专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

DE4192652T1 未知
公开(公告)号：DE4192652T1
公开(公告)日：1993-11-18
申请号：DE4192652
申请日：1991-10-30
申请人： ROSE COMMUNICATIONS INC
发明人： WILDER RONALD P , PIERCE GREGORY , FREY RICHARD C , CHILDS-GOODRICH WHITNEY EARL , NEEDLE DAVID LEWIS
IPC分类号： H04M3/56 , H04W84/16 , H04Q11/04 , H04J3/00 , H04J3/06 , H04J3/24 , H04R3/00

2. 发明专利

GB9308919D0 DIGITAL RADIO TELEPHONE SYSTEM 未知
公开(公告)号：GB9308919D0
公开(公告)日：1993-07-14
申请号：GB9308919
申请日：1993-04-29
申请人： ROSE COMMUNICATIONS INC
IPC分类号： H04M3/56 , H04W84/16

3. 发明专利

DE4135061A1 未知
公开(公告)号：DE4135061A1
公开(公告)日：1992-05-07
申请号：DE4135061
申请日：1991-10-24
申请人： ROSE COMMUNICATIONS INC
发明人： NEEDLE DAVID LEWIS , STRIBLING BRADLEY C
IPC分类号： H04L9/06 , H04K1/00 , H04L9/14 , H04L9/18 , H04M1/00
摘要： In the secure radio transmission system of the present invention the sign bit for each byte of audio digital data is scrambled to generate a scrambled sign bit. By altering the sign bit, the resultant sound is significantly affected regardless of the amplitude range of the source audio. A key is stored in each authorized radio transmitter/receiver telephone. The key is used to select the bits of the digital voice data to be transmitted which are used to scramble the sign bit. The selected bits of the voice data are then used to scramble the sign bit and the voice data with the scrambled sign bit are transmitted to the receiving device. The receiving device executes the reverse process wherein the receiving device selects predetermined bits of the received voice data according to the key stored in the receiving device and scrambles the scrambled sign bit using the same algorithm in accordance with the data bits selected. This process generates the unscrambled sign bit and unscrambled voice data is generated at the output of the receiving device.

4. 发明专利

GB2265794A Digital radio telephone system 未知
公开(公告)号：GB2265794A
公开(公告)日：1993-10-06
申请号：GB9308919
申请日：1993-04-29
申请人： ROSE COMMUNICATIONS INC
发明人： WILDER RONALD P , PIERCE GREGORY , FREY RICHARD C , CHILDS-GOODRICH WHITNEY EARL , NEEDLE DAVID LEWIS
IPC分类号： H04M3/56 , H04W84/16
摘要： The telephone system is realized by a unique dynamic time slice architecture which allows for up to 480 transfers of data. A dual port RAM (310) is utilized in which are stored two pages of data, containing time slice information identifying the sending and receiving devices for each time slice slot within the frame. The time slice configuration can be easily modified to accommodate a change in the current system configuration, for example, a handset connecting or disconnecting from a central office line (365), or the initiation of a conference call. The time slice configuration is modified by updating the second page and swapping the two pages at the beginning of the next frame so that the time slice controller (310) accesses the second page and the configurations specified therein. Thus, the system can be updated and controlled in real time with no delays to the users of the telephone system. The conferencing circuit (33) linearly combines digitized audio data received from different sources over successive time slice slots in a single frame on a real time basis.

