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US5055842A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-stage serial-to-parallel/parallel-to-serial converter processing data words by segments

Assignee: Siemens AG
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Filing: 1990-10-22
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Granted: 1991-10-08
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Expires: 2010-10-22
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Abstract

Abstract A circuit for parallel-to-serial or serial-to-parallel conversion uses a multi-stage structure for conversion of long data words section-by-section. Each section of the data word corresponds to length/width of the respective registers or latches of the circuit which are successively controlled by an executive sequencer to process the data word in these smaller sections. The section-by-section conversion provides, for a high data rate, a reduction in clock loading and power dissipation.

Inventors

  • 👤 Rudi Mueller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 07:45
CPC Classifications
H; H03; H03M; H03M9/00

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 150 words
Circuit arrangement for at least one of converting data words having a parallel structure into data words having a serial structure or converting data words having a serial structure into data words having a parallel structure, comprising: a shift register converter having at least serial terminals and having a length less than a length of a data word to be converted, a data bus that connects parallel terminals via a plurality of registers to the serial terminals via the shift register converter, a plurality of control lines connecting an executive sequencer to the shift register converter and to the plurality of registers, the data word to be converted being divided into sections by the executive sequencer, these sections being, first, smaller than the data word length, and, second, corresponding to the length of the shift register converter, whereby these data word sections are successively converted in the shift register converter.
Claim 2
Dependent Claim 150 words
Circuit arrangement for at least one of converting data words having a parallel structure into data words having a serial structure or converting data words having a serial structure into data words having a parallel structure, comprising: a shift register converter having at least serial terminals and having a length less than a length of a data word to be converted, a data bus that connects parallel terminals via a plurality of registers to the serial terminals via the shift register converter, a plurality of control lines connecting an executive sequencer to the shift register converter and to the plurality of registers, the data word to be converted being divided into sections by the executive sequencer, these sections being, first, smaller than the data word length, and, second, corresponding to the length of the shift register converter, whereby these data word sections are successively converted in the shift register converter.
Claim 3
Dependent Claim 35 words
Circuit arrangement according to claim 1, wherein the plurality of registers are successively driven in that a register enable signal is shifted through register-associated control shift register stages that control the respective plurality of registers.
Claim 4
Dependent Claim 28 words
Circuit arrangement according to claim 2, wherein a first control shift register stage is supplied with the register enable signal at the beginning of a data word conversion.
Claim 5
Dependent Claim 20 words
Circuit arrangement according to claim 3, wherein the control shift register stages form a shift register closed in a ring.
Claim 6
Dependent Claim 63 words
Circuit arrangement according to claim 3, wherein the control shift register stages are each respectively formed by at least a series circuit of a first transmission gate, a first inverter, a second transmission gate, and a second inverter, whereby the second transmission gate is controlled with control signals that are complementary with respect to the control signal supplied to the first transmission gate.
Claim 7
Dependent Claim 163 words
A circuit arrangement for at least one of converting data words having a parallel structure into data words having a serial structure or converting data words having a serial structure into data words having a parallel structure, comprising: a shift register converter having at least serial terminals, a data bus that connects parallel terminals via a plurality of registers to the serial terminals via the shift register converter, a plurality of control lines connecting an executive sequencer to the shift register converter and to the plurality of registers, the data word to be converted being divided into sections by the executive sequencer, these sections being, first, smaller than the data word length, and, second, corresponding to the length of the shift register converter, whereby these data word sections are successively converted in the shift register converter, signals for controlling the plurality of registers being transmitted in a binary code from the executive sequence to the plurality of registers wherein the signals are decoded.
Claim 8
Dependent Claim 163 words
A circuit arrangement for at least one of converting data words having a parallel structure into data words having a serial structure or converting data words having a serial structure into data words having a parallel structure, comprising: a shift register converter having at least serial terminals, a data bus that connects parallel terminals via a plurality of registers to the serial terminals via the shift register converter, a plurality of control lines connecting an executive sequencer to the shift register converter and to the plurality of registers, the data word to be converted being divided into sections by the executive sequencer, these sections being, first, smaller than the data word length, and, second, corresponding to the length of the shift register converter, whereby these data word sections are successively converted in the shift register converter, signals for controlling the plurality of registers being transmitted in a binary code from the executive sequence to the plurality of registers wherein the signals are decoded.
Claim 9
Dependent Claim 35 words
Circuit arrangement according to claim 6, wherein the plurality of registers are successively driven in that a register enable signal is shifted through register-associated control shift register stages that control the respective plurality of registers.
Claim 10
Dependent Claim 28 words
Circuit arrangement according to claim 7, wherein a first control shift register stage is supplied with the register enable signal at the beginning of a data word conversion.
Claim 11
Dependent Claim 20 words
Circuit arrangement according to claim 8, wherein the control shift register stages form a shift register closed in a ring.
Claim 12
Dependent Claim 63 words
Circuit arrangement according to claim 8, wherein the control shift register stages are each respectively formed by at least a series circuit of a first transmission gate, a first inverter, a second transmission gate, and a second inverter, whereby the second transmission gate is controlled with control signals that are complementary with respect to the control signal supplied to the first transmission gate.

References Cited (Backward Citations)

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JPS6257322A Cited
US4620180A Cited
EP0251151A2 Cited
US4901076A Cited
JPH01177221A Cited
JPH02109425A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-10-07 1995-04-08 1995-10-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-10-07 1999-04-08 1999-10-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-10-07 2003-04-08 2003-10-08 $7700.00 Window Closed / Lapsed

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