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1. 发明专利

DE112020004284B4 System und Verfahren zur Zuweisung von Flash- und Arbeitsspeichern zwecks reduzierten Energieverbrauchs in einem Prozessor 未知
公开(公告)号：DE112020004284B4
公开(公告)日：2022-12-08
申请号：DE112020004284
申请日：2020-09-11
申请人： REDPINE SIGNALS INC
发明人： KALLAM SUBBA REDDY , MURALI PARTHA SARATHY , LULAGAM VENKATA SIVA PRASAD , BIYYANI ANUSHA , VANJAMURI VENKATESH , MOHAMMED SHAHABUDDIN , GURRAM RAHUL KUMAR , SONI AKHIL
IPC分类号： G06F1/32 , G06F12/08
摘要： Energiesparender Prozessor, aufweisend:eine zentrale Verarbeitungseinheit (CPU);einen Flash-Festspeicher (ROM), der Bootcode, festen Code und portable Codesegmente enthält;einen Arbeitsspeicher (RAM) mit einem für transienten RAM-Speicher zugewiesenen Bereich, einem für aufrufbare Funktionen zugewiesenen Bereich, einer Funktionszeigertabelle und energiesparendem Code;wobei der RAM-Bereich, der für aufrufbare Funktionen zugewiesen ist, mindestens eine Funktion hat, die aus einem portablen Flash-ROM-Codesegment kopiert wurde;wobei die Funktionszeigertabelle einen Zeiger entweder auf das portable Flash-ROM-Codesegment oder auf den RAM-Bereich enthält, der für aufrufbare Funktionen zugewiesen ist und in dem die mindestens eine Funktion aus dem portablen Flash-ROM-Codesegment kopiert wurde;wobei der energiesparende Code die CPU anweist, regelmäßig ein Verhältnis einer Größe des RAM-Bereichs, der für aufrufbare Funktionen zugewiesen wurde, zu einer gesamten RAM-Größe zu überprüfen, um ein Zuweisungsverhältnis zu bilden;wenn das Zuweisungsverhältnis über einem ersten Schwellenwert liegt:Identifizieren von mindestens einer aufrufbaren Funktion eines RAM-Bereichs, die aus einem portablen Flash-ROM-Codesegment kopiert wurde;Aktualisieren eines zugeordneten Zeigers in der Funktionszeigertabelle, um auf das identifizierte portable Flash-ROM-Codesegment zu verweisen;Freigeben eines entsprechenden von der mindestens einen von dem RAM-Bereich aufrufbaren Funktion verwendeten RAM-Bereichs und das Zuweisen des freigegebenen entsprechenden RAM-Bereichs zum transienten RAM-Speicherbereich, und;wenn das Zuweisungsverhältnis unter einem zweiten Schwellenwert liegt:Freigeben eines Segments des transienten RAM-Speichers;Zuweisen des freigegebenen Segments des transienten RAM-Speichers zu einem Bereich des aufrufbaren RAM-Funktionsspeichers;Kopieren mindestens eines portablen Codemodulsegments aus dem Flash-ROM in den aufrufbaren Funktionsbereich des RAMs;Aktualisieren eines Zeigers in der Funktionszeigertabelle, um Aufrufe an das vom Flash-ROM kopierte portable Codesegment zu dem aufrufbaren Funktionsbereich des RAMs zu richten.

2. 发明申请

WO2022165350A2 ARCHITECTURE FOR MULTIPLIER ACCUMULATOR USING UNIT ELEMENTS FOR MULTIPLICATION, BIAS, ACCUMULATION, AND ANALOG TO DIGITAL CONVERSION OVER A SHARED CHARGE TRANSFER BUS 审中-公开
公开(公告)号：WO2022165350A2
公开(公告)日：2022-08-04
申请号：PCT/US2022/014586
申请日：2022-01-31
申请人： REDPINE SIGNALS INC
发明人： KRAEMER, Martin , BOESCH, Ryan , XIONG, Wei
IPC分类号： G06F17/16 , G06F7/544 , H03M3/04
摘要： An architecture for a multiplier-accumulator (MAC) uses a common Unit Element (UE) for each aspects of operation, the MAC formed as a plurality of MAC UEs, a plurality of Bias UEs, and a plurality of Analog to Digital Conversion (ADC) UEs which collectively perform a scalable MAC operation and generate a binary result. Each MAC UE, BIAS UE and ADC UE comprises groups of NAND gates with complementary outputs arranged in AND-groups, each AND gate coupled to a charge transfer bus through a charge transfer capacitor Cu to form an analog multiplication product. Each UE transfers differential charge to the charge transfer bus. The analog charge transfer bus is coupled to groups of ADC UEs with an ADC controller which enables and disables the ADC UEs using successive approximation to determine the accumulated multiplication result.