5. 发明专利

GB2250163A SECURE VOICE DATA TRANSMISSION SYSTEM 未知
公开(公告)号：GB2250163A
公开(公告)日：1992-05-27
申请号：GB9120587
申请日：1991-09-27
申请人： ROSE COMMUNICATIONS INC
发明人： NEEDLE DAVID LEWIS , STRIBLING BRADLEY C
IPC分类号： H04L9/06 , H04K1/00 , H04L9/14 , H04L9/18 , H04M1/00
摘要： In the secure radio transmission system of the present invention the sign bit for each byte of audio digital data is scrambled to generate a scrambled sign bit. By altering the sign bit, the resultant sound is significantly affected regardless of the amplitude range of the source audio. A key is stored in each authorized radio transmitter/receiver telephone. The key is used to select the bits of the digital voice data to be transmitted which are used to scramble the sign bit. The selected bits of the voice data are then used to scramble the sign bit and the voice data with the scrambled sign bit are transmitted to the receiving device. The receiving device executes the reverse process wherein the receiving device selects predetermined bits of the received voice data according to the key stored in the receiving device and scrambles the scrambled sign bit using the same algorithm in accordance with the data bits selected. This process generates the unscrambled sign bit and unscrambled voice data is generated at the output of the receiving device.

6. 发明专利

GB9120587D0 SECURE VOICE DATA TRANSMISSION SYSTEM 未知
公开(公告)号：GB9120587D0
公开(公告)日：1991-11-06
申请号：GB9120587
申请日：1991-09-27
申请人： ROSE COMMUNICATIONS INC
IPC分类号： H04L9/06 , H04K1/00 , H04L9/14 , H04L9/18 , H04M1/00
摘要： In the secure radio transmission system of the present invention the sign bit for each byte of audio digital data is scrambled to generate a scrambled sign bit. By altering the sign bit, the resultant sound is significantly affected regardless of the amplitude range of the source audio. A key is stored in each authorized radio transmitter/receiver telephone. The key is used to select the bits of the digital voice data to be transmitted which are used to scramble the sign bit. The selected bits of the voice data are then used to scramble the sign bit and the voice data with the scrambled sign bit are transmitted to the receiving device. The receiving device executes the reverse process wherein the receiving device selects predetermined bits of the received voice data according to the key stored in the receiving device and scrambles the scrambled sign bit using the same algorithm in accordance with the data bits selected. This process generates the unscrambled sign bit and unscrambled voice data is generated at the output of the receiving device.

7. 发明申请

WO1993006660A1 METHOD AND APPARATUS FOR PERTURBATION CANCELLATION OF A PHASE LOCKED OSCILLATOR 审中-公开
标题翻译：用于相位锁定振荡器的扰动消除的方法和装置
公开(公告)号：WO1993006660A1
公开(公告)日：1993-04-01
申请号：PCT/US1992008155
申请日：1992-09-24
申请人： ROSE COMMUNICATIONS, INC.
发明人： ROSE COMMUNICATIONS, INC. , STRIBLING, Bradley , ELINE, Roger, J., O.
IPC分类号： H03L07/16
CPC分类号： H03L7/183 , H04B1/1027
摘要： A phase locked loop is augmented by an additional mechanism which permits the closed loop cancellation of the frequency perturbing effects on the oscillator by repetitive signals well beyond the bandwidth of the phase locked loop. Successful implementation requires that the perturbations be repetitive and that the perturbing signal be available as a reference, conditions which are commonly the case. This compound loop can effectively cancel perturbations whose dynamics change only slowly compared to the speed of the added synchronous loop. The Anti-Pulling Loop mechanism consists of an amplifier (22) to increase the level of the evidence of the perturbations present at the phase detector's (45) output, a synchronous amplitude detector (25) to correlate the perturbations with a reference signal, a circuit (70) for the generation of a suitable quadrature reference signal, a loop integrator (55) for the control of a signal injection mechanism, and a signal injection circuit (60) to supply an appropriate signal to oppose and cancel the effects of the perturbing signal.

