DE102017200687A1 - Transmitter and receiver for a differential low voltage signal - Google Patents
Transmitter and receiver for a differential low voltage signal Download PDFInfo
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- DE102017200687A1 DE102017200687A1 DE102017200687.0A DE102017200687A DE102017200687A1 DE 102017200687 A1 DE102017200687 A1 DE 102017200687A1 DE 102017200687 A DE102017200687 A DE 102017200687A DE 102017200687 A1 DE102017200687 A1 DE 102017200687A1
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- binary signal
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- 239000004020 conductor Substances 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000011664 signaling Effects 0.000 claims 1
- 230000009467 reduction Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
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- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4072—Drivers or receivers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
- G06F13/4234—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being a memory bus
- G06F13/4243—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being a memory bus with synchronous protocol
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Dc Digital Transmission (AREA)
- Selective Calling Equipment (AREA)
Abstract
Sender (10) für ein differenzielles Niederspannungssignal, gekennzeichnet durch folgende Merkmale:- der Sender (10) weist eine Stromquelle (11) zum Erzeugen eines elektrischen Stromes durch ein mit dem Sender (10) verbundenes symmetrisches Leiterpaar (30, 31) sowie einen mit der Stromquelle (11) verbundenen Wechselrichter (12) zum Umrichten des Stromes auf,- die Stromquelle (11) ist derart konfiguriert, dass der Strom abhängig von einem ersten Binärsignal (42) zwischen einer ersten Stromstärke und einer zweiten Stromstärke wechselt und- der Wechselrichter (12) ist derart konfiguriert, dass der Strom abhängig von einem zweiten Binärsignal (41) zwischen einer ersten Stromrichtung und einer zweiten Stromrichtung wechselt.Transmitter (10) for a differential low-voltage signal, characterized by the following features: - the transmitter (10) has a current source (11) for generating an electric current through a with the transmitter (10) connected symmetrical pair of conductors (30, 31) and one with the current source (11) is configured such that the current changes between a first current intensity and a second current intensity and the inverter depending on a first binary signal (42) (12) is configured such that the current alternates between a first current direction and a second current direction depending on a second binary signal (41).
Description
Die vorliegende Erfindung betrifft einen Sender für ein differenzielles Niederspannungssignal. Die vorliegende Erfindung betrifft darüber hinaus einen entsprechenden Empfänger, ein entsprechendes Steuergerät sowie ein Kraftfahrzeug.The present invention relates to a transmitter for a differential low-voltage signal. The present invention also relates to a corresponding receiver, a corresponding control device and a motor vehicle.
Stand der TechnikState of the art
Ein differenzielles Niederspannungssignal (low voltage differential signal, LVDS) im Sinne des Standards ANSI/TIA/EIA-644-1995 / IEEE Std 1596.3-1996 wird nach dem Stand der Technik in verschiedensten Schnittstellen zur Hochgeschwindigkeits-Datenübertragung eingesetzt. Standardgemäße Schnittstellen zeichnen sich aufgrund geringer Spannungsänderungen, Lade- und Entladeströme in den Leitungen durch eine verminderte Störaussendung in Form kapazitiver und induktiver Kopplung und somit durch ihre elektromagnetische Verträglichkeit (EMV) selbst bei hohen Taktfrequenzen aus. Die Herabsetzung der Versorgungsspannung begünstigt zudem eine Strukturverkleinerung der beteiligten Halbleiterschaltungen und verringert so den Raumbedarf der über die Schnittstelle verbundenen Geräte.A differential low voltage signal (LVDS) within the meaning of the standard ANSI / TIA / EIA-644-1995 / IEEE Std 1596.3-1996 is used in the prior art in various interfaces for high-speed data transmission. Standard interfaces are characterized by low voltage changes, charging and discharging currents in the lines by a reduced interference emission in the form of capacitive and inductive coupling and thus by their electromagnetic compatibility (EMC) even at high clock frequencies. The reduction of the supply voltage also favors a reduction in structure of the semiconductor circuits involved and thus reduces the space requirement of the devices connected via the interface.
