealing board further has a plurality of panel units arranged in the opening. A receiving device secured to a bent portion of the top end of the front face plate or the rear face plate forms a gap. The dealing board further has a screen plate attached to a top end of the one of the rear face plate or the front face plate which is not bent, and a fixing device is provided on the screen plate so as to be removable by set screws. The dealing board further has a card insertion slot of a reader-writer for reading and writing information on memory cards, a card take-out button placed near the card insertion slot, and a cover covering the card slot and card take-out button.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: September 9, 1997
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Junichi Tanji, Fumiyoshi Oono, Takuya Ishida, Toshimi Akimoto, Tomonobu Watanabe, Katutoshi Yoshida, Ichiro Hoshi, Tatsuo Yamauchi, Junichiro Imai
  • Patent number: 5661793
    Abstract: A key unit is provided with a first print substrate on which a contact portion and a LED capable to be mounted on flat surface are mounted, a conductive contact rubber, placed on the first print substrate, having a movable contact portion which can contact with the contact portion and an open portion in which the LED is accommodated, a key button placed on the conductive contact rubber, a LED lens, placed on the edge portion of the open portion of the conductive contact rubber, which leads the light beam generated from the LED in the open portion, and a key case having a through hole into which the key button is slidably inserted and a lens insertion hole into which the LED lens is inserted. The key unit may also be provided with a chip resistor to protect the LED, which is mounted on the first print substrate at a position below a lower end face of the key case.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: August 26, 1997
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Junichi Tanji, Fumiyoshi Oono, Takuya Ishida, Toshimi Akimoto, Tomonobu Watanabe, Katutoshi Yoshida, Ichiro Hoshi, Tatsuo Yamauchi, Junichiro Imai
  • Patent number: 5651061
    Abstract: A telephone exchange system useful for a dealing speech system or the like is disclosed, which can accommodate large numbers of lines (or trunks) and permit improvement of the reliability and call connection processing capacity. The system comprises exchange sub-systems A (EX-A) and B (EX-B) capable of independently executing an exchange operation and each accommodating a terminal. The terminal has a speech channel switch for connecting a speech channel including a handset to either exchange sub-system A (EX-A) or B (EX-B). When the process of connecting a call is brought about in the terminal, it selects one of the exchange sub-systems and controls the speech channel switch for connecting the call to the selected exchange sub-system.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: July 22, 1997
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Yoshihisa Domoto, Yasuo Wada
  • Patent number: 5602722
    Abstract: An electric appliance includes a case, an accommodation portion for accommodating a liquid crystal indicator, and upper and lower protrusions respectively arranged above and below an opening provided on stepped portion not arranged on the front face portion of the accommodation portion. The liquid crystal indicator engages with the upper protrusion and mounts on the lower protrusion such that the liquid crystal indicator is positioned adjacent to the stepped portion and is visible through the opening.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Patent number: 5594625
    Abstract: An upper case 1 and a lower case 2 are fixed by no screw, so that assemblage workability is improved. An electric appliance can be divided into plastic upper case 1, metal-plate-made lower case 2, and logic package 9 having print substrates. As a result, the electric appliance is easy to waste.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 14, 1997
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Patent number: 5581446
    Abstract: A housing structure of an electric appliance has an upper case and a lower case. The upper case is provided with a plurality of logic holding portions arranged on inner sides of left and right side face portions of the upper case. An interior one of the logic holding portions has a protrusion engagement portion which is defined by a slant face and a front face of the interior holding portion. The lower case is provided with a lower case side engagement portion which engages releasibly with the protrusion engagement portion. The lower case side engagement portion has a resilient half portion in a half support which is formed on a bottom face of the lower case and on which an extrusion portion that engages releasibly with the protrusion engagement portion and a threaded hole for a screw are formed.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: December 3, 1996
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Patent number: 5471525
    Abstract: In a telephone exchange system accommodating a large number of communication lines, a line status display system is provided, which permits display of the status of a large number of lines in a limited display space of the terminal for scale reduction, is capable of flexible use with satisfactory operation control property and will not reduce the processing capacity of the exchange equipment. In a telephone exchange system comprising an exchange equipment (1) and a plurality of terminals (2, 2') accommodated therein, the exchange equipment (1) accommodating a plurality of lines, when detecting a line status change, sends out corresponding information to all the terminals (2, 2'), and the terminals check whether the line is a subject of processing, and if so, displays pertinent information in a predetermined display position.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: November 28, 1995