8. 发明申请

WO1992008328A1 DIGITAL RADIO TELEPHONE SYSTEM 审中-公开
标题翻译：数字无线电电话系统
公开(公告)号：WO1992008328A1
公开(公告)日：1992-05-14
申请号：PCT/US1991008025
申请日：1991-10-30
申请人： ROSE COMMUNICATIONS, INC.
发明人： ROSE COMMUNICATIONS, INC. , WILDER, Ronald, P. , PIERCE, Gregory , FREY, Richard, C. , CHILDS-GOODRICH, Whitney, Earl , NEEDLE, David, Lewis
IPC分类号： H04Q11/04
CPC分类号： H04W84/16
摘要： The telephone system is realized by a unique dynamic time slice architecture which allows for up to 480 transfers of data. A dual port RAM (310) is utilized in which are stored two pages of data, containing time slice information identifying the sending and receiving devices for each time slice slot within the frame. The time slice configuration can be easily modified to accommodate a change in the current system configuration, for example, a handset connecting or disconnecting from a central office line (365), or the initiation of a conference call. The time slice configuration is modified by updating the second page and swapping the two pages at the beginning of the next frame so that the time slice controller (310) accesses the second page and the configurations specified therein. Thus, the system can be updated and controlled in real time with no delays to the users of the telephone system. The conferencing circuit (33) linearly combines digitized audio data received from different sources over successive time slice slots in a single frame on a real time basis.

9. 发明申请

WO1991012636A1 HYBRID DIRECTIONAL COUPLER CIRCUIT 审中-公开
标题翻译：混合方向耦合器电路
公开(公告)号：WO1991012636A1
公开(公告)日：1991-08-22
申请号：PCT/US1991000863
申请日：1991-02-05
申请人： ROSE COMMUNICATIONS, INC.
发明人： ROSE COMMUNICATIONS, INC. , FRY, Terry, F.
IPC分类号： H01P05/18
CPC分类号： H01P5/16
摘要： A hybrid network including a four port directional coupler with the terminating impedance (170) of one port (130) being intentionally mismatched with the characteristic impedance of the coupler. Such an intentionally mismatched port will cause the transfer signal of an input signal from an adjacent port (120) to be reflected to another adjacent port (140) and to be combined with the transfer signal of a second input signal, which is from an input port (110) not isolated from the first input port (120). Placing the two input ports (110, 120) adjacent to one another also allows one input to radiate out of another adjacent input port. Alternatively, a hybrid network is provided including a four port directional coupler with all ports (210, 220, 230, 240) properly terminated at the characteristic impedance of the coupler. An external combiner (260) for signals from one port (240) and its adjacent port (230) allows the combining of two input transfer signals generated from the other two non-isolated input ports (210, 220).

10. 发明申请

WO1991012672A1 METHOD AND APPARATUS FOR SELECTIVE SIDEBAND IN A PROXIMAL CABLE-LESS COMMUNICATION SYSTEM SIGNAL 审中-公开
标题翻译：一种临时电缆无线通信系统信号中选择性边带的方法与装置
公开(公告)号：WO1991012672A1
公开(公告)日：1991-08-22
申请号：PCT/US1991000803
申请日：1991-02-05
申请人： ROSE COMMUNICATIONS, INC.
发明人： ROSE COMMUNICATIONS, INC. , SCHILLER, Thomas, H. , FRY, Terry, L. , SMITH, Richard, J.
IPC分类号： H04B01/06
CPC分类号： H04B1/408
摘要： An improved proximal cable-less communications system using at least two receivers is described. The system is significantly improved by eliminating the sidetone which can occur in full duplex systems. Components are placed in the receivers, between the mixer components (710, 770) and the components which detect the information encoded in the signal at the intermediate frequency (800), which function to cancel out the detrimental affect of those signals containing information derived from the modulation of the local oscillator (610) of the receiver device.
摘要翻译：描述了使用至少两个接收器的改进的近端无电缆通信系统。通过消除可能发生在全双工系统中的侧耳，该系统得到显着改善。组件被放置在接收器中，混合器组件（710,770）和检测在中间频率（800）处的信号中编码的信息的组件，其功能是消除包含从...中得到的信息的那些信号的有害影响接收机设备的本地振荡器（610）的调制。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式