Offenbarung der ErfindungDisclosure of the invention
Die Erfindung stellt einen Sender, einen entsprechenden Empfänger, ein Steuergerät sowie ein Kraftfahrzeug gemäß den unabhängigen Ansprüchen bereit.The invention provides a transmitter, a corresponding receiver, a control device and a motor vehicle according to the independent claims.
Ein Vorzug dieser Lösung liegt in der eröffneten Möglichkeit, neben der Stromrichtung auch die Stromstärke und damit den Betrag der Wechselspannung am Empfänger zu modulieren, um so ein zweites Signal übertragen zu können. Vorteilhaft ist dabei, dass sich Leitungen einsparen lassen und dass beide Signale gleiche Laufzeiten haben.An advantage of this solution lies in the opened possibility, in addition to the current direction, of modulating the current intensity and thus the amount of the alternating voltage at the receiver so as to be able to transmit a second signal. It is advantageous that lines can be saved and that both signals have the same terms.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im unabhängigen Anspruch angegebenen Grundgedankens möglich. So kann vorgesehen sein, den Sender und Empfänger in ein Kraftfahrzeug-Steuergerät zu integrieren, wo sie beispielsweise zur Übertragung des Takt- und Datensignales über einen Mikrosekundenbus oder -kanal (microsecond bus, µSB oder MSB) zum Einsatz kommen. Hierbei handelt es sich um eine asymmetrische serielle Schnittstelle für die Kurzstreckenkommunikation zwischen einem Hauptrechner (master) und mindestens einem Satelliten- oder Nebenrechner (slave), die etwa im Rahmen des Motormanagements zur digitalen Datenübertragung innerhalb des Steuergerätes dienen kann, um die klassische Pulsbreitenmodulation (pulse width modulation, PWM) magnetischer Einspritzventile oder anderer Leistungsglieder durch eine schnelle serielle Schnittstelle mit wenigen Anschlüssen (pins) und geringer Latenz zu ersetzen. Die Datenübertragung von Haupt- zu nachgelagertem Nebenrechner (downstream) erfolgt hierbei in der Regel synchron, während die Datenübertragung in der Gegenrichtung (upstream), die hauptsächlich dazu dient, Diagnoseinformationen von Neben- zu vorgelagertem Hauptrechner zu senden, in der Regel asynchron erfolgt. Im Vergleich zu einer separaten LVDS-Übertragung des Takt- und Datensignales ermöglicht der vorgeschlagene Ansatz hier bei oberflächenmontierten Bauelementen (surface-mounted devices, SMD) die Einsparung jeweils einer Lötfläche (pad) und somit eine weitere Verkleinerung des sogenannten Fußabdruckes (footprint) von Haupt- und Nebenrechner auf einer gemeinsamen Leiterplatte.The measures listed in the dependent claims advantageous refinements and improvements of the independent claim basic idea are possible. Thus, it can be provided to integrate the transmitter and receiver in a motor vehicle control unit, where they are used for example for transmitting the clock and data signal over a microsecond bus or channel (microsecond bus, μSB or MSB). This is an asymmetric serial interface for short-distance communication between a master (master) and at least one satellite or slave (slave), which may serve as part of the engine management for digital data transmission within the control unit to the classical pulse width modulation (pulse width modulation, PWM) magnetic injectors or other power links by a fast serial interface with few pins and low latency to replace. The data transmission from main to downstream ancillary computer (downstream) is usually synchronous, while the data transmission in the opposite direction (upstream), which mainly serves to send diagnostic information from ancillary to upstream host computer, asynchronously usually done. In comparison to a separate LVDS transmission of the clock and data signal, the proposed approach here with surface-mounted devices (surface-mounted devices, SMD) allows the saving of each pad (pad) and thus a further reduction of the so-called footprint of Haupt and slave computers on a common circuit board.
Eine Ausführungsform der Erfindung ermöglicht es in diesem Zusammenhang, ein zusätzliches Binärsignal zur Chipauswahl (chip select, CS, oder slave select, SS/SSY) bzw. Ausgangsfreigabe (output enable, OE) auf das Nutzdatensignal zu modulieren. Eine entsprechende Ausgestaltung gestattet es dem Hauptrechner, einzelne Nebenrechner auch ohne getrennte Steuerleitung gezielt zu aktivieren und deaktivieren.An embodiment of the invention in this context makes it possible to modulate an additional chip select signal (CS select or CS select, SS / SSY) or output enable (OE) onto the payload signal. A corresponding configuration allows the main computer to selectively activate and deactivate individual ancillary computers even without a separate control line.