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Yoshihisa Domoto, Toshie Takahashi, Toshimi Kurumada
  • Patent number: 5465292
    Abstract: A trading telephone unit of a trading telephone system includes three display devices and control keys on the trading telephone unit. A first display device is provided at an upper left side of the unit having a function keyboard and a ten-key keyboard provided thereunder. On the right side of the unit, two display devices are provided in parallel with one of the two display devices being a second display device having, for example, twenty line selecting keys and a third display device having fifteen line selecting keys and four incoming line selecting keys, thereby enabling the unit to indicate thirty-five lines at once. The trading telephone includes pagenation memory having, for example, ten pages of memory with each page carrying thirty-five line names and dialing numbers.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: November 7, 1995
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Toshie Takahashi, Takashi Sato, Toshimi Kurumada, Yoshiyuki Kokubun
  • Patent number: 5461377
    Abstract: A panel unit for a dealing board has a display and a keyboard unit provided with buttons. The display is divided into individual indications which display function names corresponding to the buttons. The keyboard unit has a printed substrate arranged on the display, fixed contacts which form switches provided for the buttons, and electric conductive contact rubber located on the printed substrate and provided with moving contacts opposing the fixed contacts. A panel is positioned on the electric conductive rubber and provided with the buttons. The panel has holes, the buttons are fitted into the holes to be vertically movable so that the fixed contacts of the printed substrate come into contact with the movable contacts of the electric conductive rubber.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: October 24, 1995
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Fumiyoshi Oono, Tomonobu Watanabe, Yoshitada Yaginuma
  • Patent number: 5461376
    Abstract: A panel unit for a dealing board has a keyboard unit provided with buttons, the keyboard unit has a printed substrate arranged on a display, fixed contacts which form switches provided for the buttons, and electric conductive contact rubber located on the printed substrate and provided with moving contacts opposing the fixed contacts. A panel is positioned on the electric conductive contact rubber and provided with the buttons. The panel has holes, the buttons are fitted into the holes to be vertically moveable so that the fixed contacts of the printed substrate come into contact with the movable contacts of the electric conductive contact rubber. The buttons are provided with an engagement portion for preventing the buttons from coming off the panel and the electric conductive contact rubber and the printed substrate have relief holes in which the buttons are fitted when the engagement portion holds the buttons.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: October 24, 1995
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Fumiyoshi Oono, Tomonobu Watanabe, Yoshitada Yaginuma
  • Patent number: 5461543
    Abstract: An upper case 1 and a lower case 2 are fixed by no screw, so that assemblage workability is improved. An electric appliance can be divided into plastic upper case 1, metal-plate-made lower case 2, and logic package 9 having print substrates.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: October 24, 1995
    Assignee: Hitachi Telecom Technologies Ltd.
    Inventors: Kazuo Sanpei, Tatsuo Yamauchi
  • Patent number: 5418850
    Abstract: A dealing board has a dealing board main body having a box-like structure. The box-like structure includes a top plate, bottom plate, front face plate and rear face plate. The top plate is forwardly slanted relative to the top of a desk on which the main body is mounted and has a number of openings formed therein. The dealing board further has a plurality of panel units arranged in the opening. A receiving device secured to a bent portion of the top end of the front face plate or the rear face plate forms a gap. The dealing board further has a screen plate attached to a top end of the one of the rear face plate or the front face plate which is not bent, and a fixing device is provided on the screen plate so as to be removable by set screws. The dealing board further has a card insertion slot of a reader-writer for reading and writing information on memory cards, a card take-out button placed near the card insertion slot, and a cover covering the card slot and card take-out button.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: May 23, 1995
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Junichi Tanji, Fumiyoshi Oono, Takuya Ishida, Toshimi Akimoto, Tomonobu Watanabe, Katutoshi Yoshida, Ichiro Hoshi, Tatsuo Yamauchi, Junichiro Imai
  • Patent number: 5404398
    Abstract: A telephone exchange system useful for a bank or brokerage house speech system or the like, which can accommodate a large number of lines (or trunks) and permit improvement of the reliability and call connection processing capacity. The system comprises exchange sub-systems A (EX-A) and B (EX-B) capable of independently executing an exchange operation and each accommodating a terminal. The terminal, on the other hand, has a speech channel switch for connecting a speech channel including a handset to either exchange sub-system A (EX-A) or B (EX-B). When a process of connecting a call is brought about in the terminal, that terminal selects one of the exchange subsystems and controls the speech channel switch for connecting the call to the selected exchange sub-system.
    Type: Grant
    Filed: September 1, 1993
    Date of Patent: April 4, 1995
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Yoshihisa Domoto, Yasuo Wada