3. 发明申请

WO2019148135A2 REGISTRATION OF AN INTERNET OF THINGS (IOT) DEVICE USING A PHYSICALLY UNCLONEABLE FUNCTION 审中-公开
公开(公告)号：WO2019148135A2
公开(公告)日：2019-08-01
申请号：PCT/US2019/015472
申请日：2019-01-28
申请人： REDPINE SIGNALS, INC
发明人： MATTELA, Venkat , MUDULODU, Sriram
IPC分类号： H04W12/06
摘要： An IoT device has a public device identifier and a private device identifier, where the public devic4 identifier is publicly available and the private device identifier is secret but kept in a secure device database as a tuple. A registration request containing encrypted credentials comprising at least a private identifier and optionally a public identifier is sent from the IoT device to an association server in communication with a device database having an association between IoT public identifier and a corresponding IoT private identifier. The association server which receives the registration request and encrypted credentials responds with a registration acknowledgement when the decrypted credentials match the tuple in the device database, or forwards the request to a registration server when it does not. The requesting IoT device receives an acknowledgement and is thereafter able to join the wireless network.

4. 发明申请

WO2019148135A3 REGISTRATION OF AN INTERNET OF THINGS (IOT) DEVICE USING A PHYSICALLY UNCLONEABLE FUNCTION 审中-公开
公开(公告)号：WO2019148135A3
公开(公告)日：2019-08-01
申请号：PCT/US2019/015472
申请日：2019-01-28
申请人： REDPINE SIGNALS, INC
发明人： MATTELA, Venkat , MUDULODU, Sriram
IPC分类号： G06F7/04
摘要： An IoT device has a public device identifier and a private device identifier, where the public devic4 identifier is publicly available and the private device identifier is secret but kept in a secure device database as a tuple. A registration request containing encrypted credentials comprising at least a private identifier and optionally a public identifier is sent from the IoT device to an association server in communication with a device database having an association between IoT public identifier and a corresponding IoT private identifier. The association server which receives the registration request and encrypted credentials responds with a registration acknowledgement when the decrypted credentials match the tuple in the device database, or forwards the request to a registration server when it does not. The requesting IoT device receives an acknowledgement and is thereafter able to join the wireless network.

5. 发明申请

WO2019118953A1 POWER-SAVE SYSTEM FOR DETECTION OF BLUETOOTH LONG RANGE PACKETS 审中-公开
公开(公告)号：WO2019118953A1
公开(公告)日：2019-06-20
申请号：PCT/US2018/065899
申请日：2018-12-16
申请人： REDPINE SIGNALS, INC
发明人： MURALI, Partha Sarathy , NALLAPARAJU, SuryaNarayana Varma
IPC分类号： H04W72/12
摘要： A preamble detector for a Bluetooth Long Range includes a receiver for forming baseband samples from Bluetooth packets and a preamble detect controller for enabling and disabling power to the receiver. Where the preamble duration is Tcyc, the preamble detector turns on for a preamble detect time T1 and turns off for a duration T2, where T2 = Tcyc - 2*T1. A series of hierarchical decisions is made on sequentially increasing intervals of time based on an accumulated correlation result of correlating the baseband samples against a SYNC sequence to power the receiver back down before the end of the T1 period when the accumulated correlation result is below a threshold and continues to a subsequent correlation interval when the accumulated correlation result is above a threshold, where the threshold is established to have at least a 20% false alarm rate for preamble detection.

6. 发明申请

WO2018170192A1 TWO-FACTOR AUTHENTICATION WITH USER-SELECTED PASSCODE MODIFICATION 审中-公开
公开(公告)号：WO2018170192A1
公开(公告)日：2018-09-20
申请号：PCT/US2018/022535
申请日：2018-03-15
申请人： REDPINE SIGNALS, INC
发明人： MATTELA, Venkat
IPC分类号： G06F7/04
CPC分类号： G06F21/42 , G06F21/30
摘要： An authentication method has a login step using a username and password, the login step followed by the sending of a random passcode to a user communication device, the user modifying the random passcode and returning the modified random passcode. The system compares the random passcode which was sent after modification according to a passcode modification selected by the user with the returned passcode from the user and authenticating the user if they match, or not authenticating the user if they do not match.

