Pipe Latch Circuit for High-Speed Consecutive Data Output

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Solution Overview

Problem

Semiconductor devices with pipe latch circuits face challenges in efficiently managing and outputting consecutive data due to varying numbers of data latches and complex latch connections, which affect data latency and output speed.

Innovation Solution

The semiconductor device incorporates a data latch circuit, sense amplification circuit, and data driving circuit configured to latch and amplify input data based on control signals, enabling efficient output of data through a sum output control signal, even with increased numbers of data latches.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the number of data latches is increased to handle more data, then the data storage capacity is improved, but the data output speed and latency performance deteriorate

Engineering Contradiction:
Improvedata storage capacityVSAvoiddata output speed
Core Design Contradiction:
Quantity of substanceVSSpeed

Solution Approach 1:

The patent divides the data output operation into multiple phases using phase signals (first phase and second phase). The pipe latch circuit is segmented into multiple latch units (first latch unit, second latch unit, etc.), each handling specific data bits. This segmentation allows parallel processing of different data portions, maintaining high output speed while increasing storage capacity through multiple latches.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements preliminary latching of data in multiple latch units before the actual output operation. The input data is latched in different phases across multiple latch units in advance, so that when the output operation begins, the data is already prepared and can be output immediately without waiting for sequential latching, thus maintaining speed while increasing capacity.

Inventive Principle:
Principle #10Preliminary action

2Quantity of substance

If the number of data latches is increased to handle more data, then the data storage capacity is improved, but the data latency increases

Engineering Contradiction:
Improvedata storage capacityVSAvoiddata latency
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The patent segments the data output into multiple phases and uses multiple latch units that can operate in parallel. Each latch unit handles specific data bits independently, allowing simultaneous latching and output operations. This segmentation eliminates the sequential dependency that would cause latency, enabling low latency even with increased storage capacity through multiple latches.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent maintains continuous operation through overlapping latching and output phases. The first latch unit latches data in a first phase while the second latch unit latches data in a second phase, and the output operation continues without interruption. This continuous action eliminates idle time and waiting periods, preventing latency increase despite having more latches for higher capacity.

Inventive Principle:
Principle #20Continuity of useful action

3Quantity of substance

If data latches are connected in series to increase storage capacity, then the data storage capacity is improved, but the circuit complexity increases

Engineering Contradiction:
Improvedata storage capacityVSAvoidcircuit complexity
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent segments the pipe latch circuit into multiple independent latch units (first latch unit, second latch unit, etc.), each with its own control signals and output paths. This modular segmentation reduces the complexity of individual latch units while achieving high storage capacity through parallel arrangement, avoiding the complex interconnections that would result from series connections.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from series connection (one-dimensional sequence) to parallel connection (multi-dimensional simultaneous operation) of latch units. Multiple latch units operate simultaneously in different phases, utilizing temporal and spatial dimensions to increase capacity without increasing the complexity of individual unit connections. This dimensional change allows high capacity with simplified circuit architecture.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11694729B2Pipe latch circuit for executing consecutive data output operation
Publication Date: 2023.07.04 SK HYNIX INC
  • US11694729B2 patent drawing
  • US11694729B2 patent drawing
  • US11694729B2 patent drawing

AI summary

A pipe latch circuit includes a data latch circuit configured to latch an input data based on an input control signal and output the latched input data as a latch data based on an output control signal, a sense amplification circuit configured to sense and amplify the latch data based on a sum output control signal, and a data driving circuit configured to drive an output data from the latch data based on the sum output control signal.