DIGITAL VIDEO CAMERA SYSTEM HAVING TWO MICROPHONES
A digital video camera system comprising image capture and an image recording units. The image capture unit includes an image sensor for capturing a digital video signal, an optical system for forming an image of a scene onto the image sensor, a first microphone, and a first wireless communication system. The image recording unit includes a second wireless communication system, a second microphone, an image display, a user interface including user controls, and a program memory storing instructions to implement a method for capturing a digital video sequence in response to user activation of a user control. The method includes wirelessly receiving a digital video signal from the image capture unit, displaying the received digital video signal on the image display, recording an audio signal from the microphones, and storing the received digital video signal and the recorded audio signal.
1 . A digital video camera system, comprising:
an image capture unit having:
an image sensor for capturing a digital video signal;
an optical system for forming an image of a scene onto the image sensor;
a first microphone for providing a first audio signal; and
a first wireless communication system; and
an image recording unit having:
a second wireless communication system for wirelessly communicating with the first wireless communication system;
a second microphone for capturing an audio signal;
an image display;
a user interface including one or more user controls;
a data processing system;
a storage memory for storing captured video images; and
a program memory communicatively connected to the data processing system and storing instructions configured to cause the data processing system to implement a method for capturing a digital video sequence, wherein the method includes:
detecting user activation of a user control to initiate the capture of the digital video sequence;
wirelessly receiving a digital video signal from the image capture unit;
displaying the received digital video signal on the image display;
recording at least one audio signal derived from the first audio signal from the first microphone and the second audio signal from the second microphone, wherein the at least one audio signal is temporally synchronized with the received digital video signal;
storing the received digital video signal and the recorded audio signal in at least one digital media file; and
detecting user activation of a user control to terminate the capture of the digital video sequence.
2 . The digital video camera system of claim 1 , wherein the image capture unit and the image recording unit include interface connectors to enable the image recording unit to be the physically connected to the image capture unit.
3 . The digital video camera system of claim 2 , wherein when the image capture unit is connected to the image recording unit they can be operated as a one-piece connected digital video camera unit.
4 . The digital video camera system of claim 2 , wherein the image capture unit further includes a rechargeable battery for powering the image capture unit, and wherein the rechargeable battery is recharged through the interface connector when the image capture unit is connected to the image recording unit.
5 . The digital video camera system of claim 4 , wherein the rechargeable battery in the image capture unit is recharged when the image recording unit is connected to an external recharger.
6 . The digital video camera system of claim 1 , wherein a pointing direction of the optical system in the image capture unit can be controlled responsive to user activation of one or more user controls in the image recording unit.
7 . The digital video camera system of claim 6 , wherein a pointing direction of the first microphone in the image capture unit is controlled together with the pointing direction of the optical system in the image capture unit.
8 . The digital video camera system of claim 6 , wherein the one or more user controls include an orientation sensor that determines an orientation of the image recording unit.
9 . The digital video camera system of claim 1 , wherein a user control is provided to enable a user to select one or both of the first and second audio signals to be recorded in the at least one digital media file.
10 . The digital video camera system of claim 1 , wherein the first and second audio signals are combined to form a combined audio signal which is recorded in the at least one digital media file.
11 . The digital video camera system of claim 10 , wherein a user control is provided to enable a user to control relative sound recording levels for the first and second audio signals in the combined audio signal.
12 . The digital video camera system of claim 1 , wherein the at least one digital media file is a single digital media file.
13 . The digital video camera system of claim 1 , wherein the image recording unit further includes:
a second image sensor for capturing a second digital video signal; and
a second optical system for forming an image of a second scene onto the second image sensor.
14 . The digital video camera system of claim 13 , wherein the second digital video signal is recorded in the at least one digital media file.