7. 发明申请

WO2021051025A1 SYSTEM AND METHOD FOR FLASH AND RAM ALLOCATION FOR REDUCED POWER CONSUMPTION IN A PROCESSOR 审中-公开
公开(公告)号：WO2021051025A1
公开(公告)日：2021-03-18
申请号：PCT/US2020/050590
申请日：2020-09-11
申请人： REDPINE SIGNALS INC
发明人： KALLAM, Subba Reddy , MURALI, Partha Sarathy , PULAGAM, Venkata Siva Prasad , BIYYANI, Anusha , VANJAMURI, Venkatesh , MOHAMMED, Shahabuddin , GURRAM, Rahul Kumar , SONI, Akhil
IPC分类号： G06F1/32 , G06F3/06 , G06F12/00
摘要： The present invention is an controller for dynamically allocating RAM between powersave code copied from ROM and transient RAM memory used for storing packets. When the utilization of the transient RAM memory is low, code segments are copied from ROM and executed from RAM using a RAM pointer table which is updated after the code segments are copied over from ROM, and when the utilization of the transient RAM memory is high, code segments are deallocated from RAM and the pointer table is updated to point to the corresponding location in flash ROM.

8. 发明申请

WO2020091771A1 MEMORY INTERFACE FOR A SECURE NOR FLASH MEMORY 审中-公开
公开(公告)号：WO2020091771A1
公开(公告)日：2020-05-07
申请号：PCT/US2018/058556
申请日：2018-10-31
申请人： REDPINE SIGNALS, INC.
发明人： MURALI, Partha Sarathy , PULAGAM, Venkata Siva Prasad , SANKABATHULA, Sailaja Dharani Naga , GUNTURU, Venkat Rao , KALLAM, Subba Reddy
IPC分类号： G06F3/06 , G06F12/14 , G06F21/00
摘要： A flash memory controller is operative to receive serial commands and command arguments. A flash permissions table identifies each segment of flash memory as READ_ONLY, PRIVATE_R/W or OPEN_R/W. A memory interface is coupled to a flash memory and also the flash permissions table. When a flash memory write operation is received with an associated command argument corresponding to an address indicated as READ_ONLY in the flash permissions table and a DISABLE_WR_REG is true, the write operation is ignored or converted into a non-write command and issued to the flash memory.

9. 发明申请

WO2019040382A1 QUICK DECISION PREAMBLE DETECTOR WITH HIERARCHICAL PROCESSING 审中-公开
公开(公告)号：WO2019040382A1
公开(公告)日：2019-02-28
申请号：PCT/US2018/047124
申请日：2018-08-20
申请人： REDPINE SIGNALS, INC
发明人： MURALI, Partha
IPC分类号： H04B1/00 , H04L1/00
CPC分类号： H04W52/0229 , H04L1/0039 , H04W52/0216
摘要： A wireless receiver has a preamble detection apparatus and method which waits until the expected arrival of a beacon frame, after which power is cyclically applied during a preamble detection interval and a sleep interval until a preamble is detected. The preamble detector has a first mode with a longer preamble detection interval and a second mode with a shorter preamble detection interval. During the preamble detection interval, power is applied to receiver components, and during the sleep interval, power is not applied. The duration of the preamble detection interval is equal to a preamble sensing interval, and if a preamble is detected, power remains applied to a preamble processor for a preamble processing interval. The duration of the sleep interval is the duration of a long preamble less the sum of two times the preamble detection interval plus the preamble processing interval.

10. 发明申请

WO2018106990A1 INCIDENT BROADCAST RETRANSMISSION IN A VEHICULAR NETWORK 审中-公开
公开(公告)号：WO2018106990A1
公开(公告)日：2018-06-14
申请号：PCT/US2017/065244
申请日：2017-12-08
申请人： REDPINE SIGNALS, INC
发明人： MATTELA, Govardhan
IPC分类号： H04W40/12 , H04W88/04 , G08G1/123 , H04H20/71
摘要： A system for transmission of incident information includes maintaining a table of RSSI values for a plurality of stations. When an incident is detected, the system first sends a broadcast packet with incident information, and next sends a unicast packet to any station below a particular RSSI threshold until the unicast packet is acknowledged or a retransmission interval passes.

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