Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Signal propagation time measuring means

A technology of time measurement and signal propagation, applied in telemetry/remote control selection devices, selection devices, transmission systems, etc., can solve the problems of increased component cost and complicated receiving circuit components, and achieve the effect of simplifying the structure

Active Publication Date: 2014-01-22
KK TOKAI RIKA DENKI SEISAKUSHO
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this leads to a complication of the receiving circuit components, which increases the cost of the components

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Signal propagation time measuring means
  • Signal propagation time measuring means
  • Signal propagation time measuring means

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below, according to Figure 1-Figure 8 The signal propagation time measurement device of the first embodiment will be described.

[0022] like figure 1 As shown, in the electronic system 3 , the vehicle 1 performs ID verification of the electronic key 2 through wireless communication with the electronic key 2 . When the ID verification of the electronic key 2 is established, for example, locking / unlocking of the vehicle doors and starting of the engine are permitted. The electronic key system 3 includes, for example, a keyless operation system that performs ID verification based on communication from the vehicle 1 , and a wireless key system that performs ID verification based on communication from the electronic key 2 .

[0023] The electronic key system 3 includes a signal propagation time measuring device 4 that measures the propagation time of a signal sent from the vehicle 1 and returned to the vehicle 1 via the electronic key 2 . For example, the vehicle 1 tra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a simple configuration of the signal propagation time measurement of the propagation time measuring means. A signal transfer time measurement apparatus (4) measures a transfer time (TX) of a signal transmitted from a base station (1) and returned via a terminal (2) to the base station (1). The signal transfer time measurement apparatus includes a signal processor (21) that divides the signal (Str) into a plurality of frequency bands (22) and transmits the signal in the plurality of frequency bands.

Description

technical field [0001] The present invention relates to a signal propagation time measuring device for measuring the propagation time of a signal communicating between a base station and a terminal. Background technique [0002] The signal propagation time measuring device measures the time from when a base station transmits a signal (radio wave) to a terminal until when the base station receives the signal (radio wave) transmitted from the terminal. Japanese Patent Publication No. 9-170364, Japanese Patent Application Publication No. 2003-13644, Japanese Special Publication No. 2006-512515, and Japanese Special Publication No. 2008-515315 describe an electronic key system equipped with such a signal propagation time measuring device. . The signal propagation time measuring device measures the signal propagation time between the vehicle and the electronic key when ID verification is performed by wireless communication between the vehicle and the electronic key. Thus, even ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04B17/00H03J9/02H04Q9/00
CPCB60R25/24H04B17/104H04W24/00
Inventor 古贺健一河村大辅
Owner KK TOKAI RIKA DENKI SEISAKUSHO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com