US Patent Application 18322437. RANGING DEVICE simplified abstract

RANGING DEVICE

Organization Name

CANON KABUSHIKI KAISHA==Inventor(s)==

[[Category:SHOGO Yamasaki of Kanagawa (JP)]]

RANGING DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18322437 titled 'RANGING DEVICE

Simplified Explanation

The patent application describes a ranging device that uses light pulses to measure distances. Here are the key points:

• The device includes a time counting circuit, a pulse generation circuit, holding circuits, and a comparison circuit.
• The pulse generation circuit generates a pulse signal using light.
• The first holding circuit keeps track of the number of pulses in a specific time period.
• The second holding circuit stores identification information and corresponding pulse count values for multiple time periods.
• The comparison circuit compares the pulse count value from the first holding circuit with the stored pulse count values in the second holding circuit.
• The comparison circuit updates the second holding circuit with identification information and pulse count values for the time periods with the highest pulse count values.
• This allows for accurate distance measurement based on the pulse count values and their corresponding time periods.

Original Abstract Submitted

A ranging device includes a time counting circuit, a pulse generation circuit, first and second holding circuits, and a comparison circuit. The pulse generation circuit generates a signal including a pulse based on light. The first holding circuit sequentially performs an operation of holding a pulse count value based on the number of pulses in a count period. The second holding circuit holds N sets of identification information indicating one of count periods and a pulse count value corresponding to the identification information. The comparison circuit compares the pulse count value held in the first holding circuit with the N pulse count values held in the second holding circuit and performs an update process of holding, in the second holding circuit, identification information that specifies each of count periods whose rank of pulse count value is up to the N-th, and a pulse count value corresponding to the identification information.