Figurenlistelist of figures
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigt:
-
1 das schematische Schaltbild eines Senders und Empfängers. -
2 den Verlauf eines über eine Punkt-zu-Punkt-Verbindung übertragenen Binärsignales. -
3 eine alternative Nutzung des Binärsignales zur Chipauswahl.
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1 the schematic diagram of a transmitter and receiver. -
2 the course of a transmitted over a point-to-point connection binary signal. -
3 an alternative use of the binary signal for chip selection.
Ausführungsformen der ErfindungEmbodiments of the invention
Der zugehörige Empfänger (
Bei Mehrpunktverbindungen kann das Binärsignal (
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- US 6765829 B2 [0003]US 6765829 B2 [0003]
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE102017200687.0A DE102017200687A1 (en) | 2017-01-17 | 2017-01-17 | Transmitter and receiver for a differential low voltage signal |
CN201810039939.7A CN108334467B (en) | 2017-01-17 | 2018-01-16 | Transmitter and receiver for low voltage differential signals |
Applications Claiming Priority (1)
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DE102017200687.0A DE102017200687A1 (en) | 2017-01-17 | 2017-01-17 | Transmitter and receiver for a differential low voltage signal |
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DE102017200687A1 true DE102017200687A1 (en) | 2018-07-19 |
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DE102017200687.0A Pending DE102017200687A1 (en) | 2017-01-17 | 2017-01-17 | Transmitter and receiver for a differential low voltage signal |
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DE (1) | DE102017200687A1 (en) |
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CN111325964B (en) * | 2020-03-11 | 2021-08-13 | 江阴长仪集团有限公司 | Wireless module for intelligent electric energy meter and automatic code pairing method |
CN116800383A (en) * | 2023-08-21 | 2023-09-22 | 北京紫光芯能科技有限公司 | Multi-channel communication method, device, equipment and medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US6765829B2 (en) | 2001-02-16 | 2004-07-20 | Robert Bosch Gmbh | Device having a memory element, and a memory element |
Family Cites Families (9)
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JP2003316338A (en) * | 2002-02-21 | 2003-11-07 | Samsung Electronics Co Ltd | Flat panel display device having digital data transmitting and receiving circuit |
US7236018B1 (en) * | 2004-09-08 | 2007-06-26 | Altera Corporation | Programmable low-voltage differential signaling output driver |
KR100643606B1 (en) * | 2005-08-12 | 2006-11-10 | 삼성전자주식회사 | Apparatus and method for pre-emphasis of low voltage differential signaling transmitter |
DE102005042493A1 (en) * | 2005-09-07 | 2007-03-08 | Robert Bosch Gmbh | Control unit with computing device and I / O module that communicate with each other via a serial multi-wire bus |
CN101246670B (en) * | 2007-02-17 | 2010-06-16 | 联詠科技股份有限公司 | Serial data transmission method and correlated device used for display device |
KR20090056721A (en) * | 2007-11-30 | 2009-06-03 | 삼성전자주식회사 | Electronic device and control method thereof |
US8175172B2 (en) * | 2008-09-01 | 2012-05-08 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | High speed digital galvanic isolator with integrated low-voltage differential signal interface |
JP2010212752A (en) * | 2009-03-06 | 2010-09-24 | Nec Corp | Lvds driver, lvds circuit, and resistance value adjusting method and current value adjusting method for lvds circuit |
KR101341022B1 (en) * | 2009-12-30 | 2013-12-13 | 엘지디스플레이 주식회사 | Data transmitter and flat plate display device using the same |
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2017
- 2017-01-17 DE DE102017200687.0A patent/DE102017200687A1/en active Pending
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2018
- 2018-01-16 CN CN201810039939.7A patent/CN108334467B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6765829B2 (en) | 2001-02-16 | 2004-07-20 | Robert Bosch Gmbh | Device having a memory element, and a memory element |
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CN108334467A (en) | 2018-07-27 |
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