diff --git a/hgdriver/hgdev/hg_scanner_306.cpp b/hgdriver/hgdev/hg_scanner_306.cpp
index 99b9968..f9f6972 100644
--- a/hgdriver/hgdev/hg_scanner_306.cpp
+++ b/hgdriver/hgdev/hg_scanner_306.cpp
@@ -477,7 +477,7 @@ int hg_scanner_306::get_img_data_7010()
 			std::lock_guard<std::mutex>      lock(io_lock_);
 			ret = writeusb(usb);
 
-			io_->set_timeout(800);
+			io_->set_timeout(1000);
 			sw.reset();
 			int len = sizeof(info);
 			ret = io_->read_bulk(&info, &len);
@@ -513,10 +513,12 @@ int hg_scanner_306::get_img_data_7010()
 				std::vector<unsigned char>().swap(jpgdata_); //回收空间 clear只能清空元素
 				return 0;
 			}
-			//return 0;
-			
 
 			int frame_ind = first_frame_total_ - last_frame_total_;
+			if (frame_ind < 0)
+			{
+				frame_ind = 0;
+			}
 
 			mat_width = frame_width_;
 			mat_height = (frame_hegiht_ * first_frame_total_) - (frame_hegiht_ * frame_ind);